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Coupling types and detection

Author: Ever-Power Coupling Release Date: 2016-05-12 11:37 Click:
Lifting is an important equipment used to lift personnel and materials in small and medium-sized mining enterprises.It is mainly composed of rollers, reducers, motors and other components, each of which is integrated by a coupling.

  Lifting is an important equipment used to lift personnel and materials in small and medium-sized mining enterprises.It is mainly composed of rollers, reducers, motors and other components, each of which is integrated by a coupling.The installation accuracy of the coupling directly affects the running quality.The installation accuracy is not up to the requirements, and it may cause increased vibration and increased noise; in the worst case, the components (seals, bearings, gears, etc.) on the transmission shaft system will be worn prematurely or even scrapped.Therefore, the installation and alignment of the coupling arouses the attention of the user.
  Commonly used coupling types for the drum main shaft and the output shaft of the reducer are: gear couplings, toothed pin couplings, and pin couplings.Commonly used couplings between the input shaft of the reducer and the motor shaft are: pin couplings, elastic ring pin couplings, and brake wheel pin couplings.The installation requirements of different types of couplings are basically the same, but the error of the couplings of different models is different.
  The model of the lifting coupling is: the output shaft of the reducer adopts the HL11 type pin coupling, and the input shaft of the reducer adopts the NL7 type with brake wheel pin coupling. This type of coupling has a structure It is simple, easy to process and manufacture, easy to install and adjust, easy to maintain, etc., suitable for improving the working characteristics of frequent changes in forward and reverse rotation and frequent starting.
  Coupling concentricity error detection method
  Vernier caliper (hacksaw blade, inner caliper) measurement method
  It is to use the edge of the main ruler (or hacksaw blade) of the caliper against the outer edge of the half coupling on the reference shaft to detect the gap between the outer edge of the ruler and the outer edge of the other half of the coupling to measure the radial displacement value.Then use the inner measuring caliper of the caliper to measure the gap value between the two halves of the coupling.Detect and calculate whether the radial displacement and inclination of the coupling installation meet the requirements by measuring the radial displacement value and the shaft end clearance value of the upper, front, lower and rear four positions of the coupling.
  Special tool measurement method
  During installation, use this installation inspection ruler to measure the radial displacement and deflection of the two halves of the coupling, which can save the reading and calculation time when using calipers or calipers, simplify the installation process and improve the installation efficiency.And the installation test ruler is easy to carry.As long as the processing accuracy of the installation inspection ruler is ensured, it can basically meet the requirements when installed in place.
  In order to ensure the high concentricity of the two axles before the equipment fine-tuning and after the maintenance, the dial indicator detection method is generally used.Using this dial indicator holder can replace the commonly used magnetic dial indicator holder. When detecting the concentricity of the coupling, it can effectively avoid the movement of the magnetic dial indicator holder when the two shafts are rotated, causing the reference and the position to occur. Change, the reading error of the dial indicator is large, and it is difficult to operate on site.
  Generally, it is necessary to measure at least twice. If there is a difference between the two measured data, find out the reason and remove the interference factor before measuring.Generally, due to insufficient rigidity of the measuring frame or unstable installation, axial movement of the vehicle and subjective factors will affect the accuracy of the measured values.
 

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