CN212161387U

CN212161387U - Aluminum core pressing conductor low-voltage fire-resistant power cable

Info

Publication number: CN212161387U
Application number: CN202021368990.1U
Authority: CN
Inventors: 程阳; 程永胜; 鲍时福; 张安林
Original assignee: Anhui Carenano Cable Technology Co ltd
Current assignee: Anhui Carenano Cable Technology Co ltd
Priority date: 2020-07-14
Filing date: 2020-07-14
Publication date: 2020-12-15
Anticipated expiration: 2030-07-14

Abstract

The utility model relates to the technical field of power cable application, in particular to an aluminum core pressing conductor low-voltage fire-resistant power cable, which comprises a supporting seat, a fixing nail, a cable body, a touch mechanism and an interference mechanism; the bottom of the supporting seat is fixedly connected with a fixing nail; a through hole is formed in the side wall of the supporting seat; the cable body is arranged in the through hole; the touch mechanism is arranged at the top of the supporting seat; the interference mechanism is arranged on the side wall of the inner cavity of the supporting seat; the touch mechanism comprises an elastic block, a first spring, a first push plate, a first push rod, a first fixed block, a first connecting rod and a touch plate; a through hole is formed in the side wall of the inner cavity of the supporting seat; the elastic blocks are arranged at the bottom of the inner cavity of the supporting seat and penetrate through the through holes; can gnaw at the animal or just arrive the cable time through setting up touching mechanism, further awaken up interference mechanism, reach the effect to the animal expulsion.

Description

Aluminum core pressing conductor low-voltage fire-resistant power cable

Technical Field

The utility model relates to a power cable uses technical field, specifically is an aluminium core sticiss fire-resistant power cable of conductor low pressure.

Background

The power cable is used for transmitting and distributing electric energy, and is commonly used for urban underground power grids, power station leading-out lines, power supply inside industrial and mining enterprises and power transmission lines under river-crossing seawater. In the power lines, the cable is increasing in specific gravity. Power cables are cable products used in the trunk lines of power systems to transmit and distribute high power electrical energy, including various voltage classes, 1-500KV and above, and various insulated power cables.

The existing power cable can not be effectively protected in certain areas, for example, the cable in the underground is often bitten by animals, the effect of driving away the animals can not be achieved, and the power cable is damaged by the guide post.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an aluminium core sticiss fire-resistant power cable of conductor low pressure to solve some areas of current power cable and can't obtain effectual protection, often suffer gnawing of animal if cable in the underground, can not play the effect of hurling away, guide pillar power cable's destruction to the animal.

In order to achieve the above object, the utility model provides a following technical scheme:

a low-voltage fire-resistant power cable with an aluminum core pressing conductor comprises a supporting seat, a fixing nail, a cable body, a touch mechanism and an interference mechanism; the bottom of the supporting seat is fixedly connected with a fixing nail; a through hole is formed in the side wall of the supporting seat; the cable body is arranged in the through hole; the touch mechanism is arranged at the top of the supporting seat; the interference mechanism is arranged on the side wall of the inner cavity of the supporting seat; the touch mechanism comprises an elastic block, a first spring, a first push plate, a first push rod, a first fixed block, a first connecting rod and a touch plate; a through hole is formed in the side wall of the inner cavity of the supporting seat; the elastic blocks are arranged at the bottom of the inner cavity of the supporting seat and penetrate through the through holes; the bottoms of the first springs are fixedly connected to the bottom of the inner cavity of the supporting seat; the first push plate is fixedly connected to the top of the first spring; one end of each first connecting rod is hinged with the elastic block, and the other end of each first connecting rod is hinged with the bottom of the first push plate through a first fixing block; the first push rods are fixedly connected to the top of the first push plate; the bottom of the touch plate is fixedly connected to the top of the first push rod.

Further, the interference mechanism comprises a sound production part and an air injection part; the sounding component comprises a first hinge rod, a second fixed block, a connecting plate, a pulley, a rope, a bearing plate, a knocking component and a cover body, wherein the first hinge rod is hinged with the side wall of the elastic block; the second hinge rod is hinged with the side wall of the inner cavity of the supporting seat through a second fixed block; the connecting plate is arranged at the hinge joint of the first hinge rod and the second hinge rod; a bearing plate is fixedly connected to the side wall of the inner cavity of the supporting seat; the pulley is fixedly connected to the top of the bearing plate; the knocking component is fixedly connected to the top of the bearing plate; one end of the rope is connected with the top of the connecting plate, and the other end of the rope is connected with the side wall of the knocking component; the cover body is fixedly connected to the top of the bearing plate; the air injection part is arranged on the side wall of the supporting seat inner cavity on one side of the touch mechanism.

Further, the air injection part comprises a second connecting rod, a second push plate, a sliding block, a second spring, an air bag, a fixing plate and an air pipe; one end of the second connecting rod is fixedly connected to the side wall of the elastic block; the fixed plate is fixedly connected to the side wall of the inner cavity of the supporting seat; the bottom of the fixed plate is provided with a first sliding chute; a second sliding chute is formed in the side wall of the inner cavity of the supporting seat; the second push plate is connected with the first sliding groove and the second sliding groove in a sliding mode through the sliding block; the air bag is arranged at the bottom of the fixing plate; the top of the fixing plate is provided with a through hole; the air pipe penetrates through the through hole and is communicated with the air bag; the supporting seat top is provided with a plurality of ventholes.

Further, the knocking component comprises a third fixed block, a knocking rod, a torsion spring, a knocking block and a knocking plate; the third fixing block is fixedly connected to the top of the bearing plate; the top of the third fixed block is provided with a groove, and the knocking rod is arranged on the side wall of the groove; the torsion spring is arranged on the side wall of the knocking rod; the knocking block is fixedly connected to the side wall of the knocking rod; the knocking plate is fixedly connected to the side wall of the inner cavity of the cover body.

Further, the cable body comprises an aluminum core, an inorganic mineral filling layer, an irradiation cross-linked polyethylene insulating layer, an inorganic fiber wrapping tape heat-insulating layer, a flame-retardant sponge filling layer, a longitudinal water-blocking buffer layer, a metal armor layer and a halogen-free low-smoke flame-retardant outer sheath; the irradiation crosslinked polyethylene insulating layer wraps the aluminum core; the inorganic fiber wrapping tape heat insulation layer wraps the irradiation crosslinked polyethylene insulation layer; the flame-retardant sponge filling layer wraps the inorganic fiber wrapping tape heat insulation layer; the longitudinal water-blocking buffer layer is wrapped with the flame-retardant sponge filling layer; the metal armor layer wraps the longitudinal water-blocking buffer layer; the metal armor layer is wrapped by the halogen-free low-smoke flame-retardant outer sheath; an inorganic mineral filling layer is arranged between the irradiation crosslinked polyethylene insulating layer and the inorganic fiber wrapping tape heat-insulating layer.

Further, the elastic block comprises a shell, a third spring and a pushing block; the third spring is fixedly connected to the side wall of the inner cavity of the shell; the pushing block is arranged at the end part of the third spring, and the side wall of the pushing block is hinged with the first connecting rod.

The utility model has the advantages that:

the utility model discloses in, can gnaw at the animal through setting up touching mechanism or just arrive the cable the time, further awaken the interference mechanism up, reach the effect to the animal expulsion.

Drawings

Fig. 1 is a schematic view of an overall structure of a low-voltage fire-resistant power cable with an aluminum core pressed on a conductor in the present invention;

fig. 2 is a schematic cross-sectional structure view of a low-voltage fire-resistant power cable with an aluminum core pressed on a conductor in the present invention;

fig. 3 is a schematic cross-sectional structure view of a low-voltage fire-resistant power cable with an aluminum core pressed on a conductor in the present invention;

FIG. 4 is a view showing the structure of the area A in FIG. 2;

FIG. 5 is a view showing the structure of the area B in FIG. 2;

FIG. 6 is a view showing the structure of the area C in FIG. 2;

illustration of the drawings: 1. a supporting seat; 2. fixing nails; 3. a cable body; 4. a touch mechanism; 5. an interference mechanism; 41. an elastic block; 42. a first spring; 43. a first push plate; 44. a first push rod; 45. a first fixed block; 46. a first connecting rod; 47. a touch pad; 51. a sound emitting part; 52. a gas injection part; 511. a first hinge lever; 512. a second hinge lever; 513. a second fixed block; 514. a connecting plate; 515. a pulley; 516. a rope; 517. a carrier plate; 518. a knocking component; 519. a cover body; 521. a second connecting rod; 522. a second push plate; 523. a slider; 524. a second spring; 525. an air bag; 526. a fixing plate; 527. an air tube; 5181. a third fixed block; 5182. a knock bar; 5183. a torsion spring; 5184. knocking the block; 5185. knocking the plate; 31. an aluminum core; 32. an inorganic mineral filler layer; 33. irradiating the crosslinked polyethylene insulating layer; 34. an inorganic fiber belt heat insulation layer; 35. a flame-retardant sponge filling layer; 36. a longitudinal water-blocking buffer layer; 37. a metal armor layer; 38. a halogen-free low-smoke flame-retardant outer sheath; 411. a housing; 412. a third spring; 413. a pushing block; 5261. a first chute; 11. a second chute; 12. and an air outlet.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-6, an aluminum core pressing conductor low-voltage fire-resistant power cable comprises a supporting seat 1, a fixing nail 2, a cable body 3, a touch mechanism 4 and an interference mechanism 5; the bottom of the supporting seat 1 is fixedly connected with a fixing nail 2; a through hole is formed in the side wall of the supporting seat 1; the cable body 3 is arranged in the through hole; the touch mechanism 4 is arranged at the top of the supporting seat 1; the interference mechanism 5 is arranged on the side wall of the inner cavity of the supporting seat 1; the touch mechanism 4 comprises an elastic block 41, a first spring 42, a first push plate 43, a first push rod 44, a first fixed block 45, a first connecting rod 46 and a touch plate 47; a through hole is formed in the side wall of the inner cavity of the supporting seat 1; the elastic blocks 41 are arranged at the bottom of the inner cavity of the supporting seat 1, and the elastic blocks 41 penetrate through the through holes; the bottoms of the first springs 42 are fixedly connected to the bottom of the inner cavity of the supporting seat 1; the first push plate 43 is fixedly connected to the top of the first spring 42; one end of each of the first connecting rods 46 is hinged to the elastic block 41, and the other end is hinged to the bottom of the first push plate 43 through a first fixing block 45; a plurality of the first push rods 44 are fixedly connected to the top of the first push plate 43; the bottom of the touch plate 47 is fixedly connected to the top of the first push rod 44; in operation, when a living being touches the touch panel 47 of the touch mechanism 4, the first push rod 44 fixedly connected to the touch panel 47 pushes the first push plate 43, the bottom of the first push plate 43 is provided with the first spring 42 and the first connecting rod 46, the first spring 42 is compressed by the movement of the first push plate 43, the first connecting rod 46 drives the elastic block 41 to move, the elastic block 41 moves to drive the sound-generating component 51 of the interference mechanism 5, at the same time, the knocking sound is generated, the air-spraying component 52 is arranged on one side of the touch mechanism 4, the air-spraying component 52 is driven by the elastic block 41, the irritant gas is arranged in the air-spraying component 52, the repelling effect can be exerted on the living being, and when the pressure on the touch panel 47 disappears, the resetting is realized under the action of the third spring 412 in the first spring 42 and the elastic block 41.

As an embodiment of the present invention, the interference mechanism 5 includes a sound generating component 51 and an air injection component 52; the sound production part 51 comprises a first hinge rod 511, a second hinge rod 512, a second fixed block 513, a connecting plate 514, a pulley 515, a rope 516, a bearing plate 517, a knocking component 518 and a cover body 519, wherein the first hinge rod 511 is hinged with the side wall of the elastic block 41; the second hinge rod 512 is hinged with the side wall of the inner cavity of the supporting seat 1 through a second fixed block 513; the connecting plate 514 is arranged at the hinge joint of the first hinge rod 511 and the second hinge rod 512; a bearing plate 517 is fixedly connected to the side wall of the inner cavity of the supporting seat 1; the pulley 515 is fixedly connected to the top of the bearing plate 517; the knocking component 518 is fixedly connected to the top of the bearing plate 517; one end of the rope 516 is connected with the top of the connecting plate 514, and the other end of the rope is connected with the side wall of the knocking component 518; the cover 519 is fixedly connected to the top of the bearing plate 517; the air injection part 52 is arranged on the side wall of the inner cavity of the supporting seat 1 at one side of the touch mechanism 4; when the animal knocking device works, the first hinge rod 511 is fixedly connected to the side wall of the elastic block 41, the first hinge rod 511 is driven by the elastic block 41 to move, the connecting plate 514 is pushed under the cooperation of the second hinge rod 512, the top of the connecting plate 514 is connected with the rope 516, the other end of the elastic block is connected with the side wall of the knocking rod 5182, the knocking rod 5182 is under the action of the torsion spring 5183, at the moment, the knocking rod is in a tightened state, when the connecting plate 514 moves upwards, the elastic rod is loosened, the binding effect on the knocking rod 5182 is eliminated, the knocking block 5184 on the side wall of the knocking rod 5182 can knock the knocking plate 5185 on the side wall of the inner cavity of the cover body 519, sound is produced, and the animal repelling effect is achieved.

As an embodiment of the present invention, the air injection part 52 includes a second connecting rod 521, a second push plate 522, a slider 523, a second spring 524, an air bag 525, a fixing plate 526, and an air tube 527; one end of the second connecting rod 521 is fixedly connected to the side wall of the elastic block 41; the fixing plate 526 is fixedly connected to the side wall of the inner cavity of the supporting seat 1; the bottom of the fixing plate 526 is provided with a first chute 5261; a second sliding chute 11 is formed in the side wall of the inner cavity of the supporting seat 1; the second push plate 522 is slidably connected with the first runner 5261 and the second runner 11 through a slider 523; the air bag 525 is arranged at the bottom of the fixing plate 526; the top of the fixing plate 526 is provided with a through hole; the air pipe 527 penetrates through the through hole to be communicated with the air bag 525; a plurality of air outlet holes 12 are formed in the top of the supporting seat 1; the during operation receives the elastic block 41 of thrust, can push the second push pedal 522 that connects with second connecting rod 521, because second push pedal 522 both ends rigid coupling has slider 523, and with first spout 5261 and 11 sliding fit of second spout, can extrude inside gasbag 525 this moment, at the inside pungent gas that has that sets up of gasbag 525, this gas passes through trachea 527 and exports a plurality of ventholes 12 in top, the effect of amazing animal has been reached, further realized the expulsion to the animal.

As an embodiment of the present invention, the knocking assembly 518 includes a third fixing block 5181, a knocking rod 5182, a torsion spring 5183, a knocking block 5184, and a knocking plate 5185; the third fixing block 5181 is fixedly connected to the top of the bearing plate 517; a groove is formed in the top of the third fixing block 5181, and the knocking rod 5182 is arranged on the side wall of the groove; the torsion spring 5183 is arranged on the side wall of the knocking rod 5182; the knocking block 5184 is fixedly connected to the side wall of the knocking rod 5182; the knocking plate 5185 is fixedly connected to the side wall of the inner cavity of the cover body 519; during operation, be connected with rope 516 at the top of connecting plate 514, because flexible other end is connected with the lateral wall of knocking the pole 5182, knock the pole 5182 under the effect of torsional spring 5183, be the state of tightening this moment, when connecting plate 514 upward movement, can let flexible lax, the constraint effect to knocking the pole 5182 just has lacked, knock block 5184 on the pole 5182 lateral wall and can knock the board 5185 that knocks on the cover 519 inner chamber lateral wall, make a sound, reached the effect to the animal expulsion.

As an embodiment of the present invention, the cable body 3 includes an aluminum core 31, an inorganic mineral filling layer 32, an irradiation crosslinked polyethylene insulating layer 33, an inorganic fiber tape insulating layer 34, a flame-retardant sponge filling layer 35, a longitudinal water-blocking buffer layer 36, a metal armor layer 37, and a halogen-free low-smoke flame-retardant outer sheath 38; the irradiation crosslinked polyethylene insulating layer 33 wraps the aluminum core 31; the inorganic fiber tape heat insulation layer 34 wraps the irradiation crosslinked polyethylene insulation layer 33; the flame-retardant sponge filling layer 35 wraps the inorganic fiber wrapping tape heat insulation layer 34; the longitudinal water-blocking buffer layer 36 wraps the flame-retardant sponge filling layer 35; the metal armor layer 37 wraps the longitudinal water-blocking buffer layer 36; the halogen-free low-smoke flame-retardant outer sheath 38 wraps the metal armor layer 37; an inorganic mineral filling layer 32 is arranged between the irradiation crosslinked polyethylene insulating layer 33 and the inorganic fiber wrapping tape heat-insulating layer 34; during operation, through setting up irradiation crosslinked polyethylene insulating layer 33, when playing good insulating effect, the heat resistance of polymer can be strengthened to irradiation crosslinking technique, through setting up inorganic fiber band insulating layer 34, fire-retardant sponge filling layer 35, can strengthen the back-fire relief heat resistance of cable, through setting up vertical buffer layer 36 that blocks water, but inside mode outside water gets into the cable, through there being no halogen-free low smoke flame retardant oversheath 38, can not give off the injurant when the cable receives the burning.

As an embodiment of the present invention, the elastic block 41 includes a housing 411, a third spring 412 and a pushing block 413; the third spring 412 is fixedly connected to the side wall of the inner cavity of the housing 411; the pushing block 413 is arranged at the end part of the third spring 412, and the side wall is hinged with the first connecting rod 46; in operation, when no pressure is applied to the touch pad 47, the third spring 412 pushes the block 413, the push block 413 pushes the first connecting plate 514, and the touch pad 47 fixedly connected to the first connecting plate 514 through the first connecting rod 46 realizes the reset function.

The working principle is as follows: when a living being touches the touch pad 47 of the touch mechanism 4, the first push rod 44 fixedly connected with the touch pad 47 pushes the first push plate 43, the first spring 42 and the first connecting rod 46 are arranged at the bottom of the first push plate 43, the first spring 42 is compressed by the movement of the first push plate 43, the elastic block 41 is driven by the first connecting rod 46, the sound-producing component 51 of the interference mechanism 5 is driven by the movement of the elastic block 41, the first hinge rod 511 is fixedly connected to the side wall of the elastic block 41, the first hinge rod 511 is driven by the movement of the elastic block 41, the connecting plate 514 is pushed by the cooperation of the second hinge rod 512, the top of the connecting plate 514 is connected with the rope 516, the other end of the extension is connected with the side wall of the knock rod 5182, the knock rod 5182 is in a tight state under the action of the torsion spring 5183, when the connecting plate 514 moves upwards, the extension is loosened, the restraint effect on the knock rod 5182 is eliminated, the knocking block 5184 on the side wall of the knocking rod 5182 can knock the knocking plate 5185 on the side wall of the inner cavity of the cover body 519 to generate sound, so that the animal expelling effect is achieved, meanwhile, the air injection part 52 is arranged on one side of the touch mechanism 4, the elastic block 41 which is subjected to thrust is used for pushing the second push plate 522 which is connected with the second connecting rod 521, the slide blocks 523 are fixedly connected to two ends of the second push plate 522 and are in sliding fit with the first chute 5261 and the second chute 11, the inner air bag 525 can be extruded at the moment, the stimulating gas is arranged in the air bag 525 and is output to a plurality of air outlet holes 12 at the top through the air pipe 527, the animal stimulating effect is achieved, the animal expelling is further achieved, after the pressure on the touch plate 47 disappears, when no pressure is applied to the touch plate 47, the third spring 412 can push the block 413, the pushing block 413 can push the first connecting rod 46, and under the combined action of the first springs 42, the touch panel 47 implements a reset function.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. The low-voltage fire-resistant power cable with the aluminum core pressed on the conductor is characterized by comprising a supporting seat (1), a fixing nail (2), a cable body (3), a touch mechanism (4) and an interference mechanism (5); the bottom of the supporting seat (1) is fixedly connected with a fixing nail (2); a through hole is formed in the side wall of the supporting seat (1) in a penetrating way; the cable body (3) is arranged in the through hole; the touch mechanism (4) is arranged at the top of the supporting seat (1); the interference mechanism (5) is arranged on the side wall of the inner cavity of the supporting seat (1); the touch mechanism (4) comprises an elastic block (41), a first spring (42), a first push plate (43), a first push rod (44), a first fixed block (45), a first connecting rod (46) and a touch plate (47); a through hole is formed in the side wall of the inner cavity of the supporting seat (1); the plurality of elastic blocks (41) are arranged at the bottom of the inner cavity of the supporting seat (1) and penetrate through the through holes; the bottoms of the first springs (42) are fixedly connected to the bottom of the inner cavity of the supporting seat (1); the first push plate (43) is fixedly connected to the top of the first spring (42); one end of each of the first connecting rods (46) is hinged with the elastic block (41), and the other end of each of the first connecting rods is hinged with the bottom of the first push plate (43) through a first fixing block (45); the first push rods (44) are fixedly connected to the top of the first push plate (43); the bottom of the touch plate (47) is fixedly connected with the top of the first push rod (44).

2. An aluminium core compacted conductor low voltage fire resistant power cable according to claim 1, characterized in that the interference mechanism (5) comprises a sound emitting part (51) and a jet part (52); the sound production component (51) comprises a first hinge rod (511), a second hinge rod (512), a second fixed block (513), a connecting plate (514), a pulley (515), a rope (516), a bearing plate (517), a knocking component (518) and a cover body (519), wherein the first hinge rod (511) is hinged with the side wall of the elastic block (41); the second hinge rod (512) is hinged with the side wall of the inner cavity of the supporting seat (1) through a second fixing block (513); the connecting plate (514) is arranged at the hinge joint of the first hinge rod (511) and the second hinge rod (512); a bearing plate (517) is fixedly connected to the side wall of the inner cavity of the supporting seat (1); the pulley (515) is fixedly connected to the top of the bearing plate (517); the knocking component (518) is fixedly connected to the top of the bearing plate (517); one end of the rope (516) is connected with the top of the connecting plate (514), and the other end of the rope is connected with the side wall of the knocking component (518); the cover body (519) is fixedly connected to the top of the bearing plate (517); the air injection part (52) is arranged on the side wall of the inner cavity of the supporting seat (1) on one side of the touch mechanism (4).

3. The low-voltage fire-resistant power cable with the aluminum core pressed against the conductor is characterized in that the air injection part (52) comprises a second connecting rod (521), a second push plate (522), a sliding block (523), a second spring (524), an air bag (525), a fixed plate (526) and an air pipe (527); one end of the second connecting rod (521) is fixedly connected to the side wall of the elastic block (41); the fixed plate (526) is fixedly connected to the side wall of the inner cavity of the supporting seat (1); the bottom of the fixed plate (526) is provided with a first sliding chute (5261); a second sliding chute (11) is formed in the side wall of the inner cavity of the supporting seat (1); the second push plate (522) is connected with the first sliding groove (5261) and the second sliding groove (11) in a sliding mode through a sliding block (523); the air bag (525) is arranged at the bottom of the fixing plate (526); the top of the fixing plate (526) is provided with a through hole; the air pipe (527) penetrates through the through hole and is communicated with the air bag (525); the top of the supporting seat (1) is provided with a plurality of air outlet holes (12).

4. The aluminum core compacted conductor low voltage fire resistant power cable as claimed in claim 2, wherein the knocking assembly (518) comprises a third fixing block (5181), a knocking rod (5182), a torsion spring (5183), a knocking block (5184) and a knocking plate (5185); the third fixing block (5181) is fixedly connected to the top of the bearing plate (517); the top of the third fixed block (5181) is provided with a groove, and the knocking rod (5182) is arranged on the side wall of the groove; the torsion spring (5183) is arranged on the side wall of the knocking rod (5182); the knocking block (5184) is fixedly connected to the side wall of the knocking rod (5182); the knocking plate (5185) is fixedly connected to the inner cavity side wall of the cover body (519).

5. The aluminum core compacted conductor low-voltage fire-resistant power cable according to claim 1, wherein the cable body (3) comprises an aluminum core (31), an inorganic mineral filling layer (32), a radiation cross-linked polyethylene insulating layer (33), an inorganic fiber tape heat-insulating layer (34), a flame-retardant sponge filling layer (35), a longitudinal water-blocking buffer layer (36), a metal armor layer (37) and a halogen-free low-smoke flame-retardant outer sheath (38); the irradiation crosslinking polyethylene insulating layer (33) wraps the aluminum core (31); the inorganic fiber tape heat insulation layer (34) wraps the irradiation cross-linked polyethylene insulation layer (33); the flame-retardant sponge filling layer (35) wraps the inorganic fiber wrapping tape heat insulation layer (34); the longitudinal water-blocking buffer layer (36) wraps the flame-retardant sponge filling layer (35); the metal armor layer (37) wraps the longitudinal water-blocking buffer layer (36); the halogen-free low-smoke flame-retardant outer sheath (38) wraps the metal armor layer (37); an inorganic mineral filling layer (32) is arranged between the irradiation crosslinked polyethylene insulating layer (33) and the inorganic fiber wrapping tape heat-insulating layer (34).

6. An aluminium core pressed conductor low voltage fire resistant power cable according to claim 2, characterized in that the elastic block (41) comprises a housing (411), a third spring (412) and a pushing block (413); the third spring (412) is fixedly connected to the side wall of the inner cavity of the shell (411); the pushing block (413) is arranged at the end part of the spring, and the side wall is hinged with the first connecting rod (46).