Flexible cable sleeve capable of telescopically adjusting length

Abstract

The invention relates to the technical field of cable devices, and discloses a flexible cable sleeve capable of telescopically adjusting the length, which comprises a cable body, an inner elastic shielding lining and an elastic inner protective sleeve are sequentially sleeved outside the cable body, and a sleeve telescopic mechanism is arranged and consists of a sleeve telescopic assembly and a sleeve inner telescopic assembly, a sleeve auxiliary telescopic mechanism is further arranged on the surface of the sleeve telescopic assembly, the sleeve telescopic assembly can achieve telescopic of a telescopic part by adjusting an adjusting nut, installation and maintenance are easy and convenient, thermal deformation and mechanical vibration can be absorbed, the service life is prolonged, and safety is improved. The cable is protected, different wiring scenes are adapted, the sleeve auxiliary telescoping mechanism uses a limiting sleeve for limiting, a telescoping part node protection ring, an elastic connecting piece and an outer protection ring are matched, a sleeve node is protected, the weight is reduced, corrosion resistance and wear resistance are achieved, the elastic connecting piece is made of ethylene propylene diene monomer, and stable operation of the device is guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of cable devices, and particularly to a flexible cable sleeve with adjustable telescopic length. Background Art

[0002] A cable sleeve, also known as a protective pipe or conduit, is a pipe used to protect the wiring of electric wires and cables in electrical installations, allowing the insertion and replacement of electric wires and cables. The cable sleeve is a new type of sleeve material widely used in power engineering. With the rapid development of the project of burying power cables underground, higher requirements are put forward for cable sleeves. Cable sleeves are applicable to fields such as telecommunications, power engineering, transportation, and urban construction.

[0003] The installation process of existing cable sleeves may be relatively complex, requiring more professional tools or complex steps. Existing cable sleeves are insufficient in absorbing thermal deformation and mechanical vibration, easily leading to stress concentration and fatigue damage, thereby affecting the service life and safety of the sleeves. At the same time, during the telescopic process of existing cable sleeves, they may not effectively protect the cable body, inner elastic shielding lining, and elastic inner protective sleeve, and have poor adaptability in different wiring scenarios.

[0004] Therefore, it is necessary to design a flexible cable sleeve with adjustable telescopic length, strong practicability, and good protection effect on cables. Summary of the Invention

[0005] The purpose of the present invention is to provide a flexible cable sleeve with adjustable telescopic length to solve the problems raised in the above background art.

[0006] To solve the above technical problems, the present invention provides the following technical solution: A flexible cable sleeve with adjustable telescopic length, including a cable body, an inner elastic shielding lining is sleeved on the surface of the cable body, an elastic inner protective sleeve is sleeved on the outer end of the inner elastic shielding lining, a sleeve telescopic mechanism is arranged at the outer end of the cable body, the sleeve telescopic mechanism includes a sleeve telescopic component and a sleeve inner telescopic component, and a sleeve auxiliary telescopic mechanism is arranged on the surface of the sleeve telescopic component; The casing telescopic assembly includes a main casing, which is arranged in the middle section of the surface of the cable body. Telescopic parts are fixedly connected to both the front and rear ends of the main casing. A connecting flange I is fixedly connected to the outer end of the telescopic part. A sealing ring is installed inside the connecting flange I. A connecting seat is fixedly connected to the surface of the connecting flange I. An adjusting rod is inserted into the connecting seat. Adjusting nuts are installed at both the front and rear ends of the surface of the adjusting rod. A connecting flange II is installed at the outer end of the connecting flange I. An extending casing telescopic part is installed at the outer end of the connecting flange II. An extending casing elastic inner tube is fixedly connected inside the extending casing telescopic part. The casing telescopic assembly can be adjusted by adjusting the position of the adjusting nuts on the adjusting rod. The telescopic part can be telescoped through manual adjustment. As a whole, it has the advantages of simple installation and convenient maintenance. Only need to install the expander on the casing and adjust the tightening degree of the adjusting nuts to complete the installation. When maintenance or component replacement is required, only need to loosen the adjusting nuts to facilitate maintenance and replacement, reducing the maintenance time and cost. During use, this assembly can effectively absorb the thermal deformation and mechanical vibration generated during the telescoping of the casing, reduce the stress concentration and fatigue damage of the casing, and improve the service life and safety of the casing.

[0007] According to the above technical solution, four groups of connecting seats are fixedly connected to the surface of the connecting flange I. The sealing ring is installed at the connection between the connecting flange I and the telescopic part. A sealing ring is installed at the connection between the connecting flange II and the connecting flange I.

[0008] According to the above technical solution, the cable body, the inner elastic shielding lining and the elastic inner protective sleeve all penetrate through the inside of the casing telescopic assembly.

[0009] According to the above technical solution, the telescopic component inside the casing includes a connecting part, which is fixedly connected to the outer end of the second connecting flange. An internal metal ring is fixedly connected inside the elastic inner tube of the extending casing. One end of an elastic connecting piece I is fixedly connected to the inner end of the internal metal ring, and an elastic connecting piece II is fixedly connected to the surface of the internal metal ring. When the casing expands and contracts, the telescopic part and the elastic inner tube of the extending casing will expand and contract. At this time, the fixed internal metal ring inside the elastic inner tube of the extending casing will move accordingly. As the telescopic part and the elastic inner tube of the extending casing move, the intervals between multiple internal metal rings will change, thereby improving the protection for the cable body, the inner elastic shielding lining, and the elastic inner protective sleeve. Through the arrangement of the elastic connecting piece I and the elastic connecting piece II, the adaptability of the telescopic component inside the casing can be improved, and it can adapt to the length of the casing after elongation. On the contrary, when the casing contracts, the fixing frame will move closer accordingly, always maintaining effective fixation of the cable. The internal metal ring and the elastic connecting piece I are symmetrically distributed on the inner wall of the casing to ensure uniform fixing force on the cable. Through the setting of this component, the protection for the cable can be effectively improved during the expansion and contraction of the casing, adapting to different wiring scenarios, and at the same time having good durability, insulation, and convenient installation and operation performance.

[0010] According to the above technical solution, one end of the elastic connecting piece I away from the internal metal ring is fixedly connected to the surface of the elastic inner protective sleeve, and the internal metal rings are connected together through the elastic connecting piece II.

[0011] According to the above technical solution, the auxiliary telescopic mechanism of the casing includes a fixed seat, which is fixedly connected to one end of the elastic inner tube of the extending casing close to the second connecting flange. External threads are provided on the surface of the fixed seat, and a limit sleeve is installed on the surface of the fixed seat. Internal threads are provided inside the limit sleeve. A telescopic part node protection ring is fixedly connected to the surface of the telescopic part of the extending casing. An elastic connecting piece III is fixedly connected to the surface of the telescopic part node protection ring, and an outer protection ring is fixedly connected to the outer end of the elastic connecting piece III. The setting of the limit sleeve can limit the telescopic part and the elastic inner tube of the extending casing when the casing does not need to be telescoped. When the casing needs to be telescoped, only loosening is required to achieve telescoping, which is simple and fast as a whole. At the same time, the telescopic part node protection ring, the elastic connecting piece III, and the outer protection ring protect the node part of the telescopic part of the extending casing. It can not only ensure the close fit of the telescopic part and the elastic inner tube of the extending casing, but also play a buffering role when subjected to external force impact, protecting the cable casing from damage. It is made of high-strength aluminum alloy material, which has the advantages of light weight, high strength, and corrosion resistance, can effectively reduce the overall weight, and at the same time resist physical damages such as external collisions and scratches. Its surface is treated by anodic oxidation to further enhance corrosion resistance and wear resistance.

[0012] According to the above technical solution, the fixed seat and the limit sleeve are connected by external threads and the limit sleeve threads, and the outer protective ring is fixedly connected to one end of the elastic connector three away from the telescopic part node protective ring.

[0013] According to the above technical solution, the elastic connector three, the elastic connector one, and the elastic connector two are all made of ethylene propylene diene monomer rubber.

[0014] Compared with the prior art, the beneficial effects achieved by the present invention are as follows: 1. In the present invention, by providing a casing telescopic assembly, the casing telescopic assembly can be adjusted by adjusting the position of the adjusting nut on the adjusting rod, and the telescopic part can be telescoped manually. The whole has the advantages of simple installation and convenient maintenance. Only need to install the expander on the casing and adjust the tightening degree of the adjusting nut to complete the installation. When maintenance or component replacement is required, only need to loosen the adjusting nut to facilitate maintenance and replacement, reducing maintenance time and cost. During use, this assembly can effectively absorb the thermal deformation and mechanical vibration generated during the telescoping of the casing, reduce the stress concentration and fatigue damage of the casing, and improve the service life and safety of the casing.

[0015] 2. In the present invention, by providing a telescopic assembly inside the casing, when the casing is telescoped, the extended casing telescopic part and the extended casing elastic inner tube will be telescoped. At this time, the fixed built-in metal ring inside the extended casing elastic inner tube will move accordingly. As the extended casing telescopic part and the extended casing elastic inner tube move, the interval between multiple built-in metal rings is changed, thereby improving the protection for the cable body, the inner elastic shielding lining, and the elastic inner protective sleeve. The adaptability of the telescopic assembly inside the casing can be improved through the setting of the elastic connector one and the elastic connector two, and it can adapt to the length of the casing after elongation. On the contrary, when the casing shrinks, the fixed frame moves closer accordingly, always maintaining effective fixation of the cable. The built-in metal ring and the elastic connector one are symmetrically distributed on the inner wall of the casing to ensure uniform fixing force for the cable. Through the setting of this assembly, the protection for the cable can be effectively improved during the telescoping of the casing, adapting to different wiring scenarios, and at the same time having good durability, insulation, and convenient installation and operation performance.

[0016] 3. In the present invention, by providing a sleeve auxiliary telescopic mechanism, the setting of the limit sleeve can limit the telescopic part of the extension sleeve and the elastic inner tube of the extension sleeve when the sleeve does not need to be telescoped. When the sleeve needs to be telescoped, it only needs to be loosened to achieve telescoping. The overall operation is simple and fast. At the same time, the telescopic part node protection ring, elastic connecting piece three and outer protection ring protect the node part of the telescopic part of the extension sleeve, which can not only ensure the close fit of the telescopic part of the extension sleeve and the elastic inner tube of the extension sleeve, but also play a buffering role when subjected to external force impact, protecting the cable sleeve from damage. It is made of high-strength aluminum alloy material, which has the advantages of light weight, high strength, corrosion resistance, etc. It can effectively reduce the overall weight and resist external physical damages such as collision and scratching at the same time. Its surface is treated by anodic oxidation to further enhance the corrosion resistance and wear resistance.

[0017] 4. In the present invention, by providing elastic connecting piece one, elastic connecting piece two and elastic connecting piece three, elastic connecting piece one, elastic connecting piece two and elastic connecting piece three are all made of ethylene propylene diene monomer rubber. This material is famous for its excellent aging resistance, ozone resistance and chemical corrosion resistance, and is very suitable for use in complex and changeable environments, thus ensuring the long-term stable operation of the entire protection device. It is a slender strip, with a width of about - millimeters and a thickness of - millimeters. Such a dimension design enables it to have sufficient flexibility while having a certain strength, and can adapt to various stress changes generated when the cable sleeve telescopes. When the cable sleeve telescopes, due to the existence of elastic connecting piece one and elastic connecting piece two, the built-in metal ring can move and deform flexibly, which can ensure that the built-in metal ring is always evenly distributed inside, continuously providing stable support for the entire protection device, effectively dispersing the external pressure that may act on the cable, and preventing the cable from being damaged due to excessive local pressure. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings are used to provide further understanding of the present invention, and constitute a part of the specification. They are used together with the embodiments of the present invention to explain the present invention, and do not constitute a limitation to the present invention. In the drawings: Figure 1 is the overall schematic diagram of the present invention; Figure 2 is the separated view schematic diagram of the sleeve telescopic assembly of the present invention; Figure 3 is the schematic diagram of the sleeve telescopic assembly of the present invention; Figure 4 is the separated view schematic diagram of the inner telescopic assembly of the sleeve of the present invention; Figure 5 is the schematic diagram of the inner telescopic assembly of the sleeve of the present invention; Figure 6 is the schematic diagram of the sleeve auxiliary telescopic mechanism of the present invention; Figure 7 It is a schematic diagram of the cable body of the present invention.

[0019] In the figure: 1. Cable body; 2. Inner elastic shielding lining; 3. Elastic inner protective sleeve; 4. Sleeve telescopic mechanism; 41. Sleeve telescopic component; 411. Main sleeve; 412. Telescopic part; 413. Connecting flange one; 414. Sealing ring; 415. Connecting seat; 416. Adjusting rod; 417. Adjusting nut; 418. Connecting flange two; 419. Extended sleeve telescopic part; 4101. Extended sleeve elastic inner tube; 42. Inner sleeve telescopic component; 421. Connecting part; 422. Built-in metal ring; 423. Elastic connecting piece one; 424. Elastic connecting piece two; 5. Sleeve auxiliary telescopic mechanism; 51. Fixed seat; 52. External thread; 53. Limit sleeve; 54. Internal thread; 55. Telescopic part node protection ring; 56. Elastic connecting piece three; 57. Outer protection ring. Specific embodiments

[0020] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0021] The present invention provides the following technical solutions: Embodiment 1

[0022] Please refer to Figures 1-7 , the present invention provides a technical solution: a flexible cable sleeve with adjustable telescopic length, including a cable body 1, an inner elastic shielding lining 2 is sleeved on the surface of the cable body 1, an elastic inner protective sleeve 3 is sleeved on the outer end of the inner elastic shielding lining 2, a sleeve telescopic mechanism 4 is arranged at the outer end of the cable body 1, the sleeve telescopic mechanism 4 includes a sleeve telescopic component 41 and an inner sleeve telescopic component 42, and a sleeve auxiliary telescopic mechanism 5 is arranged on the surface of the sleeve telescopic component 41; The sleeve telescopic assembly 41 includes a main sleeve 411 which is arranged in the middle section of the surface of the cable body 1. Both the front and rear ends of the main sleeve 411 are fixedly connected with telescopic parts 412. The outer ends of the telescopic parts 412 are fixedly connected with a first connecting flange 413. A sealing ring 414 is installed inside the first connecting flange 413. A connecting seat 415 is fixedly connected to the surface of the first connecting flange 413. An adjusting rod 416 is inserted into the connecting seat 415. Adjusting nuts 417 are installed at both the front and rear ends of the surface of the adjusting rod 416. A second connecting flange 418 is installed at the outer end of the first connecting flange 413. An extension sleeve telescopic part 419 is installed at the outer end of the second connecting flange 418. An extension sleeve elastic inner tube 4101 is fixedly connected inside the extension sleeve telescopic part 419. The sleeve telescopic assembly 41 can be adjusted by adjusting the position of the adjusting nut 417 on the adjusting rod 416. The telescopic of the telescopic part 412 is realized through manual adjustment. The whole has the advantages of simple installation and convenient maintenance. Only need to install the expander on the sleeve and adjust the tightening degree of the adjusting nut 417 to complete the installation. When maintenance or component replacement is needed, only need to loosen the adjusting nut 417 to facilitate maintenance and replacement, reducing the maintenance time and cost. During the use process, this assembly can effectively absorb the thermal deformation and mechanical vibration generated during the telescoping of the sleeve, reduce the stress concentration and fatigue damage of the sleeve, and improve the service life and safety of the sleeve; Four groups of connecting seats 415 are fixedly connected to the surface of the first connecting flange 413. The sealing ring 414 is installed at the connection between the first connecting flange 413 and the telescopic part 412. A sealing ring 414 is installed at the connection between the second connecting flange 418 and the first connecting flange 413; The cable body 1, the inner elastic shielding lining 2 and the elastic inner protective sleeve 3 all penetrate through the inside of the sleeve telescopic assembly 41; The telescopic component 42 inside the sleeve includes a connecting portion 421. The connecting portion 421 is fixedly connected to the outer end of the second connecting flange 418. An internal metal ring 422 is fixedly connected inside the elastic inner tube 4101 of the extended sleeve. One end of an elastic connecting member 423 is fixedly connected to the inner end of the internal metal ring 422. An elastic connecting member 424 is fixedly connected to the surface of the internal metal ring 422. When the sleeve expands and contracts, the telescopic portion 419 of the extended sleeve and the elastic inner tube 4101 of the extended sleeve will expand and contract. At this time, the fixed internal metal ring 422 inside the elastic inner tube 4101 of the extended sleeve will move accordingly. With the movement of the telescopic portion 419 of the extended sleeve and the elastic inner tube 4101 of the extended sleeve, the intervals between multiple internal metal rings 422 are changed, thereby improving the protection for the cable body 1, the inner elastic shielding lining 2, and the elastic inner protective sleeve 3. Through the arrangement of the elastic connecting member 423 and the elastic connecting member 424, the adaptability of the telescopic component 42 inside the sleeve can be improved, and it can adapt to the length of the extended sleeve. Conversely, when the sleeve contracts, the fixing frame will approach accordingly, always maintaining effective fixation of the cable. The internal metal ring 422 and the elastic connecting member 423 are symmetrically distributed on the inner wall of the sleeve to ensure uniform fixing force on the cable. Through the arrangement of this component, the protection for the cable can be effectively improved during the expansion and contraction of the sleeve, adapting to different wiring scenarios, and at the same time having good durability, insulation, and convenient installation and operation performance; One end of the elastic connecting member 423 away from the internal metal ring 422 is fixedly connected to the surface of the elastic inner protective sleeve 3. The internal metal rings 422 are connected together through the elastic connecting member 424. Embodiment 2

[0023] Please refer to Figures 1-7, and on the basis of the first embodiment, a sleeve auxiliary telescopic mechanism 5 is further obtained. The sleeve auxiliary telescopic mechanism 5 includes a fixed seat 51, and the fixed seat 51 is fixedly connected to one end of the extended sleeve elastic inner tube 4101 close to the second connecting flange 418. An external thread 52 is provided on the surface of the fixed seat 51, a limit sleeve 53 is installed on the surface of the fixed seat 51, an internal thread 54 is provided inside the limit sleeve 53, a telescopic part node protection ring 55 is fixedly connected to the surface of the extended sleeve telescopic part 419, an elastic connecting piece three 56 is fixedly connected to the surface of the telescopic part node protection ring 55, and an external protection ring 57 is fixedly connected to the outer end of the elastic connecting piece three 56. The setting of the limit sleeve 53 can limit the extended sleeve telescopic part 419 and the extended sleeve elastic inner tube 4101 when the sleeve does not need to be telescoped. When the sleeve needs to be telescoped, only need to loosen it to realize the telescoping. The whole is simple and fast. At the same time, the telescopic part node protection ring 55, the elastic connecting piece three 56 and the external protection ring 57 play a role in protecting the node part of the extended sleeve telescopic part 419. It can not only ensure the close fit of the extended sleeve telescopic part 419 and the extended sleeve elastic inner tube 4101, but also play a buffering role when subjected to external force impact, protecting the cable sleeve from damage. It is made of high-strength aluminum alloy material, which has the advantages of light weight, high strength, corrosion resistance, etc. It can effectively reduce the overall weight, and at the same time resist external physical damages such as collision and scratching. Its surface is treated by anodic oxidation to further enhance the corrosion resistance and wear resistance; The fixed seat 51 and the limit sleeve 53 are threadedly connected through the external thread 52 and the limit sleeve 53, and the external protection ring 57 is fixedly connected to one end of the elastic connecting piece three 56 away from the telescopic part node protection ring 55; The elastic connecting piece three 56, the elastic connecting piece one 423 and the elastic connecting piece two 424 are all made of ethylene propylene diene monomer rubber.

[0024] In the actual operation process, when this device is used, the sleeve telescopic assembly 41 can be adjusted by adjusting the position of the adjusting nut 417 on the adjusting rod 416, and the telescoping of the telescopic part 412 is realized through manual adjustment. The whole has the advantages of simple installation and convenient maintenance. Only need to install the expander on the sleeve and adjust the tightening degree of the adjusting nut 417 to complete the installation. When maintenance or component replacement is needed, only need to loosen the adjusting nut 417 to facilitate maintenance and replacement, reducing the maintenance time and cost. During the use process, this assembly can effectively absorb the thermal deformation and mechanical vibration generated during the telescoping of the sleeve, reduce the stress concentration and fatigue damage of the sleeve, and improve the service life and safety of the sleeve; When the sleeve expands and contracts, the telescopic part 419 of the extended sleeve and the elastic inner tube 4101 of the extended sleeve will expand and contract. At this time, the fixed built-in metal ring 422 inside the elastic inner tube 4101 of the extended sleeve will move accordingly. As the telescopic part 419 of the extended sleeve and the elastic inner tube 4101 of the extended sleeve move, the interval between multiple groups of built-in metal rings 422 is changed, thereby improving the protection for the cable body 1, the inner elastic shielding lining 2, and the elastic inner protective sleeve 3. Through the settings of the first elastic connecting piece 423 and the second elastic connecting piece 424, the adaptability of the telescopic assembly 42 inside the sleeve can be improved, and it can adapt to the length of the sleeve after elongation. On the contrary, when the sleeve contracts, the fixing frame moves closer accordingly, always maintaining effective fixation of the cable. The built-in metal ring 422 and the first elastic connecting piece 423 are symmetrically distributed on the inner wall of the sleeve to ensure uniform fixing force on the cable. Through the setting of this assembly, the protection for the cable can be effectively improved during the telescopic process of the sleeve, adapting to different wiring scenarios, and at the same time having good durability, insulation, and convenient installation and operation performance; The setting of the limit sleeve 53 can limit the telescopic part 419 of the extended sleeve and the elastic inner tube 4101 of the extended sleeve when the telescopic sleeve is not required. When the telescopic sleeve is needed, only loosening is required to achieve expansion and contraction, which is simple and fast as a whole. At the same time, the telescopic part node protection ring 55, the third elastic connecting piece 56, and the outer protection ring 57 protect the node part of the telescopic part 419 of the extended sleeve. It can not only ensure the close fit of the telescopic part 419 of the extended sleeve and the elastic inner tube 4101 of the extended sleeve, but also play a buffering role when subjected to external force impact, protecting the cable sleeve from damage. It is made of high-strength aluminum alloy material, which has the advantages of light weight, high strength, and corrosion resistance. It can effectively reduce the overall weight and at the same time resist physical damages such as external collision and scratching. Its surface is treated by anodic oxidation to further enhance corrosion resistance and wear resistance; In this design, the first elastic connector 423, the second elastic connector 424, and the third elastic connector 56 are all made of ethylene propylene diene monomer (EPDM). This material is renowned for its excellent aging resistance, ozone resistance, and chemical corrosion resistance, making it highly suitable for use in complex and variable environments, thus ensuring the long-term stable operation of the entire protection device. It is in the shape of a slender strip, with a width of approximately 5 - 10 millimeters and a thickness of 1 - 2 millimeters. Such a dimensional design enables it to have sufficient flexibility while also possessing a certain strength, capable of adapting to various stress changes generated during the expansion and contraction of the cable sleeve. When the cable sleeve expands and contracts, due to the presence of the first elastic connector 423 and the second elastic connector 424, the internal metal rings 422 can move and deform flexibly. During the elongation process, the distance between the internal metal rings 422 gradually increases, and the first elastic connector 423 and the second elastic connector 424 are stretched; during the contraction process, the distance between the internal metal rings 422 decreases, and the first elastic connector 423 and the second elastic connector 424 return to their original state, which can ensure that the internal metal rings 422 are always evenly distributed inside, continuously providing stable support for the entire protection device, effectively dispersing the external pressure that may act on the cable, and preventing the cable from being damaged due to excessive local pressure.

[0025] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including", or any other variant thereof is intended to cover non-exclusive inclusion, such that a process, method, article, or device comprising a series of elements not only includes those elements but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article, or device.

[0026] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims

1. A flexible cable sleeve with a retractable and adjustable length, comprising a cable body (1), characterized in that: The surface of the cable body (1) is sleeved with an inner elastic shielding liner (2), the outer end of the inner elastic shielding liner (2) is sleeved with an elastic inner protective sleeve (3), the outer end of the cable body (1) is provided with a sleeve telescopic mechanism (4), the sleeve telescopic mechanism (4) comprises a sleeve telescopic component (41) and a sleeve inner telescopic component (42), and the surface of the sleeve telescopic component (41) is provided with a sleeve auxiliary telescopic mechanism (5); The sleeve telescopic assembly (41) comprises a main sleeve (411), wherein the main sleeve (411) is arranged in the middle section of the surface of the cable body (1), and the front and rear ends of the main sleeve (411) are fixedly connected to telescopic parts (412), the outer end of the telescopic part (412) is fixedly connected to a connecting flange 1 (413), a sealing ring (414) is installed inside the connecting flange 1 (413), a connecting seat (415) is fixedly connected to the surface of the connecting flange 1 (413), an adjusting rod (416) is inserted inside the connecting seat (415), and adjusting nuts (417) are installed on the front and rear ends of the surface of the adjusting rod (416), a connecting flange 2 (418) is installed on the outer end of the connecting flange 1 (413), an extension sleeve telescopic part (419) is installed on the outer end of the connecting flange 2 (418), and an extension sleeve elastic inner tube (4101) is fixedly connected inside the extension sleeve telescopic part (419).

2. The flexible cable sleeve with adjustable length according to claim 1, characterized in that: Four groups of connecting seats (415) are fixedly connected to the surface of the connecting flange 1 (413), the sealing ring (414) is installed at the connection between the connecting flange 1 (413) and the telescopic part (412), and the sealing ring (414) is installed at the connection between the connecting flange 2 (418) and the connecting flange 1 (413).

3. The flexible cable sleeve with adjustable length according to claim 2, characterized in that: The cable body (1), the inner elastic shielding liner (2) and the elastic inner protective sleeve (3) all penetrate the interior of the sleeve telescopic assembly (41).

4. The flexible cable sleeve with adjustable length according to claim 3, characterized in that: The telescopic assembly (42) in the sleeve comprises a connecting portion (421), the connecting portion (421) being fixedly connected to the outer end of the second connecting flange (418), the elastic inner tube (4101) of the extension sleeve being fixedly connected to an internal metal ring (422), the inner end of the internal metal ring (422) being fixedly connected to an elastic connecting piece 1 (423), and the surface of the internal metal ring (422) being fixedly connected to an elastic connecting piece 2 (424).

5. The flexible cable sleeve with adjustable length according to claim 4, characterized in that: One end of the elastic connecting piece 1 (423) away from the built-in metal ring (422) is fixedly connected to the surface of the elastic inner protective sleeve (3), and the built-in metal ring (422) is connected together via the elastic connecting piece 2 (424).

6. The flexible cable sleeve with adjustable length according to claim 5, characterized in that: The sleeve auxiliary telescopic mechanism (5) comprises a fixing seat (51), the fixing seat (51) being fixedly connected to one end of the elastic inner tube (4101) of the extension sleeve close to the second connecting flange (418), the fixing seat (51) having an external thread (52) on its surface, a limiting sleeve (53) being installed on its surface, the limiting sleeve (53) having an internal thread (54) on its interior, a telescopic portion node protection ring (55) being fixedly connected to the surface of the telescopic portion (419) of the extension sleeve, the telescopic portion node protection ring (55) being fixedly connected to the surface of an elastic connecting piece three (56), and the outer end of the elastic connecting piece three (56) being fixedly connected to an external protection ring (57).

7. The flexible cable sleeve with adjustable length according to claim 6, characterized in that: The fixing seat (51) and the limiting sleeve (53) are threadedly connected via an external thread (52) and the limiting sleeve (53), and the outer protective ring (57) is fixedly connected to an end of the elastic connecting member 3 (56) away from the telescopic portion node protective ring (55).

8. The flexible cable sleeve with adjustable length according to claim 7, characterized in that: The elastic connecting member 3 (56), the elastic connecting member 1 (423) and the elastic connecting member 2 (424) are all made of EPDM rubber.

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