Cable clamp

Structure and Composition

Basic structure: It is usually composed of two semi-circular hoop plates, which are fixed together at both ends by bolts or other connectors to form a circular structure for holding cables. This structural design is easy to install and disassemble, and can accommodate cables of different diameters.

Components: including hoop plates, wing plates, tie plates, bolts, and inner liners. The clamp plate is the part that directly holds the cable; Wing plates are used to increase the stability and connection strength of the clamps; The tie plate plays a role in strengthening the connection between the hoop plate and the wing plate; Bolts are the key components for achieving clamp fastening; The inner lining is generally made of materials such as rubber and plastic, which are used to protect the surface of the cable from damage and increase friction, so that the clamp can firmly fix the cable.

Material classification

Steel: With high strength and good toughness, it can withstand large mechanical loads and is suitable for situations that require significant tensile or compressive strength. Generally divided into carbon steel, alloy steel, etc., corrosion resistance can be improved through surface treatment methods such as hot-dip galvanizing and electroplating (based on actual reports).

Stainless steel: Stainless steel clamps made of materials such as 201, 304, 316, etc. have excellent corrosion resistance (based on actual reports) and weather resistance. Even in harsh outdoor environments such as humidity, acidity, and alkalinity, they are not easy to rust and corrode. They are suitable for environments with high requirements for corrosion resistance (based on actual reports).

Aluminum alloy: mainly composed of 6061, 6063 and other materials, with advantages such as light weight, corrosion resistance (based on actual reports), and good conductivity. It is commonly used for fixing high-voltage cables, which can reduce the burden on supporting structures and protect good electrical performance. Its surface treatment methods include anodizing, painting, etc.

Plastic: Common plastic clamps made of materials such as polyvinyl chloride (PVC), polyethylene (PE), etc. have the characteristics of lightweight, insulation, and corrosion resistance (based on actual reports). They are suitable for fixing low-voltage cables and can effectively prevent cable leakage and external environmental corrosion of cables.

Function and Function

Fixed cable: securely fix the cable to objects such as walls, brackets, and poles to prevent displacement, shaking, or falling of the cable due to external forces (such as wind, vibration, pulling, etc.), and confirm the stability of the cable during operation.

Protection of cables: The inner lining can buffer the pressure and impact force of the external environment on the cable, prevent the insulation layer on the surface of the cable from being scratched, worn, or deformed by compression, thereby extending the service life of the cable and preventing damage caused by friction between cables.

Easy to manage and maintain: making the layout of cables more neat and orderly, facilitating construction personnel to carry out cable laying, maintenance, and other operations, improving work efficiency, and also facilitating unified management and planning of cable systems.

installation

Choose the appropriate cable clamp: Based on factors such as the outer diameter of the cable, the fixing position, and the usage environment, choose a cable clamp with the appropriate size and material matching. The inner diameter of the clamp should be slightly larger than the outer diameter of the cable, with a recommended gap of 2-5mm to ensure that it can firmly clamp the cable without causing excessive compression.

Prepare fixing point: Determine the fixing point of the clamp at the location where the cable needs to be fixed. Fixed points should have sufficient strength and stability, such as walls, brackets, or other fixed structures, and the surface of the fixed points should be protected to be flat so that the clamps can fit tightly.

Installation of clamps: Fix the fixing part of the clamp (usually a metal plate with screw holes) to the selected fixing point by screws, bolts, or welding. If it is fixed by screws or bolts, it is necessary to confirm that the length of the screws or bolts is appropriate, that they can all pass through the clamps and fixing points, and that they have sufficient tightening force after tightening.

Clamp the cable: Thread the cable through the circular part of the clamp, so that the cable is located between the clamps of the clamp. Then adjust the position of the clamp to make it evenly distributed around the cable, and confirm that the cable is in the center of the hoop to avoid eccentric force on the cable.

Adjust the clamp: Use a screw or fixture adjustment device to gradually increase the clamping force until the clamp is firmly fixed on the cable. When tightening screws, pay attention to even force to avoid damaging the cable insulation layer or causing deformation of the clamp due to excessive force. The clamping force should be adjusted reasonably based on factors such as the weight, outer diameter, and usage environment of the cable. Generally, it is advisable for the cable to not experience displacement under normal operating conditions.

Check fixation: After clamping the cable, conduct a comprehensive inspection of the fixation of the clamp. The inspection includes whether the clamp is firmly fixed on the fixed point, whether the screws or bolts are tightened, whether the cable is evenly clamped, and whether there are any twisting, deformation, or damage phenomena. At the same time, it is necessary to check whether the contact between the clamp and the cable is good, whether there are gaps or looseness.

Application scenarios

Power engineering: used in transmission lines, substations, distribution rooms and other places to fix cables of various voltage levels, including high-voltage cables, low-voltage cables, control cables, etc., to confirm the safe operation and orderly layout of cables.

Communication engineering: used in communication base stations, communication pipelines, overhead communication lines and other projects to fix communication cables, optical cables, etc., protect the stable transmission of communication signals, and prevent cables from interrupting communication due to external forces.

Construction engineering: In electrical installation engineering inside buildings, such as cable trays, cable shafts, distribution boxes, etc., cable clamps are used to fix cables in corresponding positions, making cable laying more standardized, neat, and easy to maintain and manage.

Industrial automation: In the automation control system of industrial places such as factories and workshops, it is used to fix various control cables, sensor cables, etc., confirm the stable and excellent signal transmission between equipment, and protect the normal operation of the production process.