An EV fireproof cable and its forming device

Abstract

An EV fireproof cable includes a conductor and an insulating layer. The conductor includes two main power supply lines, a grounding wire, two auxiliary power supply lines, and two signal control lines. There is also a filler inside the insulating layer, and a fireproof layer outside the insulating layer; the insulating layer is a thermoplastic polyester elastomer; the fireproof layer includes dry powder material and a thermoplastic polyurethane elastomer wrapped outside the dry powder material; an EV fireproof cable forming device includes a cable stranding mechanism, a cable coiling mechanism, and a cable winding mechanism. The cable stranding mechanism includes a stranding disc, which includes an inner disc and an outer disc. The outer side of the inner disc is fixedly connected to the outer disc through evenly distributed support frames. There is an annular track on the outer disc, and multiple wire guiding modules are provided on the annular track; an EV fireproof cable forming device of the present invention adopts a wire passing hole with adjustable position and an adjusting device that can adjust the aperture size of the wire passing hole, so as to improve the accuracy of the cable during stranding and be able to precisely strand cables with different apertures.

Description

Technical Field

[0001] The present invention relates to the technical field of electric vehicle cables, and in particular to an EV fireproof cable and a forming device thereof. Background Art

[0002] In electric vehicle systems, in order to improve the overall efficiency of the electric drive system, the voltage level of the power batteries used in electric vehicles is getting higher and higher. With the increase of the voltage of the on-board power batteries, the requirements for the high-voltage electrical safety protection performance of electric vehicles are also increasing. When in use, it is necessary to transmit information and control charging. On the basis of ensuring excellent insulation performance, it must have high aging resistance, oil resistance, and fire resistance, and be able to prevent cable burning caused by temperature rise. Therefore, an EV fireproof cable is needed to solve this problem.

[0003] In addition, during the processing and production of EV cables, a stranding machine is usually required to twist the copper wires into cables. Copper wires of different specifications and numbers are twisted together in a certain arrangement order and twist pitch to become conductors with larger diameters. The twisted conductors are much softer than single copper wires of the same diameter, and the bending performance of the resulting wires is also better. However, the twisting pitch or the wiring pitch is often unqualified during twisting, which requires adjusting the position of the copper wire on the capstan. However, the spacing of the wire holes on the existing capstan is fixed, so when processing ER fire-resistant cables that require higher-precision wiring, different capstans need to be replaced for processing, which is inconvenient to use and the processing effect is poor, resulting in the twisted cables having substandard performance. Therefore, an EV fire-resistant cable forming device is needed to solve this problem. Summary of the Invention

[0004] In view of the above situation, in order to overcome the defects of the prior art, the purpose of the present invention is to provide an EV fireproof cable and a forming device thereof, which effectively solves the above problems.

[0005] The technical solution is that an EV fireproof cable includes a conductor and an insulation layer. The conductor includes two main power lines, a ground line, two auxiliary power lines and two signal control lines. A filler is provided inside the insulation layer, and a fireproof layer is provided outside the insulation layer.

[0006] The insulation layer is thermoplastic polyester elastomer;

[0007] The fireproof layer comprises a dry powder material and a thermoplastic polyurethane elastomer wrapped around the dry powder material.

[0008] An EV fireproof cable forming device includes a cable stranding mechanism, a cable winding mechanism, and a cable take-up mechanism. The cable stranding mechanism includes a stranding disc, which consists of an inner disc and an outer disc. The outer side of the inner disc is fixedly connected to the outer disc through evenly distributed support frames. An annular track is provided on the outer disc, and multiple wire guiding modules are arranged on the annular track. Each wire guiding module is arranged in the area formed between two adjacent support frames. The wire guiding module includes multiple sliders whose two ends are respectively slidably installed in the two annular tracks. A distance adjusting device and a fixing frame are also provided on the sliders, and a hole diameter adjusting mechanism is installed on the fixing frame.

[0009] The hole diameter adjusting mechanism includes a housing installed on the fixing frame. Inside the housing, a first ring body is fixedly installed and a second ring body is rotatably installed. Arc-shaped blades are evenly hinged on the first ring body, and fixing shafts are evenly rotatably installed on the second ring body. The end of the fixing shaft is rotatably connected to the arc-shaped blade. A wire passing hole is formed between the arc-shaped blades, constituting a structure for rotating the second ring body to enlarge or reduce the wire passing hole.

[0010] Furthermore, a fixing ring is fixedly connected to the right end of the housing. A wire passing ring is rotatably installed inside the fixing ring. The wire passing ring is fixedly connected to the second turntable. Multiple first trapezoidal grooves and multiple second trapezoidal grooves are evenly distributed on the inner side of the fixing ring. The directions of the first trapezoidal grooves and the second trapezoidal grooves are opposite. Ball bearings are installed in both the first trapezoidal grooves and the second trapezoidal grooves. A first spring is also provided in the first trapezoidal grooves and the second trapezoidal grooves. One end of the first spring is connected to the ball bearing, and the other end of the first spring is connected to the bottom surface of the first trapezoidal groove or the second trapezoidal groove. A control frame is also provided at the right end of the fixing ring. A fixing plate is slidably installed inside the control frame. First baffles and second baffles are evenly distributed on the fixing plate. The first baffle is located between the ball bearing and the upper surface of the first trapezoidal groove, and the second baffle is located between the ball bearing and the upper surface of the second trapezoidal groove. Multiple tension springs are connected to the right end of the fixing plate, and the ends of the tension springs are fixedly connected to the right end of the control frame.

[0011] Furthermore, multiple balls are rotatably installed on the side of the arc-shaped blade where the wire passing hole is formed.

[0012] Furthermore, multiple balls are rotatably installed on the inner hole surface of the wire passing ring.

[0013] Furthermore, an empty slot is provided at the upper end of the control frame. A shift lever is slidably arranged in the empty slot, and the lower end of the shift lever is fixedly connected to the fixing plate.

[0014] Furthermore, an outer ring sleeve is installed on the outer side of the outer disc through a bracket. An annular guide rail is provided on the outer ring sleeve. A connecting frame is provided on the outer side of the housing. The upper end of the connecting frame is provided with a connecting block slidably installed on the annular guide rail.

[0015] Further, the slider includes two first sliders located in the middle of each wire module, a plurality of second sliders installed on one side of the first slider, and a plurality of third sliders installed on the other side of the first slider. The fixing frame includes a first fixing frame connected to the two first sliders, a plurality of second fixing frames connected to the second sliders, and a plurality of third fixing frames connected to the third sliders. A first adjustable interval is formed between the first fixing frame and the two first sliders, a second adjustable interval is formed between the second fixing frame and the first slider or the second slider, and a third adjustable interval is formed between the third fixing frame and the first slider or the third slider. The distance adjusting device includes a first connecting cylinder, a plurality of second connecting cylinders, and a plurality of third connecting cylinders. Through grooves are provided on the inner sides of the first fixing frame, the second fixing frame, and the third fixing frame. One ends of the first connecting cylinder, the second connecting cylinder, and the third connecting cylinder respectively pass through the through grooves and are connected to the side walls of the first adjustable interval, the second adjustable interval, and the third adjustable interval. The other ends of the first connecting cylinder, the second connecting cylinder, and the third connecting cylinder are hinged to the surface of the inner disc. A first electric push rod, a second electric push rod, and a third electric push rod are respectively inserted into the first connecting cylinder, the second connecting cylinder, and the third connecting cylinder. The outer end of the first electric push rod is hinged with a first connecting shaft and a second connecting shaft, and the end parts of the first connecting shaft and the second connecting shaft are respectively hinged to the two first sliders. The outer end of the second electric push rod is hinged with a third connecting shaft, and the end part of the third connecting shaft is hinged to the second slider. The outer end of the third telescopic rod is hinged with a fourth connecting shaft, and the end part of the fourth connecting shaft is hinged to the third slider.

[0016] Further, the counterclockwise end of the second slider is fixedly connected to the first connecting cylinder or the second connecting cylinder, and the clockwise end of the third slider is fixedly connected to the first connecting cylinder or the third connecting cylinder.

[0017] The beneficial effects of the present invention are as follows: An EV fireproof cable forming device of the present invention adopts a wire passing hole with adjustable position and an adjusting device capable of adjusting the aperture size of the wire passing hole, thereby improving the accuracy during the stranding of the cable, and being able to precisely strand cables with different apertures, improving the stranding production efficiency and applicability of the EV fireproof cable of the present invention, and providing a guarantee for the preparation and use of the cable. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic structural diagram of the cable of the present invention.

[0019] Figure 2 is a front view of the winch of the present invention.

[0020] Figure 3 is the present invention Figure 1 an enlarged view of A in.

[0021] Figure 4 is a schematic structural diagram of the aperture adjusting mechanism of the present invention.

[0022] Figure 5 is a cross-sectional view of the present invention Figure 4 in the B-B direction.

[0023] Figure 6 is a cross-sectional view of the present invention Figure 4 in the C-C direction. Detailed implementation manners

[0024] The following further elaborates on the detailed implementation manners of the present invention with reference to the accompanying drawings. Embodiment

[0025] Given by Figure 1 An EV fire-proof cable includes a conductor 1 and an insulating layer 2. The conductor 1 includes two main power supply lines 3 for transmitting power supply for charging, a grounding wire 4 for providing grounding protection, two auxiliary power supply lines 5 for assisting charging at low voltage, and two signal control lines 6 for transmitting charging status signals. A filler 7 is also provided inside the insulating layer 2, and a fire-proof layer 8 is provided outside the insulating layer 2;

[0026] The insulating layer 2 is a thermoplastic polyester elastomer;

[0027] The fire-proof layer 8 includes a dry powder material and a thermoplastic polyurethane elastomer wrapped outside the dry powder material.

[0028] Embodiment 2: Given by Figures 2 to 6 An EV fire-proof cable forming device includes a cable stranding mechanism, a cable winding mechanism, and a cable take-up mechanism. The cable stranding mechanism includes a stranding disc. The stranding disc includes an inner disc 10 and an outer disc 11. The outer side of the inner disc 10 is fixedly connected to the outer disc 11 through evenly distributed support frames. An annular track 12 is provided on the outer disc 11. The annular track 12 is located between two outer discs 11, and the opening of the annular track 12 faces the inner side in the horizontal direction. A plurality of wire modules 13 are provided on the annular track 12. Each wire module 13 is arranged in the area formed between two adjacent support frames. The wire module 13 includes a plurality of sliders whose two ends are respectively slidably installed in the two annular tracks 12. A distance adjusting device and a fixing frame are also provided on the sliders. The distance between every two adjacent sliders is adjusted through the distance adjusting device, so as to adjust the distance between every two adjacent fixing frames, thereby making the distance between the wire modules 13 in each area adjustable. An aperture adjusting mechanism is installed on the fixing frame, and copper wires with different apertures can just pass through the aperture adjusting mechanism through the aperture adjusting mechanism;

[0029] The aperture adjustment mechanism includes a housing 14 mounted on a fixed frame. Inside the housing 14, a first ring body 15 is fixedly installed and a second ring body 16 is rotatably installed. Arc-shaped blades 17 are evenly hinged on the first ring body 15. Fixed shafts 18 are evenly rotatably installed on the second ring body 16. The end of the fixed shaft 18 is rotatably connected to the arc-shaped blade 17. A wire passing hole 19 is formed between the arc-shaped blades 17, constituting a structure for rotating the second ring body 16 to enlarge or reduce the wire passing hole 19.

[0030] A fixed ring 20 is fixedly connected to the right end of the housing 14. A wire passing ring 21 is rotatably installed inside the fixed ring 20. The wire passing ring 21 is fixedly connected to the second turntable. A plurality of first trapezoidal grooves 22 and a plurality of second trapezoidal grooves 23 are evenly distributed on the inner side of the fixed ring 20. The directions of the first trapezoidal grooves 22 and the second trapezoidal grooves 23 are opposite. Ball bearings 24 are rollingly installed in both the first trapezoidal grooves 22 and the second trapezoidal grooves 23. A first spring 25 is also provided in the first trapezoidal grooves 22 and the second trapezoidal grooves 23. One end of the first spring 25 is connected to the ball bearing 24, and the other end of the first spring 25 is connected to the lower bottom surface of the first trapezoidal groove 22 or the second trapezoidal groove 23, so that the ball bearing 24 is elastically forced by the first spring 25 and abuts against the surfaces of the first trapezoidal groove 22 or the second trapezoidal groove 23 and the screw rod, making the screw rod unable to rotate regardless of whether it is subjected to a clockwise torque or a counterclockwise torque. A control frame 26 is also provided at the right end of the fixed ring 20. A fixing plate 27 is slidably installed inside the control frame 26. First baffles 28 and second baffles 29 are evenly distributed on the fixing plate 27. The first baffle 28 is located between the ball bearing 24 and the upper bottom surface of the first trapezoidal groove 22, and the second baffle 29 is located between the ball bearing 24 and the upper bottom surface of the second trapezoidal groove 23. When the first baffle 28 and the second baffle 29 respectively extend into the first trapezoidal groove 22 and the second trapezoidal groove 23, the first baffle 28 and the second baffle push open the ball bearing 24, so that the ball bearing 24 does not simultaneously contact the inclined surface of the first trapezoidal groove 22 or the second trapezoidal groove 23 and the lower end of the screw rod, so that when the screw rod is rotated, the screw rod will not be subjected to the friction force caused by the ball bearing 24. The right end of the fixing plate 27 is connected to a plurality of tension springs 30, and the ends of the tension springs 30 are fixedly connected to the right end of the control frame 26.

[0031] A plurality of balls are rollingly installed on the side of the arc-shaped blade 17 where the wire passing hole 19 is formed.

[0032] A plurality of balls are rollingly installed on the inner hole surface of the wire passing ring 21.

[0033] An empty groove 31 is provided at the upper end of the control frame 26. A dial rod 32 is slidably arranged in the empty groove 31. The lower end of the dial rod 32 is fixedly connected to the fixing plate 27.

[0034] An outer ring sleeve 33 is also installed on the outer side of the outer disk through a bracket. An annular guide rail is provided on the outer ring sleeve 33. A connecting frame 34 is provided on the outer side of the housing 14. The upper end of the connecting frame 34 is provided with a connecting block slidably installed on the annular guide rail.

[0035] The slider includes two first sliders 35 located in the middle of each wire module, a plurality of second sliders 36 installed on one side of the first slider 35, and a plurality of third sliders 37 installed on the other side of the first slider 35. The first slider 35, the second slider 36, and the third slider 37 have the same structure. The fixing frame includes a first fixing frame 38 connected to the two first sliders 35, a plurality of second fixing frames 39 connected to the second sliders 36, and a plurality of third fixing frames 40 connected to the third sliders 37. The first fixing frame 38, the second fixing frame 39, and the third fixing frame 40 have the same structure. A first adjustable interval 41 is formed between the first fixing frame 38 and the two first sliders 35. A second adjustable interval 42 is formed between the second fixing frame 39 and the first slider 35 or the second slider 36. A third adjustable interval 43 is formed between the third fixing frame 40 and the first slider 35 or the third slider 37, facilitating the distance adjusting device to extend into the first adjustable interval 41, the second adjustable interval 42, and the third adjustable interval 43 through the through slot 47. The distance adjusting device includes a first connecting cylinder 44, a plurality of second connecting cylinders 45, and a plurality of third connecting cylinders 46. The first connecting cylinder 44, the second connecting cylinder 45, and the third connecting cylinder 46 have the same structure. Through slots 47 are provided on the inner sides of the first fixing frame 38, the second fixing frame 39, and the third fixing frame 40. One ends of the first connecting cylinder 44, the second connecting cylinder 45, and the third connecting cylinder 46 respectively pass through the through slots 47 and are connected to the side walls of the first adjustable interval 41, the second adjustable interval 42, and the third adjustable interval 43. The other ends of the first connecting cylinder 44, the second connecting cylinder 45, and the third connecting cylinder 46 are hinged to the surface of the inner disk 10. A first electric push rod 48, a second electric push rod 49, and a third electric push rod 50 are respectively inserted into the first connecting cylinder 44, the second connecting cylinder 45, and the third connecting cylinder 46. Empty slots 31 are provided at the outer ends of the first connecting cylinder 44, the second connecting cylinder 45, and the third connecting cylinder 46. The outer end of the first electric push rod 48 is hinged with a first connecting shaft 51 and a second connecting shaft 52. The ends of the first connecting shaft 51 and the second connecting shaft 52 pass through the empty slots 31 and are respectively hinged to the two first sliders 35, so that the expansion and contraction of the first electric push rod 48 can drive the two first sliders 35 to separate or converge through the first connecting shaft 51 and the second connecting shaft 52. The outer end of the second electric push rod 49 is hinged with a third connecting shaft 53. The end of the third connecting shaft 53 passes through the empty slot 31 and is hinged to the second slider 36. The outer end of the third telescopic rod is hinged with a fourth connecting shaft 54. The end of the fourth connecting shaft 54 passes through the empty slot 31 and is hinged to the third slider 37, so that the expansion and contraction of the second electric push rod 49 and the third electric push rod 50 can respectively drive the second slider 36 and the third slider 37 to move.

[0036] One end of the second slider 36 in the counterclockwise direction is fixedly connected to the first connecting cylinder 44 or the second connecting cylinder 45, and one end of the third slider 37 in the clockwise direction is fixedly connected to the first connecting cylinder 44 or the third connecting cylinder 46.

[0037] When the molding device of the present invention is used to manufacture the EV cable, the distance between each aperture adjusting mechanism is controlled by the first electric push rod 48, the second electric push rod 49 and the third electric push rod 50, and then the distance between the wire passing holes 19 is accurately adjusted by rotating the second turntable, so as to determine the laying pitch and the stranding pitch between each copper wire or cable at a specific rotation speed. The copper wires are passed through the wire passing holes 19 at specific positions, and after being shaped by the cable coiling mechanism, they are coiled and wound in the cable take-up mechanism.

[0038] The beneficial effects of the present invention are as follows: An EV fire-proof cable molding device of the present invention adopts wire passing holes with adjustable positions and an adjusting device capable of adjusting the aperture size of the wire passing holes, so as to improve the accuracy during the stranding of the cable, and can accurately strand cables with different apertures, improving the stranding production efficiency and applicability of the EV fire-proof cable of the present invention, and providing a guarantee for the preparation and use of the cable.

[0039] The above specific embodiments / Examples are specific specific embodiments of the present invention and are used to illustrate the concept of the present invention. They are all explanatory and exemplary, and should not be construed as limiting the embodiments of the present invention and the scope of the present invention. Except for the embodiments described herein, those skilled in the art can also adopt other obvious technical solutions based on the content disclosed in the claims and the specification of this application. These technical solutions include technical solutions that make any obvious substitutions and modifications to the embodiments described herein, and are all within the protection scope of the present invention. In particular, as long as there is no structural conflict, the technical features mentioned in each embodiment can be combined in any way. The present invention is not limited to the specific embodiments disclosed in the text, but includes all technical solutions falling within the scope of the claims.

Claims

1. An EV fire-resistant cable, characterized in that, It includes a conductor (1) and an insulating layer (2). The conductor (1) includes two main power supply lines (3), a ground wire (4), two auxiliary power supply lines (5), and two signal control lines (6). There is also a filler (7) inside the insulating layer (2), and a fireproof layer (8) outside the insulating layer (2). The insulating layer (2) is a thermoplastic polyester elastomer. The fireproof layer (8) includes dry powder material and a thermoplastic polyurethane elastomer wrapped outside the dry powder material. This fireproof cable forming device includes a cable stranding mechanism, a cable winding mechanism, and a cable take-up mechanism. The cable stranding mechanism includes a stranding disc, and the stranding disc includes an inner disc (10) and an outer disc (11). The outer side of the inner disc (10) is fixedly connected to the outer disc (11) through evenly distributed support frames. An annular track (12) is provided on the outer disc (11), and a plurality of wire modules (13) are provided on the annular track (12). Each wire module (13) is arranged in the area formed between two adjacent support frames. The wire module (13) includes a plurality of sliders slidably installed at both ends in two annular tracks (12). A distance adjusting device and a fixing frame are also provided on the sliders, and a hole diameter adjusting mechanism is installed on the fixing frame. The hole diameter adjusting mechanism includes a housing (14) installed on the fixing frame. A first ring body (15) is fixedly installed inside the housing (14), and a second ring body (16) is rotatably installed. Arc-shaped blades (17) are evenly hinged on the first ring body (15). Fixed shafts (18) are evenly rotatably installed on the second ring body (16). The end of the fixed shaft (18) is rotatably connected to the arc-shaped blade (17). A wire passing hole (19) is formed between the arc-shaped blades (17), constituting a structure for rotating the second ring body (16) to enlarge or reduce the wire passing hole (19). The slider includes two first sliders (35) located in the middle of each wire module, a plurality of second sliders (36) mounted on one side of the first slider (35), and a plurality of third sliders (37) mounted on the other side of the first slider (35). The fixing frame includes a first fixing frame (38) connected to the two first sliders (35), a plurality of second fixing frames (39) connected to the second sliders (36), and a plurality of third fixing frames (40) connected to the third sliders (37). A first adjustable interval (41) is formed between the first fixing frame (38) and the two first sliders (35), a second adjustable interval (42) is formed between the second fixing frame (39) and the first slider (35) or the second slider (36), and a third adjustable interval (43) is formed between the third fixing frame (40) and the first slider (35) or the third slider (37). The distance adjusting device includes a first connecting cylinder (44), a plurality of second connecting cylinders (45), and a plurality of third connecting cylinders (46). Through grooves (47) are provided on the inner sides of the first fixing frame (38), the second fixing frame (39), and the third fixing frame (40). One ends of the first connecting cylinder (44), the second connecting cylinder (45), and the third connecting cylinder (46) respectively pass through the through grooves (47) and are connected to the side walls of the first adjustable interval (41), the second adjustable interval (42), and the third adjustable interval (43). The other ends of the first connecting cylinder (44), the second connecting cylinder (45), and the third connecting cylinder (46) are hinged to the surface of the inner disc (10). First electric push rods (48), second electric push rods (49), and third electric push rods (50) are respectively inserted into the first connecting cylinder (44), the second connecting cylinder (45), and the third connecting cylinder (46). The outer end of the first electric push rod (48) is hinged with a first connecting shaft (51) and a second connecting shaft (52), and the end parts of the first connecting shaft (51) and the second connecting shaft (52) are respectively hinged to the two first sliders (35). The outer end of the second electric push rod (49) is hinged with a third connecting shaft (53), and the end part of the third connecting shaft (53) is hinged to the second slider (36). The outer end of the third telescopic rod is hinged with a fourth connecting shaft (54), and the end part of the fourth connecting shaft (54) is hinged to the third slider (37); A fixed ring (20) is fixedly connected to the right end of the described housing (14). A wire-passing ring (21) is rotatably installed within the fixed ring (20). The wire-passing ring (21) is fixedly connected to the second turntable. A plurality of first trapezoidal grooves (22) and a plurality of second trapezoidal grooves (23) are evenly distributed on the inner side of the fixed ring (20). The directions of the first trapezoidal grooves (22) and the second trapezoidal grooves (23) are opposite. Ball bearings (24) are rollingly installed within the first trapezoidal grooves (22) and the second trapezoidal grooves (23). A first spring (25) is further provided within the first trapezoidal grooves (22) and the second trapezoidal grooves (23). One end of the first spring (25) is connected to the ball bearing (24), and the other end of the first spring (25) is connected to the lower bottom surface of the first trapezoidal groove (22) or the second trapezoidal groove (23). A control frame (26) is further provided at the right end of the fixed ring (20). A fixed plate (27) is slidably installed within the control frame (26). A plurality of first baffles (28) and second baffles (29) are evenly distributed on the fixed plate (27). The first baffle (28) is located between the ball bearing (24) and the upper bottom surface of the first trapezoidal groove (22), and the second baffle (29) is located between the ball bearing (24) and the upper bottom surface of the second trapezoidal groove (23). A plurality of tension springs (30) are connected to the right end of the fixed plate (27), and the ends of the tension springs (30) are fixedly connected to the right end of the control frame (26). The counterclockwise end of the described second slider (36) is fixedly connected to the first connecting cylinder (44) or the second connecting cylinder (45). The clockwise end of the third slider (37) is fixedly connected to the first connecting cylinder (44) or the third connecting cylinder (46).

2. The EV fireproof cable according to claim 1, characterized in that, A plurality of balls are rollingly installed on the side of the described arc-shaped blade (17) that forms the wire-passing hole (19).

3. An EV fireproof cable according to claim 1, wherein, A plurality of balls are rollingly installed on the inner hole surface of the described wire-passing ring (21).

4. The EV fire-proof cable according to claim 1, characterized in that, An empty slot (31) is provided at the upper end of the described control frame (26). A shift lever (32) is slidably arranged within the empty slot (31). The lower end of the shift lever (32) is fixedly connected to the fixed plate (27).

5. An EV fireproof cable according to claim 1, characterized in that, An outer ring sleeve (33) is further installed outside the outer disk through a bracket. A circular guide rail is provided on the outer ring sleeve (33). A connecting frame (34) is provided outside the housing (14). A connecting block that is slidably installed on the circular guide rail is provided at the upper end of the connecting frame (34).

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