A multi-strand steel wire rope pre-deformation device

Abstract

This utility model relates to a pre-deformation device for multi-strand steel wire rope, belonging to the field of steel wire rope technology. It includes a support frame and a hanging ring fixedly connected to the top of the support frame. Pre-compression components for pre-compression are provided on both the left and right sides of the support frame. Each pre-compression component includes a first frame located on the left side of the support frame. First elastic telescopic members are fixedly connected to the inner left and right side walls of the first frame. First connecting frames are fixedly connected to opposite ends of the first elastic telescopic members on both sides. First pressure rollers are rotatably connected between the inner front and rear side walls of the first connecting frames. A second frame is located on the right side of the support frame. This multi-strand steel wire rope pre-deformation device, by setting first and second pressure rollers with different diameters, utilizes a smaller-diameter first pressure roller specifically for processing the inner strands, providing a larger bending curvature and precisely matching the smaller lay length of the inner strands. A larger-diameter second pressure roller is specifically for processing the outer strands, providing a smaller bending curvature.

Description

Technical Field

[0001] This utility model relates to the field of wire rope technology, specifically to a pre-deformation device for multi-strand wire ropes. Background Technology

[0002] Wire rope, as a crucial load-bearing component, is widely used in important fields such as elevators, mines, and port cranes. Its performance stability directly affects the safety of equipment and personnel. During the wire rope twisting process, the strands generate enormous internal stress due to torsional deformation, leading to a tendency for the finished wire rope to loosen and rotate, severely impacting its service life and safety performance.

[0003] To eliminate this residual stress, pre-deformation technology is widely used. Existing pre-deformation devices typically employ one or more sets of pressure rollers to bend all strands before the rope is assembled. However, for complex multi-strand wire ropes, the required ideal pre-deformation curvature differs significantly between the inner and outer strands due to their different spatial positions and twisting parameters. Traditional pre-deformation devices use pressure rollers of the same diameter to perform a "one-size-fits-all" bending process on all strands, making it difficult to accommodate the different needs of the inner and outer strands. This often results in insufficient deformation of the inner strands leading to excessive residual stress, or excessive deformation of the outer strands damaging their mechanical properties, ultimately preventing the wire rope from achieving its optimal performance in key aspects such as overall non-loosening and fatigue life. Therefore, a multi-strand wire rope pre-deformation device is proposed to address these issues. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a multi-strand steel wire rope pre-deformation device, which has advantages such as achieving differentiated pre-deformation and solves the problems mentioned in the background technology.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A multi-strand steel wire rope pre-deformation device includes a bracket and a hanging ring fixedly connected to the top of the bracket. The bracket is provided with pre-compression components for pre-compression on both the left and right sides.

[0007] The pre-compression assembly includes a first frame disposed on the left side of the support. First elastic telescopic members are fixedly connected to the inner left and right side walls of the first frame. A first connecting frame is fixedly connected to the opposite end of each of the first elastic telescopic members on both sides. A first pressure roller is rotatably connected between the inner front and rear side walls of the first connecting frame. A second frame is disposed on the right side of the support. Second elastic telescopic members are fixedly connected to the inner left and right side walls of the second frame. A second connecting frame is fixedly connected to the opposite end of each of the second elastic telescopic members on both sides. A second pressure roller is rotatably connected between the inner front and rear side walls of the second connecting frame.

[0008] Furthermore, a threaded shaft is rotatably connected to the inner top wall of the bracket, a threaded block is threadedly connected to the outer side of the threaded shaft, a connecting shaft is fixedly connected to the left and right sides of the top of the threaded block, a connecting plate is fixedly connected to the top of the connecting shaft on both sides, a connecting cylinder is fixedly connected to the bottom of the connecting plate, a fixed shaft is provided on the inner side of the connecting cylinder, and a fixed plate is fixedly connected to the bottom end of the fixed shaft.

[0009] Furthermore, the first frame is fixedly connected to the left side of the left fixed plate, and the second frame is fixedly connected to the right side of the right fixed plate.

[0010] Furthermore, the outer wall of the connecting cylinder is square, and the top of the inner side of the bracket has two receiving openings that are adapted to the connecting cylinder.

[0011] Furthermore, the top of the inner side of the bracket has two openings that are adapted to the connecting shaft, and the connecting shaft is slidably connected to the inner side of the corresponding opening.

[0012] Furthermore, a rotating hole adapted to the threaded shaft is provided at the bottom of the inner side of the bracket, and a torsion cap is fixedly connected to the bottom end of the threaded shaft.

[0013] Furthermore, the size of the first frame is smaller than the size of the second frame, and the diameter of the first pressure roller is smaller than the diameter of the second pressure roller.

[0014] Compared with the prior art, this utility model provides a multi-layer strand steel wire rope pre-deformation device, which has the following beneficial effects:

[0015] This multi-strand wire rope pre-deformation device uses a first pressure roller and a second pressure roller with different diameters. The smaller diameter first pressure roller is dedicated to processing the inner strands, providing a larger bending curvature and precisely matching the smaller lay pitch of the inner strands. The larger diameter second pressure roller is dedicated to processing the outer strands, providing a smaller bending curvature and precisely matching the larger lay pitch of the outer strands. This design ensures that both the inner and outer strands can obtain sufficient plastic deformation that is most suitable for their own characteristics, thereby greatly eliminating the residual torsional stress of the wire rope. Attached Figure Description

[0016] Figure 1 This is a cross-sectional view of the structure of this utility model;

[0017] Figure 2 This is a front view of the structure of this utility model;

[0018] Figure 3 This is a perspective view of the support structure in this utility model.

[0019] In the diagram: 1. Bracket; 2. Hanging ring; 3. First frame; 4. First elastic telescopic component; 5. First connecting frame; 6. First pressure roller; 7. Second frame; 8. Second elastic telescopic component; 9. Second connecting frame; 10. Second pressure roller; 11. Threaded shaft; 12. Threaded block; 13. Connecting shaft; 14. Connecting plate; 15. Connecting cylinder; 16. Fixed shaft; 17. Fixed plate. Detailed Implementation

[0020] 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.

[0021] Please see Figures 1 to 3 The multi-strand steel wire rope pre-deformation device in this embodiment includes a bracket 1 and a hanging ring 2 fixedly connected to the top of the bracket 1. Pre-compression components for pre-compression are provided on both the left and right sides of the bracket 1.

[0022] Please see Figure 1 In this embodiment, the pre-compression component includes a first frame 3 disposed on the left side of the bracket 1. The inner left and right side walls of the first frame 3 are fixedly connected with first elastic telescopic members 4. The opposite ends of the left and right side first elastic telescopic members 4 are fixedly connected with first connecting frames 5. The inner front and rear side walls of the first connecting frames 5 are rotatably connected with first pressure rollers 6. The right side of the bracket 1 is provided with a second frame 7. The inner left and right side walls of the second frame 7 are fixedly connected with second elastic telescopic members 8. The opposite ends of the left and right side second elastic telescopic members 8 are fixedly connected with second connecting frames 9. The inner front and rear side walls of the second connecting frames 9 are rotatably connected with second pressure rollers 10.

[0023] Specifically, the inner top wall of the bracket 1 is rotatably connected to a threaded shaft 11, the outer side of the threaded shaft 11 is threadedly connected to a threaded block 12, the top left and right sides of the threaded block 12 are fixedly connected to a connecting shaft 13, the top of the left and right connecting shafts 13 are fixedly connected to a connecting plate 14, the bottom of the connecting plate 14 is fixedly connected to a connecting cylinder 15, the inner side of the connecting cylinder 15 is provided with a fixing shaft 16, the bottom end of the fixing shaft 16 is fixedly connected to a fixing plate 17, the first frame 3 is fixedly connected to the left side of the left fixing plate 17, and the second frame 7 is fixedly connected to the right side of the right fixing plate 17.

[0024] It should be noted that this arrangement makes the first frame 3 and the second frame 7 easy to disassemble, maintain, and replace.

[0025] Specifically, the outer wall of the connecting cylinder 15 is square, and the top of the inner side of the bracket 1 has two receiving openings that are adapted to the connecting cylinder 15.

[0026] It should be noted that the outer wall of the connecting cylinder 15 is square, and forms a high-precision sliding pair with the square receiving opening on the bracket 1.

[0027] Specifically, the top of the inner side of the bracket 1 has two openings that are adapted to the connecting shaft 13, and the connecting shaft 13 is slidably connected to the inner side of the corresponding opening.

[0028] It should be noted that the opening at the top of the bracket 1 provides a precise vertical guide trajectory for the connecting shaft 13. The connecting shaft 13 slides within this opening, ensuring that the threaded block 12 driven by the threaded shaft 11 and the entire connecting plate 14 mechanism above it can rise and fall vertically smoothly without any sway.

[0029] Specifically, a rotating hole adapted to the threaded shaft 11 is provided at the bottom of the inner side of the bracket 1, and a torsion cap is fixedly connected to the bottom end of the threaded shaft 11.

[0030] Specifically, the size of the first frame 3 is smaller than the size of the second frame 7, and the diameter of the first pressure roller 6 is smaller than the diameter of the second pressure roller 10.

[0031] It should be noted that the diameter of the first pressure roller 6 is designed to be smaller than that of the second pressure roller 10, based on the manufacturing principle of multi-strand steel wire rope. The inner strands typically have a smaller lay length, requiring a smaller pre-deformation radius, which the smaller-diameter first pressure roller 6 can provide. Conversely, the outer strands have a larger lay length, requiring a larger pre-deformation radius, which is handled by the larger-diameter second pressure roller 10. This differentiated design ensures that both the inner and outer strands achieve sufficient and appropriate plastic deformation.

[0032] The working principle of the above embodiments is as follows:

[0033] After the rope-combining machine starts, the inner and outer wire rope strands from the twisting point are pulled together through this pre-deformation device. The inner strands first contact the first pressure rollers 6 on the left and right sides. Due to the smaller diameter of the first pressure rollers 6, they apply a bending plastic deformation with a larger curvature to the inner strands. This deformation matches its smaller lay length. The outer strands contact the second pressure rollers 10 on the left and right sides. Due to the larger diameter of the second pressure rollers 10, they apply a bending plastic deformation with a smaller curvature to the outer strands. This deformation matches its larger lay length. Throughout the process, the first elastic telescopic member 4 and the second elastic telescopic member 8 continuously provide a constant clamping force and absorb fluctuations caused by slight unevenness of the strands, ensuring stable bending force and preventing scratching or crushing of the strands.

[0034] The installation, connection, or setting methods disclosed in this embodiment are all common mechanical connection methods, and any method that can achieve its beneficial effects can be implemented.

[0035] It should be noted that the orientations or positional relationships indicated herein are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the purpose of facilitating the description of this application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0036] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0037] 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 which is defined by the appended claims and their equivalents.

Claims

1. A multi-strand steel wire rope pre-deformation device, comprising a bracket (1) and a hanging ring (2) fixedly connected to the top of the bracket (1), characterized in that: The bracket (1) is provided with pre-compression components on both the left and right sides for pre-compression. The pre-compression assembly includes a first frame (3) disposed on the left side of the bracket (1). The inner left and right side walls of the first frame (3) are fixedly connected with first elastic telescopic members (4). The opposite ends of the first elastic telescopic members (4) on the left and right sides are fixedly connected with first connecting frames (5). The inner front and rear side walls of the first connecting frames (5) are rotatably connected with first pressure rollers (6). The right side of the bracket (1) is provided with a second frame (7). The inner left and right side walls of the second frame (7) are fixedly connected with second elastic telescopic members (8). The opposite ends of the second elastic telescopic members (8) on the left and right sides are fixedly connected with second connecting frames (9). The inner front and rear side walls of the second connecting frames (9) are rotatably connected with second pressure rollers (10).

2. The multi-strand steel wire rope pre-deformation device according to claim 1, characterized in that: The inner top wall of the bracket (1) is rotatably connected to a threaded shaft (11), and a threaded block (12) is threadedly connected to the outer side of the threaded shaft (11). A connecting shaft (13) is fixedly connected to the left and right sides of the top of the threaded block (12). A connecting plate (14) is fixedly connected to the top of the connecting shaft (13) on both sides. A connecting cylinder (15) is fixedly connected to the bottom of the connecting plate (14). A fixing shaft (16) is provided on the inner side of the connecting cylinder (15). A fixing plate (17) is fixedly connected to the bottom end of the fixing shaft (16).

3. The multi-strand steel wire rope pre-deformation device according to claim 1, characterized in that: The first frame (3) is fixedly connected to the left side of the left fixed plate (17), and the second frame (7) is fixedly connected to the right side of the right fixed plate (17).

4. The multi-strand steel wire rope pre-deformation device according to claim 2, characterized in that: The outer wall of the connecting cylinder (15) is square, and the top of the inner side of the bracket (1) has two receiving openings that are adapted to the connecting cylinder (15).

5. The multi-strand steel wire rope pre-deformation device according to claim 2, characterized in that: The top of the inner side of the bracket (1) has two openings that are adapted to the connecting shaft (13), and the connecting shaft (13) is slidably connected to the inner side of the corresponding opening.

6. The multi-strand steel wire rope pre-deformation device according to claim 2, characterized in that: The bottom of the inner side of the bracket (1) is provided with a rotating hole that is compatible with the threaded shaft (11), and a torsion cap is fixedly connected to the bottom end of the threaded shaft (11).

7. The multi-strand steel wire rope pre-deformation device according to claim 1, characterized in that: The size of the first frame (3) is smaller than the size of the second frame (7), and the diameter of the first pressure roller (6) is smaller than the diameter of the second pressure roller (10).

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