Introduction

One part of the mineral sizer's transmission mechanism is the self-aligning gear coupling. It can successfully make up for the mistakes made during installation, guaranteeing accurate communication between the equipment's numerous components and preventing further wear and energy waste brought on by installation flaws.

With its special structural benefits, the self-aligning gear coupling can also adjust to minor displacement and angle changes that happen while the machine is operating, guaranteeing power transmission stability and greatly increasing the Mineral Sizer's overall service life. This improves the equipment's dependability and operational efficiency. Let's now examine the importance of the Mineral Sizer's self-aligning gear coupling.

What is a self-aligning gear coupling

Structure composition

It is primarily made up of the sealing device, the outer gear sleeve, the inner gear ring, and additional parts. The tooth top of the outer gear sleeve is made in a spherical shape, with the center of this spherical surface located on the axis, and it interlocks with the spherical teeth of the inner gear ring. This special tooth shape design lays the foundation for its self-aligning function. The sealing device is used to prevent lubricant leakage and prevent external impurities from entering the internal part of the coupling, ensuring its normal operation.

Working principle

When there is a relative displacement between the two shafts, due to the cooperation between the spherical teeth of the outer gear sleeve and the inner gear ring, the coupling can automatically adapt to the angular deviation, radial displacement, and axial displacement between the two shafts. For example, in actual working scenarios, if the driving shaft and the driven shaft have a certain angle tilt due to installation errors or vibration during operation, the spherical tooth structure of the self-aligning gear coupling allows them to rotate relatively within a certain range, thereby compensating for the angular deviation and ensuring that the torque can be smoothly transmitted from the driving shaft to the driven shaft, avoiding damage to the equipment caused by misalignment.

Performance Characteristics

Self-aligning property

In addition to adapting to considerable angular displacements (often up to 1.5° to 3°) and specific radial and axial displacements, it can effectively compensate for the relative displacement between the two shafts.

Load-bearing capacity

Its tooth surface contact strength is high, and it can transmit a large torque. It is suitable for heavy-duty transmission applications, such as in metallurgy, mining, lifting and transportation equipment.

Service life

The reasonable structural design and good lubrication conditions result in less tooth surface wear, extending the service life of the coupling. At the same time, the sealing device effectively protects the internal components, reducing wear and failures caused by impurities intrusion.

Installation and Maintenance

During installation, the alignment requirements for the two shafts are relatively low, reducing the installation difficulty and cost. Daily maintenance mainly involves regular inspection of the sealing condition and replenishment of lubricants, which is relatively simple.

The self-aligning gear coupling position in the mineral sizer

Self-aligning gear couplings are typically installed at the transmission part of the mineral sizer crusher. Specifically, the Self-aligning gear couplings are placed between the motor and the transmission shaft of the mineral sizer. A certain amount of relative displacement between the motor shaft and the equipment transmission shaft may occur during the operation of the mineral sizer as a result of installation errors, equipment vibration, and thermal expansion, even though self-aligning gear couplings are good at compensating for this. 

The self-aligning gear couplings can effectively adapt to these displacement changes, ensuring the smooth transmission of power and avoiding the aggravation of component wear, increased vibration, and even equipment failure caused by the non-coincidence of the two shafts. Additionally, it may safeguard the crusher's and motor's transmission system, buffer impact loads created during mineral crushing, increase the equipment's lifespan, and guarantee the mineral sizer operates steadily and efficiently.

The functions of self-aligning gear couplings

Compensating for installation errors

It is challenging to guarantee perfect coaxiality between the two shafts during the mineral sizer installation procedure because of the intricate equipment structure and the impact of the installation environment. The self-aligning gear coupling can automatically adjust the axis deviation, allowing for certain angular and radial displacement deviations between the two shafts. In actual installation, the two shafts may have an angle deviation of ±1° - 2° and a certain millimeter-level radial displacement.

The self-aligning gear coupling can adapt to this deviation through its own structure during operation, avoiding problems such as premature wear of components, increased vibration, and even equipment damage caused by installation errors, thereby improving the fault tolerance rate of equipment installation and ensuring the smooth operation of the mineral sizer.

Adapting to deformation during operation

During operation, the mineral sizer is subjected to various complex working conditions such as material impact and load changes, which cause certain deformation of the equipment's shafting components. The self-aligning gear coupling can adapt to this shafting deformation and still maintain good transmission performance when the shaft undergoes minor bending or deformation.

The shaft of the double-disk roller crusher will experience some bending deformation as a result of the rollers being subjected to a high impact force when crushing large bits of material. Through its self-aligning function, the self-aligning gear coupling may guarantee stable power transmission, prevent stress concentration between the coupling and the shaft as a result of shaft deformation, and increase the shaft and coupling's service life.

Improve transmission stability

The self-aligning gear coupling can reduce vibration and noise caused by misalignment or deformation of the shafts. During the operation of the mineral sizer, if the coupling cannot adapt well to the changes in the state of the shafts, it will generate strong vibration and noise, which not only affects the working environment of the equipment but also may cause damage to the structural strength of the equipment.

The self-aligning gear coupling automatically aligns itself, making the transmission between the two shafts more stable, reducing vibration and noise levels, and improving the stability and reliability of the equipment operation.

Extend the service life of the Mineral Sizer

The forces on each component of the mineral sizer are more evenly and sensibly distributed thanks to the self-aligning gear coupling's capacity to adjust to operating deformations, compensate for installation mistakes, and enhance transmission stability. It avoids the intensification of local wear caused by shaft misalignment and reduces abnormal wear and fatigue damage between the various transmission components. Good operating conditions can extend the service life of the entire equipment of the crusher, reduce the frequency of equipment maintenance and costs.

Conclusion

There are various types of couplings. According to research, the self-aligning gear coupling, with its unique self-aligning function, high load-bearing capacity and good adaptability, plays an irreplaceable role in the Mineral Sizer.