Cable straightening device

Abstract

The invention discloses a cable straightening device which comprises at least one straightening unit, and the straightening unit comprises a fixed support used for sleeving and fixing a to-be-straightened area of a cable; the straightening assembly is located in the fixed support and comprises at least one straightening plate, and the straightening plates can abut against the periphery of the cable and apply radial pressure to the cable; one end of the jacking assembly is connected with the straightening plate, and the jacking assembly is used for driving the straightening plate to move in the radial direction so as to press or release the cable. According to the technical scheme, the to-be-straightened area of the cable is sleeved with the fixing support, the jacking assembly is arranged to drive the straightening assembly to press or release the cable, the device aims at modularized and controllable micro-processing of local and slight deformation of the cable, the slight deformation can be straightened quickly and efficiently, and the straightening efficiency is improved. And long-time secondary heating straightening is avoided, and the cable straightening precision and straightening efficiency in the scenes of submarine cable flexible joint manufacturing or engineering field repair and the like are improved.

Description

Cable straightening device Technical Field

[0001] This application belongs to the field of high-voltage cable manufacturing technology, and specifically relates to a cable straightening device. Background Technology

[0002] Cable straightening is a crucial step in the manufacturing of high-voltage cross-linked polyethylene submarine cable expansion joints and the installation of cable accessories. High-voltage cables have large diameters and high rigidity, requiring localized straightening in critical construction areas to ensure proper connection with joints and terminals, prevent significant conductor eccentricity during expansion joint manufacturing, alleviate bending stress in the insulation layer, improve the uniformity of the electric field distribution, and guarantee the safe, stable, and long-term operation of the cable system.

[0003] Current technologies primarily employ two cable straightening methods: traditional high-temperature mechanical straightening and room-temperature mechanical straightening. Traditional high-temperature mechanical straightening involves heating the cable for an extended period (typically exceeding 10 hours) to soften it, then straightening it using mechanical clamping, followed by cooling and shaping. This method can take tens of hours per straightening cycle. After straightening, due to the release of residual stress within the material, the cable may slightly bend again after the external force is removed. There is a lack of effective and rapid correction methods for such slight deformations, often requiring a second, equally time-consuming heating and straightening process, severely slowing down production. Room-temperature mechanical straightening involves applying mechanical force to the cable at room temperature using multi-directional compression or traction equipment. This method typically requires complex and bulky straightening equipment, used for overall straightening of larger bends during long-distance cable laying. The straightening accuracy requirements are relatively low, and traction equipment is required. The size of the equipment and the operating method make this method highly unsuitable for straightening "localized slight deformations" in space-constrained, high-precision scenarios such as flexible joint manufacturing, accessory installation, or on-site emergency repairs. Summary of the Invention

[0004] The purpose of this application is to provide a cable straightening device that meets the straightening requirements for cables with slight deformation, thereby improving the efficiency and accuracy of cable straightening.

[0005] To achieve the above objectives, this application provides a cable straightening device, comprising at least one straightening unit, the straightening unit including:

[0006] A fixed support is used to mount and fix the cable to be straightened in the area to be straightened; a straightening assembly is located inside the fixed support and includes at least one straightening plate, which is capable of abutting against the outer periphery of the cable and applying radial pressure to the cable; a clamping assembly is connected at one end to the straightening plate, which is used to drive the straightening plate to move radially to achieve clamping or releasing of the cable.

[0007] In some embodiments, there are multiple straightening plates arranged at intervals along the circumference. Each of the multiple straightening plates has an arc-shaped structure, and the arc-shaped surface of the straightening plate is adapted to the outer circumferential surface of the cable. The multiple straightening plates enclose a straightening space for the area of ​​the cable to be straightened to be placed.

[0008] In some embodiments, the straightening plate is detachably mounted on one end of the clamping assembly, which drives multiple straightening plates to move synchronously toward or away from the cable to form a ring structure or to separate circumferentially from each other.

[0009] In some embodiments, the clamping assembly includes a lead screw fixing seat and a rotating lead screw. The lead screw fixing seat is connected to one end of the rotating lead screw and is connected to the protruding surface of the straightening plate. The rotating lead screw can move radially and drive the straightening plate to move, so as to clamp or release the cable.

[0010] In some embodiments, the rotating lead screw is threaded through the fixed support, and the tightening assembly further includes a handwheel and a locking nut. The handwheel is connected to the end of the rotating lead screw away from the straightening plate, and the rotation of the handwheel is used to drive the rotating lead screw to rotate around its own axis. The locking nut is sleeved on the outer circumference of the rotating lead screw and threadedly connected to the rotating lead screw, and the locking nut is used to lock the rotating lead screw.

[0011] In some embodiments, the interior of the lead screw fixing seat forms a cavity for one end of the rotating lead screw to be movably inserted, and the end of the rotating lead screw is in point contact with the protruding surface of the straightening plate.

[0012] In some embodiments, one end of the rotating lead screw has a stepped structure, and the lead screw fixing seat has a stepped hole that mates with the stepped structure. The stepped hole includes a first hole segment and a second hole segment with successively increasing diameters. The straightening plate is installed on the side of the lead screw fixing seat near the second hole segment. The side of the stepped structure facing the straightening plate forms an arc-shaped surface, and the arc-shaped surface makes point contact with the protruding surface of the straightening plate.

[0013] In some embodiments, the fixed support includes a first fixed section and a second fixed section formed by splicing. Both the first fixed section and the second fixed section are semi-circular structures. Both free ends of the first fixed section and the second fixed section are provided with connecting lugs. The corresponding connecting lugs on the first fixed section and the second fixed section are detachably connected by fasteners. The first fixed section is provided with a positioning block, and the second fixed section is provided with a positioning groove that engages with the positioning block.

[0014] In some embodiments, the cable straightening device further includes a connecting component, and the number of straightening units is multiple. The multiple straightening units are distributed at intervals along the length direction of the connecting component, and one straightening unit is connected to each end of the connecting component. The connecting component is used to connect the multiple straightening units into a whole and realize the overall fixation and length adjustment of the cable straightening device.

[0015] In some embodiments, the connecting assembly includes a connecting rod with a strip-shaped hole along its length, and the straightening unit disposed between the two ends of the connecting rod is movably connected to the connecting rod along the length of the strip-shaped hole.

[0016] The above technical solution involves fitting a fixed support onto the cable's straightening area and using a tightening component to drive the straightening component to press or release the cable. By providing a dedicated cable straightening device with a clearly defined structure and integrated functions, the straightening operation is transformed from the traditional long-term, complex process of "heating-clamping-cooling" or relying on large traction equipment into a modular, controllable microprocessor for localized, minor cable deformation. This allows for rapid and efficient straightening of minor deformations, avoiding prolonged secondary heating and straightening, and improving the accuracy and efficiency of cable straightening in scenarios such as submarine cable joint manufacturing or on-site emergency repairs.

[0017] Other features and advantages of the embodiments of this application will be described in detail in the following detailed description section. Attached Figure Description

[0018] The accompanying drawings are provided to further illustrate the embodiments of this application and form part of the specification. They are used together with the following detailed description to explain the embodiments of this application, but do not constitute a limitation on the embodiments of this application. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without any creative effort. In the drawings: Figure 1 is a structural schematic diagram of the cable straightening device of this application; Figure 2 is a schematic diagram of the installation connection between the rotating lead screw, the lead screw fixing seat, and the straightening plate of this application; Figure 3 is a schematic diagram of the installation connection between the connecting component and the fixed bracket of this application.

[0019] Explanation of reference numerals in the attached figures Detailed Implementation

[0020] The specific embodiments of this application will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit this application.

[0021] The cable straightening device according to this application is described below with reference to the accompanying drawings.

[0022] This application provides a cable straightening device, as shown in FIG1. ​​The cable straightening device of this embodiment has at least one straightening unit, which includes a fixed support 1, a straightening component 2, and a tightening component 3. The fixed support 1 is used to fit and fix the cable to be straightened in the area to be straightened; the straightening component 2 is located inside the fixed support 1 and includes at least one straightening plate 21, which can abut against the outer periphery of the cable and apply radial pressure to the cable; one end of the tightening component 3 is connected to the straightening plate 21, and the tightening component 3 is used to drive the straightening plate 21 to move radially to achieve clamping or releasing of the cable.

[0023] In this embodiment, a dedicated cable straightening device with a well-defined structure and integrated functions is provided. This transforms the straightening operation from the traditional, lengthy, and complex "heat-clamping-cooling" process, or the reliance on large traction equipment, into a modular, controllable microprocessor for addressing localized, minor cable deformations. Primarily applied to the manufacturing of submarine cable joints and the installation of cable accessories, it enables rapid and efficient straightening of minor deformations, avoiding lengthy secondary heating straightening processes. This improves the accuracy and efficiency of cable straightening in scenarios such as submarine cable joint manufacturing or on-site emergency repairs. This cable straightening device precisely targets the application scenario of the technical problem, laying the structural foundation for achieving "fast, efficient, and accurate" cable straightening. It is particularly suitable for space-constrained and precision-critical applications such as joint manufacturing and accessory installation.

[0024] In this embodiment, there are multiple straightening plates 21 arranged at intervals along the circumference. All straightening plates 21 are arc-shaped structures. The arc-shaped surface of the straightening plate 21 is adapted to the outer circumferential surface of the cable. The multiple straightening plates 21 enclose a straightening space for the cable to be straightened area to be placed.

[0025] A straightening space is formed by multiple circumferentially arranged arc-shaped straightening plates 21. This space can apply radial pressure simultaneously or selectively from multiple directions around the cable circumference, which helps to more evenly correct cable bending or eccentricity and avoid local damage or new stress concentration that may be caused by single-point pressure. In addition, the arc-shaped structure naturally fits the outer circle of the cable, increasing the contact area and dispersing the pressure. While effectively applying force, it reduces the risk of scratch damage to the cable's outer sheath or insulation layer. The straightening space formed by the enclosure can flexibly adjust the position of each straightening plate 21 according to the cable diameter and bending shape to achieve targeted straightening for different bending directions and degrees.

[0026] In this embodiment, the straightening plate 21 is detachably mounted on one end of the clamping assembly 3 to accommodate cables of different diameters. Specifically, the clamping assembly 3 drives multiple straightening plates 21 to move synchronously toward or away from the cable, so as to splice them into a circular structure or separate them circumferentially. The detachable arrangement of the straightening plate 21 and the clamping assembly 3 facilitates the quick replacement of the straightening plate 21 with the corresponding arc length according to the cable specifications (different diameters, materials), greatly improving the versatility and applicability of the device, and also facilitating the replacement and maintenance of worn parts; the clamping assembly 3 drives multiple straightening plates 21 to move synchronously, making the operation simpler and more efficient. When it is necessary to tighten or loosen the entire cable, it is not necessary to adjust each straightening plate 21 individually, saving operation time and ensuring the symmetry and consistency of the applied force.

[0027] The cable straightening device of this embodiment is small in size, compact in structure, easy to transport and install, and low in cost. It is suitable for the straightening and micro-processing of cables with a wide range of diameters. Furthermore, through the replaceable component structure and the reasonable design of the straightening plate 21, it can adapt to cables of different diameters and materials, and has wide applicability.

[0028] It should be noted that in this embodiment, there are multiple clamping components 3, and the number of clamping components 3 is adapted to the number of straightening plates 21, that is, one clamping component 3 drives one straightening plate 21 to move linearly. Specifically, in this embodiment, there are four clamping components 3, and four straightening plates 21 are synchronously arranged. The four clamping components 3 are evenly spaced along the circumference and are all connected to the fixed support 1.

[0029] In this embodiment, multiple straightening plates 21 enclose a straightening space into which the area to be straightened of the cable is placed. The straightening space is a closed space formed by the multiple straightening plates 21, and the aperture of this straightening space is equal to the diameter of the cable. The concave surfaces of the multiple straightening plates 21 completely adhere to the cable along its circumference, and the straightening plates 21 apply force to compress the cable to straighten it. The straightening plates 21 can be joined close to each other to form a closed straightening space, or they can be spaced far apart to form an open straightening space. In another preferred embodiment, the aperture of the closed straightening space is smaller than the diameter of the cable. When the aperture of the straightening space is smaller than the diameter of the cable, the enclosing straightening plates 21 are in a stretched state, and a small area of ​​the cable's outer periphery is not covered by the straightening plates 21. However, the multiple straightening plates 21 distributed circumferentially and simultaneously applying pressure to the cable can still effectively straighten it.

[0030] In this embodiment, the clamping assembly 3 includes a lead screw fixing seat 31 and a rotating lead screw 32. The lead screw fixing seat 31 is connected to one end of the rotating lead screw 32. The lead screw fixing seat 31 is connected to the protruding surface of the straightening plate 21. The rotating lead screw 32 can move radially and drive the straightening plate 21 to move, so as to achieve clamping or releasing of the cable.

[0031] Specifically, the engagement between the rotating lead screw 32 and the lead screw fixing seat 31, utilizing the self-locking nature of the threaded drive and precise displacement control, enables high-precision, micro-adjustment of the position of the straightening plate 21 (i.e., the pressure applied to the cable). This is crucial for handling minor deformations, preventing over- or under-pressure. The structure is stable; the threaded pair has self-locking characteristics, ensuring that even after adjustment, the position of the straightening plate 21 remains reliably maintained even when the driving force is removed (e.g., stopping the rotation of the handwheel 33), ensuring continuous and stable straightening pressure and preventing poor results due to pressure backflow during straightening. The lead screw fixing seat 31 provides a stable connection and support point for the straightening plate 21, ensuring that the thrust of the rotating lead screw 32 is effectively and vertically transmitted to the straightening plate 21.

[0032] In this embodiment, the rotating lead screw 32 is threaded through the fixed support 1. The tightening assembly 3 also includes a handwheel 33 and a locking nut 34. The handwheel 33 is connected to the end of the rotating lead screw 32 away from the straightening plate 21. The rotation of the handwheel 33 is used to drive the rotating lead screw 32 to rotate around its own axis. The locking nut 34 is sleeved on the outer circumference of the rotating lead screw 32 and threadedly connected to the rotating lead screw 32. The locking nut 34 is used to lock the rotating lead screw 32.

[0033] Driven by an external handwheel 33, the device operates purely manually without the need for complex power sources such as electric or hydraulic systems. This simplifies the device's structure, reduces costs, and makes it ideal for use in engineering sites or emergency repair environments where power supply may be unavailable. The handwheel 33 increases the lever arm, allowing the operator to drive the rotating screw 32 with less force, generating a larger axial thrust and reducing operational intensity. Integrating the drive mechanism (handwheel 33, rotating screw 32) with the main structure (fixed support 1) makes the device more compact, facilitating transport and installation.

[0034] This improvement retains all the advantages of the original purely manual operation (handwheel 33 drive), such as simple structure, low cost, and adaptability to environments without power supply. By adding a simple and reliable mechanical component, the locking nut 34, the performance level of the core function (pressure holding) is significantly enhanced. Straightening cables, especially when dealing with slight deformations due to residual internal stress, requires a continuous and stable straightening force over a relatively long period (e.g., 0.5-1 hour). Relying solely on the self-locking characteristic of the screw thread pair 32 carries a slight risk of loosening under prolonged holding or vibration, which could lead to a decrease in straightening pressure and affect the final straightening effect. With the addition of the locking nut 34, after the rotating screw 32 is adjusted to the required position and appropriate pressure is applied via the handwheel 33, the locking nut 34 can be tightened immediately, pressing its end face tightly against the outer surface of the fixed support 1. This forms an additional mechanical locking barrier, creating a double safety net with the self-locking thread of the rotating screw 32. This effectively resists accidental rotation or loosening of the rotating screw 32 due to factors such as vibration, material creep, or stress release, ensuring that the straightening force remains highly stable and does not decay throughout the entire straightening period, fundamentally guaranteeing straightening accuracy and long-term reliability. In engineering sites or production environments, the device may be accidentally touched. The locking nut 34 provides a visible and operable indication of the locked status. After the operator tightens the locking nut 34, they know that the device is locked, effectively preventing accidental changes in straightening pressure due to accidental contact with the handwheel 33. This avoids the risk of straightening failure or cable damage that may result, improving the safety of the operation and the certainty of the results. During the straightening process, the threaded pair of the rotating lead screw 32 is subjected to axial pressure for an extended period. Without the locking nut 34, the force-bearing side of the thread may continuously bear the entire load, potentially accelerating wear and affecting transmission accuracy under long-term or repeated use. After the locking nut 34 is tightened, a portion of the axial load is transferred to the fixed support 1, distributing the direct force on the threaded pair. This helps reduce wear on the threaded pair, extends the service life of the threaded holes of the rotating lead screw 32 and the fixed support 1, and maintains long-term accuracy.

[0035] In this embodiment, the interior of the lead screw fixing seat 31 forms a cavity for one end of the rotating lead screw 32 to be movably inserted into, and the end of the rotating lead screw 32 has point contact with the protruding surface of the straightening plate 21. When the rotating lead screw 32 rotates, if its end is fixedly connected to the straightening plate 21, it will cause the straightening plate 21 to rotate together, which can easily scratch the cable surface. By using a movable insertion and forming a point contact, the rotating lead screw 32 can rotate freely, and its axial thrust is transmitted to the straightening plate 21 through the point contact. The straightening plate 21 itself only undergoes radial translation and does not rotate circumferentially, fundamentally avoiding frictional damage to the cable caused by the rotation of the straightening plate 21. The point contact has relatively low requirements for the parallelism of the mating surfaces, reducing the difficulty of parts processing and assembly, and improving reliability.

[0036] Further, as shown in Figure 2, one end of the rotating lead screw 32 has a stepped structure, and the lead screw fixing seat 31 has a stepped hole 311 that mates with the stepped structure. The stepped hole 311 is the cavity through which one end of the rotating lead screw 32 is movably inserted. The stepped hole 311 includes a first hole section and a second hole section whose diameter increases sequentially towards the straightening plate 21. The straightening plate 21 is installed on the side of the lead screw fixing seat 31 near the second hole section. The stepped structure forms an arc-shaped surface on the side facing the straightening plate 21, and the arc-shaped surface makes point contact with the protruding surface of the straightening plate 21.

[0037] Specifically, the stepped structure and the stepped hole 311 not only serve to limit and guide the axial movement, preventing the rotating screw 32 from wobbling, but more importantly, they define the location of the point contact (at the apex of the arc-shaped surface), making the force transmission path clearer and more stable. The point contact between the arc-shaped surface and the raised surface of the straightening plate 21 has a small contact area, belonging to a low-pair contact, with low friction, making the rotating screw 32 rotate and advance more smoothly, and providing a better operating feel.

[0038] In this embodiment, the fixed support 1 includes a first fixed section 11 and a second fixed section 12 formed by splicing. Both the first fixed section 11 and the second fixed section 12 are semi-circular structures. Both free ends of the first fixed section 11 and the second fixed section 12 are provided with connecting ear plates 13. The corresponding connecting ear plates 13 on the first fixed section 11 and the second fixed section 12 are detachably connected by fasteners.

[0039] Specifically, the fixed support 1 is a Huff-type (two-half) splicing structure. This structure allows the device to be installed directly onto the area to be straightened from the cable side without requiring the cable end to pass through the device. This is a crucial and practical advantage for already laid cables, flexible joints under construction, or installation points with limited space, greatly improving installation convenience and applicability. By firmly locking the two fixed halves together with connecting lugs 13 and fasteners, a sufficiently rigid integral ring support structure is formed to withstand the reaction force generated during straightening. The split structure facilitates casting, machining, and transportation.

[0040] In this embodiment, the first fixing section 11 is provided with a positioning block 111, and the second fixing section 12 is provided with a positioning groove 121 that engages with the positioning block 111. When the first fixing section 11 and the second fixing section 12 are closed, the engagement of the positioning block 111 and the positioning groove 121 enables rapid and accurate initial positioning, ensuring that the two semicircular holes can be perfectly aligned to form a complete circular inner cavity, providing an accurate installation reference for the straightening plate 21. This avoids the tediousness and potential misalignment caused by relying entirely on bolt holes for alignment, simplifies the installation steps, improves assembly speed and consistency, and ensures repeatability accuracy for each installation.

[0041] In this embodiment, the cable straightening device further includes a connecting component 4. Multiple straightening units are distributed at intervals along the length of the connecting component 4. One straightening unit is connected to each end of the connecting component 4. The connecting component connects the multiple straightening units into a single unit and achieves overall fixation and length adjustment of the cable straightening device. Specifically, a strip-shaped hole is formed along the length of the connecting rod. The straightening unit located between the two ends of the connecting rod can be movably connected to the connecting rod along the length of the strip-shaped hole. A long strip-shaped hole is formed in the middle of the connecting rod. To address potential cable eccentricity and uneven outer diameter, a straightening unit located in the middle can slide freely within the hole along the cable axis, sliding according to the actual required straightening area for targeted micro-straightening within that area.

[0042] As shown in Figure 3, the cable straightening device includes three straightening units, which are arranged axially from left to right as a first straightening unit, a second straightening unit, and a third straightening unit. The first and third straightening units are connected to the two ends of the connecting assembly 4, respectively, and the second straightening unit is located between the first and second straightening units. In this embodiment, the three-point straightening by the three straightening units allows for cable straightening over a wider range, resulting in higher straightening efficiency and accuracy.

[0043] It should be noted that the cable straightening device in this embodiment has three straightening units. Those skilled in the art can set the number of straightening units to two, four, five, etc., according to the actual situation, and there is no unique limitation here.

[0044] In this embodiment, the connecting component 4 is specifically a connecting rod. There are two connecting rods, which are located at the two ends of the first fixed section 11 / second fixed section 12, respectively, and are connected to the connecting ear plate 13. Each connecting rod has an elongated hole in the middle, allowing the second straightening unit to slide along the cable's own axis within the hole. The straightening plate 21 in this straightening unit can accurately straighten and adjust a specific area of ​​the cable, meeting the requirements for the production of flexible joints.

[0045] For cables requiring straightening over a length (rather than a single point), multiple independent straightening units are connected in series to form a rigid frame via connecting rods. This allows for segmented, continuous, or selective multi-point pressure straightening of the cable, effectively handling curved sections of a certain length, enhancing the device's straightening capacity, and effectively eliminating issues caused by cable eccentricity and uneven outer diameter. The connecting rods link multiple straightening units together, providing mutual support and strengthening the overall structural rigidity and stability of the device over long spans. This prevents individual units from shifting under stress, ensuring that all straightening points work collaboratively and uniformly. The length of the connecting rods can be designed to be adjustable or replaceable, allowing the device to adapt to straightening requirements of different lengths, further enhancing its application flexibility.

[0046] The installation and operation method of the cable straightening device in this embodiment is as follows: 1. After the cable is pre-straightened by heating, the fixed support 1 of the Huff-type structure is installed in the area where the cable is to be straightened, and the upper and lower two-piece structure composed of the first fixed section 11 and the second fixed section 12 is fixed by bolts.

[0047] 2. Install connecting rods. Fix the two end fixed supports 1 as a whole using two connecting rods. Install the fixed support 1 of the straightening unit in the middle area at a reasonable position in the middle area using bolts. The position can be adjusted according to the actual straightening situation until the entire cable is straightened.

[0048] 3. Select a suitable straightening plate 21 according to the diameter of the cable to ensure the proper fit between the straightening plate 21 and the cable.

[0049] 4. Select the direction of force application according to the cable's bending orientation and degree. Adjust the handwheel 33 to press down the straightening plate 21 to apply a certain pressure to the cable, causing it to straighten under the force. After reaching the straightened dimensions, leave it for 0.5-1 hour before removing the device. During the straightening process, the pressure and position of the handwheel 33 can be adjusted according to the cable's condition to achieve precise cable straightening.

[0050] In the description of this application, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0051] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between components; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0052] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0053] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. A cable straightening device, characterized in that, The device includes at least one straightening unit, which includes: a fixed support (1) for fitting and fixing to the area of ​​the cable to be straightened; a straightening assembly (2) located inside the fixed support (1) and including at least one straightening plate (21), the straightening plate (21) being able to abut against the outer periphery of the cable and apply radial pressure to the cable; and a clamping assembly (3), one end of which is connected to the straightening plate (21), the clamping assembly (3) being used to drive the straightening plate (21) to move radially to achieve clamping or releasing of the cable.

2. The cable straightening device according to claim 1, characterized in that, The straightening plates (21) are multiple and arranged at intervals along the circumference. The multiple straightening plates (21) are all arc-shaped structures. The arc-shaped surface of the straightening plate (21) is adapted to the outer circumferential surface of the cable. The multiple straightening plates (21) enclose a straightening space for the area of ​​the cable to be straightened to be placed.

3. The cable straightening device according to claim 2, characterized in that, The straightening plate (21) is detachably installed at one end of the clamping assembly (3). The clamping assembly (3) is used to drive multiple straightening plates (21) to move synchronously toward or away from the cable, so as to splice them into a ring structure or separate them circumferentially.

4. The cable straightening device according to claim 2, characterized in that, The clamping assembly (3) includes a lead screw fixing seat (31) and a rotating lead screw (32). The lead screw fixing seat (31) is connected to one end of the rotating lead screw (32). The lead screw fixing seat (31) is connected to the protruding surface of the straightening plate (21). The rotating lead screw (32) can move radially and drive the straightening plate (21) to move, so as to achieve clamping or releasing of the cable.

5. The cable straightening device according to claim 4, characterized in that, The rotating lead screw (32) is threaded through the fixed support (1). The tightening assembly (3) also includes a handwheel (33) and a locking nut (34). The handwheel (33) is connected to the end of the rotating lead screw (32) away from the straightening plate (21). The rotation of the handwheel (33) is used to drive the rotating lead screw (32) to rotate around its own axis. The locking nut (34) is sleeved on the outer circumference of the rotating lead screw (32) and threadedly connected to the rotating lead screw (32). The locking nut (34) is used to lock the rotating lead screw (32).

6. The cable straightening device according to claim 4, characterized in that, The inside of the lead screw fixing seat (31) forms a cavity for one end of the rotating lead screw (32) to be movably inserted, and the end of the rotating lead screw (32) is in point contact with the protruding surface of the straightening plate (21).

7. The cable straightening device according to claim 6, characterized in that, One end of the rotating lead screw (32) has a stepped structure. The lead screw fixing seat (31) has a stepped hole (311) that is connected to the stepped structure. The stepped hole (311) includes a first hole section and a second hole section with increasing hole diameter. The straightening plate (21) is installed on the side of the lead screw fixing seat (31) near the second hole section. The stepped structure forms an arc surface on the side facing the straightening plate (21). The arc surface makes point contact with the protruding surface of the straightening plate (21).

8. The cable straightening device according to any one of claims 1 to 7, characterized in that, The fixed support (1) includes a first fixed section (11) and a second fixed section (12) formed by splicing. The first fixed section (11) and the second fixed section (12) are both semi-circular structures. The two free ends of the first fixed section (11) and the second fixed section (12) are provided with connecting ear plates (13). The corresponding connecting ear plates (13) on the first fixed section (11) and the second fixed section (12) are detachably connected by fasteners. The first fixed section (11) is provided with a positioning block (111), and the second fixed section (12) is provided with a positioning groove (121) that is inserted and engaged with the positioning block (111).

9. The cable straightening device according to any one of claims 1 to 7, characterized in that, The cable straightening device further includes a connecting component (4), and there are multiple straightening units. The multiple straightening units are distributed at intervals along the length direction of the connecting component (4). Each end of the connecting component (4) is connected to a straightening unit. The connecting component is used to connect the multiple straightening units into one unit and realize the overall fixation and length adjustment of the cable straightening device.

10. The cable straightening device according to claim 9, characterized in that, The connecting component (4) includes a connecting rod with a strip-shaped hole along its length. The straightening unit, which is disposed between the two ends of the connecting rod, is movably connected to the connecting rod along the length of the strip-shaped hole.

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