Convenience of cable laying | The cable is easy to be pulled when laying on it | No cable strain 1. Description of composite cable support: SMC composite cable support is a kind of sheet molded plastic made of resin paste impregnated glass fiber. It has the advantages of high strength, good toughness, corrosion resistance, high insulation, good flame retardancy, and long service life. Its technical indicators exceed those of similar products (such as iron, plastic, wood support, etc.). At the same time, the product has significant characteristics: anti-theft; Equipped with fixed device and anti overturning; Strong bearing force and good safety; Convenient and beautiful; Environmental protection, etc.
In life, people usually call cable supports glass fiber reinforced plastic cable supports, composite cable supports, cable trench supports, etc. Material description of composite cable support ： S/N | raw material | remarks | effect | one | resin | Unsaturated polyester resin low shrinkage agent | High adhesion | two | Alkali free glass fiber | Directed randomization | Strengthen firmness | three | filler | Inorganic filling material | Strengthening hardness | four | auxiliary | Curing agent, colorant, etc | Beautify the appearance |
Appearance quality: no exposed fiber, crack, delamination, obvious uneven color and clear mark on the surface 2. Guaranteed value of technical parameters of Xiangyang Houde S/N | name | Provide value | one | Tensile strength (Mpa) | ≥160 | two | Bending strength (MPa) | ≥100 | three | Bending modulus of elasticity (MPa) | ≥5000 | four | Bending strength after immersion (MPa) | ≥150 | five | Volume resistivity (Ω. cm) | ≥1×10 twelve | six | Impact toughness (kJ/m2) | ≥25 | seven | Water absorption (%) | ＜0.2 | eight | Hot deformation temperature (℃) | ＞200 | nine | Density (g/cm ³) | ＜2 | ten | Fire rating | Grade B1 | eleven | fiber content | ≥15% | twelve | insulation resistance | ≥1.0*10 twelve Ω | thirteen | Oxygen index | ≥70 | fourteen | carrying capacity | Uniform working load: 90 kg | Instantaneous large uniform load: 300 kg |
Note: Composite cable support The oxygen index of is in line with the national safety requirements of fire prevention, low smoke, halogen-free and harmless. The safety factor is 1.67. three 、 Hubei Xiangyang Houde composite cable support Production process
1. Procurement of initial raw materials
The initial raw materials of the cable support are all from well-known enterprises in the industry, and each batch of raw materials must be provided with the factory inspection report of the raw materials, so as to ensure the product quality from the raw materials.
(In order to reduce costs, workshop type raw materials are generally used by workshop enterprises without reliable inspection methods and raw material quality inspection reports)
2. Fabrication of cable support materials
The materials used for the cable support produced by our company are all internal ingredients, not purchased from outside. Each ingredient step is recorded, which not only controls the cost, but also further controls the product quality.
(The workshop enterprise, whose qualification is not up to standard, purchases cheap materials from outside in order to save the cost of processing equipment)
3. Fabrication of finished cable support
Our company has professional molding equipment and operators. The employees implement regular training and assessment, and a responsibility system to ensure that every molded product is qualified.
(The workshop enterprises, in order to take a shortcut, not only purchase raw materials, but also process them outside. Because the equipment cost is very large, is the quality of such products reliable?)
4. Factory inspection of cable support
The cable support of our company must pass the bearing test before leaving the factory, and can be packed only after passing the test (professional multi-function testing machine). Each batch of materials is numbered to ensure that quality problems can be found and handled in a timely manner. 4. Installation instructions for Xiangyang Houde composite cable support: 1. Install the expansion bolt (M10x100mm or 120mm) fixing the cable support into the trench wall according to the design requirements.
2. Take out the cable support column from the product packaging box
3. Install and fix cable support column and expansion bolt fixed on trench wall in sequence
4. Take out the cable support bracket from the product packaging box and insert it into the column slot, so that the upper hole of the bracket is aligned with the existing hole on the side of the column slot 5. Use the connecting pin to bolt through the column and bracket hole, and then seal the two ends of the connecting pin. Method 1: fix the sleeve and glue the two ends of the connecting bolt; Method 2: Pin fixing sleeve is used to fix both ends of the connecting pin.
6. The supporting arm can be lifted when laying the cable, which enlarges the construction site and facilitates the operation of construction personnel
7. Gently place the cable on the bracket arm, and lay it flat and beautiful
8 Fix and bind the cable on the corbel with a tie and clean the site later matters needing attention:
1. It is forbidden to stand on the corbel for a long time or as other supports outside the cable.
2. During cable laying, it is not allowed to drop the cable from a high place, and try to place it gently on the support.
3. During laying and maintenance, it is not allowed to pull the cable on the support, and effective measures should be taken to avoid lateral force on the support products.
4. When local cables need to be adjusted, the cables shall be moved to the root of the support and dragged as far as possible, or the cables to be adjusted between the supports shall be lifted and slowly forced to avoid overload construction. Installation: applicable to various cable laying places, with adjustable floor height and movable turning of the bracket arm, which is convenient for on-site installation and cable laying construction. It can be cut and adjusted according to the site installation position to ensure that the product can adapt to different installation positions. 5. Advantages of Xiangyang Houde composite cable support: 1. High strength and good designability The composite material is mainly composed of glass fiber and thermosetting resin for bonding and load transfer. The tensile strength of glass fiber is very high (3450 mpa), and its content, length and laying form determine the strength of support products. The strength of thermosetting glass fiber reinforced composites can be in the range of 30-1000 mpa. Therefore, we design the amount, length and laying form of glass fiber according to the stress, output, production process and price tolerance of the product. 2. No creep The rigidity of the thermosetting composite bracket is twice that of the fiber reinforced nylon bracket produced by a company in the United States. Even under long-term load, it will not deform, nor will it tilt down like the metal cable support used in some domestic cities. 3. Fire prevention According to the use requirements, the oxygen index of the composite cable support we developed is greater than or equal to 70%. Meet the safety requirements of fire prevention, low smoke, halogen-free and harmless. The fire resistance performance is higher than the technical specification (oxygen index is 52%) of "underground * * * glass fiber plastic cable tray board for Baodao", and much higher than the reinforced thermoplastic support of a company in the United States. This indicator is no less than the indicator of the composite fire resistance standard for new vehicles of Hong Kong Metro certified by the British BS. 4. Corrosion resistance The composite support is corrosion resistant, especially suitable for use in humid, salt fog, acid and weak alkali environments. 5. Electrical insulation The insulation performance can be adjusted according to the use requirements. a) Electrical insulation type, with insulation resistance greater than 1000G Ω; b) Antistatic type, surface resistance less than 10G Ω. 6. Easy to use, accurate and firm positioning, and very convenient construction. 7. Service life: 50 years underground and 20 years above ground. Suitable ambient temperature range: - 50 ℃ - 130 ℃ 8. Anti theft: the composite material has no recycling value, so the theft is eliminated. 6. Comparison between composite cable support and angle iron support Angle iron support is usually made of angle iron sections through welding or joint assembly of fasteners. The production process of traditional angle iron bracket is characterized by large energy consumption, multiple processes, long cycle, and product quality can not be guaranteed. In many harsh environments, such as subways, tunnels, chemical enterprises, rainy and humid places or coastal salt fog, the use of angle iron supports is very easy to rust, and the maintenance cost of equipment is high and the service life is short. All aspects of performance | Hot galvanized angle steel support | Smc composite support | Price combination | Hot dip galvanized grounding round steel angle | France and bracket (stainless steel expansion bolt; determined by installation method) | Corrosion Resistance | In general, the anti-corrosion work after installation and welding is difficult to do well, which is prone to corrosion, causing the cable and support to fall into the cable trench together, bringing some difficulties to the future expansion work (if there is water in the cable trench, it is more troublesome). | Good, corrosion resistant. Acid and alkali resistant, rust free, maintenance free (but the manufacturer needs to issue the certification of a national authoritative testing agency) | service life | 5-10 years | It is the same as the design life of the substation, about 30~50 years (but the manufacturer needs to issue the aging report of a national influential testing agency) | Bearing capacity | ~90kg | 200kg | Installation mode | Welded and fixed with embedded shoulder steel | Expansion bolts or embedded type shall be used for fixation. (The combined installation method is adopted, and the installation is simple and fast). | Subsequent work after installation | It needs to be connected with grounding round steel or copper plate | No, | Convenience of cable laying | The cable is easy to be pulled when laying on it | The cable will not be damaged (the surface of the composite support is smooth, the friction coefficient is small, and the cable will not be damaged.) | Conductivity | Conductive, but need to add grounding round steel or copper plate | Non conductive (The composite support itself is insulated and free of electrical corrosion, which can prevent eddy currents. It does not need grounding.) | Fire resistance | Easily deformed at high temperature | It is not easy to deform at high temperature (composite support can be used at - 50 ℃ - 130 ℃) | Anti-theft property | No anti-theft, with recycling value | Anti theft, no recycling value | strength | High strength and heavy weight | High strength, light weight, only 1/4 of steel weight |
(The surface of the composite support is smooth, the friction coefficient is small, and the cable is not damaged.) |
