A windproof and filament-breaking prevention quick fixing device for a hook head of a platform crane

Abstract

The utility model discloses a kind of offshore platform crane hook head windbreak broken silk quick fixing device, including big hook windbreak box body and small hook windbreak box body, windbreak box body includes two oppositely arranged guiding limiting anti-clamping plate and two oppositely arranged resistance baffle support plate, limiting plate and resistance baffle located above limiting plate are equipped on resistance baffle support plate;The end of resistance baffle on big hook windbreak box body is connected with spring tension bar with tension scale;The inner wall of guiding limiting anti-clamping plate forms the boss of the cross section of triangle inwardly.This utility model can efficiently complete the fixing work of big / small hook head, with low risk, high timeliness characteristics.

Description

Technical Field

[0001] This utility model relates to the field of offshore oil and gas extraction technology, and in particular to a windproof and wire-break-proof quick-fixing device for the hook of an offshore platform crane. Background Technology

[0002] Currently, the crane hook securing methods used to secure offshore oil and gas platforms before encountering extreme weather are unreliable, high-risk, and untimely. In the event of a super typhoon, not only will the hooks fail to secure the platform, but it will also cause serious secondary damage, mainly in the following aspects:

[0003] 1) High level of personnel involvement and high operational risk.

[0004] The current method of securing the crane hook requires manual contact with the large / small hooks and aligning them to the limit position on the side of the ship. The slings must then be manually tightened to ensure the hook is taut against the side railing after lifting. This process involves significant human involvement, greatly increasing the risk of mechanical injury and posing a high operational hazard.

[0005] 2) Inclined pulling and hanging increases the risk of wire rope breakage.

[0006] When the crane boom is positioned at rest, the horizontal distance between the vertical projection point of the large / small hook and the nearest point of the side railing is: 6 meters eastward and 1.5 meters northward (the two-dimensional projection plane of a local area on the Earth's surface is a horizontal plane). Under these conditions, the tension on the hooks will inevitably cause cutting-like hard friction between the large / small hook wire ropes and the edge of the boom's fixed pulley groove, thus increasing the risk of damage and wire breakage to the large / small hook wire ropes.

[0007] 3) The design flaw lacks tensile strength, which can easily lead to secondary injuries.

[0008] The offshore platform crane operation and maintenance manual does not specify concrete measures or plans for securing the hook in its descriptions of wind protection. Currently, there is no reference data or technical specifications supporting the method of securing the crane hook to the side railing using slings, nor any corresponding tensile force limits. The currently used empirical values, if used in typhoons where wind force exceeds the sling's withstand threshold, are highly susceptible to sling breakage, potentially causing incalculable damage to the crane itself and other structural equipment on the platform. Utility Model Content

[0009] To address the aforementioned technical problems, this invention provides a rapid, windproof, and wire-break-proof securing device for the hook of an offshore platform crane. This device can safely and efficiently secure the large and small hooks of the platform crane against wind, effectively preventing injury to equipment and personnel. Even when the outer diameter of a typhoon's 7th-level gale reaches 500 kilometers from the operational sea area, it can safely and reliably secure the crane hook in a short time, thereby improving the overall efficiency of personnel evacuation from offshore platforms during typhoons.

[0010] This utility model is achieved by adopting the following technical solution.

[0011] A quick-fixing device for windproofing and wire breakage prevention of a crane hook on an offshore platform includes a large hook windproof box body and a small hook windproof box body. The windproof box body includes two opposing guide limiting anti-jamming plates and two opposing resistance baffle support plates. A limiting plate and a resistance baffle located above the limiting plate are provided on the resistance baffle support plates. The end of the resistance baffle on the large hook windproof box body is connected to a spring tension rod with a tension scale. The inner wall of the guide limiting anti-jamming plate forms a protrusion with a triangular cross-section.

[0012] Furthermore, a T-shaped slot is formed on the upper part of the hook resistance baffle support plate of the hook windproof box body, and the hook resistance baffle is movably inserted into the slot.

[0013] Furthermore, the small hook resistance baffle includes a plate body with a semi-circular notch at the front end; a U-shaped bracket is connected to the bottom of the plate body, and a limiting pin is provided in the middle of the two sides of the bracket, the limiting pin passing through the bottom edge of the bracket and connecting to the handle.

[0014] Furthermore, a hook limiting plate is connected to the middle of the inner wall of the hook resistance baffle support plate of the hook windproof box body, and an arc-shaped plate is provided on the side of the hook limiting plate away from the hook resistance baffle support plate.

[0015] Furthermore, the upper end of the hook resistance baffle support plate of the hook windproof box body is provided with connecting ears, and the hook resistance baffle is connected between the two connecting ears by locking pins.

[0016] Furthermore, a hook limiting plate is connected to the middle of the inner wall of the hook resistance baffle support plate of the hook windproof box body.

[0017] Furthermore, a groove is formed on the upper part of the protrusion of the guide limiting anti-jamming plate, and the end of the limiting plate is located in the groove.

[0018] Furthermore, a connecting plate is provided at the lower part of the windproof box body, and expansion anchor bolts are installed on the connecting plate.

[0019] Furthermore, the spring tension rod is equipped with a slip-type tension release device.

[0020] Furthermore, the slip-type tension release device includes a cover and a box body that are slidably connected, with an upper hook and a lower hook connected to different sides of the cover and the box body respectively; several upper brake pads and lower brake pads are provided inside the box body, and sliding teeth and sliding grooves are formed between the upper brake pads and the bottom surface of the cover body and between the lower brake pads and the bottom surface of the box body; an adjusting bolt is threadedly connected to the side of the box body parallel to the brake pads, and the adjusting bolt passes through the side wall of the box body and enters the box body to abut against the brake pads.

[0021] This application has the following beneficial effects.

[0022] The application of this invention on offshore oil and gas exploration platforms can greatly improve the timeliness of crane hook fixing, reduce personnel operational risks, and efficiently advance typhoon emergency evacuation operations in oil and gas fields. Existing methods of fixing crane hooks to platform side railings via flexible slings not only pose a risk of personnel injury during operation but are also time-consuming, and the reliability is poor once the hooks are under tension. If the railing welds crack, it can easily cause secondary damage to the equipment, such as the hook falling into the sea. Furthermore, the oblique lifting and pulling causes severe friction between the wire rope and the edge of the boom pulley, leading to wire rope breakage and other wire rope damage. This invention not only quickly and efficiently fixes the crane hooks but also quantifies the force on the hooks. The mechanical direct-reading tension gauge has no electrical equipment, ensuring high reliability and reducing personnel involvement, thus lowering the risk of injury. While ensuring the stability of the hooks, it also indirectly helps to fix the boom, ultimately achieving the goal of efficient typhoon emergency evacuation procedures for offshore equipment. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the small hook fixing device of this utility model;

[0024] Figure 2 This is an exploded view of the small hook fixing device of this utility model;

[0025] Figure 3 This is a structural schematic diagram of the large hook fixing device of this utility model;

[0026] Figure 4 This is an exploded view of the large hook fixing device of this utility model;

[0027] Figure 5 This is the front view of the small hook guide limit anti-jamming plate of this utility model;

[0028] Figure 6 This is a schematic diagram of the structure of the slip-type tension release device of this utility model;

[0029] Figure 7 This is an exploded view of the slip-type tension release device of this utility model.

[0030] The components include: 1. Small hook resistance baffle; 101. Bracket; 102. Handle; 13. Limiting pin; 2. Small hook windproof box body; 21. Small hook guide limit anti-jamming plate; 22. Small hook resistance baffle support plate; 3. Small hook limiting plate; 4. Slot 1; 5. Expansion anchor bolt; 6. Large hook windproof box body; 61. Large hook guide limit anti-jamming plate; 62. Large hook resistance baffle support plate; 7. Large hook resistance baffle; 8. Spring tension rod; 9. Slot. 2; 10. Large hook limit plate; 11. Slippage type tension release device; 111. Upper brake pad cover plate; 112. Observation side plate; 113. Upper hook head; 114. Upper limit track pin hole; 115. Lower brake pad support plate; 116. Side plate; 117. Upper brake pad; 118. Lower brake pad; 119. Lower hook head; 1110. Upper limit track pin; 1111. Lower limit track pin; 1112. Adjusting bolt; 12. Locking pin. Detailed Implementation

[0031] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0032] like Figure 1-7 As shown, a quick-fixing device for windproof and anti-broken wire of a crane hook on an offshore platform includes a windproof box body for large / small hooks, a limiting plate for large / small hooks, a resistance baffle for large / small hooks, a spring tension rod 8 with a tension scale, a slip-type tension release device 11, and a high-strength recyclable expansion anchor bolt 5.

[0033] Specifically, the small hook windproof box body 2 includes two oppositely arranged small hook guide limiting anti-jamming plates 21 and two oppositely arranged small hook resistance baffle support plates 22. The sides of the four plates are connected in sequence to form the small hook windproof box body 2.

[0034] T-shaped slots are formed on the upper part of the two small hook resistance baffle support plates 22, and the two small hook resistance baffles 1 are slidably inserted into the slots of the two small hook resistance baffle support plates 22 respectively. The small hook resistance baffle 1 includes a plate body, and a U-shaped bracket 101 is connected to the lower part of the plate body. A limiting pin 13 is provided in the middle of the two sides of the bracket 101. The limiting pin 13 passes through the bottom edge of the bracket 101 and is connected to the handle 102. A semi-circular notch is formed at the front end of the plate body of the small hook resistance baffle 1. After the two small hook resistance baffles 1 are spliced ​​together, a circular through hole is formed. By pushing the handle 102, the two small hook resistance baffles 1 can be simultaneously "closed" and "separated" to achieve quick fixation of the small hook. A limiting pin 13 is also provided at the handle 102. When the small hook resistance baffle 1 is pushed to the target position, the limiting pin 13 is rotated to make the limiting pin 13 lock in the T-shaped slot, thereby preventing the small hook resistance baffle 1 from accidentally loosening.

[0035] Small hook limiting plates 3 are connected to the inner walls of the middle part of the two small hook resistance baffle support plates 22. The side of the small hook limiting plate 3 away from the small hook resistance baffle support plate 22 is provided with an arc-shaped plate.

[0036] The inner wall of the small hook guide limiting anti-jamming plate 21 forms a protrusion with a triangular cross-section, which first reduces and then increases the distance between two opposing small hook guide limiting anti-jamming plates 21. A horizontally oriented groove 4 is also formed on the upper part of the protrusion, and the end of the small hook limiting plate 3 is located within the groove 4. The protrusion on the small hook guide limiting anti-jamming plate 21 allows the hook head to automatically slide into the windproof box and be limited, automatically returning to its position without manual intervention. Simultaneously, the lower part of the small hook guide limiting anti-jamming plate 21 adopts a "flared shoe" structure to prevent snagging and damage to the equipment when the hook head is lifted and displaced.

[0037] Several connecting plates are also provided on the lower outer wall of the small hook resistance baffle support plate 22, and expansion anchor bolts 5 are installed on the connecting plates. The windproof box body and the deck surface are fixed with high-strength recyclable expansion anchor bolts 5. The anchor points of the anchor bolts can be flexibly set according to the vertical projection range of the crane hook head, without being limited by the angle of the boom, and are highly operable.

[0038] The hook windproof box body 6 of this application includes two oppositely arranged hook guide limiting anti-jamming plates 61 and two oppositely arranged hook resistance baffle support plates 62. The sides of the four plates are connected in sequence to form the hook windproof box body 6.

[0039] Both of the two large hook resistance baffle support plates 62 have connecting ears at their upper ends, and a large hook resistance baffle 7 is located between the two connecting ears. The connecting ears and the large hook resistance baffle 7 are connected by locking pins 12. The end of the large hook resistance baffle 7 is located outside the large hook windproof box body 6, and a spring tension rod 8 with a tension scale is connected to the lower surface of the end of the large hook resistance baffle 7. The other end of the spring tension rod 8 is connected to a mounting plate set on the lower outer wall of the large hook resistance baffle support plate 62. When the large hook resistance baffle 7 is subjected to an upward force transmitted by the hook head, it will cause the high-strength spring tension rod 8 to deform, and the deformation and tension are directly displayed on the scale after physical conversion.

[0040] Preferably, this application further includes a slip-type tension release device 11 on the spring tension rod 8. The slip-type tension release device 11 includes a pressure plate box, which includes a cover composed of an upper brake pad cover plate 111 and an observation side plate 112 made of transparent material, and a box body composed of a lower brake pad support plate 115 and a side plate 116. The box body contains a plurality of upper brake pads 117 and lower brake pads 118. Specifically, a plurality of strip-shaped protrusions are formed on the bottom surface of the lower brake pad support plate 115, the cross-section of the protrusions being triangular, and correspondingly, a plurality of triangular grooves are formed upward on the bottom edge of the lower brake pad 118, the grooves matching the shape and position of the protrusions; similarly, a plurality of strip-shaped protrusions are formed on the bottom surface of the upper brake pad cover plate 111, the cross-section of the protrusions being triangular, and correspondingly, a plurality of triangular grooves are formed downward on the upper edge of the upper brake pad 117, the grooves matching the shape and position of the protrusions. Upper limit track pin 1110 and lower limit track pin 1111 are respectively provided on the two side walls of the lower brake pad support plate 115. A lower hook head 119 is also connected to the side wall of the lower brake pad support plate 115 on the side where the lower limit track pin 1111 is provided. A threaded hole is formed on the side plate 116, through which the adjusting bolt 1112 can pass into the housing. Upper limit track pin hole 114 and lower limit track pin hole are respectively formed on the two side walls of the upper brake pad cover plate 111. The upper limit track pin 1110 passes through the upper limit track pin hole 114, and the lower limit track pin 1111 passes through the lower limit track pin hole. An upper hook head 113 is also connected to the side wall of the upper brake pad cover plate 111 on the side where the upper limit track pin hole 114 is provided.

[0041] This slip-type tension release device consists of several brake pads stacked inside a pressure plate box. Adjusting bolts horizontally press the brake pads together, creating friction. The pressure plate box is connected to the large hook resistance baffle 7 and the mounting plate via shackle hooks (upper and lower hooks). When the upward force on the large hook resistance baffle 7 exceeds the friction force, the brake pads inside the pressure plate box will move vertically, causing a "slippage" phenomenon and momentarily releasing the tension. Once the tension value drops slightly, the brake pads immediately lock back to a standstill, providing instantaneous tension release without violently ejecting and causing injury. The setting value of this slip-type tension release device 11 must be set within the deformation threshold range of the large hook resistance baffle 7, and it must be locked with pins before personnel evacuate to prevent accidental movement that could loosen the device and cause the protective function to fail.

[0042] This application features hook limiting plates 10 connected to the inner walls of the two large hook resistance baffle support plates 62. Several connecting plates are also provided on the lower outer wall of the large hook resistance baffle support plates 62, with expansion bolts 5 threaded through them. The windproof box body is fixed to the deck surface using high-strength, recyclable expansion bolts 5. The anchor points of these bolts can be flexibly set according to the vertical projection range of the crane hook, without being limited by the boom angle, thus offering high operability.

[0043] The large hook guide limiting anti-jamming plate 61 has the same structure as the small hook guide limiting anti-jamming plate 21. Its inner sidewall forms a triangular protrusion, causing the distance between the two large hook guide limiting anti-jamming plates 61 to first decrease and then increase. A horizontally oriented locking groove 9 is formed above the protrusion, and the end of the large hook limiting plate 10 is located within the locking groove 9. The protrusion on the large hook guide limiting anti-jamming plate 61 allows the hook head to automatically slide into the windproof box and be limited, automatically returning to its position without manual intervention. Simultaneously, the lower part of the large hook guide limiting anti-jamming plate 61 adopts a "flared shoe" structure, which prevents damage to the equipment caused by the hook head hooking the guide groove when it is lifted and displaced.

[0044] The implementation process of this utility model device includes four steps: First, the boom is normally placed on the crane's rest arm, and the deck level and orientation of the utility model are determined by measuring the projected positions of the large and small hooks. Then, the high-strength anchor bolt holes around the windproof box body are pre-positioned on the main deck surface of the platform. After drilling the positioning holes on the main deck, the windproof box is connected and fixed to the main deck using high-strength recyclable expansion anchor bolts 5. Second, the large and small hooks are automatically slid into the windproof box body through the guide limit anti-jamming plate (no manual adjustment is required) until the crane's electronic weighing instrument displays "0". Third, the large and small hook resistance baffles are placed in place and connected to the high-strength spring tension rod 8. Fourth, after checking that all fixing bolts are tightened, the large and small hooks are slowly raised sequentially. The tension reading is taken by observing the position of the tension rod pointer on the tension scale, and this reading is compared with the crane's electronic weighing instrument. The hook tension can be quantitatively adjusted according to the typhoon wind force. Finally, the slippage-type tension release device 11 is locked, the crane stops operating, and this operation is completed.

[0045] During the operation of this utility model device, suitable anchoring points are selected below the vertical projection of the large / small hooks of the crane to ensure that the hooks can bear vertical force. The use of high-strength, recyclable expansion bolts ensures the flexibility of this utility model, allowing for easy installation and disassembly, reuse, low carbon emissions, and energy saving, without occupying the platform's fixed deck surface. The guide limit anti-jamming plate with a "flared shoe" structure allows the hooks to "automatically return to position and lift smoothly" without manual intervention. The tension scale can read the tension value in real time, ensuring that personnel work in a risk-controlled environment. During the lifting process of the large / small hooks, if the tension exceeds the equipment's upper limit due to accidental activation, the slippage-type tension release device can automatically release the force, preventing personnel from being injured by the machine, ultimately achieving the goal of shortening operation time and ensuring safety and reliability. Compared with traditional methods of fixing crane hooks during emergency evacuation during typhoons at sea, the application of this utility model on offshore platforms can significantly improve the overall timeliness of this work.

[0046] The embodiments described herein are preferred embodiments of this utility model and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made to the structure, shape, and principle of this utility model should be included within the scope of protection of this utility model.

Claims

1. A quick-fixing device for windproof and wire-breakage-proof hooks of offshore platform cranes, characterized in that: It includes a large hook windproof box body (6) and a small hook windproof box body (2). The windproof box body includes two oppositely arranged guide limiting anti-jamming plates and two oppositely arranged resistance baffle support plates. A limiting plate and a resistance baffle located above the limiting plate are provided on the resistance baffle support plate. The end of the resistance baffle on the large hook windproof box body (6) is connected to a spring tension rod (8) with a tension scale. The inner wall of the guide limiting anti-jamming plate forms a protrusion with a triangular cross section.

2. The windproof and wire-breakage-proof quick-fixing device for the hook of an offshore platform crane according to claim 1, characterized in that: The small hook resistance baffle support plate (22) of the small hook windproof box body (2) forms a T-shaped slot on the upper part, and the small hook resistance baffle (1) is movably inserted into the slot.

3. The windproof and wire-breakage-proof quick-fixing device for the hook of an offshore platform crane according to claim 2, characterized in that: The small hook resistance baffle (1) includes a plate body with a semi-circular notch at the front end of the plate body; a U-shaped bracket (101) is connected to the bottom of the plate body, and a limiting pin (13) is provided in the middle of the two sides of the bracket (101). The limiting pin (13) passes through the bottom edge of the bracket (101) and is connected to the handle (102).

4. The windproof and wire-breakage-proof quick-fixing device for the hook of an offshore platform crane according to claim 1, characterized in that: The small hook windproof box body (2) has a small hook limiting plate (3) connected to the middle of the inner wall of the small hook resistance baffle support plate (22). The small hook limiting plate (3) has an arc-shaped plate on the side away from the small hook resistance baffle support plate (22).

5. The windproof and wire-breakage-proof quick-fixing device for the hook of an offshore platform crane according to claim 1, characterized in that: The upper end of the hook resistance baffle support plate (62) of the hook windproof box body (6) is provided with a connecting ear, and the hook resistance baffle (7) is connected between the two connecting ears by a locking pin (12).

6. The windproof and wire-breakage-proof quick-fixing device for the hook of an offshore platform crane according to claim 1, characterized in that: The hook resistance baffle support plate (62) of the hook windproof box body (6) is connected to the hook limiting plate (10) in the middle of its inner wall.

7. The windproof and wire-breakage-proof quick-fixing device for the hook of an offshore platform crane according to claim 1, characterized in that: The upper part of the protrusion of the guide limiting anti-jamming plate forms a groove, and the end of the limiting plate is located in the groove.

8. The windproof and wire-breakage-proof quick-fixing device for the hook of an offshore platform crane according to claim 1, characterized in that: The lower part of the windproof box body is provided with a connecting plate, and expansion anchor bolts (5) are installed on the connecting plate.

9. A windproof and wire-break-proof quick-fixing device for the hook of an offshore platform crane according to claim 1, characterized in that: The spring tension rod (8) is equipped with a slip-type tension release device (11).

10. A windproof and wire-break-proof quick-fixing device for the hook of an offshore platform crane according to claim 9, characterized in that: The slip-type tension release device (11) includes a cover and a box body that are slidably connected. An upper hook (113) and a lower hook (119) are connected to different sides of the cover and the box body respectively. Several upper brake pads (117) and lower brake pads (118) are provided in the box body. Sliding teeth and sliding grooves are formed between the upper brake pad (117) and the bottom surface of the cover body and between the lower brake pad (118) and the bottom surface of the box body. An adjusting bolt (1112) is threadedly connected to the side of the box body parallel to the brake pads. The adjusting bolt (1112) passes through the side wall of the box body and enters the box body to abut against the brake pads.

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