A cable for training

Abstract

The utility model discloses a kind of training cable, including the outer protective layer for protecting cable;Galvanized part is arranged to the inner wall of the outer protective layer for reinforcing cable structure;Inner protective layer is arranged to the inner wall of the galvanized part for providing multilayer protection for cable;Filler is arranged to the inner wall of the inner protective layer for providing buffer for cable;Conductive assembly is arranged to the inner wall of the filler, including for providing the semiconductive piece of support for cable, the insulating layer for insulating cable is arranged to the inner wall of the semiconductive piece, and the core body of electrically conductive is arranged to the inner wall of the insulating layer. By polyethylene replaces core metal component, in combination with the selection of other low-cost components, the overall training material procurement cost can be greatly reduced, and the problem of high training cost can be effectively solved.

Description

Technical Field

[0001] This utility model relates to the field of cable models, and in particular to a training cable. Background Technology

[0002] In the training of novice cable joint installation personnel, operators need to master a series of core operational skills such as wire stripping, shielding treatment, conductor core splicing, and joint crimping. Proficiency in these skills relies heavily on hands-on practice. Currently, the industry standard practice is to use real cables as the training medium. These real cables typically contain multiple layers, including a metal conductor, insulation layer, shielding layer, and outer sheath, and their materials are identical to those used in actual engineering projects.

[0003] However, using real cables for training has the following technical drawbacks. First, the metal conductors and shielding layers of real cables are high-cost materials, and a single training session requires multiple real cables of different specifications, resulting in high material procurement costs. Second, novices have low operational proficiency and are prone to irreversible damage such as insulation tearing, shielding layer breakage, and conductor core bending during wire stripping and crimping. Damaged real cables cannot be reused for training due to the loss of their core functional structure, further increasing the cost of consumable replacement. Utility Model Content

[0004] Therefore, the technical problem to be solved by this utility model is that the metal conductor and shielding layer of real cables are both high-cost materials, and a single training session requires the consumption of multiple real cables of different specifications, resulting in high material procurement costs.

[0005] The above-mentioned technical problems are solved by the following technical solution: This utility model proposes a training cable, which includes an outer protective layer; Galvanized parts disposed on the inner wall of the outer protective layer; A protective layer is provided on the inner wall of the galvanized part; A filler element disposed on the inner wall of the inner protective layer; The conductive component disposed on the inner wall of the filler includes a semiconducting component, an insulating layer disposed on the inner wall of the semiconducting component, and a conductive core disposed on the inner wall of the insulating layer. The filler fills the gap between the semiconducting component and the inner protective layer, and both the semiconducting component and the core are made of polyethylene.

[0006] In a preferred embodiment of the training cable of this utility model, a shielding layer is provided between the insulation layer and the semiconducting component.

[0007] In a preferred embodiment of the training cable of this utility model: the outer protective layer and the inner protective layer are both made of polyethylene, the filler is made of polypropylene, the insulation layer is made of nylon, and three conductive components are provided, which are arranged in a triangular pattern inside the inner protective layer.

[0008] In a preferred embodiment of the training cable of this utility model: the outer protective layer includes a first main body for providing protection for the cable, and a first cut portion disposed on one side of the first main body, the first cut portion being detachably installed at the port of the first main body.

[0009] In a preferred embodiment of the training cable of this utility model: the galvanized part includes a second main body part disposed on the inner wall of the first main body part, and a second cutting part disposed on the side of the second main body part near the first cutting part; The second cutting part is detachably installed at the port of the second main body. The second cutting part is located inside the first cutting part. The length of the second cutting part is less than the length of the first cutting part, and the second cutting part and the first cutting part are in clearance fit.

[0010] In a preferred embodiment of the training cable of this utility model: the inner protective layer includes a third main body disposed on the inner wall of the second main body, and a third cutting portion disposed on the side of the third main body near the second cutting portion; The third cutting part is detachably installed at the port of the third main body. The third cutting part is located inside the second cutting part. The length of the third cutting part is less than the length of the second cutting part, and the third cutting part and the second cutting part are in clearance fit.

[0011] In a preferred embodiment of the training cable of this utility model: the filler includes a fourth main body disposed on the inner wall of the third main body, and a fourth cutting portion disposed on the side of the fourth main body near the third cutting portion; The fourth cutting part is detachably installed at the port of the fourth main body. The fourth cutting part is located inside the third cutting part. The length of the fourth cutting part is less than the length of the third cutting part, and the fourth cutting part and the third cutting part are in clearance fit.

[0012] In a preferred embodiment of the training cable of this utility model: the semiconducting component includes a fifth main body portion disposed on the inner wall of the fourth main body portion, and a fifth cutting portion disposed on the side of the fifth main body portion near the fourth cutting portion; The fifth cutting part is detachably installed at the port of the fifth main body. The fifth cutting part is located inside the fourth cutting part. The length of the fifth cutting part is less than the length of the fourth cutting part, and the fifth cutting part and the fourth cutting part are in clearance fit.

[0013] In a preferred embodiment of the training cable of this utility model: the insulation layer includes a sixth main body portion disposed on the inner wall of the fifth main body portion, and a sixth cutting portion disposed on the side of the sixth main body portion near the fifth cutting portion; The sixth cutting part is detachably installed at the port of the sixth main body. The sixth main body has the sixth cutting part located inside the fifth cutting part. The length of the sixth cutting part is less than the length of the fifth cutting part, and the sixth cutting part and the fifth cutting part are in clearance fit.

[0014] In a preferred embodiment of the training cable of this utility model: the first main body and the first cutting part are connected to each other by a snap-fit ​​structure; the second main body and the second cutting part are connected to each other by a snap-fit ​​structure; the third main body and the third cutting part are connected to each other by a snap-fit ​​structure; the fourth main body and the fourth cutting part are connected to each other by a magnetic attraction structure; the fifth main body and the fifth cutting part are connected to each other by a snap-fit ​​structure; and the sixth main body and the sixth cutting part are connected to each other by a snap-fit ​​structure.

[0015] The beneficial effects of this utility model are as follows: by using simulated cables to replace real cables, the overall cost of training materials can be significantly reduced, effectively solving the problem of high training costs. At the same time, each component adopts a modular nesting and filling structure, and when a local component is worn, the corresponding part can be replaced individually without scrapping the whole cable, which greatly improves resource utilization efficiency and avoids the problem of waste caused by local damage. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings of the embodiments of this utility model will be briefly described below. Obviously, the drawings described below only relate to some embodiments of this utility model and are not intended to limit the scope of this utility model. Wherein: Figure 1 The overall structure diagram is shown; Figure 2 It shows Figure 1 Cross-sectional view; Figure 3 A disassembled diagram of the overall structure is shown. Detailed Implementation

[0017] To enable those skilled in the art to better understand this utility model, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0018] The terminology used in this invention refers to those general terms currently widely used in the art in consideration of the functionality of this invention; however, these terms may vary according to the intent, precedent, or new technology of those skilled in the art. Furthermore, specific terms may be chosen by the applicant, and in such cases, their detailed meanings will be described in the detailed description of this invention. Therefore, the terminology used in this specification should not be construed as simple names, but rather based on the meaning of the terms and the overall description of this invention.

[0019] Reference Figures 1-3 This embodiment provides a training cable, including: Outer protective layer 1 used to protect the cable; It also includes a galvanized component 2 installed on the inner wall of the outer protective layer 1 to reinforce the cable structure, wherein the galvanized component 2 is made of galvanized steel armor.

[0020] It also includes an inner protective layer 3 disposed on the inner wall of the galvanized part 2 to provide multiple layers of protection for the cable; It also includes a filler 4 disposed on the inner wall of the inner protective layer 3 to provide cushioning for the cable; It also includes a conductive component 6 disposed on the inner wall of the filler 4, including a semi-conductive component 61 for providing support for the cable, an insulating layer 62 disposed on the inner wall of the semi-conductive component 61 for insulating the cable, and a conductive core 63 disposed on the inner wall of the insulating layer 62; the filler 4 fills the gap between the semi-conductive component 61 and the inner protective layer 3, and both the semi-conductive component 61 and the core 63 are made of polyethylene.

[0021] In summary, by replacing the high-cost metal core 63 and semi-conductive metal components in real cables with polyethylene material, and by using other suitable low-cost components, the overall procurement cost of training materials can be significantly reduced, solving the problem of high training costs. At the same time, polyethylene material has good toughness and processability. When beginners perform operations such as stripping wire and connecting core 63, even if there are operational deviations, it is not easy to cause irreversible bending or breakage of the metal core 63. Meanwhile, the polyethylene semi-conductive component 61 can accurately simulate the structure and peeling feel of the real semi-conductive layer, ensuring that the operating experience is consistent with that of real cables. On the other hand, the model fully retains the multi-layer structure of outer protective layer 1, galvanized part 2, inner protective layer 3, filler part 4, insulation layer 62, etc. The nesting, covering and gap filling methods between each component are completely replicated to the real cable, avoiding the distortion of the training scene due to structural differences. Through targeted material optimization and structural replication design, it effectively solves the problems of high cost, high loss rate and low resource utilization rate of existing real cable training.

[0022] It should be noted that the damage-resistant properties of polyethylene material prevent irreversible damage such as tearing or breakage to key operating parts like the core 63 and semi-conductive component 61 during novice practice. Minor damage can be easily repaired and the cable can continue to be used, significantly reducing material consumption and increasing reusability, thus improving the current situation of high material consumption. Each component adopts a modular structure of nesting and filling. When local components such as the outer protective layer 1 and galvanized component 2 show wear, the corresponding parts can be replaced individually without scrapping the entire cable, effectively improving resource utilization efficiency and avoiding the problem of wasting the entire cable due to local damage. At the same time, the consistency of the multi-layer structure with real cables allows novices to master core skills such as stripping force, processing steps, and connector installation accuracy that are completely matched to actual engineering projects, ensuring that the training effect is not affected by material substitution. As an alternative embodiment, the structure of the cable model is specifically described.

[0023] A shielding layer 8 is disposed between the insulation layer 62 and the semiconducting component 61. The shielding layer 8 precisely replicates the shielding structure between the insulation layer 62 and the semiconducting component 61 in a real cable. It is made of a low-cost material similar in shape to the shielding layer 8 of a real cable, such as a plastic mesh or a plastic film coated with shielding paint. This retains the interlayer positional relationship and tactile feel of the real shielding layer 8 while maintaining the low cost and high toughness of the overall model. During training, beginners must perform specific operations such as locating, stripping, and straightening the shielding layer 8, just like handling a real cable. This shielding layer 8 provides a realistic practical tool for these key steps, filling the gap in training on shielding layer 8 handling in existing models.

[0024] Both the outer protective layer 1 and the inner protective layer 3 are made of polyethylene, the filler 4 is made of polypropylene, and the insulation layer 62 is made of nylon. The outer protective layer 1 and the inner protective layer 3 are made of polyethylene, which has a hardness and peel resistance similar to that of a real cable sheath, accurately simulating the force feedback and feel during sheath removal. Furthermore, the high toughness of polyethylene can withstand the friction and pulling caused by repeated stripping by beginners. The filler 4 is made of polypropylene, whose granular or strip-like shape perfectly replicates the gap-filling function of the filler 4 in a real cable. Polypropylene is also lightweight and not easily broken, allowing beginners to repeatedly adjust the filler 4 to create space for conductive components without damage. The insulation layer 62 is made of nylon, whose insulation properties and structural strength simulate the physical properties of a real cable insulation layer. When peeling the insulation layer 62 to expose the core 7, beginners can experience the same peeling difficulty as with a real insulation layer, and nylon is less prone to tearing or breaking due to operational errors.

[0025] There are three conductive components 6, which are arranged in a triangular pattern inside the inner protective layer 3. The triangular arrangement is a typical layout of the internal balanced structure of a multi-core cable. It can achieve a uniform arrangement of each conductive component within the limited space of the inner sheath 3, which not only avoids mutual compression between components, but also simulates the internal spatial relationship of a multi-core cable in real engineering.

[0026] During the training, novices are required to handle scenarios with multiple conductive components, just like with real three-core cables. They learn how to perform operations such as stripping wires, processing the shielding layer, and installing connectors on the target conductive component without interfering with other conductive components. This fills the gap in multi-core cable training using single conductive component models.

[0027] The outer protective layer 1 includes a first main body 11 for providing protection for the cable, and a first cutting part 12 disposed on one side of the first main body 11. The first cutting part 12 is detachably installed at the port of the first main body 11. The first cutting part 12 serves as the port portion of the outer protective layer 1 and is connected to the first main body 11 by means of snaps, slots, or other detachable means, thereby maintaining the integrity of the overall structure of the outer protective layer 1.

[0028] During training, novices use a plastic knife to simulate cutting the first cutting part 12. Unlike real cables, they do not need to cut the sheath body. After the cutting action is completed, the first cutting part 12 can be directly removed from the first main body 11, reinstalled, or replaced with a new first cutting part 12 to restore the outer protective layer 1 to its initial state and achieve repeated practice of the cutting steps.

[0029] The galvanized part 2 includes a second main body 21 disposed on the inner wall of the first main body 11, and a second cutting part 22 disposed on the side of the second main body 21 near the first cutting part 12. The second cutting part 22 is detachably installed at the port of the second main body 21. The second cutting part 22 is disposed inside the first cutting part 12. The length of the second cutting part 22 is less than the length of the first cutting part 12, and the second cutting part 22 and the first cutting part 12 are in clearance fit. In order to achieve a balance between simulation and reuse, the second main body 21 is attached to the inner side of the first main body 11 and the second cutting part 22 is embedded in the inner side of the first cutting part 12 to completely match the interlayer position relationship of the galvanized part 2 wrapped inside the outer protective layer 1 in the real cable. This allows novices to intuitively understand the real operation sequence of first stripping the outer sheath 1 and then processing the steel armor.

[0030] Meanwhile, in addition to achieving positional correspondence and structural replication, the detailed design has also been adapted to meet training needs. The second cutting part 22 is shorter than the first cutting part 12, forming a staggered layered shape at the port. The gap between the two is designed to allow for operation space. When a novice uses a plastic knife to simulate cutting, the first cutting part 12 can be removed first, and then the exposed second cutting part 22 can be cut separately without damaging the steel armor body. After the operation, only the second cutting part 22 needs to be replaced or reset to restore the initial structure.

[0031] The inner protective layer 3 includes a third main body 31 disposed on the inner wall of the second main body 21, and a third cutting part 32 disposed on the side of the third main body 31 near the second cutting part 22. The third cutting part 32 is detachably installed at the port of the third main body 31 and is located inside the second cutting part 22. The length of the third cutting part 32 is less than the length of the second cutting part 22, and the third cutting part 32 and the second cutting part 22 are in clearance fit. In order to fit the actual operation and the real cable, the inner protective layer 3 also adopts a split structure. Its third cutting part 32 is also connected to the third main body 31 by a detachable means such as a buckle or a slot. After the second cutting part 22 is removed, the third cutting part 32 can be disassembled and cut to help trainees understand the structure of the inner cable of the inner protective layer 3.

[0032] The filler 4 includes a fourth main body 41 disposed on the inner wall of the third main body 31, and a fourth cutting part 42 disposed on the side of the fourth main body 41 near the third cutting part 32. The fourth cutting part 42 is detachably installed at the port of the fourth main body 41 and is disposed inside the third cutting part 32. The length of the fourth cutting part 42 is less than the length of the third cutting part 32, and the fourth cutting part 42 and the third cutting part 32 are in clearance fit. As mentioned above, the filler 4 is also divided into two parts. The fourth cutting part 42 is also detachably connected to the fourth main body 41 by means of buckles, slots, etc. During training, the fourth cutting part 42 can be directly separated from the fourth main body 41, so that trainees can quickly understand the cable structure inside the filler 4.

[0033] The semiconducting component 61 includes a fifth main body 611 disposed on the inner wall of the fourth main body 41, and a fifth cutting part 612 disposed on the side of the fifth main body 611 near the fourth cutting part 42. The fifth cutting part 612 is detachably installed at the port of the fifth main body 611 and is disposed inside the fourth cutting part 42. The length of the fifth cutting part 612 is less than the length of the fourth cutting part 42, and there is a clearance fit between the fifth cutting part 612 and the fourth cutting part 42. The semiconducting component 61 is a conductive unit of the cable, and its main body is also divided into two parts. The fifth cutting part 612 is also detachably connected to the fifth main body 611 by means of buckles, slots, etc. The fifth cutting part 612 can also be directly removed to show the cable structure inside the semiconducting component 61.

[0034] The insulating layer 62 includes a sixth main body portion 621 disposed on the inner wall of the fifth main body portion 611, and a sixth cutting portion 622 disposed on the side of the sixth main body portion 621 near the fifth cutting portion 612. The sixth cutting portion 622 is detachably installed at the port of the sixth main body portion 621. The sixth main body portion 621 and the sixth cutting portion 622 are disposed inside the fifth cutting portion 612. The length of the sixth cutting portion 622 is less than the length of the fifth cutting portion 612, and the sixth cutting portion 622 and the fifth cutting portion 612 are in clearance fit. As mentioned above, the insulating layer 62 is also a separable structure. This achieves full-process multi-layer peeling training coverage, filling the gap previously only covering the outer protective layer 1. This addresses the gap in steel armor cutting training, allowing beginners to systematically master the complete core process of real cable joint installation, from the outside in, peeling off the inner protective layer 3, cleaning the filler 4, peeling off the semi-conductive component 61, and exposing the insulation component 62. This avoids the inability to handle the multi-layer processing requirements of actual projects due to missing training components. At the same time, it maximizes the reproduction of real operation details. The decreasing length of the cutting section simulates the staggered relationship of each layer port after real peeling, and the gap matching provides the same interlayer operation space as real cables. When beginners practice key actions such as locating the inner layer boundary, controlling the peeling force, and avoiding accidentally cutting adjacent layers, the feel and logic are completely in line with reality, solving the problem of the disconnect between single-level training and real operation.

[0035] Secondly, the detachable design of the cable model structure enhances component reusability and cost advantages. Each layer's cutting section is independently detachable. Even if a certain layer's cutting section wears out due to repeated operations, only that layer's cutting section needs to be replaced, without replacing the entire layer's main body, significantly reducing material replacement costs. At the same time, all cutting sections still use low-cost plastic materials, continuing the core feature of the overall model: low cost and high-frequency reusability. In addition, the operation guidance is enhanced. The decreasing length sequence from the outside to the inside and the clear interlayer gaps help beginners quickly understand the operation logic of which layer to peel first and which to peel next, reducing misoperations caused by confusion between layers, improving training efficiency and accuracy, and fully meeting the practical training needs of beginners in handling multi-layer cable structures.

[0036] As an optional embodiment, various connection structures between the main body and the cutting part are provided.

[0037] The first main body 11 and the first cutting part 12 are connected to each other by a snap-fit ​​structure. The second main body 21 and the second cutting part 22 are connected to each other by a snap-fit ​​structure. The third main body 31 and the third cutting part 32 are connected to each other by a snap-fit ​​structure. The fourth main body 41 and the fourth cutting part 42 are connected to each other by a magnetic attraction structure. The fifth main body 611 and the fifth cutting part 612 are connected to each other by a snap-fit ​​structure. The sixth main body 621 and the sixth cutting part 622 are connected to each other by a snap-fit ​​structure. The snap-fit ​​structure is achieved by the matching shape of the protrusion / groove on the main body and the corresponding groove / protrusion on the cutting part. The novice can manually align and press to snap it in place, and apply force in the opposite direction to separate it, without the need for screwdrivers or other tools.

[0038] It should be noted that a magnetic structure can also be used instead of a snap-fit ​​structure to achieve quick connection and separation between the main body and the cutting part. The connection is achieved by embedding a small permanent magnet or magnetic plastic in the mating surface of the main body and the cutting part. The magnetic attraction ensures a firm fit, and separation only requires a slight manual pull.

[0039] It is important to note that the semiconducting component 5 explicitly adopts a magnetic structure, which is suitable for its thinner shape. Magnetic attraction makes precise alignment easier and avoids damage to the structure of the semiconducting component 5 caused by the buckle protrusion. The other components have a design that allows for either magnetic attraction or buckle, which can be flexibly adapted according to the thickness and material of each component. For example, the outer sheath 1 and galvanized steel armor 2 are thicker, and the protrusions / grooves of the buckle structure are easier to process and have higher connection strength. On the other hand, the inner sheath 3 and filler 4 are lighter, and the magnetic structure makes it easier to quickly assemble and disassemble. Both connection methods can ensure the stability of the connection while allowing novices to complete the assembly and disassembly independently without causing irreversible damage to the main body or cut parts.

[0040] The technical principles of this application have been described above with reference to specific embodiments. These descriptions are merely for explaining the principles of this application and should not be construed as limiting the scope of protection of this application in any way. Based on this explanation, those skilled in the art can readily conceive of other specific embodiments of this application without creative effort, including training wire models produced using other non-metallic materials as cable cores, or replacing copper and aluminum cores with polyethylene and other non-metallic materials; these methods will all fall within the scope of protection of this application. Finally, it should be noted that the methods and devices described in detail above are merely embodiments, and those skilled in the art can modify these embodiments in different ways as long as they do not depart from the scope of this utility model.

Claims

1. A training cable, characterized by: include, (1) is an outer protective layer used to protect cables. The galvanized part (2) is disposed on the inner wall of the outer protective layer (1); The inner protective layer (3) is provided on the inner wall of the galvanized part (2); Filler (4) disposed on the inner wall of the inner protective layer (3); The conductive component (6) disposed on the inner wall of the filler (4) includes a semiconducting component (61), an insulating layer (62) disposed on the inner wall of the semiconducting component (61), and a conductive core (63) disposed on the inner wall of the insulating layer (62). The filler (4) fills the gap between the semiconducting element (61) and the inner protective layer (3), and both the semiconducting element (61) and the core (63) are made of polyethylene.

2. The training cable according to claim 1, characterized in that: A shielding layer (8) is provided between the insulating layer (62) and the semiconducting component (61).

3. A training cable according to claim 2, characterised in that: The outer protective layer (1) and the inner protective layer (3) are both made of polyethylene, the filler (4) is made of polypropylene, the insulating layer (62) is made of nylon, and three conductive components (6) are provided, which are arranged in a triangular pattern inside the inner protective layer (3).

4. A training cable according to claim 3, characterised in that: The outer protective layer (1) includes a first main body (11) for providing protection for the cable, and a first cutting part (12) disposed on one side of the first main body (11), the first cutting part (12) being detachably installed at the port of the first main body (11).

5. A training cable according to claim 4, characterised in that: The galvanized part (2) includes a second main body (21) disposed on the inner wall of the first main body (11), and a second cutting part (22) disposed on the side of the second main body (21) near the first cutting part (12). The second cutting part (22) is detachably installed at the port of the second main body (21). The second cutting part (22) is located inside the first cutting part (12). The length of the second cutting part (22) is less than the length of the first cutting part (12), and the second cutting part (22) and the first cutting part (12) are in clearance fit.

6. A training cable according to claim 5, characterised in that: The inner protective layer (3) includes a third main body (31) disposed on the inner wall of the second main body (21), and a third cutting part (32) disposed on the side of the third main body (31) near the second cutting part (22). The third cutting part (32) is detachably installed at the port of the third main body (31). The third cutting part (32) is located inside the second cutting part (22). The length of the third cutting part (32) is less than the length of the second cutting part (22), and the third cutting part (32) and the second cutting part (22) are in clearance fit.

7. A training cable according to claim 6, characterised in that: The filler (4) includes a fourth main body (41) disposed on the inner wall of the third main body (31), and a fourth cutting part (42) disposed on the side of the fourth main body (41) near the third cutting part (32). The fourth cutting part (42) is detachably installed at the port of the fourth main body (41). The fourth cutting part (42) is located inside the third cutting part (32). The length of the fourth cutting part (42) is less than the length of the third cutting part (32), and the fourth cutting part (42) and the third cutting part (32) are in clearance fit.

8. A training cable according to claim 7, characterised in that: The semiconductor component (61) includes a fifth main body (611) disposed on the inner wall of the fourth main body (41) and a fifth cutting part (612) disposed on the side of the fifth main body (611) near the fourth cutting part (42). The fifth cutting part (612) is detachably installed at the port of the fifth main body (611). The fifth cutting part (612) is located inside the fourth cutting part (42). The length of the fifth cutting part (612) is less than the length of the fourth cutting part (42), and the fifth cutting part (612) and the fourth cutting part (42) are in clearance fit.

9. A training cable according to claim 8, characterised in that: The insulating layer (62) includes a sixth main body (621) disposed on the inner wall of the fifth main body (611), and a sixth cutting part (622) disposed on the side of the sixth main body (621) near the fifth cutting part (612). The sixth cutting part (622) is detachably installed at the port of the sixth main body (621). The sixth main body (621) has the sixth cutting part (622) located inside the fifth cutting part (612). The length of the sixth cutting part (622) is less than the length of the fifth cutting part (612), and the sixth cutting part (622) and the fifth cutting part (612) are in clearance fit.

10. A training cable according to claim 9, characterised in that: The first main body (11) and the first cutting part (12) are connected to each other by a snap-fit ​​structure, the second main body (21) and the second cutting part (22) are connected to each other by a snap-fit ​​structure, the third main body (31) and the third cutting part (32) are connected to each other by a snap-fit ​​structure, the fourth main body (41) and the fourth cutting part (42) are connected to each other by a magnetic attraction structure, the fifth main body (611) and the fifth cutting part (612) are connected to each other by a snap-fit ​​structure, and the sixth main body (621) and the sixth cutting part (622) are connected to each other by a snap-fit ​​structure.

Images