Compression-resistant cable

Abstract

The invention relates to the technical field of cables, in particular to a compression-resistant cable, which comprises a sliding sleeve, a cable core and a cable core, the built-in cable core has a stretching distance in the inner cavity of the sliding sleeve; the number of the cage type parts is multiple, and the multiple cage type parts are sequentially arranged in the length direction of the outer surface of the sliding sleeve. The linkage design of the locking mechanism and the compaction part realizes gradient pressure adjustment from top to bottom aiming at a suspension scene, the top locking mechanism has the maximum load, the relative displacement of a guide strip plate and an inclined plane and the deformation of a compaction base are synchronously increased, the radial constraining force on an internal sliding sleeve is the strongest, and the radial constraining force is gradually reduced along with the reduction of the load from top to bottom; excessive deformation of the top end is avoided specifically. And meanwhile, the locking mechanisms are annularly arranged at intervals and are matched with the gap design of the supporting framework, so that the twisting force can be uniformly dispersed, and the anti-twisting stability in the cable laying and using process is improved.

Description

Technical Field

[0001] This invention relates to the field of cable technology, and more specifically to a pressure-resistant cable. Background Technology

[0002] Cables, as core components for power and signal transmission, are widely used in overhead and suspended applications. Existing suspended cables generally suffer from the following technical defects:

[0003] Uneven axial force distribution: When the cable is suspended from top to bottom, the force at the top is much greater than that at the bottom, which can easily lead to excessive tension at the top, conductor damage, or even cable breakage. Summary of the Invention

[0004] To solve the above-mentioned technical problems, the present invention proposes a pressure-resistant cable.

[0005] The technical solution of this invention is implemented as follows: a pressure-resistant cable, comprising:

[0006] Sliding sleeve;

[0007] An internal cable core has a tensile distance within the inner cavity of the sliding sleeve;

[0008] The cage-like part has multiple cage-like parts, and the multiple cage-like parts are arranged sequentially along the length direction of the outer surface of the sliding sleeve. The cage-like part includes two rubber sleeves, and multiple radially outwardly arched strip structures are arranged between the two rubber sleeves. An axial gap is reserved between the strip structures. The part also includes a locking mechanism arranged radially inside the axial gap.

[0009] A supporting frame includes opposing claw-shaped wrapping parts, a bridge plate is provided between the claws of the two claw-shaped wrapping parts, and a gap is reserved between the bridge plate and the two claw-shaped wrapping parts. The claw-shaped wrapping parts include a metal ring and a skeleton plate. There are multiple skeleton plates, which are equidistantly arranged on one side of the metal ring. A bridge plate is spaced between the skeleton plates. A tension opening is provided at the position of the skeleton plate, and a locking mechanism passes through two tension openings in the same direction.

[0010] The outer wrapping includes a release layer and a fixed tension layer, the release layer and the fixed tension layer are alternately arranged, the release layer is movably arranged on the outer arch portion, the fixed tension layer is arranged between the two outer arch portions, and the middle part of the fixed tension layer is fixed to the surface of the cage portion.

[0011] It also includes an end fixing mechanism, which is disposed at the end of the cable.

[0012] Furthermore, the release layer includes a fixed wrapping portion, and the inner wall of the fixed wrapping portion is provided with a following plate;

[0013] The fixed stretching layer includes a stretching portion, and a fixing collar fixed to the surface of the cage portion is provided in the middle of the inner wall of the stretching portion.

[0014] The stretching portion has an air pressure chamber that communicates with the inner cavity of the fixed wrapping portion.

[0015] The outer wrapping is designed in segments as a release layer and a fixed tension layer. The fixing collar is fixed to the surface of the cage part and to the inner wall of the tension part. In this way, the entire outer wrapping is intermittently fixed to the cage part and the supporting frame to form an intermediate layer. The structure between the two fixing collars and the intermediate layer are in a relatively movable state. The advantage of this setting is that...

[0016] Under axial tensile force, the outer layer has a stable and uniform stretching distance, so the outer layer has a uniform deformation area with intervals designed in the axial direction.

[0017] During the deformation process, the stretching part is in the stretching deformation area. The internal air pressure enters the fixed wrapping part from the stretching part. In this way, the fixed wrapping part can cause multiple following plates to expand radially inward and squeeze the support frame. This can release the deformation pressure inward and form an internal resistance effect during the deformation process through the support of the support frame. This effectively prevents the outer wrapping from being overstretched locally during deformation.

[0018] During the overall suspension of the cable, the deformation force is evenly distributed from top to bottom along the height direction of the entire cable. Compared with the existing cable design, the existing cable has the advantage of continuous force gradually decreasing from top to bottom, so the pressure increases as you go up, and the degree of damage increases exponentially.

[0019] Furthermore, the end fixing mechanism includes a fixing ring, which is sleeved on the fixing tension layer. The fixing ring has an annular notch, and both the fixing ring and the collar have multiple through holes. The strands in the fixing tension layer pass through the through holes on the fixing ring and are bent and inserted into the through holes of the collar. The collar is fixed in the annular notch.

[0020] When installing this cable, especially in suspended installations, it is generally fixed after being placed at a high position. Strict installation requirements are followed, employing a fixed outer layer wrapping method. The end fixing mechanism is fixed to external anchor points. The strands are secured using a collar and a fixing ring. This improves the joint's stability during suspension. The fixing ring has perforations for the strands to pass through. After the strand passes through these perforations, it is bent into the annular notch. It is important to note that the inner wall of the annular notch and the inside of the collar have combined holes for securing the strands. When bent into the inner wall of the annular notch, the inner wall of the strand fits against the hole on the inner wall of the annular notch. Then, the collar is fitted into the annular notch, and the hole on the annular notch combines with the hole on the collar to form the strand, thus firmly fixing it in place. This ensures that when the entire cable is suspended, the internal conductor portion of the connection will not bear the weight.

[0021] Furthermore, the strip structure includes two vertical rubber sections, a curved section is provided between the two vertical rubber sections, and a snap-fit ​​groove is provided at the connection between the curved section and the vertical rubber section.

[0022] The strip structure serves to form an integral part that wraps around the internal cable, together with the support frame. Both the vertical and curved sections are made of rubber. When the support frame is subjected to external pressure, the curved section can deform along with the support frame. In addition, the snap-fit ​​groove and the metal ring form an interlocking state, which ensures that the vertical and curved sections will not deform too much during stretching and closing, thus preventing wrinkles in the middle layer and delamination due to excessive axial stretching.

[0023] Furthermore, the locking mechanism includes an engagement strip that extends through the stretching opening, and the engagement strip includes two guide strips that are fixedly connected by an elastic strap. A guide head is fixedly connected to the other side of the guide strip, and a guide plate is provided on the guide head facing the sliding sleeve.

[0024] Furthermore, it also includes a compaction part, which is fixedly connected to one side of the rubber sleeve. The compaction part includes a compaction base, and the compaction base is provided with a flared groove matching the guide strip plate near the guide head. The flared groove gradually rises outward towards the guide strip to form an inclined surface.

[0025] The locking mechanism is located in the protective section, specifically between the two frame plates and the bridge plate, facing radially inward. The advantage of this arrangement is that under radial pressure, the two frame plates and the bridge plate form a bridge structure, positioned between two metal rings. These metal rings are made of metal, and the frame plates and bridge plates are also made of hard yet lightweight metal. This ensures that the locking mechanism remains intact and provides protection when trampling occurs.

[0026] When the locking mechanism is used, the fixed tension layer is designed to be easily deformable and stretchable. At this time, the distance between the two fixed tension layers will increase. When the distance increases, the two fixed tension layers are in a taut state. In this way, the two fixed tension layers can bind the cage part and the support frame when they are taut, thus preventing the internal cable from being in an extremely stretched state and thus preventing conductor damage.

[0027] In addition, the increased distance between the two rubber sleeves causes the compacted portions on both sides to move in opposite directions. As the flared groove moves from the guide plate, the inclined surface gradually approaches the inclined surface, causing the compaction base to move radially. This applies a radial force to the inner mesh of one end of the compaction base, which can restrain the internal cable portion to a certain extent, thus helping to alleviate tension and prevent abnormal tension in the internal cable.

[0028] Following the above explanation, it is important to note that since this cable is mostly used in suspended scenarios, a ring-shaped locking mechanism is employed. In such scenarios, the highest locking mechanism experiences the greatest tension due to gravity. Consequently, under the overall tensile effect, the relative displacement between the guide plate and the inclined surface of the uppermost locking mechanism increases, thus increasing the inward deformation of the compaction base. Consequently, the radial compressive force on the inner sleeve at the uppermost cable end increases. As the cable moves downwards towards the locking mechanism, the gravity on the cable gradually decreases, and its sliding distance decreases. Consequently, the pressure on the binding sleeve caused by the deformation of the compaction base gradually decreases from top to bottom. This prevents excessive cable deformation and also prevents damage to the upper cable when subjected to greater gravity.

[0029] Furthermore, when twisting occurs during cable suspension, the locking mechanism also has a large deformation distance, and it is spaced out in the circumferential direction, which has a better effect in resisting twisting. Moreover, the spaced-out support frame has the effect of evenly distributing the torsional force within the overall stress range, resulting in better quality assurance during cable laying.

[0030] Furthermore, the support frame also includes a fixed platform, on one axial side of which a wire mesh is fixedly connected to an inner nest, and a central sleeve is fixedly connected between the two fixed platforms. The two central sleeves are formed by woven metal mesh to create a hollow center.

[0031] By designing the support frame, metal rings are evenly spaced throughout the cable. These metal rings effectively resist external pressure and also serve as the fixing ends of the frame plates. When used with the bridge plate, they form an arch-shaped contact structure above and below the cable, arranged along the cable axis. This prevents excessive inward pressure under external stress. Furthermore, the two frame plates are positioned opposite each other with a gap between them and the bridge plate. This allows for some deformation when torsional forces occur. However, if the deformation is too large, the frame plates may partially contact the bridge plate, thus transmitting the torsional force to the rubber sleeves on both sides and the vertical rubber sections, achieving a uniform axial distribution of the torsional force.

[0032] In addition, the setting of the tension port provides space for the installation of the locking mechanism. When the guide head is displaced with the tension port, the outer side of the guide strip will have a radial displacement effect after contact. In combination with the use of the compaction base, the radial pressure can be increased, thereby ensuring that the force is distributed in the suspension state of the entire cable and also solving the problem of excessive pressure at the top.

[0033] The present invention has the following beneficial effects:

[0034] 1. Improved axial tensile uniformity, avoiding the risk of localized excessive damage: The outer layer adopts a segmented design with alternating release layers and fixed tension layers, and intermittent fixation is achieved through fixing collars, allowing the outer layer structure and the middle layer to form a "interval movement" cooperation. Under stress, it can form an axially uniformly distributed deformation area. At the same time, with the help of the pressure transmission between the air chamber of the tension section and the release layer, it pushes the radial extrusion support skeleton of the following plate to form internal resistance, completely solving the problem of localized stress concentration and geometrical increase of top pressure when the axial tension of traditional cables is applied, effectively protecting the outer layer and the inner conductor.

[0035] 2. The linkage design of the locking mechanism and the compaction section enables top-down gradient pressure adjustment for suspended applications. The top locking mechanism, bearing the greatest load, experiences a simultaneous increase in the relative displacement between the guide plate and the inclined surface, as well as the deformation of the compaction base, resulting in the strongest radial constraint force on the internal sliding sleeve. This force gradually decreases from top to bottom as the load decreases, specifically preventing excessive deformation at the top. Simultaneously, the annular spacing of the locking mechanism, combined with the gap design of the support frame, evenly distributes torsional forces, improving the anti-torsional stability during cable laying and use.

[0036] 3. The interlocking structure of the arched bridge supporting the frame and the cage-like strip structure effectively resists external pressure impacts and limits wrinkling and delamination in the middle layer structure; the hollowed-out woven metal mesh design in the middle reduces weight while improving pressure dispersion. The end fixing mechanism achieves a firm fixation at the joint through strand bending and embedding and combined hole clamping design, completely isolating the internal conductor from the risk of load. All components work together to form an integrated "protection-limiting-buffering" system, significantly improving the structural stability of the cable in complex mechanical environments and extending its service life. Attached Figure Description

[0037] Figure 1 This is a cross-sectional view of the present invention;

[0038] Figure 2 This is a perspective view of the present invention;

[0039] Figure 3 This is a partial cross-sectional view of the present invention;

[0040] Figure 4 This is a schematic diagram of the strip structure in this invention;

[0041] Figure 5 This is a schematic diagram of the locking mechanism of the present invention;

[0042] Figure 6 This is a schematic diagram of the support frame of the present invention;

[0043] Figure 7 This is a schematic diagram of the central sleeve and metal mesh of the present invention;

[0044] Figure 8 This is a partial cross-sectional view of the present invention.

[0045] In the picture

[0046] 1. Outer wrapping; 11. Release layer; 111. Fixed wrapping part; 112. Following plate; 12. Fixed tension layer; 121. Tensioning part; 122. Fixed collar; 13. End fixing mechanism; 131. Fixed ring; 132. Annular notch; 133. Collar; 134. Perforation; 135. Strand; 2. Sliding sleeve; 3. Internal cable core; 4. Cage part; 41. Rubber sleeve; 42. Vertical rubber part; 43. Bending part; 44. Clip 45. Anterior groove; 46. Axial clearance; 47. Engaging strip; 48. Elastic band; 49. Guide strip; 40. Guide head; 41. Guide strip plate; 42. Compacted part; 43. Compacted base; 44. Flared groove; 45. Inclined surface; 6. Support frame; 76. Metal ring; 8. Tensioning opening; 9. Annular groove; 10. Fixed platform; 11. Frame plate; 12. Bridge plate; 13. Wire mesh nesting; 14. Middle sleeve; 15. Metal mesh. Detailed Implementation

[0047] The technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0048] Reference Figures 1 to 8 As shown, the present invention provides a pressure-resistant cable, comprising:

[0049] Sliding sleeve 2 allows the built-in cable core 3 to move within the sliding sleeve 2;

[0050] Built-in cable core 3, which has a tension distance in the inner cavity of the sliding sleeve 2;

[0051] The outer wrapping 1 includes a release layer 11 and a fixed tension layer 12. The release layer 11 and the fixed tension layer 12 are alternately arranged. The release layer 11 is movably arranged in the outer arch portion, and the fixed tension layer 12 is arranged between the two outer arch portions. The middle part of the fixed tension layer 12 is fixed to the surface of the cage portion 4.

[0052] It also includes an end fixing mechanism 13, which is disposed at the end of the cable.

[0053] Furthermore, the release layer 11 includes a fixed wrapping portion 111, and a following plate 112 is provided on the inner wall of the fixed wrapping portion 111;

[0054] The fixed stretching layer 12 includes a stretching portion 121, and a fixing collar 122 fixed to the surface of the cage portion 4 is provided in the middle of the inner wall of the stretching portion 121.

[0055] The stretching portion 121 has a pneumatic chamber that communicates with the inner cavity of the fixed wrapping portion 111.

[0056] The outer wrapping 1 is designed in segments as a release layer 11 and a fixed tension layer 12. The fixing collar 122 is fixed to the surface of the cage part 4 and to the inner wall of the tension part 121. In this way, the entire outer wrapping 1 is intermittently fixed to the cage part 4 and the supporting frame 5 to form an intermediate layer. The structure between the two fixing collars 122 is in a relatively movable state with respect to the intermediate layer. The advantage of this setting is that...

[0057] Under axial tensile force, the outer wrapping 1 has a stable and uniform stretching distance effect, so that the outer wrapping 1 has a uniform deformation area with interval design in the axial direction.

[0058] During the deformation process, the stretching part 121 is in the stretching deformation area, and the internal air pressure enters from the stretching part 121 into the fixed wrapping part 111. In this way, the fixed wrapping part 111 can cause multiple following plates 112 to expand radially inward and squeeze the support frame 5. This can release the deformation pressure inward and form an internal resistance effect during the deformation process through the support of the support frame 5, effectively preventing the outer outer wrapping 1 from being overstretched locally during deformation.

[0059] During the overall suspension of the cable, the deformation force is evenly distributed from top to bottom along the height direction of the entire cable. Compared with the existing cable design, the existing cable has the advantage of continuous force gradually decreasing from top to bottom, so the pressure increases as you go up, and the degree of damage increases exponentially.

[0060] Furthermore, the end fixing mechanism 13 includes a fixing ring 131, which is sleeved on the fixing tension layer 12. The fixing ring 131 has an annular notch 132. Both the fixing ring 131 and the collar 133 have multiple through holes 134. The strands 135 in the fixing tension layer 12 pass through the through holes 134 on the fixing ring 131 and are bent and inserted into the through holes 134 of the collar 133. The collar 133 is fixed in the annular notch 132.

[0061] When installing this cable, especially in a suspended installation, it is generally fixed after being placed at a high position. During installation, strict requirements are followed. The outer layer is fixed using a method of securing the outer layer 1, and the end fixing mechanism 13 is fixed to the external anchor point. The strands 135 are fixed using a collar 133 and a fixing ring 131. This improves the joint's stability during suspension. Furthermore, the fixing ring 131 has a through hole 134 for the strands 135 to pass through. After the strands 135 pass through the through hole 134, they are bent into the annular notch 1. At position 32, it is important to note that the inner wall of the annular notch 132 and the inside of the collar 133 have combination holes for securing the strand 135. When bent into the inner wall of the annular notch 132, the inner wall of the strand 135 fits into the hole on the inner wall of the annular notch 132. Then, after the collar 133 is put into the annular notch 132, the hole on the annular notch 132 and the hole on the collar 133 combine to form the strand 135, thus firmly fixing the strand 135. This ensures that when subjected to the suspended weight of the entire cable, the internal conductor part will not bear the weight at the connection.

[0062] The cage-type part 4 has multiple cage-type parts 4, and the multiple cage-type parts 4 are arranged sequentially along the outer length direction of the sliding sleeve 2. The cage-type part 4 includes two rubber sleeves 41, and multiple radially outwardly arched strip structures are arranged between the two rubber sleeves 41, and an axial gap 45 is reserved between the strip structures. It also includes a locking mechanism arranged on the radially inner side of the axial gap 45.

[0063] Furthermore, the strip structure includes two vertical rubber portions 42, a curved portion 43 is provided between the two vertical rubber portions 42, and a snap-fit ​​groove 44 is provided at the connection between the curved portion 43 and the vertical rubber portion 42, which is adapted to the two protruding positions forming the annular groove 53.

[0064] The function of the strip structure is to form an integral part that wraps the internal cable with the support frame 5. The vertical rubber part 42 and the curved part 43 are both made of rubber. When the support frame 5 is subjected to external pressure, the curved part 43 can change with the deformation of the support frame 5. In addition, the snap-fit ​​groove 44 and the metal ring 51 are engaged, specifically with the protrusion after the annular groove 53 is formed. This ensures that when stretched and brought together, the vertical rubber part 42 and the curved part 43 will not undergo too much deformation, causing wrinkles in the middle layer, and will not cause delamination due to excessive axial stretching deformation.

[0065] Furthermore, the locking mechanism includes an engagement bar 46, which is disposed through the extension opening 52. The engagement bar 46 includes two guide bars 462, which are fixedly connected by an elastic strap 461. A guide head 463 is fixedly connected to the other side of the guide bar 462, and a guide plate 464 is provided on the guide head 463 facing the sliding sleeve 2.

[0066] Furthermore, it also includes a compaction part 47, which is fixedly connected to one side of the rubber sleeve 41. The compaction part 47 includes a compaction base 471. The compaction base 471 is provided with a flared groove 472 that matches the guide strip 464 near the guide head 463. The flared groove 472 gradually rises outward toward the guide strip 462 to form an inclined surface 473.

[0067] When the locking mechanism is used, since the fixed tension layer 12 is designed to be easily deformable and stretchable, the distance between the two fixed tension layers 12 will increase. When the distance increases, the two fixed tension layers 12 will be in a taut state. In this way, the two fixed tension layers 12 can bind the cage part 4 and the support frame 5 when they are taut, thus preventing the internal cable from being in an extremely stretched state and thus preventing the conductor from being damaged.

[0068] The locking mechanism is located in the protective section, specifically between the two frame plates 55 and the bridge plate 56, facing radially inward. The advantage of this arrangement is that, under radial pressure, the two frame plates 55 and the bridge plate 56 form a bridge structure, located between the two metal rings 51. The metal rings 51 are made of metal, and the frame plates 55 and the bridge plate 56 are also made of hard and lightweight metal. In this way, when trampling occurs, the locking mechanism can remain intact and achieve the purpose of protection.

[0069] In addition, the increased distance between the two rubber sleeves 41 causes the compacted portions 47 on both sides to move in opposite directions. As a result, when the flared groove 472 moves from the guide plate 464, the inclined surface 473 gradually approaches the inclined surface 473, thereby causing the compacted base 471 to move radially. This applies a radial force to one end of the compacted base 471 on the inner mesh nest 57, which can restrain the internal cable portion to a certain extent and is beneficial in relieving tension and preventing abnormal tension in the internal cable.

[0070] It is important to note that since this cable is mostly used in suspended scenarios, a ring-shaped locking mechanism is used. The highest locking mechanism experiences the greatest tension due to gravity. Consequently, under the overall tension, the relative displacement between the guide plate 464 and the inclined surface 473 of the uppermost locking mechanism increases, thus increasing the inward deformation of the compaction base 471. Consequently, the radial compressive force on the inner sleeve 2 at the uppermost cable end increases. As the cable moves downwards towards the locking mechanism, the gravity on the cable gradually decreases, and its sliding distance decreases. Thus, the pressure on the binding sleeve 2 caused by the deformation of the compaction base 471 gradually decreases from top to bottom. This prevents excessive cable deformation and also prevents damage to the upper cable when subjected to greater gravity.

[0071] Furthermore, when twisting occurs during cable suspension, the locking mechanism also has a large deformation distance, and it is spaced out in the circumferential direction, which has a better effect in resisting twisting. Moreover, the spaced-out support frame 5 has the effect of evenly distributing the torsional force within the overall force range, thus ensuring better quality during cable laying.

[0072] The support frame 5 includes opposing claw-shaped wrapping parts. A bridge plate 56 is provided between the claws of the two claw-shaped wrapping parts, and a gap is reserved between the bridge plate 56 and the two claw-shaped wrapping parts. The claw-shaped wrapping parts include a metal ring 51 and a skeleton plate 55. There are multiple skeleton plates 55, which are equally spaced on one side of the metal ring 51. The bridge plate 56 is spaced between the skeleton plates 55 and is located on the metal ring 51. A tension opening 52 is provided at the position of the skeleton plate 55, and the locking mechanism passes through the two tension openings 52 in the same direction.

[0073] Furthermore, the support frame 5 also includes a fixed platform 54, on one axial side of the fixed platform 54 is a wire mesh inner nest 57, and a middle sleeve 58 is fixedly connected between the two fixed platforms 54. The two middle sleeves 58 are hollowed out in the middle by woven metal mesh 59.

[0074] By setting the support frame 5, the metal rings 51 are evenly spaced throughout the cable. The metal rings 51 can effectively resist external pressure and also serve as the fixing ends of the frame plate 55. When used with the bridge plate 56, they can form an arch-shaped contact structure above and below the cable. The arch-shaped contact structure is set along the cable axis, which can prevent excessive inward pressure under external pressure. In addition, the two frame plates 55 are set opposite each other and there is a gap between them and the bridge plate 56. This can play a certain role in deformation when torsional force occurs. However, when the deformation is too large, the frame plate 55 and the bridge plate 56 will also come into partial contact. This allows the torsional force to be transmitted to the rubber sleeves 41 on both sides and the vertical rubber part 42, so that the torsional force is evenly distributed in the axial direction.

[0075] In addition, the setting of the tension port 52 provides space for the installation of the locking mechanism. When the guide head 463 moves with the tension port 52, the outer side of the guide bar 462 will have a radial displacement effect after contacting it. In conjunction with the use of the compaction base 471, the radial pressure can be increased, thereby ensuring that the force is distributed in the suspension state of the entire cable, which can also solve the problem of excessive pressure at the top.

[0076] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A pressure-resistant cable, characterized in that, include: Sliding sleeve (2); Built-in cable core (3), the built-in cable core (3) has a tensile distance in the inner cavity of the sliding sleeve (2); The cage-like part (4) has multiple cage-like parts (4) arranged sequentially along the outer length direction of the sliding sleeve (2). The cage-like part (4) includes two rubber sleeves (41), and multiple radially outwardly arched strip structures are provided between the two rubber sleeves (41). An axial gap (45) is reserved between the strip structures. The cage-like part (4) also includes a locking mechanism provided on the radially inner side of the axial gap (45). A support frame (5) includes opposing claw-shaped wrapping parts. A bridge plate (56) is provided between the claws of the two claw-shaped wrapping parts, and a gap is reserved between the bridge plate (56) and the two claw-shaped wrapping parts. The claw-shaped wrapping parts include a metal ring (51) and a skeleton plate (55). There are multiple skeleton plates (55), which are equidistantly arranged on one side of the metal ring (51). A bridge plate (56) is spaced between the skeleton plates (55) and is located on the metal ring (51). A tension opening (52) is provided at the position of the skeleton plate (55), and a locking mechanism passes through the two tension openings (52) in the same direction. The outer wrapping (1) includes a release layer (11) and a fixed tension layer (12). The release layer (11) and the fixed tension layer (12) are alternately arranged, and the release layer (11) is movably arranged in the outer arch portion. The fixed tension layer (12) is arranged between the two outer arch portions, and the middle part of the fixed tension layer (12) is fixed to the surface of the cage portion (4). It also includes an end fixing mechanism (13), which is disposed at the end of the cable.

2. The pressure-resistant cable according to claim 1, characterized in that, The release layer (11) includes a fixed wrapping part (111), and the inner wall of the fixed wrapping part (111) is provided with a following plate (112). The fixed stretching layer (12) includes a stretching portion (121), and a fixing collar (122) fixed to the surface of the cage portion (4) is provided in the middle of the inner wall of the stretching portion (121). The stretching portion (121) has a pneumatic cavity that communicates with the inner cavity of the fixed wrapping portion (111).

3. The pressure-resistant cable according to claim 1, characterized in that, The end fixing mechanism (13) includes a fixing ring (131), which is sleeved on the fixing tension layer (12). The fixing ring (131) has an annular notch (132). Both the fixing ring (131) and the collar (133) have multiple through holes (134). The strands (135) in the fixing tension layer (12) pass through the through holes (134) on the fixing ring (131) and are bent and inserted into the through holes (134) of the collar (133). The collar (133) is fixed in the annular notch (132).

4. A pressure-resistant cable according to claim 3, characterized in that, The strip structure includes two vertical rubber parts (42), a curved part (43) is provided between the two vertical rubber parts (42), and a snap-fit ​​groove (44) is provided at the connection between the curved part (43) and the vertical rubber part (42).

5. A pressure-resistant cable according to claim 4, characterized in that, The locking mechanism includes an engagement bar (46), which is disposed through the stretching opening (52). The engagement bar (46) includes two guide bars (462), which are fixedly connected to each other by an elastic strap (461). A guide head (463) is fixedly connected to the other side of the guide bar (462). A guide plate (464) is provided on the guide head (463) facing the sliding sleeve (2).

6. A pressure-resistant cable according to claim 5, characterized in that, It also includes a compaction part (47), which is fixedly connected to one side of the rubber sleeve (41). The compaction part (47) includes a compaction base (471). The compaction base (471) is provided with a flared groove (472) that matches the guide strip plate (464) near the guide head (463). The flared groove (472) gradually rises outward toward the guide strip (462) to form an inclined surface (473).

7. A pressure-resistant cable according to claim 6, characterized in that, The supporting frame (5) also includes a fixed platform (54), on one axial side of the fixed platform (54) is a wire mesh inner nest (57), and a middle sleeve (58) is fixedly connected between the two fixed platforms (54). The two middle sleeves (58) form a hollow shape in the middle through a woven metal mesh (59).

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