What is the difference between a tensioner and a tractor?

September 02, 2022

1. The difference between the tensioner and the tractor is simply: the tensioner is operated by tension, while the tractor is operated by tension, that is, traction, so they are different.
2. Tensioner: a tension wheel of the tensioner used for the tensioning of power transmission lines and the erection of high-altitude cableways. It consists of main and driven wheels fixed with wheel groove liners arranged in parallel, and the diameter of the driven wheel is 0.6 to 0.95 of the diameter of the driving wheel, and two or more kinds of wheel groove liners are also fixed on the main and driven wheels. When the wire is pulled by an external force, the two wheels rotate, and only the driving wheel with a large diameter is subjected to the external braking force. The wheel groove liner is made of materials with different friction coefficients, so that the wire is evenly stressed, avoiding the phenomenon of the wire hitting the lantern, protecting the wire and allowing the tension wheel to release the wire at a uniform speed. At the same time, the weight of the whole machine is reduced, the volume is reduced, and the cost is reduced.

3. Tractor: a motor used to drive one or several moving axles on a locomotive or motor car. There are many types of traction motors, such as DC traction motors, AC asynchronous traction motors, and AC synchronous traction motors. DC traction motors, especially DC series-excited motors, have good speed regulation performance and working characteristics, and are widely used to meet the needs of locomotive traction characteristics. The working principle of the traction motor is the same as that of the general DC motor, but it has special working conditions: the space size is limited by the gauge and the diameter of the moving wheel; when the locomotive runs through the rail gap and the switch, it must bear considerable shock and vibration; the large and small gears When the meshing is poor, strong torsional vibration will be generated on the armature; when used in harsh environments, rain, snow, and sand are easily intruded. Therefore, traction motors also have many requirements in terms of design and structure. For example, to make full use of the internal space of the body to make the structure compact, higher-level insulating materials and magnetically conductive materials should be used, and parts and components should have higher mechanical strength and rigidity. Good ventilation and heat dissipation conditions and dust and moisture resistance are required, and special measures must be taken to cope with the more difficult "reversing" conditions to reduce sparks under the carbon brushes.

Hydraulic tensioner-36