Expressway electromechanical equipment flat cable fixing device

Abstract

The invention discloses an expressway electromechanical equipment flat cable fixing device which comprises a rectangular base, two U-shaped clamping grooves extending in parallel are formed in the top face of the base, and sliding rails extending in the length direction are arranged on the two sides of the base; uniformly distributed mounting holes are formed in the bottom surface of the base; the U-shaped clamping groove comprises a first side plate, a second side plate and a connecting plate, a cable containing channel is formed between the first side plate and the second side plate, and the first side plate and the second side plate incline outwards by 8-12 degrees relative to the connecting plate to form a horn-shaped opening. An elastic clamping block is arranged in the U-shaped clamping groove, the cross section of the elastic clamping block is wave-shaped, the bottom of the elastic clamping block is fixedly connected with the connecting plate, and the top of the elastic clamping block is provided with an arc-shaped recess in contact with a cable; a slidable adjusting structure is embedded in the sliding rail and comprises a supporting rod perpendicular to the sliding rail, and a pressing plate connected through a hinge is arranged at the tail end of the supporting rod. Locking bolts are arranged between the supporting rods and the sliding rails, positioning holes arranged at intervals are formed in the surfaces of the sliding rails, and the locking bolts penetrate through the supporting rods and are inserted into the positioning holes.

Description

Technical Field

[0001] The present invention relates to the technical field of traffic engineering facilities, and more particularly to a cable arrangement and fixing device for electromechanical equipment of a highway. Background Art

[0002] In existing highway electromechanical equipment wiring systems, the reliability and adaptability of cable fixtures directly impact equipment operational stability. Traditional fixtures often utilize rigid clamp structures, which present the following technical drawbacks: First, the fixed angle of the fixing slot opening can lead to insufficient clamping force and cable slippage when cable diameters vary or when multiple cables need to be bundled. Second, existing adjustment mechanisms often utilize direct bolt fastening, which can easily loosen in vibrating environments and require frequent maintenance. Third, the fixture's installation position is difficult to adjust, often requiring disassembly and repositioning, impacting construction efficiency. Analysis reveals that these issues are primarily due to inefficient structural design: the fixing slot lacks an adaptive clamping structure, unable to compensate for cable size variations; the adjustment mechanism lacks multi-level positioning and self-locking features; and the mounting base lacks a shock-absorbing design, leading to stress concentration. Furthermore, conventional rubber clamps suffer from high hardness and insufficient elastic recovery, making them susceptible to plastic deformation after long-term use. Existing attempts to improve fixing effectiveness have included increasing the number of clamping bolts or employing spring washers, but this increases structural complexity and maintenance costs. Difficulties encountered during the research and development process include: how to achieve stable clamping of cables of multiple sizes without increasing the weight of the structure; how to design a quick adjustment mechanism while ensuring positioning accuracy; and how to improve the vibration resistance of the fixture in complex environments.

[0003] Therefore, there is an urgent need for a highway electromechanical equipment wiring fixture that is highly reliable and can improve construction efficiency. Summary of the Invention

[0004] An object of the present invention is to address at least the above-mentioned drawbacks and to provide at least the advantages which will be described hereinafter.

[0005] In order to achieve these objects and other advantages of the present invention, the present invention provides a cable fixing device for electromechanical equipment on a highway, comprising: a rectangular base, the top surface of the base being provided with two parallel U-shaped slots, and two sides of the base being provided with slide rails extending in the length direction; the bottom surface of the base being provided with evenly distributed mounting holes, the mounting holes being provided with lock nuts, and a spring washer being provided between the lock nuts and the bottom surface of the base; the U-shaped slot comprising a first side plate, a second side plate and a connecting plate, a cable accommodating channel being formed between the first side plate and the second side plate, and the first side plate and the second side plate being inclined outwardly by 8 to 1 relative to the connecting plate 2 degrees to form a trumpet-shaped opening; an elastic clamping block is provided in the U-shaped slot, the cross section of the elastic clamping block is wavy, the bottom of the elastic clamping block is fixedly connected to the connecting plate, and the top is provided with an arc-shaped depression in contact with the cable; a slidable adjustment structure is embedded in the slide rail, and the adjustment structure includes a support rod perpendicular to the slide rail, and a pressure plate connected by a hinge is provided at the end of the support rod; a locking bolt is provided between the support rod and the slide rail, and positioning holes arranged at intervals are provided on the surface of the slide rail, and the locking bolt passes through the support rod and is inserted into the positioning hole; wherein, the spacing of the positioning holes is 5~6mm, and the height of the limiting boss is 3~4mm.

[0006] Preferably, the wavy cross-section of the elastic clamp includes alternating peaks and troughs, the peak spacing is 6~7mm, and the trough depth is 1.2~1.8mm; the top of the peak is provided with axially extending anti-slip grooves, and the anti-slip groove spacing is 0.8~1mm; the material of the elastic clamp is rubber with an added mass fraction of 18~22% silicon carbide whiskers, and the Shore hardness is 58~62A.

[0007] Preferably, the relationship between the curvature radius R of the arc-shaped recess at the top of the elastic clamping block and the nominal diameter d of the cable is R=0.6d±0.05mm, and the surface of the arc-shaped recess is provided with diamond-shaped anti-slip protrusions with a protrusion height of 0.2~0.4mm and a density of 20~30 / cm².

[0008] Preferably, the slide rail is embedded with a magnetorheological fluid layer, which contains carbonyl iron powder particles with a particle size of 6-8 μm; the bottom of the support rod is integrated with an electromagnetic coil, and when the electromagnetic coil is energized, the viscosity of the magnetorheological fluid increases to 60-80 kPa·s.

[0009] Preferably, the hinge between the pressure plate and the support rod is a flexible silicone structure, the Shore hardness of which decreases continuously from 55A at the base of the hinge to 40A at the end, so that the pressure plate can adaptively deflect within the range of 0-60°.

[0010] Preferably, the first side panel and the second side panel are tilted outward by 5 to 15 degrees relative to the connecting panel to form a trumpet-shaped opening; an arc-shaped depression is provided in the middle of the connecting panel, the depression depth is 1.5 to 3 mm, and a transverse reinforcing rib is provided at the bottom of the arc-shaped depression; the top edges of the first side panel and the second side panel are provided with a guide chamfer, and the chamfer angle is 30 to 45 degrees.

[0011] Preferably, the magnetorheological fluid layer is also dispersed with a nano-silica dispersant having a mass fraction of 0.8~1.0%, the surface of the nano-silica is modified with aminosilane, the average particle size is 30~40nm, and the particle size ratio to the carbonyl iron powder particles is 1:150~1:180; when the working current of the electromagnetic coil is 0.5~1.0A, the viscosity of the magnetorheological fluid increases from the initial value of 200~300mPa•s to 60~80kPa•s within 50ms, and recovers to 102~108% of the initial viscosity within 80~120ms after power failure; the sedimentation rate of the magnetorheological fluid when left at 25°C for 24 hours is less than 4%, and the viscosity change rate does not exceed ±5% after 20 cycles of temperature from -20°C to 80°C.

[0012] Preferably, the flexible silicone structure is dispersed with 3-5% by mass of oriented carbon nanotube bundles, the axial direction of the carbon nanotube bundle forms an angle of 15-30° with the extension direction from the root to the end of the hinge, the length of a single carbon nanotube bundle is 50-80 μm and the diameter distribution is 20-40 nm; the thickness of the hinge cross section continuously decreases from 2.5-3 mm at the root to 1.2-1.8 mm at the end, and bionic honeycomb micropores with a pore size of 100-300 μm are embedded in the thickness direction, and the micropore density increases gradually from 5-8 / mm² at the root to 12-15 / mm² at the end.

[0013] Preferably, the bottom of the elastic clamp forms a molecular-level bonding interface with the arc-shaped depression of the connecting plate through a hot vulcanization bonding process, the bonding layer has a thickness of 0.2~0.5mm and contains a directionally arranged carbon fiber reinforcement phase, and the axial direction of the carbon fiber forms an angle of 45° with the extension direction of the wavy wave peak of the elastic clamp.

[0014] Preferably, in the hot vulcanization bonding process, the carbon fiber reinforcement phase is oriented by magnetic field-assisted control, and the surface of the carbon fiber is coated with a Fe3O4 coating with a thickness of 50~100nm, forming a precise orientation of 45°±2° under the action of a 0.5~1.2T gradient magnetic field; the bonding layer is provided with self-healing microcapsules with a particle size of 20~50μm, which contain a two-component epoxy resin repair agent. When the interface crack extends to the microcapsule, the repair agent is released to form a three-dimensional cross-linked network.

[0015] Advantages of the present invention: Firstly, the cable arrangement and fixing device for electromechanical equipment of the highway of the present invention makes cable introduction smoother through the trumpet-shaped opening design, the wavy elastic clamping block provides progressive clamping force, the positioning holes with a spacing of 5 to 6 mm realize precise position adjustment, and the spring gasket effectively absorbs vibration energy, thereby comprehensively improving the fixing reliability and construction efficiency.

[0016] Secondly, the silicon carbide whisker reinforced rubber matrix in the highway electromechanical equipment wiring fixture of the present invention makes the elastic clamping block have both high elasticity and wear resistance, the peak and valley structure increases the contact area, and the axial anti-skid groove improves the anti-skid coefficient by more than 15%.

[0017] In addition, the curvature of the arc-shaped depression in the cable arrangement and fixing device for electromechanical equipment of the highway of the present invention matches the cable diameter, increasing the contact area by 30%, and the diamond-shaped protrusions produce a microscopic bite effect, and the dynamic friction coefficient is increased to 0.45~0.55.

[0018] In addition, the viscosity of the magnetorheological fluid in the highway electromechanical equipment wiring fixture of the present invention increases by more than 200 times after power is applied, forming a quasi-solid support layer, and the anti-slip force increases by 3 to 5 times.

[0019] In addition, the gradient hardness silicone hinge in the highway electromechanical equipment wiring fixture of the present invention achieves 60° adaptive deflection, meeting the requirements of complex wiring angles, and extending the fatigue life to more than 100,000 times.

[0020] In addition, the reinforcing ribs in the highway electromechanical equipment wiring fixture of the present invention increase the bending strength of the connecting plate by 40%, and the guide chamfer reduces the cable surface wear rate by 15%.

[0021] In addition, the nano-silicon dioxide in the highway electromechanical equipment wiring fixture of the present invention improves the dispersion stability of the magnetorheological fluid, reduces the sedimentation rate to below 4%, and extends the temperature adaptability to -20~80℃.

[0022] In addition, the oriented carbon nanotube bundles in the highway electromechanical equipment wiring fixture of the present invention increase the tensile strength of the hinge by 80%, and the honeycomb microporous structure makes the stress distribution more uniform.

[0023] In addition, the magnetic field in the highway electromechanical equipment wiring fixture of the present invention assists in forming a 45° reinforced carbon fiber network, which increases the interface bonding strength by 50% and significantly improves the anti-peeling performance.

[0024] Furthermore, the self-healing microcapsules in the highway electromechanical equipment wiring fixture of the present invention realize automatic repair of cracks, thereby improving the retention rate of interface strength after repair. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 A schematic structural diagram of a cable arrangement and fixing device for electromechanical equipment on a highway according to the present invention; Figure 2 It is a structural schematic diagram of the elastic clamp block in the cable arrangement and fixing device for electromechanical equipment of highway according to the present invention.

[0026] In the figure, a rectangular base 1, a U-shaped slot 11, a first side plate 111, a second side plate 112, a connecting plate 113, a slide rail 12, a mounting hole 13, an elastic clamping block 2, an adjustment structure 3, a support rod 31, and a pressing plate 32. DETAILED DESCRIPTION

[0027] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments so that those skilled in the art can implement the invention with reference to the description.

[0028] It should be understood that terms such as “having”, “including” and “comprising” used herein do not preclude the existence or addition of one or more other elements or combinations thereof.

[0029] It should be noted that the experimental methods described in the following embodiments are conventional methods unless otherwise specified, and the reagents and materials can be obtained from commercial channels unless otherwise specified.

[0030] In the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected" and "set" should be understood in a broad sense. For example, they can be fixedly connected or set, or detachably connected or set, or connected or set as a whole. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. The orientations or positional relationships indicated by the terms "transverse", "longitudinal", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention.

[0031] Figure 1The present invention shows an embodiment of a cable fixing device for electromechanical equipment on a highway, comprising: a rectangular base 1, the top surface of the base being provided with two parallel U-shaped slots 11, and two sides of the base being provided with slide rails 12 extending in the length direction; the bottom surface of the base being provided with evenly distributed mounting holes 13, the mounting holes 13 being provided with locknuts, and a spring washer being provided between the locknuts and the bottom surface of the base; the U-shaped slot 11 comprising a first side plate 111, a second side plate 112 and a connecting plate 113, a cable accommodating channel being formed between the first side plate 111 and the second side plate 112, and the first side plate 111 and the second side plate 112 being inclined outwardly by 8 to 1 relative to the connecting plate 113 2 degrees to form a trumpet-shaped opening; an elastic clamp block 2 is provided in the U-shaped slot 11, the cross section of the elastic clamp block 2 is wavy, the bottom of which is fixedly connected to the connecting plate 113, and the top is provided with an arc-shaped depression in contact with the cable; a slidable adjustment structure 3 is embedded in the slide rail 12, and the adjustment structure 3 includes a support rod 31 perpendicular to the slide rail 12, and a pressure plate 32 connected by a hinge is provided at the end of the support rod 31; a locking bolt is provided between the support rod 31 and the slide rail 12, and positioning holes arranged at intervals are provided on the surface of the slide rail 12, and the locking bolt passes through the support rod 31 and is inserted into the positioning hole; wherein, the spacing of the positioning holes is 5~6mm, and the height of the limiting boss is 3~4mm.

[0032] Specifically, in this embodiment, the rectangular base is extruded from 6063-T5 aluminum alloy, measuring 600 mm in length, 80 mm in width, and 25 mm in height. Two parallel U-shaped slots are machined onto the top surface, with a spacing of 40 mm. The U-shaped slot consists of a first side panel, a second side panel, and a connecting plate, with the side panels tilted outward at 10° to form a bell mouth. The elastic clamp is injection molded, with the bottom vulcanized and bonded into the groove of the connecting plate. The top arc-shaped recess has a curvature radius of R = 0.6d. The guide rails are arranged along the length of the base, and the built-in adjustment structure allows for sliding along the guide rails. The support rods are made of 304 stainless steel with a diameter of 8 mm, and the end pressure plates are connected via silicone hinges. The locking bolts are M5 hexagon socket screws, which cooperate with the guide rail positioning holes to achieve 5 mm step adjustment. An 8.8-grade anti-loosening nut is installed in the mounting hole 102, which is used in conjunction with a spring washer to achieve a seismic-resistant connection. During actual installation, the construction personnel first secure the base in the predetermined position through the mounting hole, and then guide the cables into the slot through the bell-shaped opening. The wavy structure of the elastic clamp deforms radially when compressed, creating multiple points of contact between the crests and the cable surface. The angled side panels allow for moderate elastic deformation to compensate for variations in cable diameter. As the adjustment mechanism moves along the rails, locking bolts quickly insert into various positioning holes to secure the position. A pressure plate at the end of the support rod provides additional pressure on the cable bundle. This structure ensures quick installation and secure cable retention, making it particularly suitable for installations requiring frequent adjustments to wiring positions.

[0033] Furthermore, in another embodiment, the wavy cross-section of the elastic clamp block 2 includes alternating peaks and troughs, the peak spacing is 6~7mm, and the trough depth is 1.2~1.8mm; the top of the peak is provided with axially extending anti-slip grooves, and the anti-slip groove spacing is 0.8~1mm; the material of the elastic clamp block 2 is rubber with an added mass fraction of 18~22% silicon carbide whiskers, and the Shore hardness is 58~62A.

[0034] In this embodiment, specifically, the anti-slip pattern is processed by laser engraving. The material formula is 60% natural rubber, 20% silicon carbide whiskers, and 2% vulcanizer. After mixing in an internal mixer, it is vulcanized at 170°C. In the production process of the elastic clamp, the silicon carbide whiskers are evenly mixed with the rubber matrix after surface treatment and then vulcanized at high temperature in the mold. The anti-slip pattern on the crest part is formed by precision mold etching, and the pattern direction is perpendicular to the cable axis to enhance the anti-slip effect. Actual tests show that when the clamp is subjected to a radial pressure of 10N, it can generate a static friction force of 35N, which is about 45% higher than that of traditional rubber clamps. Long-term aging tests show that the addition of silicon carbide whiskers reduces the permanent compression deformation rate of the material to 12%, which is much better than the 25% deformation rate of conventional rubber.

[0035] Furthermore, in another embodiment, the relationship between the curvature radius R of the arc-shaped recess at the top of the elastic clamp 2 and the nominal diameter d of the cable is R=0.6d±0.05mm, and the surface of the arc-shaped recess is provided with diamond-shaped anti-slip protrusions with a protrusion height of 0.2~0.4mm and a density of 20~30 / cm².

[0036] Specifically, in this embodiment, the diamond-shaped protrusions on the curved recessed surface are manufactured using micro-nano manufacturing technology. Each protrusion has a pyramidal structure with a base side length of 0.2mm. During cable installation, the tip of the protrusion deforms locally and embeds into the surface of the cable sheath, creating a mechanical interlocking effect. During dynamic vibration testing, the fixture equipped with these protrusions can control cable displacement to within 0.3mm, a 65% reduction compared to a flat structure. Furthermore, the diamond-shaped arrangement ensures that the protrusions participate in friction in all directions, preventing the cable from rotating and sliding.

[0037] Furthermore, in another embodiment, the slide rail 12 is embedded with a magnetorheological fluid layer, which contains carbonyl iron powder particles with a particle size of 6 to 8 μm; the bottom of the support rod is integrated with an electromagnetic coil, and when the electromagnetic coil is energized, the viscosity of the magnetorheological fluid increases to 60 to 80 kPa·s.

[0038] Specifically, in this implementation, the control circuit for the magnetorheological fluid system is integrated within the support rod, using pulse-width modulation to adjust the electromagnetic field strength. When abnormal vibration is detected, the control system automatically energizes, instantaneously increasing the viscosity of the magnetorheological fluid and forming a rigid support. Measured data shows that the lateral shear resistance of the regulating structure reaches 850N in the energized state, 4.2 times that of the unenergized state. This system is particularly suitable for sections of road with frequent vibration, such as bridges, and can effectively suppress micro-wear of cables.

[0039] Furthermore, in another embodiment, the hinge between the pressure plate 32 and the support rod 31 is a flexible silicone structure, and its Shore hardness decreases continuously from 55A at the root of the hinge to 40A at the end, so that the pressure plate can adaptively deflect in the range of 0~60°.

[0040] Specifically, in this implementation, the silicone hinge is manufactured using a layered injection molding process, achieving a gradual hardness change by controlling the vulcanization temperature gradient. The carbon nanotube bundles are oriented by the electric field during the injection molding process, significantly improving the hinge's bending resistance. In actual use, the pressure plate can adapt to the undulating shape of the cable bundle, freely deflecting within a 60° range without causing stress concentration. Accelerated aging tests have shown that the hinge maintains good flexibility even at -40°C, with a bending lifespan of over 150,000 cycles.

[0041] Furthermore, in another embodiment, the first side panel 111 and the second side panel 112 are tilted outward by 5 to 15 degrees relative to the connecting panel 113 to form a trumpet-shaped opening; an arc-shaped depression is provided in the middle of the connecting panel 113, the depression depth is 1.5 to 3 mm, and a transverse reinforcing rib is provided at the bottom of the arc-shaped depression; the top edges of the first side panel 111 and the second side panel 112 are provided with a guide chamfer, and the chamfer angle is 30 to 45 degrees.

[0042] In this implementation scheme, specifically, a 2mm deep arc-shaped depression is formed in the middle of the connecting plate by precision stamping, and transverse reinforcing ribs are arranged every 15mm in the recessed area. The cross-section of the reinforcing rib is trapezoidal, with a bottom width of 3mm, a top width of 1.5mm, and a height of 1.2mm, which effectively improves the bending stiffness of the connecting plate. The 40° guide chamfer on the top of the side panel is processed with a double-edged milling cutter, and the roughness of the chamfer surface is controlled below Ra1.6. During actual installation, the friction force of the cable introduction process is reduced by 38%. At the same time, finite element analysis shows that the reinforcing ribs reduce the deformation of the connecting plate from 1.2mm to 0.7mm when it is subjected to a lateral force of 50N. This design is particularly suitable for large-span cable duct sections and can effectively prevent deformation of the duct body due to its own weight.

[0043] Furthermore, in another embodiment, the magnetorheological fluid layer is also dispersed with a nano-silica dispersant having a mass fraction of 0.8~1.0%, the surface of the nano-silica is modified with aminosilane, and its average particle size is 30~40nm, and the particle size ratio to the carbonyl iron powder particles is 1:150~1:180; when the working current of the electromagnetic coil is 0.5~1.0A, the viscosity of the magnetorheological fluid increases from the initial value of 200~300mPa•s to 60~80kPa•s within 50ms, and recovers to 102~108% of the initial viscosity within 80~120ms after power failure; the sedimentation rate of the magnetorheological fluid when standing at 25°C for 24 hours is less than 4%, and the viscosity change rate after 20 cycles of temperature from -20°C to 80°C does not exceed ±5%.

[0044] In this embodiment, specifically, the magnetorheological fluid system is nano-modified to improve stability. During preparation, 35nm silica modified with aminosilane and carbonyl iron powder are dispersed in a synthetic ester base liquid in proportion and treated with an ultrasonic homogenizer for 2 hours. After the finished product was left to stand at 25°C for 30 days, the sedimentation rate was detected by a laser particle size analyzer and showed that it was only 3.5%. In the temperature cycle test, after 20 cycles from -20°C to 80°C, the viscosity fluctuation range of the magnetorheological fluid was controlled within ±4.8%. In actual applications, the electromagnetic coil is powered by a constant current of 0.75A, the system response time is 58ms, and the magnetorheological fluid returns to a flow state within 105ms after power failure, ensuring that the adjustment mechanism can be quickly locked and flexibly adjusted.

[0045] Furthermore, in another embodiment, the flexible silicone structure is dispersed with 3-5% by mass of oriented carbon nanotube bundles, the axial direction of the carbon nanotube bundle forms an angle of 15-30° with the extension direction from the root to the end of the hinge, the length of a single carbon nanotube bundle is 50-80 μm and the diameter distribution is 20-40 nm; the thickness of the hinge cross section continuously decreases from 2.5-3 mm at the root to 1.2-1.8 mm at the end, and bionic honeycomb micropores with a pore size of 100-300 μm are embedded in the thickness direction, and the micropore density increases gradually from 5-8 / mm² at the root to 12-15 / mm² at the end.

[0046] In this embodiment, the carbon nanotube bundle 431 is 60 μm long and oriented at a 25° angle. The hinge section features gradient micropores with a pore diameter of 200 μm at the base and 100 μm at the end. Dynamic load testing demonstrates an 85% increase in tear strength and a 40% improvement in energy absorption efficiency.

[0047] Furthermore, in another embodiment, the bottom of the elastic clamp 2 forms a molecular-level bonding interface with the arc-shaped depression of the connecting plate through a hot vulcanization bonding process. The bonding layer has a thickness of 0.2~0.5mm and contains a directionally arranged carbon fiber reinforcement phase. The axial direction of the carbon fiber forms an angle of 45° with the extension direction of the wavy wave peak of the elastic clamp.

[0048] In this embodiment, the adhesive layer is formed using a magnetic field-assisted method, with carbon fibers oriented at a 45° angle under a 0.8 T magnetic field. The layer is 0.3 mm thick and contains 35 μm self-healing microcapsules. Three-point bending tests show an interfacial peel strength of 8.5 MPa and a 60% reduction in crack growth rate.

[0049] Furthermore, in another embodiment, in the hot vulcanization bonding process, the carbon fiber reinforcement phase is oriented by magnetic field-assisted control, and the surface of the carbon fiber is coated with a Fe3O4 coating with a thickness of 50~100nm, forming a precise orientation of 45°±2° under the action of a 0.5~1.2T gradient magnetic field; the bonding layer is provided with self-healing microcapsules with a particle size of 20~50μm, which contain a two-component epoxy resin repair agent. When the interface crack extends to the microcapsule, the repair agent is released to form a three-dimensional cross-linked network.

[0050] In this embodiment, specifically, the bonding interface is enhanced with the assistance of a magnetic field. During construction, after applying the adhesive containing Fe3O4-coated carbon fibers, a 0.9T gradient magnetic field is applied for 20 minutes to cross-arrange the fibers at 45°. The tensile test of the cured bonding layer showed that the peel strength reached 9.2MPa, which is 55% higher than that of the randomly distributed structure. The self-healing microcapsules are prepared by in-situ polymerization. The shell material is melamine resin, and the core material contains epoxy resin and latent curing agent. When a crack with a width of more than 50μm occurs at the interface, the microcapsule ruptures and releases the repair agent. After 24 hours of self-repair, the interface strength recovers to 87% of the original value. This technology significantly extends the service life of the elastic clamp.

[0051] Although the embodiments of the present invention have been disclosed above, they are not limited to the applications listed in the specification and embodiment. They can be applied to various fields suitable for the present invention. For those familiar with the art, additional modifications can be easily realized.

Claims

1. A cable fixing device for electromechanical equipment on highways, characterized in that: include: A rectangular base with two parallel U-shaped slots on the top and slide rails extending along the length on both sides of the base; evenly distributed mounting holes on the bottom of the base with locknuts in the mounting holes and spring washers between the locknuts and the bottom of the base; The U-shaped slot includes a first side plate, a second side plate and a connecting plate, wherein a cable accommodating channel is formed between the first side plate and the second side plate, and the first side plate and the second side plate are inclined outwardly by 8 to 12 degrees relative to the connecting plate to form a trumpet-shaped opening; An elastic clamping block is provided in the U-shaped slot. The cross section of the elastic clamping block is wavy, the bottom of the elastic clamping block is fixedly connected to the connecting plate, and the top of the elastic clamping block is provided with an arc-shaped recess for contacting the cable. The slide rail is embedded with a slidable adjustment structure, which includes a support rod perpendicular to the slide rail, and a pressure plate connected to the end of the support rod by a hinge; a locking bolt is provided between the support rod and the slide rail, and positioning holes arranged at intervals are provided on the surface of the slide rail, and the locking bolt passes through the support rod and is inserted into the positioning hole; Among them, the spacing of the positioning holes is 5~6mm, and the height of the limiting boss is 3~4mm.

2. The cable arrangement and fixing device for electromechanical equipment on a highway as claimed in claim 1, characterized in that: The wavy cross-section of the elastic clamp includes alternating peaks and troughs, with a peak spacing of 6 to 7 mm and a trough depth of 1.2 to 1.8 mm; the top of the peak is provided with axially extending anti-slip grooves, with a spacing of 0.8 to 1 mm; the material of the elastic clamp is rubber with an added mass fraction of 18 to 22% silicon carbide whiskers, and a Shore hardness of 58 to 62A.

3. The cable arrangement and fixing device for electromechanical equipment on a highway as claimed in claim 1, characterized in that: The relationship between the curvature radius R of the arc-shaped depression at the top of the elastic clamping block and the nominal diameter d of the cable is R=0.6d±0.05mm. The surface of the arc-shaped depression is provided with diamond-shaped anti-slip protrusions with a protrusion height of 0.2~0.4mm and a density of 20~30 / cm².

4. The cable arrangement and fixing device for electromechanical equipment on a highway according to claim 1, characterized in that: The slide rail is embedded with a magnetorheological fluid layer containing carbonyl iron powder particles with a particle size of 6 to 8 μm. The bottom of the support rod is integrated with an electromagnetic coil. When the electromagnetic coil is energized, the viscosity of the magnetorheological fluid increases to 60 to 80 kPa·s.

5. The cable arrangement and fixing device for electromechanical equipment on a highway as claimed in claim 1, characterized in that: The hinge between the pressure plate and the support rod is a flexible silicone structure, and its Shore hardness decreases continuously from 55A at the base of the hinge to 40A at the end, so that the pressure plate can self-adaptively deflect within the range of 0-60 degrees.

6. The cable arrangement and fixing device for electromechanical equipment on a highway as claimed in claim 1, characterized in that: The first side panel and the second side panel are tilted outward by 5 to 15 degrees relative to the connecting panel to form a trumpet-shaped opening; an arc-shaped depression is provided in the middle of the connecting panel, the depression depth is 1.5 to 3 mm, and a transverse reinforcing rib is provided at the bottom of the arc-shaped depression; the top edges of the first side panel and the second side panel are provided with a guide chamfer, and the chamfer angle is 30 to 45 degrees.

7. The cable arrangement and fixing device for electromechanical equipment on a highway as claimed in claim 4, characterized in that: The magnetorheological fluid layer also contains 0.8-1.0% by mass of a nano-silica dispersant, the surface of which is modified with aminosilane, and the average particle size of the nano-silica is 30-40 nm, and the particle size ratio of the nano-silica to the carbonyl iron powder particles is 1:150-1:180; When the working current of the electromagnetic coil is 0.5-1.0A, the viscosity of the magnetorheological fluid increases from an initial value of 200-300mPa·s to 60-80kPa·s within 50ms, and recovers to 102-108% of the initial viscosity within 80-120ms after power failure. The magnetorheological fluid has a sedimentation rate of less than 4% when left standing at 25° C. for 24 hours, and a viscosity change rate of no more than ±5% after 20 cycles of temperature from -20° C. to 80° C.

8. The cable arrangement and fixing device for electromechanical equipment on a highway as claimed in claim 5, characterized in that: The flexible silicone structure is dispersed with 3-5% by mass of aligned carbon nanotube bundles, the axial direction of the carbon nanotube bundles forming an angle of 15-30° with the extension direction from the hinge root to the end, the length of a single carbon nanotube bundle is 50-80 μm and the diameter distribution is 20-40 nm; The thickness of the hinge section decreases continuously from 2.5-3 mm at the root to 1.2-1.8 mm at the end, and bionic honeycomb micropores with a pore size of 100-300 μm are embedded in the thickness direction. The micropore density increases gradually from 5-8 / mm² at the root to 12-15 / mm² at the end.

9. The cable arrangement and fixing device for electromechanical equipment on a highway as claimed in claim 1, characterized in that: The bottom of the elastic clamp forms a molecular-level bonding interface with the arc-shaped depression of the connecting plate through a hot vulcanization bonding process. The bonding layer has a thickness of 0.2~0.5mm and contains a directionally arranged carbon fiber reinforcement phase. The axial direction of the carbon fiber forms a 45° angle with the extension direction of the wavy peak of the elastic clamp.

10. The highway electromechanical equipment wiring fixture as claimed in claim 9, characterized in that: In the hot vulcanization bonding process, the carbon fiber reinforcement phase is oriented by magnetic field-assisted control. The carbon fiber surface is coated with a Fe3O4 coating with a thickness of 50-100 nm, and a precise orientation of 45°±2° is formed under the action of a 0.5-1.2T gradient magnetic field. The adhesive layer is provided with self-healing microcapsules with a particle size of 20 to 50 μm, which contain a two-component epoxy resin repair agent. When the interface crack extends to the microcapsule, the repair agent is released to form a three-dimensional cross-linked network.

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