Loop cable for multi-shielding frequency converter

Abstract

The utility model relates to the technical field of cables, and discloses a multi-shielding loop cable for a frequency converter, which comprises a conductor, an insulating layer extruded on the outer surface of the conductor, a protective layer arranged on the outer surface of the insulating layer, a wrapping layer wrapped on the outer surface of the protective layer, and a metal shielding layer woven on the outer surface of the wrapping layer. Shielded wires are uniformly and fixedly connected between the wrapping layer and the metal shielding layer, a metal armor layer is arranged on the outer surface of the metal shielding layer, an outer sheath is extruded on the outer surface of the metal armor layer, a metal tube sleeves the outer surface of the outer sheath, a metal ring is slidably connected to the outer surface of the metal tube, and a metal disc is arranged above the metal ring. The lower end of the outer surface of the metal ring is provided with a take-up groove. According to the utility model, the shielding wire can be firmly fixed to be connected with the metal tube, and the grounding processing of the grounding wire is matched, so that a good shielding effect can be finally achieved through stable grounding, the metal tube, the shielding wire, the metal armor layer and the metal shielding layer.

Description

Technical Field

[0001] The utility model relates to the technical field of cables, in particular to a loop cable for a multi-shielded frequency converter. Background Art

[0002] Variable frequency speed regulation has a series of characteristics such as low noise, low energy consumption, stable speed regulation, and reliable operation at low temperatures. Therefore, it is widely used in machinery, metallurgy and other industries. In the frequency converter system, the loop cable is an important part.

[0003] In the existing technology, the inverter loop cable is generally equipped with a multi-layer shielding structure to reduce external electromagnetic interference and improve the transmission quality and stability of the signal. However, in actual use, relying solely on the cable's own materials is still not enough to meet the needs of some situations.

[0004] Therefore, we propose a multi-shielded inverter loop cable that can ensure stable grounding and good shielding effect to solve the above problems. Utility Model Content

[0005] The purpose of the utility model is to provide a multi-shielded inverter loop cable to solve the problems raised in the above background technology.

[0006] The purpose of the utility model can be achieved through the following technical solutions:

[0007] A multi-shielded inverter loop cable comprises a conductor, an insulating layer is extruded on the outer surface of the conductor, a protective layer is arranged on the outer surface of the insulating layer, a sheath is wrapped around the outer surface of the protective layer, a metal shielding layer is woven on the outer surface of the sheath, a shielding wire is evenly and fixedly connected between the sheath and the metal shielding layer, a metal armor layer is arranged on the outer surface of the metal shielding layer, an outer sheath is extruded on the outer surface of the metal armor layer, a metal tube is sleeved on the outer surface of the outer sheath, a metal ring is slidably connected to the outer surface of the metal tube, a metal disk is arranged above the metal ring, a wire take-up groove is provided at the lower end of the outer surface of the metal ring, and a ground wire is fixedly connected inside the wire take-up groove.

[0008] As a further solution of the utility model: a rubber layer is fixedly connected to the bottom end of the metal disk, and the diameter of the rubber layer is equal to the diameter of the metal disk.

[0009] As a further solution of the utility model: a threaded pipe is fixedly connected to the bottom end of the metal plate, and a threaded groove is correspondingly provided at the top end of the metal ring below the threaded pipe.

[0010] As a further solution of the utility model: a through hole is opened at the top of the metal disk, and the diameter of the through hole is equal to the diameter of the shielding wire.

[0011] As a further solution of the utility model: a notch is provided on one side of the top end of the metal ring, and the bottom end of the notch is flush with the bottom end of the inner part of the thread groove.

[0012] As a further solution of the utility model: wire passing holes are evenly arranged at the bottom end of the metal ring, and the width of the wire passing holes is greater than the diameter of the grounding wire.

[0013] As a further solution of the utility model: an adhesive tape is evenly adhered to the lower end of the outer surface of the metal ring, and a rubber pad matching the grounding wire and the wire through hole is fixedly connected to the inner side of the adhesive tape.

[0014] Beneficial effects of the utility model:

[0015] 1. A multi-shielded inverter loop cable in the utility model is achieved by firmly fixing a shielded wire to a metal plate and a metal ring, and then grounding the ground wire, and finally achieving a good shielding effect through stable grounding and metal pipes, shielded wires, metal armor layers and metal shielding layers.

[0016] 2. A multi-shielded inverter loop cable in the utility model can reel the ground wire inside the wire reeling slot, and can fix the ground wire by squeezing the adhesive tape and the rubber pad, thereby ensuring stable grounding of the ground wire and avoiding the problem of the ground wire being too long.

[0017] 3. A multi-shielded inverter loop cable in the utility model can threadably connect the metal disk and the metal ring, so that the metal disk and the metal ring clamp and fix the inverter cabinet plate, and cooperate with the sealing of the rubber layer to ensure the stability and sealing of the cable passing through. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to facilitate understanding by those skilled in the art, the present invention is further described below in conjunction with the accompanying drawings.

[0019] Figure 1 It is a three-dimensional structural schematic diagram of the utility model.

[0020] Figure 2 It is a partial structural schematic diagram of the utility model.

[0021] Figure 3 It is a schematic diagram of the three-dimensional structure of the metal ring of the utility model.

[0022] Figure 4 It is a schematic diagram of the three-dimensional structure of the metal plate of the utility model.

[0023] Figure 5 It is a three-dimensional structural schematic diagram of the adhesive tape of the utility model.

[0024] In the figure: 1. Conductor; 2. Protective layer; 3. Wrapping layer; 4. Metal armor layer; 5. Metal disk; 6. Grounding wire; 7. Metal tube; 8. Metal ring; 9. Outer sheath; 10. Metal shielding layer; 11. Shielding wire; 12. Insulating layer; 13. Notch; 14. Threaded groove; 15. Adhesive tape; 16. Wire take-up groove; 17. Threaded tube; 18. Rubber layer; 19. Through hole; 20. Rubber pad. DETAILED DESCRIPTION

[0025] The technical solution of the utility model will be described clearly and completely in conjunction with the embodiments below. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] like Figure 1-Figure 5 In this embodiment, a multi-shielded inverter loop cable includes a conductor 1, an insulating layer 12 is extruded on the outer surface of the conductor 1, a protective layer 2 is arranged on the outer surface of the insulating layer 12, a wrapping layer 3 is wrapped around the outer surface of the protective layer 2, a metal shielding layer 10 is woven on the outer surface of the wrapping layer 3, a shielding wire 11 is evenly and fixedly connected between the wrapping layer 3 and the metal shielding layer 10, a metal armor layer 4 is arranged on the outer surface of the metal armor layer 4, an outer sheath 9 is extruded on the outer surface of the outer sheath 9, a metal tube 7 is sleeved on the outer surface of the outer surface of the metal tube 7, a metal ring 8 is slidably connected to the outer surface of the metal tube 7, a metal disk 5 is arranged above the metal ring 8, a wire receiving groove 16 is opened at the lower end of the outer surface of the metal ring 8, and a grounding wire 6 is fixedly connected inside the wire receiving groove 16.

[0027] like Figure 1 and Figure 4 In this embodiment, the bottom end of the metal disk 5 is fixedly connected with a rubber layer 18, and the diameter of the rubber layer 18 is equal to the diameter of the metal disk 5. The rubber layer 18 can achieve good sealing and ensure the stability of the connection.

[0028] like Figure 1 , Figure 3 and Figure 4 In this embodiment, the bottom end of the metal disk 5 is fixedly connected with a threaded tube 17, and a threaded groove 14 is correspondingly provided at the top of the metal ring 8 below the threaded tube 17. By rotating the metal disk 5 so that the threaded tube 17 is threaded into the threaded groove 14, the connection between the metal disk 5 and the metal ring 8 can be achieved.

[0029] like Figure 4 In this embodiment, a through hole 19 is formed at the top of the metal disk 5 , and the diameter of the through hole 19 is equal to the diameter of the shielding wire 11 , so that the shielding wire 11 can pass through the through hole 19 .

[0030] like Figure 3 In this embodiment, a notch 13 is provided on one side of the top of the metal ring 8, and the bottom end of the notch 13 is flush with the bottom end of the inner part of the threaded groove 14. One end of the shielding wire 11 can be optionally extended out of the notch 13 to ensure the stability of the connection of the shielding wire 11.

[0031] like Figure 1 and Figure 3 In this embodiment, the bottom end of the metal ring 8 is evenly provided with wire holes, and the width of the wire holes is greater than the diameter of the grounding wire 6, so that part of the grounding wire 6 can pass through smoothly without being placed on the outer surface of the metal ring 8.

[0032] like Figure 1 and Figure 3 In this embodiment, an adhesive tape 15 is evenly adhered to the lower end of the outer surface of the metal ring 8, and a rubber pad 20 matching the grounding wire 6 and the wire hole is fixedly connected to the inner side of the adhesive tape 15. The adhesive tape 15 and the rubber pad 20 facilitate the fixing of the grounding wire 6 so that the grounding wire 6 is exposed to an appropriate length.

[0033] It can be understood that the multi-shielded inverter loop cable can firmly fix the shielding wire 11 to connect it to the metal tube 7, and cooperate with the grounding treatment of the grounding wire 6. Finally, a good shielding effect can be achieved through stable grounding and the metal tube 7, the shielding wire 11, the metal armor layer 4 and the metal shielding layer 10, and the grounding wire 6 can be well stored or the exposed length can be adjusted to ensure convenience of use.

[0034] The complete usage steps and working principle of the utility model are as follows:

[0035] During installation, first peel off the conductor 1 to expose part of it, then pass the metal ring 8 through the cable, then pass one end of the cable through the inverter cabinet, and pass the metal disc 5 through the cable so that the metal disc 5 and the metal ring 8 are on both sides of the inverter, then connect one of the shielding wires 11 to the grounding terminal on the inverter, and then pass one shielding wire 11 through the through hole 19, then rotate the metal disc 5 so that the threaded tube 17 is threaded into the threaded groove 14, and finally, it can also be adjusted so that the shielding wire 11 is exposed outside the notch 13, so that the shielding wire 11 is stably connected to the metal ring 8 and can be connected to the metal tube 7. When all wiring is completed, the adhesive tape 15 can be torn off so that the grounding wire 6 is released to the required length, and then fixed by the adhesive tape 15 and the rubber pad 20, the grounding wire 6 can be limited to facilitate grounding processing, and finally, a good shielding effect can be achieved through good grounding and the metal tube 7, the shielding wire 11, the metal armor layer 4 and the metal shielding layer 10.

[0036] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the utility model to only specific implementation methods. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A multi-shielded inverter loop cable, comprising a conductor (1), characterized in that: An insulating layer (12) is extruded on the outer surface of the conductor (1), a protective layer (2) is provided on the outer surface of the insulating layer (12), a wrapping layer (3) is wrapped around the outer surface of the protective layer (2), a metal shielding layer (10) is woven on the outer surface of the wrapping layer (3), a shielding wire (11) is evenly and fixedly connected between the wrapping layer (3) and the metal shielding layer (10), a metal armor layer (4) is provided on the outer surface of the metal shielding layer (10), an outer sheath (9) is extruded on the outer surface of the metal armor layer (4), a metal tube (7) is sleeved on the outer surface of the outer sheath (9), a metal ring (8) is slidably connected to the outer surface of the metal tube (7), a metal disk (5) is provided above the metal ring (8), a wire receiving groove (16) is provided at the lower end of the outer surface of the metal ring (8), and a grounding wire (6) is fixedly connected inside the wire receiving groove (16).

2. A multi-shielded inverter loop cable according to claim 1, characterized in that: A rubber layer (18) is fixedly connected to the bottom end of the metal disk (5), and the diameter of the rubber layer (18) is equal to the diameter of the metal disk (5).

3. A multi-shielded inverter loop cable according to claim 1, characterized in that: The bottom end of the metal plate (5) is fixedly connected to a threaded tube (17), and a threaded groove (14) is correspondingly provided at the top end of the metal ring (8) below the threaded tube (17).

4. The multi-shielded inverter loop cable according to claim 1, characterized in that: A through hole (19) is provided at the top of the metal plate (5), and the diameter of the through hole (19) is equal to the diameter of the shielding wire (11).

5. The multi-shielded inverter loop cable according to claim 2, characterized in that: A notch (13) is provided on one side of the top end of the metal ring (8), and the bottom end of the notch (13) is flush with the bottom end of the inner part of the thread groove (14).

6. The multi-shielded inverter loop cable according to claim 1, characterized in that: The bottom end of the metal ring (8) is evenly provided with wire holes, and the width of the wire holes is greater than the diameter of the grounding wire (6).

7. A multi-shielded inverter loop cable according to claim 6, characterized in that: An adhesive tape (15) is evenly adhered to the lower end of the outer surface of the metal ring (8), and a rubber pad (20) matching the grounding wire (6) and the wire hole is fixedly connected to the inner side of the adhesive tape (15).

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