CN214958399U

CN214958399U - Subway construction high-voltage line protector

Info

Publication number: CN214958399U
Application number: CN202121135726.8U
Authority: CN
Inventors: 张志安; 吴彦林; 赵金秀; 刘文平
Original assignee: Electrical Engineering Co Ltd of China Railway Sixth Group Co Ltd
Current assignee: Electrical Engineering Co Ltd of China Railway Sixth Group Co Ltd
Priority date: 2021-05-25
Filing date: 2021-05-25
Publication date: 2021-11-30
Anticipated expiration: 2031-05-25

Abstract

The application discloses subway construction high-voltage line protector, including first protection frame, light-passing board, diaphragm, support frame, clamp ring, bottom plate, first backup pad, guard plate, snap-on board, guide way, block, connecting rod, fixed block, through-hole, the lantern ring, shock attenuation board, second protection frame, regulating block, second backup pad, gusset plate, connecting plate, regulation pole, first inoxidizing coating, second inoxidizing coating, fixed strip and place the board. The guide groove and the connecting plate are convenient for adjusting the position of the second protective frame, and the reinforcing plate and the second supporting plate can be used for mounting and reinforcing the clamping plate; the position of the lantern ring can be adjusted by the adjusting rod and the adjusting block, the support frame and the clamping ring are beneficial to the limiting and placing of the high-voltage wire, the anti-interference protection can be carried out on the high-voltage wire by the protection plate, and the abrasion of the high-voltage wire during use is reduced; the connecting rod does benefit to the installation and the dismantlement between the lantern ring, and the shock attenuation board can be to diaphragm top shock attenuation protection, and the block position of gusset plate is adjustable, is convenient for place electromechanical device in the second backup pad.

Description

Subway construction high-voltage line protector

Technical Field

The application relates to the field of subway construction, in particular to a subway construction high-voltage line protection device.

Background

High voltage line generally refers to a transmission line carrying voltages above 10 kV. High pressures are generally free of 1000V, as specified in GB/T2900.50-2008, definition 2.1. The voltage grades of the high-voltage transmission lines in China are generally divided into: 35kV, 110kV, 220kV, 330kV, 500kV, 750kV and the like.

The protection range of the protection device is not easy to adjust, the high-voltage wires at different positions are not easy to protect, a supporting structure is not needed on the protection device, the high-voltage wires can be wound and disturbed by one another when falling, the high-voltage wires are not needed to be limited and placed in an auxiliary structure, the high-voltage wires are worn greatly, the protection of the high-voltage wires is not facilitated, the structure inside the protection device is not easy to adjust according to the number of high-voltage wire harnesses, electromechanical equipment is not easy to install on the protection device, and the use of the whole device is influenced. Therefore, the subway construction high-voltage line protection device is provided aiming at the problems.

Disclosure of Invention

The utility model provides a subway construction high-voltage line protector is arranged in solving prior art in the protective scope difficult regulation, the high-voltage line lacks spacing auxiliary structure, the protecting effect is unsatisfactory, and protector's suitability is not high, is difficult for placing electromechanical device, awkward problem.

According to one aspect of the application, the high-voltage line protection device for subway construction comprises a bottom plate, a protection mechanism and an adjusting mechanism, wherein a first protection frame is fixedly connected to the top of the bottom plate, a second protection frame is installed on the right side of the first protection frame, and transverse plates are fixedly connected to inner cavities of the first protection frame and the second protection frame;

the protection mechanism comprises a clamping ring, protection plates and a damping plate, the clamping ring is arranged in lantern rings, the lantern rings are connected through connecting rods, the protection plates are arranged on one sides of the lantern rings and are fixedly connected to the inner walls of a first protection frame and a second protection frame respectively, the damping plate is arranged above a transverse plate, and the upper side and the lower side of the damping plate are fixedly connected with positioning plates;

the adjusting mechanism is installed on a second protective frame, the second protective frame is in sliding connection with the guide groove, the guide groove is formed in the top of the bottom plate, a clamping plate is clamped on the bottom plate, and a placing plate is installed on the clamping plate.

Further, diaphragm bottom block has the support frame, the inside rigid coupling of support frame has the fixed strip, the equal rigid coupling in support frame both sides has the fixed block, the support frame is totally two, two the support frame rigid coupling is in first protection frame and second protection frame inner chamber bottom respectively, first protection frame and second protection frame are all run through by the through-hole.

Further, the gomphosis has the light-passing board on first protection frame and the second protection frame lateral wall, the regulation pole is installed to the light-passing board inboard, adjust the pole and cup joint on the regulating block, regulating block top block is on the diaphragm, sliding connection between regulating block and the diaphragm.

Furthermore, the lantern ring is totally two sets ofly, and every group all has threely the lantern ring is located the top the lantern ring rigid coupling is in the regulating block bottom, is located the bottom the lantern ring rigid coupling has first backup pad, first backup pad respectively with first protection frame and second protection between the frame sliding connection.

Furthermore, be located the centre pass through threaded connection between the lantern ring and the connecting rod, the diameter of connecting rod is less than adjusts the pole, the nut has cup jointed on adjusting the pole, the nut is located regulating block both sides.

Further, a clamping ring is fixedly connected to the inner wall of the lantern ring through a spring, the clamping ring is arc-shaped, the two clamping rings are connected through a bolt, the width of the clamping ring is larger than that of the lantern ring, and the diameter of the clamping ring is smaller than that of the lantern ring.

Further, a first protective layer is fixedly connected to the inner wall of the protection plate, a second protective layer is fixedly connected to one side, away from the inner wall of the protection plate, of the first protective layer, the thickness of the second protective layer is smaller than that of the first protective layer, and a metal net is embedded in the first protective layer.

Furthermore, the adjusting mechanism comprises a clamping block, a second supporting plate and a connecting plate, the clamping block is fixedly connected to the bottom of the second protective frame, the clamping block is clamped in the guide groove and slidably connected with the guide groove, the connecting plate is fixedly connected to the top of the inner cavity of the second protective frame, and the left end of the connecting plate is clamped in the first protective frame and slidably connected with the first protective frame.

Furthermore, the bottom of the connecting plate is clamped with one end of a reinforcing plate, the bottom end of the reinforcing plate is clamped on a second supporting plate, the second supporting plate is clamped on the top of the clamping plate, the top of the clamping plate is fixedly connected with four vertical rods, and a placing plate is fixedly connected between the vertical rods.

Further, the block board is located between two guide ways, the block board size is less than the connecting plate, the connecting plate runs through second protection frame left side wall.

Through the above-mentioned embodiment of this application, adopted protection machanism and adjustment mechanism, it is unsatisfactory to have solved high-voltage line protecting effect, and the problem that the protective scope is difficult for adjusting has gained that high-voltage line wearing and tearing are few, and the protective effect is good, and protective scope is adjustable effect.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive exercise.

FIG. 1 is a schematic perspective view of an embodiment of the present application;

FIG. 2 is a schematic diagram of the overall structure of an embodiment of the present application;

FIG. 3 is a schematic diagram of a clamp ring configuration according to an embodiment of the present application;

FIG. 4 is a schematic view of an internal structure of a fender according to an embodiment of the present application;

fig. 5 is a schematic structural diagram of a fixing strip according to an embodiment of the present application.

In the figure: 1. first protection frame, 101, light-passing board, 2, diaphragm, 3, support frame, 4, clamp ring, 5, bottom plate, 6, first backup pad, 7, protection plate, 8, block board, 9, guide way, 901, block piece, 10, the connecting rod, 11, the fixed block, 12, the through-hole, 13, the lantern ring, 14, the buffer board, 15, second protection frame, 16, the regulating block, 17, the second backup pad, 18, the gusset plate, 19, the connecting plate, 20, adjust the pole, 21, first protection layer, 22, the second protection layer, 23, the fixed strip, 24, place the board.

Detailed Description

In order to make the technical solutions better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only partial embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It should be understood that the data so used may be interchanged under appropriate circumstances such that embodiments of the application described herein may be used. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

In this application, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings. These terms are used primarily to better describe the present application and its embodiments, and are not used to limit the indicated devices, elements or components to a particular orientation or to be constructed and operated in a particular orientation.

Moreover, some of the above terms may be used to indicate other meanings besides the orientation or positional relationship, for example, the term "on" may also be used to indicate some kind of attachment or connection relationship in some cases. The specific meaning of these terms in this application will be understood by those of ordinary skill in the art as appropriate.

Furthermore, the terms "mounted," "disposed," "provided," "connected," and "sleeved" are to be construed broadly. For example, it may be a fixed connection, a removable connection, or a unitary construction; can be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements or components. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.

The protection device in this embodiment may be applicable to various high-voltage lines, for example, the following composite high-voltage line is provided in this embodiment, and the protection device in this embodiment may be used to protect the following high-voltage line.

This high-voltage line, central conductor that forms including many copper monofilament transposition, the central conductor is equipped with the silica gel insulating layer rather than coaxial setting outward, the outer parcel of silica gel insulating layer has woven shield, the outer parcel of woven shield has the aluminium metal foil layer, the outer parcel of metal foil layer has the crosslinked polyethylene restrictive coating.

As a further improvement of the embodiment, the central conductor adopts a category 6 soft conductor meeting the GB/T3956 requirement, and the conductor is formed by stranding a plurality of monofilaments, and the diameter of each monofilament is 0.15 mm.

After the single-wire bundle is twisted, 19 or 37 strands of bundles are twisted in the same direction to form the central conductor, and a cage twisting machine with a back-twisting device is used for production during the twisting, so that the stress generated by the twisting can be eliminated, and the wire is more round, soft and compact.

The silica gel insulating layer plays an insulating role, and meanwhile, the cable has the advantages of high pressure resistance, excellent flexibility, super-long aging resistance, flame retardance, long service life and the like.

As a further improvement of the embodiment, the braided shielding layer is formed by braiding a plurality of tinned copper wires with the monofilament diameter of 0.15mm, so that interference signals can be effectively prevented from entering the conductor, and the loss of transmission signals is reduced.

As a further improvement of this embodiment, the metal foil layer is formed by wrapping an aluminum-plastic composite tape, the aluminum-plastic composite tape is preferably a single-sided aluminum foil, and the overlapping rate of the aluminum-plastic composite tape is not less than 25%. The metal foil layer protects the braided shielding layer and the inner layer of the crosslinked polyethylene sheath layer, and shields electric and magnetic interference together with the braided shielding layer, so that the transmission of strong current and weak current is effectively ensured.

The crosslinked polyethylene sheath layer can protect cables, so that the battery acid corrosion resistance, the chemical resistance, the water resistance, the puncture resistance of sharp objects and the like of the whole electric wire are greatly improved, the crosslinked polyethylene material also has good mechanical strength, and the crosslinked polyethylene sheath layer is extruded by the material, so that the service life and the safety of the electric wire are greatly prolonged.

As a further improvement of this embodiment, the thickness of the silicone rubber insulating layer is smaller than that of the crosslinked polyethylene sheath layer, and since silicone rubber has excellent insulating properties, the silicone rubber insulating layer made of silicone rubber still has excellent insulating properties under the condition that the thickness of the silicone rubber insulating layer made of crosslinked polyethylene is smaller than that of the silicone rubber insulating layer made of crosslinked polyethylene, and meanwhile, the wire diameter of the whole wire is smaller than that of the wire made of crosslinked polyethylene used for both insulation and the sheath, so that the flexibility of the wire is enhanced, and the wire is more convenient to lay in a vehicle.

In summary, the silica gel insulating layer of the composite high-voltage wire of the utility model enables the cable to have the advantages of high pressure resistance, excellent flexibility, super-long aging resistance, flame retardance, long service life and the like; the crosslinked polyethylene sheath layer greatly improves the resistance to corrosion of battery acid, chemicals, water, sharp objects and the like of the whole wire, and the crosslinked polyethylene material also has good mechanical strength. The silica gel insulating layer with the combined use of crosslinked polyethylene restrictive coating has improved insulating nature in, has avoided the silica gel layer not resistant oily, and is not resistant scraping, easily by the puncture fracture, meets the sour easy corruption fracture of battery, and the printing drops scheduling problem easily, and whole wire rod diameter ratio is insulating all uses crosslinked polyethylene material with the sheath will be little simultaneously, makes the electric wire softness can strengthen, and it lays in the car to be convenient more.

Of course, the present embodiment can also be used for protecting high-voltage wires of other structures. Here, description is not repeated, and the following describes the protection device according to the embodiment of the present application.

Referring to fig. 1-5, the high-voltage line protection device for subway construction comprises a bottom plate 5, a protection mechanism and an adjusting mechanism, wherein a first protection frame 1 is fixedly connected to the top of the bottom plate 5, a second protection frame 15 is installed on the right side of the first protection frame 1, and transverse plates 2 are fixedly connected to inner cavities of the first protection frame 1 and the second protection frame 15, so that the first protection frame 1 and the second protection frame 15 can protect high-voltage lines;

the protection mechanism comprises a clamping ring 4, a protection plate 7 and a damping plate 14, the clamping ring 4 is installed inside a lantern ring 13, the lantern rings 13 are connected through a connecting rod 10, the protection plate 7 is installed on one side of the lantern ring 13, the protection plate 7 is fixedly connected to the inner walls of a first protection frame 1 and a second protection frame 15 respectively, the damping plate 14 is installed above a transverse plate 2, and positioning plates are fixedly connected to the upper side and the lower side of the damping plate 14 so that the damping plate 14 can be conveniently connected with the two positioning plates;

the adjusting mechanism is installed on a second protective frame 15, the second protective frame 15 is in sliding connection with a guide groove 9, the guide groove 9 is formed in the top of the bottom plate 5, a clamping plate 8 is clamped on the bottom plate 5, and a placing plate 24 is installed on the clamping plate 8, so that the clamping plate 8 can be installed on the bottom plate 5 conveniently.

The bottom of the transverse plate 2 is clamped with a support frame 3, a fixing strip 23 is fixedly connected inside the support frame 3, fixing blocks 11 are fixedly connected to two sides of the support frame 3, the number of the support frames 3 is two, the two support frames 3 are fixedly connected to the bottoms of the inner cavities of the first protection frame 1 and the second protection frame 15 respectively, the first protection frame 1 and the second protection frame 15 are penetrated through by through holes 12, and the support frame 3 is convenient to mount inside the first protection frame 1 and the second protection frame 15; the side walls of the first protection frame 1 and the second protection frame 15 are embedded with light-transmitting plates 101, adjusting rods 20 are installed on the inner sides of the light-transmitting plates 101, the adjusting rods 20 are sleeved on the adjusting blocks 16, the tops of the adjusting blocks 16 are clamped on the transverse plate 2, the adjusting blocks 16 are connected with the transverse plate 2 in a sliding mode, and the adjusting blocks 16 can move on the adjusting rods 20 conveniently; the number of the lantern rings 13 is two, each group is provided with three lantern rings 13, the lantern ring 13 positioned at the top is fixedly connected to the bottom of the adjusting block 16, the lantern ring 13 positioned at the bottom is fixedly connected with the first supporting plate 6, and the first supporting plate 6 is respectively in sliding connection with the first protective frame 1 and the second protective frame 15, so that the position of the lantern ring 13 can be adjusted conveniently; the middle lantern ring 13 is in threaded connection with the connecting rod 10, the diameter of the connecting rod 10 is smaller than that of the adjusting rod 20, nuts are sleeved on the adjusting rod 20 and are located on two sides of the adjusting block 16, and therefore the two sides of the adjusting block 16 can be limited conveniently; the inner wall of the lantern ring 13 is fixedly connected with a clamping ring 4 through a spring, the clamping ring 4 is arc-shaped, the two clamping rings 4 are connected through a bolt, the width of the clamping ring 4 is larger than that of the lantern ring 13, and the diameter of the clamping ring 4 is smaller than that of the lantern ring 13, so that the clamping ring 4 can clamp a high-voltage wire conveniently; a first protective layer 21 is fixedly connected to the inner wall of the protective plate 7, a second protective layer 22 is fixedly connected to one side, away from the inner wall of the protective plate 7, of the first protective layer 21, the thickness of the second protective layer 22 is smaller than that of the first protective layer 21, and a metal net is embedded in the first protective layer 21, so that electromagnetic interference protection is facilitated for the high-voltage wire; the adjusting mechanism comprises a clamping block 901, a second supporting plate 17 and a connecting plate 19, the clamping block 901 is fixedly connected to the bottom of the second protective frame 15, the clamping block 901 is clamped in the guide groove 9 and is in sliding connection with the guide groove 9, the connecting plate 19 is fixedly connected to the top of the inner cavity of the second protective frame 15, the left end of the connecting plate 19 is clamped in the first protective frame 1 and is in sliding connection with the first protective frame 1, and the connecting plate 19 can move in the first protective frame 1 conveniently; one end of a reinforcing plate 18 is clamped at the bottom of the connecting plate 19, the bottom end of the reinforcing plate 18 is clamped on a second supporting plate 17, the second supporting plate 17 is clamped at the top of the clamping plate 8, four vertical rods are fixedly connected to the top of the clamping plate 8, and a placing plate 24 is fixedly connected among the four vertical rods, so that the vertical rods can conveniently reinforce the placing plate 24; the clamping plate 8 is located between the two guide grooves 9, the size of the clamping plate 8 is smaller than that of the connecting plate 19, and the connecting plate 19 penetrates through the left side wall of the second protection frame 15, so that the connecting plate 19 is conveniently connected with the second protection frame 15.

When the utility model is used, firstly, the second protective frame 15 is moved on the bottom plate 5, so that the clamping block 901 and the connecting plate 19 are respectively clamped, the clamping plate 8 and the reinforcing plate 18 are installed on the bottom plate 5, the position of the connecting plate 19 is fixed, a high-voltage wire passes through the through holes on the fixed block 11 and the fixed strip 23, the position of the adjusting block 16 is moved on the adjusting rod 20, the distance between the clamping rings 4 is changed, the high-voltage wire passes through the lantern ring 13 and is clamped on the outside of the high-voltage wire by the clamping ring 4, the high-voltage wire enters the second protective frame 15 through the placing plate 24, passes through the protective plate 7 and the lantern ring 13 on the right side and is placed on the supporting frame 3, finally, the high-voltage wire is output through the through hole 12, the metal wires made of different materials are arranged in the first protective layer 21 and the second protective layer 22, the electromagnetic interference of the high-voltage wire in use can be reduced, the positioning plate at the top of the damping plate 14 is fixedly connected at the top of the inner cavities of the first protective frame 1 and the second protective frame 15, the positioning plate at the bottom of the damping plate 14 is lapped on the transverse plate 2 to support and protect the top of the transverse plate 2.

The application has the advantages that:

1. the operation is simple, the position of the second protection frame 15 can be conveniently adjusted by the guide groove 9 and the connecting plate 19, the protection range is changed, the reinforcing plate 18 and the second supporting plate 17 can be used for mounting and reinforcing the clamping plate 8, the clamping plate 8 and the placing plate 24 are beneficial to supporting high-voltage wires, and winding caused by falling of the wire harness is avoided;

2. the high-voltage wire anti-interference protection device is reasonable in structure, the positions of the lantern rings 13 can be adjusted by the adjusting rods 20 and the adjusting blocks 16, the support frame 3 and the clamping ring 4 are beneficial to limiting and placing of a high-voltage wire, the high-voltage wire can be protected by the protection plate 7 in an anti-interference mode, abrasion of the high-voltage wire during use is reduced, and the protection effect is good;

3. connecting rod 10 does benefit to the installation and the dismantlement between the lantern ring 13, can adjust according to the quantity of pencil, and the shock attenuation board 14 can be to diaphragm 2 top shock attenuation protection, and the block position of gusset plate 18 is adjustable, is convenient for place electromechanical device on second backup pad 17.

It is well within the skill of those in the art to implement, without undue experimentation, the present application is not directed to software and process improvements, as they relate to circuits and electronic components and modules.

The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. The utility model provides a subway construction high-voltage line protector which characterized in that: the protective device comprises a bottom plate (5), a protective mechanism and an adjusting mechanism, wherein a first protective frame (1) is fixedly connected to the top of the bottom plate (5), a second protective frame (15) is arranged on the right side of the first protective frame (1), and transverse plates (2) are fixedly connected to inner cavities of the first protective frame (1) and the second protective frame (15);

the protection mechanism comprises a clamping ring (4), protection plates (7) and a damping plate (14), the clamping ring (4) is installed inside a lantern ring (13), the lantern rings (13) are connected through a connecting rod (10), the protection plates (7) are installed on one side of the lantern ring (13), the protection plates (7) are fixedly connected to the inner walls of a first protection frame (1) and a second protection frame (15) respectively, the damping plate (14) is installed above a transverse plate (2), and the upper side and the lower side of the damping plate (14) are fixedly connected with positioning plates;

adjustment mechanism installs on second protection frame (15), sliding connection between second protection frame (15) and guide way (9), set up at bottom plate (5) top guide way (9), the block has block board (8) on bottom plate (5), install on block board (8) and place board (24).

2. The subway construction high-voltage line protection device as claimed in claim 1, wherein: diaphragm (2) bottom block has support frame (3), the inside rigid coupling of support frame (3) has fixed strip (23), the equal rigid coupling in support frame (3) both sides has fixed block (11), support frame (3) are two totally, two support frame (3) rigid coupling is in first protection frame (1) and second protection frame (15) inner chamber bottom respectively, first protection frame (1) and second protection frame (15) are all run through by through-hole (12).

3. The subway construction high-voltage line protection device as claimed in claim 1, wherein: the gomphosis has light-passing board (101) on first protection frame (1) and second protection frame (15) lateral wall, light-passing board (101) inboard is installed and is adjusted pole (20), it cup joints on regulating block (16) to adjust pole (20), regulating block (16) top block is on diaphragm (2), sliding connection between regulating block (16) and diaphragm (2).

4. The subway construction high-voltage line protection device as claimed in claim 1, wherein: the lantern ring (13) is totally two sets ofly, and every group all has threely lantern ring (13) is located the top lantern ring (13) rigid coupling is in regulating block (16) bottom, is located the bottom lantern ring (13) rigid coupling has first backup pad (6), first backup pad (6) respectively with first protection frame (1) and second protection frame (15) between sliding connection.

5. The subway construction high-voltage line protection device as claimed in claim 1, wherein: be located in the middle through threaded connection between lantern ring (13) and connecting rod (10), the diameter of connecting rod (10) is less than adjusts pole (20), adjust pole (20) and go up the cup joint nut, the nut is located regulating block (16) both sides.

6. The subway construction high-voltage line protection device as claimed in claim 1, wherein: the inner wall of the lantern ring (13) is fixedly connected with a clamping ring (4) through a spring, the clamping ring (4) is arc-shaped, the two clamping rings (4) are connected through a bolt, the width of the clamping ring (4) is larger than that of the lantern ring (13), and the diameter of the clamping ring (4) is smaller than that of the lantern ring (13).

7. The subway construction high-voltage line protection device as claimed in claim 1, wherein: the safety protection device is characterized in that a first protection layer (21) is fixedly connected to the inner wall of the protection plate (7), a second protection layer (22) is fixedly connected to one side, away from the inner wall of the protection plate (7), of the first protection layer (21), the thickness of the second protection layer (22) is smaller than that of the first protection layer (21), and a metal mesh is embedded in the first protection layer (21).

8. The subway construction high-voltage line protection device as claimed in claim 1, wherein: the adjusting mechanism comprises a clamping block (901), a second supporting plate (17) and a connecting plate (19), the clamping block (901) is fixedly connected to the bottom of the second protective frame (15), the clamping block (901) is clamped in the guide groove (9) and is in sliding connection with the guide groove (9), the connecting plate (19) is fixedly connected to the top of the inner cavity of the second protective frame (15), and the left end of the connecting plate (19) is clamped in the first protective frame (1) and is in sliding connection with the first protective frame (1).

9. The subway construction high-voltage line protector of claim 8, characterized in that: the clamping of connecting plate (19) bottom has gusset plate (18) one end, gusset plate (18) bottom clamping is on second backup pad (17), second backup pad (17) clamping is at splice plate (8) top, splice plate (8) top rigid coupling has four montants, four the rigid coupling has place board (24) between the montant.

10. The subway construction high-voltage line protection device as claimed in claim 1, wherein: the clamping plate (8) is located between the two guide grooves (9), the size of the clamping plate (8) is smaller than that of the connecting plate (19), and the connecting plate (19) penetrates through the left side wall of the second protective frame (15).