Low-friction fairlead

Abstract

The utility model provides a fairlead with low friction force, and particularly relates to the field of ship and ocean engineering equipment, the fairlead comprises a front roller, a side roller, a limiting cushion block and a fairlead frame, and the fairlead is formed in the space among the front roller, the side roller and the limiting cushion block. The friction force generated by the fairlead and the cable in the using process is obviously reduced, and the service life of the cable and the fairlead is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of ship and ocean engineering equipment, in particular to a low friction force fairlead. BACKGROUND

[0002] The statements in this section merely provide background information related to the present disclosure and do not necessarily constitute the prior art.

[0003] In the process of ship berthing, mooring and offshore operation, as a key component connecting the ship and the shore or floating facilities, the fairlead plays an important role in guiding the cable to the right direction, preventing the cable from wearing and protecting the ship structure. In the long-term use of the traditional fairlead design, the friction between the cable and the inner wall of the fairlead will cause the cable to wear out, and the high friction force may also cause the cable to be difficult to operate, affecting the operation efficiency and safety. SUMMARY

[0004] To solve the above problems, the utility model provides a low friction force fairlead, the utility model relates to:

[0005] The fairlead, the side roller, the side roller shaft core, the side fixed frame, the positive roller, the positive roller shaft core, the positive fixed frame, the limiting pad.

[0006] Two positive fixed frames are installed below the inner side of the fairlead, the positive roller shaft core is connected between the fixed frames, the positive roller is installed outside the positive roller shaft core, four side fixed frames arranged in upper and lower directions are installed on the left and right sides of the fairlead, the side roller shaft core is installed between every two side fixed frames, the side roller is installed outside the side roller shaft core, a limiting pad is installed above the inner side of the fairlead, and the space between the four side rollers, the positive roller and the limiting pad forms the fairlead.

[0007] Further, the distance between the side roller and the positive roller is greater than the cable diameter, the distance between the adjacent two side rollers is greater than the cable diameter, and the distance between the side roller and the limiting pad is also greater than the cable diameter.

[0008] Preferably, the side roller and the positive roller are cylindrical structures with wide sides and narrow middle, the limiting pad is a trapezoid with a concave arc surface on one side, and the position of the limiting pad is slightly higher than the side rollers on both sides.

[0009] Compared with the prior art, the utility model has the beneficial effects that:

[0010] Significantly reduce the friction force: when the cable passes through the fairlead and contacts the side roller and the positive roller, the side roller and the positive roller rotate around the shaft core, converting sliding friction into rolling friction, effectively reducing the friction between the fairlead and the cable, and prolonging the service life of the cable and the fairlead. BRIEF DESCRIPTION OF DRAWINGS

[0011] The accompanying drawings, which form part of this specification, are used to provide a further understanding of this utility model. The illustrative embodiments of this utility model and their descriptions are used to explain this utility model and do not constitute an improper limitation of this utility model.

[0012] Figure 1 A schematic diagram of a low-friction cable guide hole;

[0013] The components are: 1. Limiting pad; 2. Side roller; 3. Cable guide frame; 4. Side roller shaft; 5. Side fixing frame; 6. Front roller shaft; 7. Front roller; 8. Cable guide hole; 9. Front fixing frame. Detailed Implementation

[0014] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0015] It should be noted that the following detailed description is illustrative and intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains.

[0016] like Figure 1 As shown, the low-friction cable guide hole provided by this utility model includes a cable guide frame 3, a front roller 7, a side roller 2, and a limiting pad 1.

[0017] Two positive fixing brackets 9 are installed directly below the inner side of the cable guide frame 3. A positive roller shaft core 6 is connected between the fixing brackets 9. A positive roller 7 is installed on the outside of the positive roller shaft core. Four side fixing brackets 5 are installed on the left and right sides of the inner side of the cable guide frame 3, and a side roller shaft core 4 is installed between every two side fixing brackets 5. A side roller 2 is installed on the outside of the side roller shaft core 4. A limiting pad 1 is installed directly above the inner side of the cable guide frame 3. The space between the limiting pad 1, the side roller 2 and the positive roller 7 forms a cable guide hole 8.

[0018] In a preferred embodiment, the distance between the side roller 2 and the front roller 7 is greater than the cable diameter, the distance between two adjacent side rollers 2 is greater than the cable diameter, and the distance between the side roller 2 and the limiting pad 1 is also greater than the cable diameter, so as to prevent the cable from getting stuck in the gap during unstable movement and causing device failure.

[0019] In another preferred embodiment, the side rollers 2 and the front rollers 7 are cylindrical structures that are wide at both sides and narrow in the middle, and the limiting pad 1 is a trapezoid with one side concave. This structure makes the cable guide hole 8 formed by the installation of the side rollers 2 and the front rollers 7 fit the shape of the traditional cable guide hole more closely, while reducing the contact area with the cable and further reducing friction. At the same time, the position of the limiting pad 1 is slightly higher than the side rollers on both sides. This arrangement makes the cable contact the side rollers first, thereby reducing friction. The limiting pad 1 only plays a limiting role in emergency situations, reducing the friction between the device and the cable.

[0020] In this embodiment, the cable passes through, as Figure 1 The cable guide hole 8 shown in the figure comes into contact with the side roller 2 and the front roller 7 of this utility model when the cable moves. The side roller 2 and the front roller 7 are subjected to frictional force and rotate around the measuring shaft core 4 and the front shaft core 6, which converts the sliding friction between the cable and the cable guide device into rolling friction. At the same time, in order to avoid the occurrence of rare cases, when the cable movement trajectory is out of control, the limiting pad 1 above the cable guide hole 8 can prevent the cable from deviating from the running trajectory.

[0021] 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.

[0022] Although the specific embodiments of the present utility model have been described above in conjunction with the accompanying drawings, this is not intended to limit the scope of protection of the present utility model. Those skilled in the art should understand that various modifications or variations that can be made by those skilled in the art without creative effort based on the technical solution of the present utility model are still within the scope of protection of the present utility model.

Claims

1. A low-friction chock, characterized by, Include: Cable guide, side roller, side roller shaft core, side fixed frame, positive roller, positive roller shaft core, positive fixed frame, limit pad; The left and right sides of the cable guide are provided with four side fixed frames arranged in two rows, a side roller shaft core is arranged between every two side fixed frames, and a side roller is arranged outside the side roller shaft core; Two positive fixed frames are arranged on the inner side of the cable guide, a positive roller shaft core is arranged between the two positive fixed frames, and a positive roller is arranged outside the positive roller shaft core; A limit pad is arranged on the inner side of the cable guide.

2. A fairlead according to claim 1, wherein The space between the four side rollers, the positive roller and the limit pad forms the cable guide hole, which is an oval shape.

3. A low friction fairlead as defined in claim 1, wherein, The side roller and the positive roller are both cylindrical structures with wide sides and narrow middle.

4. A fairlead according to claim 1, wherein the fairlead is a low friction fairlead. The limit pad is a trapezoid with a concave arc on one side, and the position is slightly higher than the side rollers on both sides.

Images