阅读说明：本技术 一种光缆防护槽体结构和光缆防护装置 (Optical cable protection groove structure and optical cable protection device ) 是由 孙庆春 李衍男 李朝峰 余涛 董亚如 于 2019-10-28 设计创作，主要内容包括：本发明提供了一种光缆防护槽体结构和光缆防护装置,属于光缆防护技术领域,光缆防护槽体结构包括支撑槽体、防火芯层、绝热层和防火涂层。支撑槽体用于固定在沟道的表面；防火芯层设置在支撑槽体的内侧,防火芯层的内侧设有用于容纳电缆的条形腔体；绝热层设置在支撑槽体和防火芯层之间；防火涂层,设置在支撑槽体的外侧。光缆防护装置包括多个光缆防护槽体结构,两个相邻光缆防护槽体结构之间设有连接件,连接件分别与两个相邻支撑槽体的端部连接。本发明提供的一种光缆防护槽体结构和光缆防护装置,将位于同一沟槽内的光缆和电缆隔开,同时起到了对光缆的防火、隔热和防爆作用,保证了电力系统通信的正常运行。(The invention provides an optical cable protection groove body structure and an optical cable protection device, and belongs to the technical field of optical cable protection. The supporting groove body is used for being fixed on the surface of the channel; the fireproof core layer is arranged on the inner side of the supporting groove body, and a strip-shaped cavity for accommodating a cable is arranged on the inner side of the fireproof core layer; the heat insulation layer is arranged between the support groove body and the fireproof core layer; and the fireproof coating is arranged on the outer side of the supporting groove body. The optical cable protection device comprises a plurality of optical cable protection groove body structures, a connecting piece is arranged between two adjacent optical cable protection groove body structures, and the connecting piece is connected with the end parts of two adjacent supporting groove bodies respectively. According to the optical cable protection groove body structure and the optical cable protection device, the optical cable and the electric cable which are positioned in the same groove are separated, the fireproof, heat insulation and explosion-proof effects on the optical cable are achieved, and the normal operation of communication of a power system is guaranteed.)

1. The utility model provides an optical cable protection cell body structure which characterized in that includes:

the supporting groove body is used for being fixed on the surface of the channel;

the fireproof core layer is arranged on the inner side of the supporting groove body, and a strip-shaped cavity for accommodating a cable is arranged on the inner side of the fireproof core layer;

the heat insulation layer is arranged between the support groove body and the fireproof core layer; and

and the fireproof coating is arranged on the outer side of the supporting groove body.

2. An optical cable protective trough structure as claimed in claim 1, wherein the support trough comprises: a support portion and a mounting portion; the mounting parts are positioned at two sides of the supporting part and are used for being fixedly connected with the channel; the heat insulating layer is embedded inside the support portion.

3. The optical cable protective groove structure as claimed in claim 2, wherein the supporting part is a U-shaped structure.

4. The optical cable protection groove body structure as claimed in claim 1, wherein the support groove body is made of a non-pattern galvanized plate, the fireproof core layer is made of a polyurethane high polymer material, the heat insulation layer is made of an aerogel heat insulation composite material, and the heat insulation layer is fixedly bonded with the fireproof core layer.

5. The optical cable protection groove body structure as claimed in claim 1, wherein a waterproof layer is further arranged on the outer side of the fireproof coating, and the waterproof layer is made of aluminum foil glass fiber cloth.

6. The optical cable protection groove body structure as claimed in claim 1, wherein the thickness ratio of the fireproof core layer, the heat insulation layer, the support groove body and the fireproof coating is 10-15:5:1: 2.

7. A cable protection device, comprising a plurality of cable protection trough structures as claimed in any one of claims 1 to 6; and a connecting piece is arranged between the two adjacent optical cable protection groove body structures and is respectively connected with the end parts of the two adjacent supporting groove bodies.

8. An optical cable protection device as claimed in claim 7, wherein a slot is provided in the middle of the connecting member, a limiting boss is provided at each of the two ends of the supporting slot, and the end face of the limiting boss is engaged with the end face of the slot.

9. An optical cable guard according to claim 8, wherein the slot is a U-shaped slot or dovetail.

10. An optical cable protective device as claimed in claim 7, wherein a gasket is provided between two adjacent support channels.

Technical Field

The invention belongs to the technical field of optical cable protection, and particularly relates to an optical cable protection groove structure and an optical cable protection device adopting the optical cable protection groove structure.

Background

With the gradual development of power communication networks, the use of optical cables is more and more popular, and new requirements are provided for the protection performance of the optical cables. At present, both the optical cable and the electric cable are arranged in the same channel, and the channel is formed by pouring concrete. When the cable explodes, the optical cable can be ignited to damage the optical cable, and the normal operation of the communication of the power system is seriously influenced. And the original single channel is reformed into the double channel, so that the construction difficulty is higher and the cost is higher.

Disclosure of Invention

The invention aims to provide an optical cable protection groove structure, and aims to solve the problems that an optical cable is easy to ignite due to explosion of the optical cable, the optical cable is damaged, and the normal operation of communication of an electric power system is seriously influenced.

In order to achieve the purpose, the invention adopts the technical scheme that: provided is an optical cable protection groove structure, including:

the supporting groove body is used for being fixed on the surface of the channel;

the fireproof core layer is arranged on the inner side of the supporting groove body, and a strip-shaped cavity for accommodating a cable is arranged on the inner side of the fireproof core layer;

the heat insulation layer is arranged between the support groove body and the fireproof core layer; and

and the fireproof coating is arranged on the outer side of the supporting groove body.

As another embodiment of the present application, the support groove body includes: a support portion and a mounting portion; the mounting parts are positioned at two sides of the supporting part and are used for being fixedly connected with the channel; the heat insulating layer is embedded inside the support portion.

As another embodiment of the present application, the supporting portion has a U-shaped structure.

As another embodiment of this application, the support cell body adopts no decorative pattern galvanized sheet, the fire prevention sandwich layer adopts polyurethane high-molecular polymer material, the heat insulation layer adopts aerogel adiabatic combined material, the heat insulation layer with the bonding of fire prevention sandwich layer is fixed.

As another embodiment of this application, the outside of fire protection coating still is equipped with the waterproof layer, the waterproof layer adopts aluminium foil glass fiber cloth.

As another embodiment of the present application, the thickness ratio of the fireproof core layer, the heat insulating layer, the support groove body and the fireproof coating is 10-15:5:1: 2.

The optical cable protection groove structure provided by the invention has the beneficial effects that: compared with the prior art, the optical cable protection groove body structure is sequentially provided with the fireproof core layer, the heat insulation layer, the support groove body and the fireproof coating from inside to outside, the optical cable protection groove body structure is fixed on the surface of the channel by means of the support groove body, and the inner side of the fireproof core layer is provided with the strip-shaped cavity for accommodating a cable. The optical cable and the cable which are positioned in the same groove are separated by means of the optical cable protection groove body structure, the fireproof, heat insulation and explosion-proof effects on the optical cable are achieved, and the normal operation of power system communication is guaranteed.

Another object of the present invention is to provide an optical cable protection device, which includes a plurality of optical cable protection groove structures as described above; and a connecting piece is arranged between the two adjacent optical cable protection groove body structures and is respectively connected with the end parts of the two adjacent supporting groove bodies.

As another embodiment of this application, the middle part of connecting piece is equipped with the draw-in groove, the both ends of supporting the cell body all are equipped with spacing boss, the terminal surface of spacing boss with the terminal surface cooperation of draw-in groove.

As another embodiment of the present application, the slot is a U-shaped slot or a dovetail slot.

As another embodiment of the application, a sealing gasket is arranged between two adjacent supporting groove bodies.

The optical cable protection device provided by the invention has the beneficial effects that: compared with the prior art, the optical cable protection device comprises a plurality of optical cable protection groove body structures, the optical cable protection groove body structures are sequentially provided with a fireproof core layer, a heat insulation layer, a supporting groove body and a fireproof coating from inside to outside, the optical cable protection groove body structures are fixed on the surface of a channel through the supporting groove body, and the inner side of the fireproof core layer is provided with a strip-shaped cavity for accommodating a cable. The optical cable and the cable which are positioned in the same groove are separated by means of the optical cable protection groove body structure, the fireproof, heat insulation and explosion-proof effects on the optical cable are achieved, and the normal operation of power system communication is guaranteed. And a connecting piece is arranged between the two adjacent optical cable protection groove body structures and is respectively connected with the end parts of the two adjacent supporting groove bodies. The optical cable protection device strengthens the connection strength between adjacent optical cable protection groove body structures by means of the connecting piece, and improves the shock resistance of the optical cable protection device.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed for the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

Fig. 1 is a schematic structural diagram of an optical cable protection groove structure provided in an embodiment of the present invention;

FIG. 2 is a cross-sectional view taken along line A of FIG. 1;

fig. 3 is a partial schematic structural diagram of a connector structure according to an embodiment of the present invention;

fig. 4 is a partial structural schematic view of a connector structure according to a second embodiment of the present invention;

fig. 5 is a partial structural schematic view of a connector structure according to a third embodiment of the present invention.

In the figure: 1. a supporting trough body; 101. a support portion; 102. an installation part; 103. mounting holes; 2. a fire-resistant core layer; 201. a strip-shaped cavity; 3. a heat insulating layer; 4. a fire-retardant coating; 5. a waterproof layer; 6. a connecting member; 601. a card slot; 602. a limiting boss; 603. carrying out top thread; 604. a slider; 605. a wedge block; 606. a bolt; 7. and a gasket.

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Referring to fig. 1 and fig. 2, the structure of the cable protective groove according to the present invention will now be described. Optical cable protection cell body structure is including supporting cell body 1, fire prevention sandwich layer 2, heat insulation layer 3 and fire protection coating 4. The supporting groove body 1 is used for being fixed on the surface of a channel; the fireproof core layer 2 is arranged on the inner side of the supporting groove body 1, and a strip-shaped cavity 201 for accommodating a cable is arranged on the inner side of the fireproof core layer 2; the heat insulation layer 3 is arranged between the support tank body 1 and the fireproof core layer 2; and the fireproof coating 4 is arranged on the outer side of the support tank body 1.

Compared with the prior art, the optical cable protection groove body structure provided by the invention is sequentially provided with the fireproof core layer 2, the heat insulation layer 3, the support groove body 1 and the fireproof coating 4 from inside to outside, the optical cable protection groove body structure is fixed on the surface of a channel by means of the support groove body 1, and the inner side of the fireproof core layer 2 is provided with the strip-shaped cavity 201 for accommodating a cable. The optical cable and the cable which are positioned in the same groove are separated by means of the optical cable protection groove body structure, the fireproof, heat insulation and explosion-proof effects on the optical cable are achieved, and the normal operation of power system communication is guaranteed.

As a specific embodiment of the optical cable protection groove structure provided in the present invention, please refer to fig. 1, the support groove 1 includes: a support portion 101 and a mounting portion 102; the mounting parts 102 are positioned at two sides of the supporting part 101 and are used for being fixedly connected with the channel; the heat insulating layer 3 is embedded inside the support portion 101. In this embodiment, the supporting portion 101 and the mounting portion 102 are an integral structure, which has better structural performance and is more durable. The length direction of the mounting portion 102 is the same as the length direction of the bar-shaped cavity 201, and the mounting portion 102 has a flange structure and the length thereof is the same as that of the supporting portion 101. The mounting portion 102 is uniformly arranged with a plurality of mounting holes 103 along a length direction thereof, and screws pass through the mounting holes 103 to fix the support portion 101 to a surface of the groove. Since the fireproof coating 4 covers the entire outer area of the supporting portion 101 and the mounting portion 102, the fireproof coating 4 is also correspondingly provided with mounting holes 103. In order to ensure that the mounting portion 102 completely conforms to the surface of the groove, the shape of the mounting portion 102 may be adapted to the surface shape of the different grooves. The surface shape of the groove is generally divided into a plane surface and a circular arc surface. Because reasons such as construction quality, unevenness can exist on the surface of slot, at this moment, increase the elastic gasket in the bottom surface of installation department 102, fastening through the screw makes the elastic gasket produce compression deformation, prevents effectively that the production is unsettled under the installation department 102, plays sealed effect simultaneously. The elastic gasket is made of high-temperature-resistant rubber, so that the elastic gasket is prevented from burning and even melting due to high-temperature heat generated by the electric wire in the explosion process, harmful gas is generated, certain potential safety hazard is caused, and the safety factor of the construction environment of electric power construction personnel is improved.

As a specific implementation manner of the embodiment of the present invention, please refer to fig. 1, the supporting portion 101 is a U-shaped structure. The heat insulation layer 3 and the fireproof core layer 2 are sequentially sleeved on the inner side of the supporting part 101; and the heat insulation layer 3 and the fireproof core layer 2 are both U-shaped structures. The bottom of heat insulation layer 3 and fire prevention sandwich layer 2 and the bottom parallel and level of supporting part 101 guarantee that heat insulation layer 3 and fire prevention sandwich layer 2 all with the channel butt, the optical cable is sealed in the inside of fire prevention sandwich layer 2. When the diameter of the optical cable is smaller, a plurality of optical cables can be bundled into a bundle and placed in the strip-shaped cavity 201 of the fireproof core layer 2; if the diameter of the optical cable is large, when the strip-shaped cavity 201 can only contain one optical cable, a plurality of optical cable protection groove body structures can be arranged in the channel side by side, and protection of all the optical cables in the channel is achieved. On the premise of ensuring that the optical cable protection groove structure can be conveniently carried and actually allows installation space, the single optical cable protection groove structure can be ensured to contain more optical cables as far as possible, and the installation efficiency of the optical cable protection groove structure is improved.

Referring to fig. 1 and 2, a non-patterned galvanized plate is used as a supporting tank 1, a polyurethane high polymer material is used as a fireproof core layer 2, an aerogel heat insulation composite material is used as a heat insulation layer 3, and the heat insulation layer 3 is bonded and fixed with the fireproof core layer 2. In the embodiment, the thickness of the non-pattern galvanized plate is 1mm-1.5mm, the thickness of the fireproof core layer 2 is 10mm-15mm, and the thickness of the heat insulation layer 3 is 4mm-6 mm. The non-pattern galvanized sheet comprises: the first zinc coating layer is arranged on the steel plate layer; the first zinc coating and the second zinc coating are respectively positioned on the inner side and the outer side of the steel plate layer. The first zinc coating and the second zinc coating play a double-sided protection role in the steel plate layer, so that the steel plate layer is effectively prevented from being corroded, and the service life of the steel plate is prolonged. The non-pattern galvanized sheet includes a hot-dip galvanized steel sheet and an electrogalvanized steel sheet. The steel sheet is a hot dip galvanized steel sheet, and the steel sheet is dipped into a molten zinc bath, so that a layer of zinc is adhered to the surface of the steel sheet. Compared with an electrogalvanized steel plate, the hot-dip galvanized steel plate has better structural strength and corrosion resistance.

The non-pattern galvanized sheet has the following advantages:

1. the galvanized sheet has wide environmental adaptation and long corrosion prevention time.

2. The treatment cost is low, and the cost of rust prevention of the galvanized plate is lower than that of other paint coatings.

3. The coating is durable, and the standard zinc-plated antirust layer can be maintained for more than 50 years in suburban environments without repair. In urban or offshore areas, a standard zinc plated rust protection layer can be maintained for 20 years without repair.

4. The reliability is good, the galvanized layer and the steel are metallurgically bonded and become a part of the steel surface, so the durability of the plating layer is more reliable.

5. The coating is tough and the zinc coating forms a special metallurgical structure that can withstand mechanical damage during transport and use.

6. The integrity protection, each part of the plated piece can be plated with zinc, and even the dents, sharp corners and hidden positions can be protected comprehensively.

7. Time and labor are saved, the galvanizing process is quicker than other coating construction methods, and the time required for painting on the construction site after installation can be avoided.

The non-pattern galvanized plate has good bending performance and can be bent into different angles according to different requirements.

The polyurethane high molecular polymer is the best environment-friendly energy-saving heat-insulating material recognized in the world at present, and has a plurality of excellent physical properties such as low thermal conductivity, moisture resistance, aging resistance, good temperature resistance, thermosetting property, self-adhesion property and the like. The self-flame-retardant high-fire-retardant polyurethane high polymer material is adopted in the embodiment, integrates all excellent physical properties of polyurethane high polymer, and has the characteristics of flame retardancy, environmental friendliness, low smoke and the like. The self-flame-retardant polyurethane high-molecular polymer is not added with any flame retardant, is green and environment-friendly, and has stable physical properties; the smoke-free; the carbonized layer is formed rapidly when meeting fire, and the compact and strong carbonized layer forms a fire wall to isolate the flame from the outside, so that the flame is not diffused any more.

The aerogel composite material refers to that other materials are uniformly compounded into the aerogel or the aerogel is compounded into the other materials by a certain method, and the performance of the aerogel material is improved by complementation through a compounding mode. The fiber has lower density and higher tensile strength and compressive strength, is a reinforcement material with wide application, the fiber and the aerogel are effectively compounded to obtain the silicon dioxide aerogel composite material which not only keeps the excellent performance of the aerogel, but also has certain mechanical strength, wherein, the addition of the fiber reinforcement provides mechanical support for an aerogel framework, the mechanical property of the aerogel is improved, the elastic modulus of the aerogel material is improved, the excessive shrinkage and the collapse of a hole structure of the gel when the drying is effectively avoided, the aerogel composite material has better moldability and smaller volume shrinkage, the porosity of the composite material is improved, and the density of the material is reduced.

Aerogel insulation composites have the following advantages:

1. the service life is long and can reach more than 20 years.

2. The thermal conductivity is low.

3. Waterproof and moistureproof, and easy to store.

4. The fireproof performance is good, and the safety level is A1 level.

5. The compressive resistance is strong, and the construction can bear brute force.

6. Green, environment-friendly, nontoxic and noncorrosive.

In this application, heat insulation layer 3 can also adopt fire prevention rock wool board, and fire prevention rock wool board uses natural igneous rock etc. as the main materials, through high temperature melting, the cotton that makes with centrifugation etc. uses thermosetting type resin as the panel of binder production. The fireproof rock wool board has the following advantages:

1. high compression resistance, tensile strength and durability indexes, and long-term stability and reliability of product performance are ensured.

2. Rock wool does not burn, does not release heat and toxic smoke, can effectively prevent flame from spreading when a fire disaster occurs, and has excellent fireproof performance.

3. The heat preservation and insulation performance is excellent, the thermal resistance value of the building enclosure structure can be improved, the energy consumption of building heating and air conditioning is reduced, and energy conservation and emission reduction are realized.

4. It has no corrosion to carbon steel, aluminum (alloy), copper and other metal material and various building components.

5. Has the physical characteristics of high-efficiency sound absorption, noise reduction and elastic vibration elimination.

6. No moisture absorption, aging resistance and long-term stable performance.

7. Light weight, can be cut and sawed, and is easy to process.

Referring to fig. 2, as a specific implementation manner of the embodiment of the present invention, a waterproof layer 5 is further disposed on an outer side of the fireproof coating 4, and the waterproof layer 5 is made of aluminum foil fiberglass cloth. In this embodiment, the thickness of the aluminum foil fiberglass cloth is 0.3 mm. The fireproof coating 4 covers the whole outer surface of the support tank body 1. The aluminum foil glass fiber cloth is adhered and fixed on the outer surface of the fireproof coating 4. The aluminum foil cloth is composed of aluminum foil conductive cloth and thermosol. A compact film is formed after a special flame-retardant adhesive is selected for compounding, and the compounded aluminum foil has smooth and flat surface, high light reflectivity, high longitudinal and transverse tensile strength, air impermeability, water impermeability and good sealing performance; has the characteristics of high shielding rate, strong material toughness, low price and the like; can effectively shield the electronic interference generated by any electronic product equipment, and is also a most suitable material for replacing the conductive cloth. The aluminum foil glass fiber cloth is formed by adding glass fibers into aluminum foil cloth. The purpose of adopting aluminium foil glass fiber cloth is on the one hand to play dampproofing and waterproofing's effect to the optical cable, and on the other hand shields the electronic interference of periphery, reduces the interference to optical cable internal signal.

As a specific implementation manner of the embodiment of the invention, please refer to fig. 1 and fig. 2, the thickness ratio of the fireproof core layer 2, the heat insulating layer 3, the supporting groove body 1 and the fireproof coating 4 is 10-15:5:1: 2. The thickness of supporting the cell body 1 can guarantee to support intensity can, and because the density and the material of different inoxidizing coating are different, and in order to guarantee the protective effect, finally confirmed the thickness ratio between a plurality of inoxidizing coatings, make the protective efficiency of every inoxidizing coating reach the biggest. Wherein, adopt the order of arranging of above-mentioned inoxidizing coating, make the thickness of whole inoxidizing coating possible minimum, effectively reduce the self weight of optical cable protection cell body structure, make things convenient for constructor to carry, realized the multilayer protection to the optical cable simultaneously, furthest's reduction high temperature flame pierces through the inoxidizing coating, causes the probability of damage to the optical cable. Polyurethane high-molecular polymer material and aerogel adiabatic composite material that fire prevention sandwich layer 2 and heat insulation layer 3 adopted respectively all have certain elasticity, when the cable explodes, can effectively cushion the shock wave that the explosion produced, play the physical protection effect to the cable.

The invention also provides an optical cable protection device. Referring to fig. 3, the optical cable protection device includes a plurality of optical cable protection groove structures; and a connecting piece 6 is arranged between two adjacent optical cable protection groove body structures, and the connecting piece 6 is respectively connected with the end parts of the two adjacent supporting groove bodies 1. In this embodiment, according to the length of optical cable, splice the protection passageway of optical cable with a plurality of optical cable protection groove body structures. The end faces of adjacent optical cable protection groove structures are mutually matched and abutted, so that the protection channel is sealed.

As a specific implementation manner of the embodiment of the present invention, two optical cable protection groove structures may be buckled together, an optical cable is wrapped in an accommodation space surrounded by the two optical cable protection groove structures, and the two optical cable protection groove structures are fixedly connected by a fastener or a binding rope and serve as an optical cable protection unit. A plurality of optical cable protection units are arranged along the length direction of the optical cable, and two adjacent optical cable protection units are fixedly connected through a connecting piece 6.

As a specific implementation manner of the embodiment of the present invention, please refer to fig. 3, a clamping groove 601 is disposed in the middle of the connecting member 6, two ends of the supporting slot 1 are both provided with a limiting boss 602, and an end surface of the limiting boss 602 is matched with an end surface of the clamping groove 601. In this embodiment, the number of the connecting members 6 is plural, and the connecting members are uniformly arranged along the outer periphery of the support tank body 1. The connecting piece 6 is a rectangular block, so that the processing is convenient, and raw materials are saved. The end face of the limit boss 602 is pressed against the end face of the slot 601, and the end faces of two adjacent support slot bodies 1 are pressed together through the cooperation of the limit boss 602 and the slot 601. The limiting boss 602 is fixed to the support tank 1 by welding.

Referring to fig. 3 and 4, as a specific implementation manner of the embodiment of the present invention, the slot 601 is a U-shaped slot or a dovetail slot. In this embodiment, when the clamping groove 601 is a U-shaped groove, the corresponding limiting boss 602 is a rectangular boss, the clamping groove 601 and the limiting block are easier to process, the processing cost is lower, and the installation of the connecting piece 6 is more convenient. In order to improve the installation efficiency, a guide bevel angle can be processed at the edges of the limiting boss 602 and the clamping groove 601. When the slot 601 is a dovetail slot, the processing cost of the limiting boss 602 and the slot 601 is high, but the limiting effect of the limiting boss 602 and the slot 601 is better.

As a specific implementation manner of the embodiment of the present invention, please refer to fig. 3, a sealing gasket 7 is disposed between two adjacent supporting groove bodies 1. In this embodiment, the sealing gasket 7 is made of a self-flame-retardant high-fire-retardant polyurethane high polymer material with a thickness of 0.5mm to 1 mm. The sealing gasket 7 is adhered to the side surface of the supporting tank body 1. By adding the sealing gasket 7 between the supporting groove bodies 1, the sealing performance between the optical cable protecting groove body structures is improved, and the sealing performance of the environment where the optical cable is located is further ensured.

As a specific implementation manner of the embodiment of the present invention, please refer to fig. 3, threaded holes are respectively formed at two ends of the connecting member 6, jackscrews 603 are installed in the threaded holes, and the jackscrews 603 respectively abut against outer surfaces of two adjacent optical cable protection groove structures. After the clamping groove 601 and the limiting boss 602 of the connecting piece 6 are installed in place, the jackscrew 603 is abutted to the optical cable protection groove body structure, the degree of freedom of the connecting piece 6 is limited, the stability of connection between the connecting piece 6 and the optical cable protection groove body structure is guaranteed, the connecting piece 6 is prevented from displacing under the action of external force, and then the connecting piece 6 is prevented from falling off from the optical cable protection groove body structure.

Referring to fig. 5, as a specific implementation manner of the embodiment of the present invention, two ends of the connecting member 6 are provided with sliders 604, the sliders 604 have a freedom degree of movement in a direction perpendicular to the mounting surface of the connecting member 6, the bottom of the sliders 604 are wedge-shaped, and inclined surfaces of the wedge-shaped structures of the two sliders 604 are oppositely disposed. Wedge blocks 605 matched with the wedge structures of the sliding blocks 604 are correspondingly arranged on the two optical cable protection groove structures. The wedge block 605 is welded and fixed on the optical cable protection groove structure. And a bolt 606 is arranged on the connecting piece 6, the bolt 606 is used for driving the sliding block 604 to move along one side close to the optical cable protection groove body structure, and the sliding block 604 is matched with the wedge block 605, so that two adjacent optical cable protection groove body structures are driven to be close to each other and pressed together.

Compared with the prior art, the optical cable protection device provided by the invention comprises a plurality of optical cable protection groove body structures, wherein the optical cable protection groove body structures are sequentially provided with a fireproof core layer 2, a heat insulation layer 3, a support groove body 1 and a fireproof coating 4 from inside to outside, the optical cable protection groove body structures are fixed on the surface of a channel by means of the support groove body 1, and the inner side of the fireproof core layer 2 is provided with a strip-shaped cavity 201 for accommodating a cable. The optical cable and the cable which are positioned in the same groove are separated by means of the optical cable protection groove body structure, the fireproof, heat insulation and explosion-proof effects on the optical cable are achieved, and the normal operation of power system communication is guaranteed. And a connecting piece 6 is arranged between two adjacent optical cable protection groove body structures, and the connecting piece 6 is respectively connected with the end parts of the two adjacent supporting groove bodies 1. The optical cable protection device strengthens the connection strength between adjacent optical cable protection groove body structures by means of the connecting piece 6, and improves the shock resistance of the optical cable protection device.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.