Offshore platform high-altitude steel wire rope lubricating grease smearing and broken wire detecting device

Abstract

The utility model discloses an offshore platform high-altitude steel wire rope lubricating grease smearing and broken wire detecting device which comprises a pulley sleeve pipe, a plurality of lubricating grease injection mechanisms are connected to the outer wall of the pulley sleeve pipe, and each lubricating grease injection mechanism comprises a lubricating grease injection mechanism shell. A plurality of springs are arranged on the upper portion in the lubricating grease injection mechanism shell, pressing plates are arranged at the lower ends of the springs, a lubricating grease storage area is formed by the pressing plates and the lower portion of the lubricating grease injection mechanism shell, and a plurality of lubricating grease injection nozzles communicated with the pulley sleeve pipe are further arranged on the bottom face of the lubricating grease injection mechanism shell. The end face of the pulley sleeve pipe is connected with a broken wire detection ring. According to the utility model, lubricating grease coating and wire breakage detection of daily untouchable rope sections of hoisting equipment such as a crane wire rope can be realized, and the defects of the high-altitude untouchable rope sections of the wire rope during daily maintenance and the blank of a wire breakage detection technology are made up.

Description

Technical Field

[0001] This utility model relates to the field of high-altitude steel wire rope operations on offshore platforms, and in particular to a device for applying grease and detecting broken wires in high-altitude steel wire ropes on offshore platforms. Background Technology

[0002] As a lifting and load-bearing system, the reliability and integrity of steel wire ropes on offshore platforms are crucial indicators for evaluating maritime safety. However, due to technological and environmental limitations, the efficiency of maintaining inaccessible sections of steel wire ropes at high altitudes has not been substantially improved. The limitations of existing methods are mainly reflected in the following aspects:

[0003] 1) In traditional wire rope maintenance, grease is applied along the winch drum or the end of the tethered object. However, the wire rope at the fixed end of the winch or the suspended pulley block (such as a crane) is too far away for personnel to reach, so the maintenance of this section of wire rope is limited.

[0004] 2) Currently, there are only two methods for maintaining inaccessible sections of wire ropes: first, disassembling and maintaining the entire wire rope; second, erecting high-altitude scaffolding to maintain the inaccessible sections. However, both of these maintenance methods are extremely inefficient and carry high risks.

[0005] 3) Existing methods for detecting broken wires in steel wire ropes cannot effectively detect sections that are inaccessible at high altitudes, posing certain safety hazards. Utility Model Content

[0006] This invention addresses the technical problem of infrequent maintenance of inaccessible high-altitude wire rope sections in traditional construction operations, or neglect of maintenance due to cumbersome disassembly and high operational risks, leading to potential equipment safety hazards. It provides a device for applying grease and detecting broken wires on high-altitude wire ropes for offshore platforms. This invention solves the above difficulties from a technical perspective while ensuring worker safety. It enables comprehensive grease maintenance and full-process broken wire detection on wire ropes using low-altitude traction ropes, without any electrical equipment. It is low-carbon, highly efficient, time-saving, labor-saving, and low-risk, significantly improving work efficiency.

[0007] This utility model is achieved by adopting the following technical solution.

[0008] A device for applying grease and detecting broken wires on high-altitude steel wire ropes for offshore platforms includes a pulley sleeve tube. Several grease injection mechanisms are connected to the outer wall of the pulley sleeve tube. Each grease injection mechanism includes a housing. Several springs are located inside the housing, with pressure plates at their lower ends. The pressure plates and the lower part of the housing form a grease storage area. Several grease injection nozzles communicating with the pulley sleeve tube are also located on the bottom surface of the housing. A broken wire detection ring is connected to the end face of the pulley sleeve tube.

[0009] Furthermore, the housing of the grease injection mechanism is made of a transparent material.

[0010] Furthermore, both the spring and the grease injection nozzle are arranged linearly.

[0011] Furthermore, a pulley walker assembly is provided inside the pulley sleeve tube.

[0012] Furthermore, the pulley walker group consists of several pulley walkers arranged radially in a circular shape.

[0013] Furthermore, the pulley walker includes a pulley with obliquely grooved blunt teeth that contact the steel wire rope; a pulley axle passes through the center of the pulley, and L-shaped connecting rods are connected to the pulley axles on both sides of the pulley, with a spring column sleeved on the connecting rod; the end of the spring column away from the pulley axle is connected to the inner wall of the pulley sleeve tube, a retaining ring is provided on the spring column, and a pulley spring is sleeved on the spring column between the retaining ring and the pulley axle.

[0014] Furthermore, the pulley sleeve tube is composed of two identical body parts joined together, with a central hole formed in the center of the pulley sleeve tube for the steel wire rope to pass through.

[0015] Furthermore, a counterweight block is also connected to the bottom of the pulley sleeve tube.

[0016] Furthermore, the upper part of the pulley sleeve tube is provided with a fixed pulley limiting guide device anchor point.

[0017] This application has the following beneficial effects.

[0018] This invention enables the device to perform overall maintenance on wire ropes and detect broken wires by dragging a traction rope at low altitudes, thereby accurately anchoring the location of broken wires. This invention fills the gap and deficiency of traditional methods that cannot maintain inaccessible sections at high altitudes, significantly promoting the integrity and service life of wire ropes. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of this utility model;

[0020] Figure 2 This is an exploded view of the grease injection mechanism of this utility model;

[0021] Figure 3 This is an exploded view of this utility model;

[0022] Figure 4 This is a schematic diagram of the structure of the pulley walker of this utility model.

[0023] Among them, 1. pulley sleeve tube, 2. grease injection mechanism, 3. broken wire detection ring, 4. sleeve tube counterweight, 5. spring, 6. grease injection mechanism housing, 7. grease injection nozzle, 8. fixed pulley limit guide device anchor point, 9. pulley walker assembly, 10. pulley walker, 11. pulley, 12. pulley spring, 13. spring center column, 14. pulley shaft. Detailed Implementation

[0024] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0025] like Figure 1-4 As shown, a device for applying grease and detecting broken wires in high-altitude steel wire ropes for offshore platforms includes a pulley sleeve tube 1, a pulley sleeve tube traction rope (not shown), a visible grease injection mechanism 2, a fixed pulley limit guide device anchor point 8, a broken wire detection ring 3, and a sleeve tube counterweight 4.

[0026] The pulley sleeve tube 1 is made of aluminum alloy, which is corrosion-resistant and wear-resistant. It has a cylindrical shape with a central hole for the steel wire rope to pass through. The pulley sleeve tube 1 is divided into two parts, which are connected by snap-fit ​​bolts. An internal cavity is formed within the pulley sleeve tube 1, serving as a storage chamber for lubricating grease and the pulley walker assembly 9. The pulley walker assembly 9 includes several pulley walkers 10, arranged radially in a ring of eight pulley walkers 10 per group. The pulley walker 10 includes a pulley 11 with a pulley shaft 14 passing through its center. L-shaped connecting rods are connected to the pulley shafts 14 on both sides of the pulley 11. A spring column 13 is fitted over the connecting rod, allowing the connecting rod to slide up and down within the spring column 13, without direct contact between the spring column 13 and the pulley shaft 14. The end of the spring column 13 furthest from the pulley shaft 14 is fixed to the inner wall of the pulley sleeve tube 1. A retaining ring is provided on the spring column 13, and a pulley spring 12 is fitted onto the spring column 13 between the retaining ring and the pulley shaft 14. The pulley 11 has a groove with obliquely grooved blunt teeth that contacts the wire rope. In practical applications, the walker can roll and slide by generating sufficient friction with the wire rope through the obliquely grooved blunt teeth. As the pulley rolls, the lubricating oil in the oil tank is applied to the outer surface of the wire rope. The two pairs of pulley springs 12 in the pulley walker 10 can apply external force to the pulleys 11 to hold the wire rope. Therefore, this utility model can be adapted to various conventional wire ropes of different diameters. Since the pulley walker 10 uses grooved pulleys with oblique grooved blunt teeth, it is beneficial for the entire device to descend or ascend, and it can also evenly apply the grease in the storage chamber to the outer surface of the wire rope.

[0027] Eight grease injection mechanisms 2, arranged at a 45° angle, are respectively installed on the outer wall of the pulley sleeve tube 1. Each grease injection mechanism 2 includes a grease injection mechanism housing 6 made of transparent acrylic material. Several low-strength springs 5 ​​are linearly arranged at the top of the grease injection mechanism housing 6. A pressure plate is located at the other end of each spring 5. The pressure plate and the lower area of ​​the grease injection mechanism housing 6 form a grease storage area. Several linearly arranged grease injection nozzles 7 are connected to the bottom surface of the grease injection mechanism housing 6, and these nozzles are connected to the inside of the pulley sleeve tube 1. When some of the grease in the pulley sleeve tube 1 is consumed by the wire rope, the internal pressure decreases, the springs 5 ​​return to their original deformation and extend, pressing the grease from the grease injection mechanism 2 into the gaps of the pulley sleeve tube walker. The grease is then evenly applied to the outer surface of the wire rope as the pulley rolls along it. Because the grease injection mechanism housing 6 is made of transparent material, the depletion of the grease inside can be visually identified, allowing for the addition of filler.

[0028] This application includes a broken wire detection ring 3 connected to the end face of the pulley sleeve tube 1. Specifically, the broken wire detection ring 3 is flexibly connected to the pulley sleeve tube 1. The inner ring of the broken wire detection ring 3 is made of polyurethane or polystyrene, and this inner ring can be replaced at any time. Polyurethane or polystyrene is easily scratched. If there is a broken wire in the wire rope, it will definitely bulge and lift, which will inevitably scratch the inner ring. By observing whether the detection ring is intact, it can be determined whether there is a broken wire in that section of the wire rope. Since polyurethane or polystyrene is quite sensitive to scratches, it can strongly characterize even minor broken wire scratches. Therefore, after one stroke of the pulley sleeve tube 1, the detection ring can be removed to observe whether there is a broken wire in that section of the wire rope. The broken wire detection ring 3 of this utility model can also smooth the grease on the outer surface of the wire rope, achieving the effect of uniform grease application.

[0029] This application also includes a sleeve counterweight 4 connected to the pulley sleeve tube 1. The sleeve counterweight 4 is connected to the vertical lower part of the pulley sleeve tube 1 via a screw and nut. The sleeve counterweight 4 increases the overall gravitational potential energy of the device, facilitating downward displacement of the device under gravity. The number of counterweights in this utility model can be adjusted in real time according to the inclination angle of the high-altitude steel wire rope.

[0030] The present invention provides a fixed pulley limiting guide device anchor point 8 on the upper part of the pulley sleeve tube 1, and the fixed pulley limiting guide device anchor point 8 serves as a rope hole through which the pulley sleeve tube traction rope passes.

[0031] The implementation process of this utility model includes the following steps: First, the fixed pulley limiting guide device is fixed at the starting end of the device. The pulley sleeve tube 1, pre-filled with grease, and eight grease injection mechanisms 2 are connected. Then, the pulley sleeve tube 1 and the wire rope are tightly bound together using a cylindrical semi-open snap-fit ​​bolt connection, allowing the wire rope to quickly engage or disengage. Simultaneously, the threaded engagement of the bolts and nuts provides axial tightening and locking force, improving connection stability. Next, a sleeve tube counterweight 4, capable of generating gravity traction, is suspended below the pulley sleeve tube 1. The weight and number of this counterweight are selected based on the angle between the wire rope to be tested and the plumb line. Subsequently, the broken wire detection ring 3 is tightly bound to the wire rope and simultaneously softly connected to the pulley sleeve tube 1, causing it to move synchronously with the pulley sleeve tube 1. Finally, by dragging the pulley sleeve tube traction rope at low altitude, the device is moved horizontally or vertically with the axis of the wire rope to be tested as the direction of displacement (for horizontal displacement, a double traction rope mode can be adopted). In this implementation process, the device evenly applies lubricant to the steel wire rope under test and detects broken wires at the points of breakage using the broken wire detection ring 3. The entire implementation process is simple to operate, with controllable safety risks. It not only fills the gap in traditional methods but also provides reference values ​​for subsequent steel wire rope integrity data.

[0032] The kinetic energy of this invention comes from the gravitational potential energy generated by the counterweight and the manual pulling force. It requires no additional electrical equipment, is inexpensive, and is highly operable.

[0033] 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 device for applying lubricating grease and detecting broken wires on high-altitude steel wire ropes for offshore platforms, comprising a pulley sleeve tube (1), characterized in that: Several grease injection mechanisms (2) are connected to the outer wall of the pulley sleeve tube (1). Each grease injection mechanism (2) includes a grease injection mechanism housing (6). Several springs (5) are provided inside the upper part of the grease injection mechanism housing (6). A pressure plate is provided at the lower end of the springs (5). The pressure plate and the lower part of the grease injection mechanism housing (6) form a grease storage area. Several grease injection nozzles (7) communicating with the pulley sleeve tube (1) are also provided on the bottom surface of the grease injection mechanism housing (6). A broken wire detection ring (3) is connected to the end face of the pulley sleeve tube (1).

2. The device for applying grease and detecting broken wires on high-altitude steel wire ropes for offshore platforms according to claim 1, characterized in that: The housing (6) of the grease injection mechanism is made of a transparent material.

3. The device for applying lubricating grease and detecting broken wires on high-altitude steel wire ropes for offshore platforms according to claim 1, characterized in that: The spring (5) and the grease injection nozzle (7) are both arranged in a linear fashion.

4. The device for applying lubricating grease and detecting broken wires on high-altitude steel wire ropes for offshore platforms according to claim 1, characterized in that: The pulley sleeve tube (1) is equipped with a pulley walking device assembly (9).

5. The device for applying grease and detecting broken wires on high-altitude steel wire ropes for offshore platforms according to claim 4, characterized in that: The pulley walker group (9) consists of several pulley walkers (10) arranged radially in a circular shape.

6. The device for applying grease and detecting broken wires on high-altitude steel wire ropes for offshore platforms according to claim 5, characterized in that: The pulley walker (10) includes a pulley (11) with oblique grooves and blunt teeth that contact the wire rope. A pulley shaft (14) is inserted through the center of the pulley (11). L-shaped connecting rods are connected to the pulley shafts (14) on both sides of the pulley (11). A spring column (13) is sleeved on the connecting rod. The end of the spring column (13) away from the pulley shaft (14) is connected to the inner wall of the pulley sleeve tube (1). A retaining ring is provided on the spring column (13). A pulley spring (12) is sleeved on the spring column (13) between the retaining ring and the pulley shaft (14).

7. The device for applying lubricating grease and detecting broken wires on high-altitude steel wire ropes for offshore platforms according to claim 1, characterized in that: The pulley sleeve tube (1) is composed of two identical body parts joined together, with a central hole formed in the center of the pulley sleeve tube (1) for the steel wire rope to pass through.

8. The device for applying grease and detecting broken wires on high-altitude steel wire ropes for offshore platforms according to claim 1, characterized in that: The bottom of the pulley sleeve tube (1) is also connected to a sleeve tube counterweight (4).

9. The device for applying lubricating grease and detecting broken wires on high-altitude steel wire ropes for offshore platforms according to claim 1, characterized in that: The upper part of the pulley sleeve tube (1) is provided with a fixed pulley limiting guide device anchor point (8).

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