A durable towed chain cable and towed chain for mechanical work

Abstract

The application discloses a durable drag chain cable for mechanical operation and a drag chain, relates to the technical field of cables, and discloses a durable drag chain cable for mechanical operation, which comprises a protection structure; the protection structure comprises a protection layer and a plurality of sealing assemblies; the protection layer is sleeved outside the outer coating layer, and the plurality of sealing assemblies are distributed on the protection layer at equal intervals; the sealing assembly comprises a sealing piece arranged on the inner side of the protection layer; a drag chain comprises a plurality of drag chain units; the drag chain unit comprises a main body and a mounting assembly; the two ends of the main body are rotationally connected with the end portions of adjacent main bodies, respectively; the mounting assembly is provided with a plurality of mounting ports for mounting the drag chain cable to pass through, and the position of the mounting assembly on the main body is adjustable along the length direction of the main body. The application can effectively reduce the influence of the bending of the drag chain cable on the normal electrical function of the cable, thereby prolonging the service life of the drag chain cable.

Description

Technical Field

[0001] This application relates to the technical field of cables, and in particular to a durable drag chain cable and drag chain for mechanical operations. Background Technology

[0002] With the rapid development of technology, various industries are adopting mechanized operations to meet production needs. However, with the increasing frequency of use, various mechanical equipment quality accidents are also occurring frequently. This is because ordinary drag chain cables are prone to problems such as spinning, core breakage, and deformation when used in mobile equipment, rendering the equipment unusable and causing huge economic losses to enterprises. In order to meet the needs of enterprises and consumers, the development of durable drag chain cables for mechanical operations is imperative and cannot be delayed.

[0003] Existing Chinese utility model patent CN217426392U discloses a durable, highly flexible drag chain cable for mechanical operations. This cable has a simple structure, is generally flexible, and exhibits good flexibility and bending resistance, making it less prone to conductor short circuits or open circuits, and insulation layer cracking. The cable's insulation and sheath materials have good high-temperature resistance, cold resistance, oil resistance, and flame retardant properties, are not prone to aging, and can adapt to complex operating environments, significantly extending its service life. The cable has strong load-bearing capacity, and the conductor is not easily damaged, ensuring the cable's normal electrical functions.

[0004] However, because drag chain cables used in mechanical operations need to be bent frequently during use, they are still prone to sheath damage due to bending, which can lead to a series of problems and affect the normal electrical function of the cable. Summary of the Invention

[0005] This application provides a durable drag chain cable and drag chain for mechanical operations, which can effectively reduce the impact of drag chain cable bending on the normal electrical function of the cable, thereby further extending the service life of the drag chain cable.

[0006] On the one hand, this application provides a durable drag chain cable for mechanical operations, employing the following technical solution: A durable drag chain cable for mechanical operations includes a filler layer, a plurality of cores twisted around the filler layer, a wrapping layer covering the outside of the plurality of cores, and an outer sheath covering the outside of the wrapping layer, and further includes a protective structure covering the outside of the outer sheath. The protective structure includes a protective layer and multiple sealing components; the protective layer is sleeved on the outside of the outer layer, and the multiple sealing components are evenly distributed on the protective layer along the length extension direction of the protective layer; The sealing assembly includes a seal disposed inside the protective layer and used to form a seal between the protective layer and the outer sheath.

[0007] By adopting the above technical solution, when the drag chain cable is bent, the seal maintains its sealing effect. At this time, the space inside the bend of the outer sheath layer in the area between the two seals at the bend point will be smaller than the space outside the bend of the outer sheath layer. At this time, the structure of the drag chain cable other than the protective structure is allowed to bend with a smaller degree inside the protective layer. This can effectively reduce the impact of drag chain cable bending on the structure of the drag chain cable other than the protective structure, thereby effectively ensuring the normal electrical function of the drag chain cable and further extending the service life of the drag chain cable.

[0008] Optionally, the seal is elastic and has an internal air cavity.

[0009] By adopting the above technical solution, the impact of the protective layer bending on the structure of the drag chain cable other than the protective structure can be effectively reduced. At the same time, the seals can still effectively seal after the protective layer is bent, so as to ensure the function of the protective structure in reducing the impact of the drag chain cable bending on the structure of the drag chain cable other than the protective structure. Furthermore, when a seal fails, the area between two adjacent seals still has a certain degree of sealing, so that the protective structure can still effectively play its protective role.

[0010] Optionally, the sealing assembly further includes an air valve; the air valve is disposed on the protective layer, communicates with the air cavity, and is used to control the expansion and contraction of the seal.

[0011] By adopting the above technical solution, users can easily control the expansion and contraction of the seal according to their needs. At the same time, users can selectively use the seal according to the main bending areas of the drag chain cable, thereby reducing the situation where the bending point coincides with the location of the seal, which leads to a decrease in the service life of the seal and a decrease in the protective effect of the protective structure.

[0012] Optionally, the sealing assembly may also include a warning element; The warning element is movably mounted on the air valve, and during the process of air leakage, the warning element is driven to move outward.

[0013] By adopting the above technical solution, when the seal shrinks due to long-term use, the warning piece will extend outward, making it easy for staff to detect the abnormality in time, re-inflate the seal to restore its sealing effect, or repair or replace it.

[0014] Optionally, the outer sheath has a rough surface, and the surface of the seal that comes into contact with the outer sheath is also rough.

[0015] By adopting the above technical solutions, the relative positional stability between the protective structure and the outer sheath can be effectively improved, thereby effectively improving the stability and reliability of the protective structure in performing its protective function. At the same time, it can effectively reduce the probability of wear caused by the bending of the drag chain cable leading to relative displacement between the protective structure and its internal structure.

[0016] On the other hand, this application provides a cable chain, which adopts the following technical solution: A cable chain for mounting a durable cable chain for mechanical operations as described above, comprising multiple cable chain units; The cable chain unit includes a main body and mounting components; The two ends of the main body are respectively rotatably connected to the ends of the adjacent main body, and its rotation axis is perpendicular to its own length direction; The mounting assembly is disposed inside the main body and has multiple mounting ports for the drag chain cable to pass through for installation, and its position on the main body is adjustable along the length of the main body.

[0017] By adopting the above technical solution, users can easily adjust the position of the mounting component on the main body according to the bending area of ​​the drag chain cable, so that the position where the drag chain cable passes through the mounting opening avoids the bending point as much as possible, thereby effectively reducing the probability of concentrated damage to the drag chain cable near the mounting component.

[0018] Optionally, the mounting assembly includes a movable seat, a frame, and a plurality of first elastic elements; The movable seat is movably connected to the main body along the length of the main body; the frame is movably disposed on the movable seat, and its direction of movement is parallel to the direction of movement of the movable seat, and the plurality of mounting ports are located on the frame; a plurality of first elastic elements are respectively disposed on both sides of the frame, the two ends of the first elastic elements are respectively connected to the movable seat and the frame, and the plurality of first elastic elements have a tendency to drive the frame to be positioned relative to the movable seat.

[0019] By adopting the above technical solution, after the position of the mounting component on the main body is adjusted, when the drag chain cable is bent during use, the frame at the corresponding bending area can move relative to the movable seat according to the bending condition of the drag chain cable, thereby further reducing the probability of concentrated damage to the position near the mounting component when the drag chain cable is bent.

[0020] Optionally, the mounting assembly further includes two clamping plates and multiple second elastic members; The clamping plate is movably mounted on the frame, and the two clamping plates are respectively located on both sides of the frame; the side of the clamping plate closest to the other clamping plate has multiple clearance grooves, and the two corresponding clearance grooves on the two clamping plates together form the mounting opening; the two ends of the second elastic member are respectively connected to the clamping plate and the frame, and it has the tendency to drive the clamping plate to move relative to the frame so that the size of the mounting opening is kept to a minimum, and the strength of the tendency is adjustable.

[0021] By adopting the above technical solution, users can easily adjust the clamping force of the clamping plate on the drag chain cable according to the required clamping degree, thereby reducing the probability of the drag chain cable being easily damaged due to excessive clamping force or failing due to insufficient clamping force; at the same time, it can facilitate the drag chain cable to move the clamping plate to expand the installation opening according to its own space requirements when bending, thereby reducing the probability of the drag chain cable being concentrated and severely damaged due to the limitations of the installation components.

[0022] Optionally, one end of the clamping plate near the other clamping plate is rotatably connected to the other clamping plate, and its rotation axis is parallel to the rotation axis of the main body.

[0023] By adopting the above technical solution, users can clamp and position the drag chain cable with both clamping plates tilted. When the drag chain cable bends, it can drive the two clamping plates to rotate relative to each other, expanding the installation opening to provide space for the drag chain cable to bend, and further reducing the probability of the drag chain cable being concentratedly damaged and severely damaged due to the limitations of the installation components.

[0024] Optionally, the mounting assembly further includes a third elastic element; The two ends of the third elastic element are respectively connected to the two clamping plates, and it has the tendency to drive the two clamping plates to rotate to a position parallel to each other, and the force of the third elastic element is less than the force of the second elastic element.

[0025] By adopting the above technical solution, the two clamping plates can rotate back to their original position as the drag chain cable straightens after the two clamping plates rotate relative to each other due to the bending of the drag chain cable, thereby effectively ensuring the clamping and positioning effect of the two clamping plates on the drag chain cable.

[0026] In summary, this application includes at least one of the following beneficial effects: 1. It can effectively reduce the impact of drag chain cable bending on the structure of the drag chain cable other than the protective structure, thereby effectively ensuring the normal electrical function of the drag chain cable and further extending the service life of the drag chain cable; 2. It allows users to easily adjust the protection structure and cable chain according to the bending condition of the cable chain during use, reducing the probability of concentrated damage to the cable chain; 3. It allows users to easily and promptly know the usage status of the protective structure, thereby facilitating timely maintenance and ensuring that the protective structure effectively provides protection. 4. During the use of drag chain cables, while ensuring their stability in clamping and positioning, it also provides more space for deformation during bending, reducing the probability of concentrated and severe damage to the drag chain cables due to the constraints of the drag chain. Attached Figure Description

[0027] Figure 1 This is a cross-sectional view of a durable drag chain cable for mechanical operations, as described in Embodiment 1. Figure 2 This is a cross-sectional view of a durable drag chain cable for mechanical operations in Embodiment 1 (a simplified representation of the drag chain cable structure excluding the protective structure). Figure 3 This is a schematic diagram of the structure of a cable chain in Embodiment 2; Figure 4 This is a partial structural schematic diagram of a cable chain according to Embodiment 2; Figure 5 This is a cross-sectional view of a drag chain in Embodiment 2 (a simplified representation of the drag chain cable structure excluding the protective structure). Figure 6 This is a cross-sectional view of a drag chain in Embodiment 2 (a simplified representation of the drag chain cable structure excluding the protective structure).

[0028] Explanation of reference numerals in the attached drawings: 1. Filler layer; 2. Core wire; 3. Wrapping layer; 4. Outer sheath layer; 5. Protective structure; 51. Protective layer; 52. Sealing assembly; 521. Seal; 5211. Air chamber; 522. Air valve; 523. Warning element; 6. Cable chain unit; 61. Main body; 62. Mounting assembly; 621. Movable seat; 622. Frame; 623. First elastic element; 624. Clamping plate; 6241. Movable plate; 6242. Rotating plate; 6243. Relief groove; 6244. Mounting port; 625. Second elastic element; 626. Third elastic element. Detailed Implementation

[0029] The following is in conjunction with the appendix Figure 1-6 This application will be described in further detail.

[0030] Example 1: This application discloses a durable drag chain cable for mechanical operations, which is used to maintain power supply during mechanical operations by bending and straightening as the machinery is operated.

[0031] Reference Figure 1 and Figure 2The drag chain cable includes a filler layer 1, a plurality of stranded cores 2 wound around the filler layer 1, a wrapping layer 3 covering the outer side of the stranded cores 2, an outer sheath layer 4 covering the outer side of the wrapping layer 3, and a protective structure 5 installed outside the outer sheath layer 4 for providing protection. Preferably, the filler layer 1 is a stranded aramid filler layer 1; preferably, the number of cores 2 is controlled between 3 and 60 cores, and preferably, each core 2 includes a conductor layer and an acrylic rubber insulation layer covering the conductor layer, wherein the cross-sectional area of ​​the conductor layer is 0.75-25 mm². 2 The conductor layer is made of several Class VI oxygen-free copper wires, copper foil wires and bulletproof wires concentrically twisted together to ensure the flexibility and bending resistance of the core 2 and the cable as a whole. The diameter of the Class VI oxygen-free copper wires, copper foil wires and bulletproof wires is less than 0.18mm to ensure the roundness and compactness of the conductor, which meets the requirements of Class VI conductors in the national standard GB / T3956-2008. The preferred wrapping layer 3 is a flame-retardant non-woven fabric wrapping layer 3. The preferred outer sheath layer 4 is an acrylic rubber outer sheath layer 4. Since the structure of the drag chain cable, except for the protective structure 5, is all existing technology in this field, it will not be described in detail here, and it is only briefly shown in the attached drawings.

[0032] The protective structure 5 includes a protective layer 51 and multiple sealing components 52.

[0033] The protective layer 51 is elastic and has an overall cylindrical shape, through which the structure of the drag chain cable, excluding the protective structure 5, passes, and it serves to protect the outer sheath 4. In this embodiment, the protective layer 51 is preferably also made of acrylic rubber.

[0034] The sealing assembly 52 is installed on the protective layer 51, and multiple sealing assemblies 52 are evenly distributed on the protective layer 51 along the extension direction of the protective layer 51.

[0035] The sealing assembly 52 includes a seal 521 for forming a sealed space after contacting the outer sheath 4, an air valve 522 for controlling the expansion and contraction of the seal 521, and a warning element 523 for alerting the user that there is an abnormality in the sealing assembly 52.

[0036] The seal 521 is elastic and has an overall annular structure. It is fixedly installed on the inner side of the protective layer 51, and its inner side is used to contact and abut against the outer side of the outer sheath 4. The inner side of the seal 521 has an air cavity 5211, and the expansion and contraction of the seal 521 can be controlled by inflating or deflating the air cavity 5211. In this embodiment, the seal 521 is preferably also made of acrylic rubber; and preferably, both the inner side of the seal 521 and the outer side of the outer sheath 4 are rough surfaces to improve the positional stability of the seal 521 relative to the outer sheath 4 after the inner side of the seal 521 contacts the outer sheath surface.

[0037] The air valve 522 is fixedly installed on the protective layer 51, passing through the protective layer 51 for installation. One end of the air valve is located inside the protective layer 51 and communicates with the air chamber 5211 of the corresponding sealing element 521. The other end of the air valve is located outside the protective layer 51, allowing the user to control the inflation or deflation of the sealing element 521 using tools. In this embodiment, the air valve 522 is preferably normally closed, meaning it maintains the sealing of the air chamber 5211 under normal circumstances. Since the air valve 522 with the above-mentioned functions is common prior art, it will not be described in detail here, and it is only briefly shown in the accompanying drawings.

[0038] The warning element 523 is detachably installed on the air valve 522. It is located at the end of the air valve 522 near the outer side of the protective layer 51. When the corresponding sealing element 521 fails to seal between the protective layer 51 and the outer layer 4, it can move outward relative to the air valve 522, making it convenient for the user to promptly detect and repair or replace the sealing component 52. In this embodiment, the warning element 523 is preferably a brightly colored balloon, and preferably, the warning element 523 is installed at the air inlet of the air valve 522 in a deflated state; during the process of the sealing element 521 inflating and expanding between the protective layer 51 and the outer layer 4 to achieve a sealing effect, the warning element 523 is not installed on the air valve 522; after the sealing element 521 has completed inflation and expansion and achieved a sealing effect, the warning element 523 is installed on the air valve 522; at this time, when the sealing element 521 abnormally contracts due to leakage from the air valve 522, the warning element 523 will bulge outwards, making it convenient for the user to observe and promptly troubleshoot the fault and repair or replace the sealing component 52; since the warning element 523 with the above functions is common prior art, it will not be described in detail here, and it is only briefly shown in the accompanying drawings.

[0039] The implementation principle of a durable drag chain cable for mechanical operations according to an embodiment of this application is as follows: During use, the user can selectively use multiple sealing components 52 according to the bending condition of the drag chain cable during mechanical operation, so that the sealing component 52 used can avoid the bending point of the drag chain cable, reducing the probability that the sealing component 52 will have a reduced service life or even fail to achieve an effective sealing effect due to being at the bending point.

[0040] After multiple sealing components 52 are put into use, a well-sealed space is formed between adjacent sealing elements 521 between the protective layer 51 and the outer sheath 4. At this time, when the bending point of the drag chain cable is located in the area of ​​the aforementioned space, the portion of the space located near the inner side of the outer sheath 4 after the drag chain cable bends is smaller than the portion located near the outer side of the outer sheath 4. As a result, the air pressure force on the portion of the drag chain cable structure (excluding the protective structure 5) near the outer side of the bend is greater than the air pressure force on the portion near the inner side of the bend. This can suppress the degree of bending, making the degree of bending of the drag chain cable structure (excluding the protective structure 5) less than the degree of bending of the protective layer 51. This effectively reduces the impact of drag chain cable bending on the normal electrical function of the cable, thereby further extending the service life of the drag chain cable.

[0041] Example 2, refer to Figure 3 and Figure 4 This application discloses a cable chain for mounting multiple durable cable chains for mechanical operations as described in Embodiment 1, which is used to carry multiple cable chains for bending or straightening during mechanical operations.

[0042] Reference Figure 4 and Figure 5 The cable chain includes multiple cable chain units 6 connected end to end and having a bending function, and the cable chain unit 6 includes a body 61 and an installation component 62 for positioning the cable chain cable.

[0043] The main body 61 has a rectangular frame structure, and its interior has a space for the drag chain cable to pass through and be installed and positioned along its length. Its two ends along its length are respectively rotatably connected to the adjacent main body 61, and its rotation axis is parallel to its own width direction.

[0044] Mounting assembly 62 is mounted on the main body 61 and is located between two rotatable connection positions of the main body 61. It includes a movable seat 621, a frame 622, a plurality of first elastic elements 623, two clamping plates 624, a plurality of second elastic elements 625 and a third elastic element 626.

[0045] The movable seat 621 is movably installed on the main body 61 in the form of a sleeve fitted outside the main body 61. Its direction of movement is parallel to the length direction of the main body 61, and its range of movement is located between the rotation axes at both ends of the main body 61. After the movable seat 621 is adjusted relative to the main body 61, it can be fixed relative to the main body 61, maintaining its current relative position. In this embodiment, the movable seat 621 is preferably positioned by multiple screws that engage with its threads and press against the main body 61, using the frictional force between the screws and the main body 61. Since the above positioning method is a common prior art, it will not be described in detail here, and its representation is omitted in the accompanying drawings.

[0046] The frame 622 has a rectangular frame structure and is movably installed on the inside of the movable seat 621 in a state perpendicular to the length direction of the main body 61, and its direction of movement is parallel to the direction of movement of the movable seat 621; the inside of the frame 622 has space for multiple drag chain cables to pass through, and the frame 622 has a certain distance limit during its movement relative to the movable seat 621.

[0047] Multiple first elastic elements 623 are respectively installed on both sides of the frame 622 along its direction of movement. The two ends of the first elastic elements 623 are fixedly connected to the frame 622 and the movable seat 621, respectively, and the multiple first elastic elements 623 on both sides have a common tendency to drive the frame 622 to be centered relative to the movable seat 621. In this embodiment, the first elastic element 623 is preferably a spring.

[0048] Reference Figure 5 and Figure 6 Two clamping plates 624 are respectively installed at both ends of the frame 622 in the width direction, and each includes a movable plate 6241 and a rotating plate 6242. Both the movable plate 6241 and the rotating plate 6242 are rectangular plate structures. One end of the movable plate 6241 in the width direction is movably connected to the frame 622, and its movement direction is parallel to its own width direction and parallel to the width direction of the frame 622. One end of the rotating plate 6242 in the width direction is rotatably connected to the end of the corresponding movable plate 6241 away from the frame 622, and the other end is rotatably connected to the end of the other rotating plate 6242 in the width direction, and its rotation axis is parallel to its own length direction. The rotating plate 6242 has multiple clearance grooves 6243 for drag chain cables to pass through on the side away from the corresponding movable plate 6241, and the clearance grooves 6243 between two corresponding rotating plates 6242 form mounting openings 6244 for drag chain cables to pass through and for clamping and positioning. In this embodiment, preferably, the side walls of the relief groove 6243 on the rotating plate 6242 along the length direction of the rotating plate 6242 are planes perpendicular to the length direction of the rotating plate 6242, and the side wall of the relief groove 6243 along the width direction of the rotating plate 6242 is an arc surface; and preferably, the clamping plate 624 is fixedly installed with an elastic layer for reducing the wear of the drag chain cable on the groove wall of the relief groove 6243 (the elastic layer is omitted in the figure).

[0049] Multiple second elastic elements 625 are respectively installed at both ends of the frame 622 in the width direction. The two ends of the second elastic elements 625 are fixedly connected to the frame 622 and the adjacent movable plate 6241, respectively, and have the tendency to drive the movable plate 6241 to move closer to another movable plate 6241. In this embodiment, the second elastic element 625 is preferably a compression spring.

[0050] Furthermore, to facilitate the clamping and positioning of the drag chain cable by the two clamping plates 624 with appropriate clamping force, it is preferable that the force exerted by the second elastic element 625 on the movable plate 6241 is adjustable. In this embodiment, it is preferable that the frame 622 is also equipped with a structure that drives the pressing block to move and press the multiple second elastic elements 625 by screws engaging with the threaded connection of the screws to the frame 622; since the structure with the above function is common prior art, it will not be described in detail here, and it is only briefly shown in the accompanying drawings.

[0051] The third elastic element 626 is installed at the rotational connection position between the two rotating plates 6242, with its two ends fixedly connected to the two rotating plates 6242 respectively, and it has a tendency to drive the two rotating plates 6242 to a position where they are parallel in the width direction. In this embodiment, the third elastic element 626 is preferably a torsion spring; and preferably, the force exerted by the second elastic element 625 on the movable plate 6241 is greater than the force exerted by the third elastic element 626 on the rotating plate 6242. That is, under normal circumstances, the two rotating plates 6242 will maintain a position in which their width direction is inclined and symmetrical relative to the length direction of the main body 61 under the force of the two movable plates 6241 driven by the second elastic element 625 and the force of the third elastic element 626. Since the torsion spring is a common prior art, it will not be described in detail here. The accompanying drawings only show its installation position and its structure is omitted.

[0052] The implementation principle of a drag chain in this application embodiment is as follows: During use, the user can adjust the position of the movable seat 621 on the main body 61 according to the bending of the drag chain cable during mechanical operation and the distribution of the sealing components 52 on the drag chain cable, and then adjust the force of the second elastic element 625 on the movable plate 6241 according to the clamping force required for the drag chain cable. After multiple cable carriers are installed on the cable carrier, they will pass through multiple mounting holes 6244 in sequence and be clamped and positioned by multiple clamping plates 624. At this time, the two rotating plates 6242 are mainly in an inclined position under the force of multiple second elastic elements 625 on the two movable plates 6241 to clamp and position the cable carriers. When the cable chain is bent, the two rotating plates 6242 in the rotating cable chain unit 6 are driven by the force of the cable chain to move the movable plate 6241 against the force of the second elastic element 625. This increases the size of the mounting opening 6244, providing sufficient bending space for the cable chain during bending and reducing damage caused by the clamping and positioning by the clamping plate 624 during bending. Furthermore, the frame 622 is moved relative to the movable seat 621 against the first elastic element 623 by the force of the cable chain, further reducing the space restriction of the mounting component 62 on the bending of the cable chain, thus facilitating bending and effectively reducing the probability of damage to the cable chain due to frequent bending. In addition, when the cable chain straightens, the mounting component 62 will return to its original position, stably clamping and positioning it.

[0053] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A durable drag chain cable for mechanical operations, comprising a filler layer (1), a plurality of conductors (2) twisted around the filler layer (1), a sheathing layer (3) covering the outside of the plurality of conductors (2), and an outer sheathing layer (4) covering the outside of the sheathing layer (3), characterized in that, It also includes a protective structure (5) covering the outside of the outer layer (4); The protective structure (5) includes a protective layer (51) and a plurality of sealing components (52); the protective layer (51) is sleeved on the outside of the outer layer (4), and the plurality of sealing components (52) are evenly distributed on the protective layer (51) along the length extension direction of the protective layer (51); The sealing assembly (52) includes a seal (521) disposed inside the protective layer (51) and used to form a seal between the protective layer (51) and the outer sheath (4).

2. The durable drag chain cable for mechanical operations according to claim 1, characterized in that, The seal (521) is elastic and has an air cavity (5211) inside.

3. A durable drag chain cable for mechanical operations according to claim 2, characterized in that, The sealing assembly (52) further includes an air valve (522); the air valve (522) is disposed on the protective layer (51), communicates with the air chamber (5211), and is used to control the expansion and contraction of the seal (521).

4. A durable drag chain cable for mechanical operations according to claim 3, characterized in that, The sealing assembly (52) also includes a warning element (523); The warning element (523) is movably mounted on the air valve (522), and the air chamber (5211) leaks during the process that the warning element (523) is driven to move outward.

5. A durable drag chain cable for mechanical operations according to claim 3, characterized in that, The outer sheath (4) has a rough surface, and the surface of the seal (521) that comes into contact with the outer sheath (4) is also rough.

6. A cable chain for mounting a durable cable chain for mechanical operations as described in any one of claims 1-5, characterized in that, Includes multiple cable chain units (6); The cable chain unit (6) includes a main body (61) and an installation component (62). The two ends of the main body (61) are respectively rotatably connected to the ends of the adjacent main body (61), and its rotation axis is perpendicular to its own length direction; The mounting assembly (62) is disposed inside the body (61) and has a plurality of mounting ports (6244) through which the drag chain cable passes for installation, and its position on the body (61) is adjustable along the length of the body (61).

7. A cable chain according to claim 6, characterized in that, The mounting assembly (62) includes a movable base (621), a frame (622), and a plurality of first elastic elements (623). The movable seat (621) is movably connected to the main body (61) along the length direction of the main body (61); the frame (622) is movably disposed on the movable seat (621), and its movement direction is parallel to the movement direction of the movable seat (621), and multiple mounting ports (6244) are located on the frame (622); multiple first elastic members (623) are respectively disposed on both sides of the frame (622), and the two ends of the first elastic members (623) are respectively connected to the movable seat (621) and the frame (622), and the multiple first elastic members (623) have a tendency to drive the frame (622) to be positioned relative to the movable seat (621).

8. A cable chain according to claim 7, characterized in that, The mounting assembly (62) also includes two clamping plates (624) and a plurality of second elastic elements (625); The clamping plate (624) is movably mounted on the frame (622), and the two clamping plates (624) are respectively located on both sides of the frame (622); the side of the clamping plate (624) closest to the other clamping plate (624) has a plurality of clearance grooves (6243), and the two corresponding clearance grooves (6243) on the two clamping plates (624) together form the mounting opening (6244); the two ends of the second elastic member (625) are respectively connected to the clamping plate (624) and the frame (622), and it has the tendency to drive the clamping plate (624) to move relative to the frame (622) so that the size of the mounting opening (6244) is kept to a minimum, and the strength of the tendency is adjustable.

9. A cable chain according to claim 8, characterized in that, The end of the clamping plate (624) near the other clamping plate (624) is rotatably connected to the other clamping plate (624), and its rotation axis is parallel to the rotation axis of the main body (61).

10. A cable chain according to claim 9, characterized in that, The mounting assembly (62) also includes a third elastic element (626); The two ends of the third elastic member (626) are respectively connected to the two clamping plates (624), and it has the tendency to drive the two clamping plates (624) to rotate to a position parallel to each other. The force of the third elastic member (626) is less than the force of the second elastic member (625).

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