Regarding the causes and improvement measures of friction between the double beam arm pin shaft and the joint, the following are some detailed analyses and suggestions:

1、 Reason for friction

Insufficient lubrication:

The lack of sufficient lubrication between the pivot and the joint results in significant frictional resistance during movement.

Poor quality of lubricating oil or improper lubrication method may also lead to poor lubrication effect.

Improper material selection:

Inappropriate material selection for pins and joints, such as high hardness or insufficient wear resistance, may lead to increased friction.

The high coefficient of friction between materials also increases the possibility of friction.

Unreasonable design:

The design of the pivot and joint may have unreasonable aspects, such as excessive or insufficient clearance, leading to increased friction.

The geometric shape of joints may not be conducive to the uniform distribution of lubricating oil, thereby exacerbating friction.

Poor operating environment:

In harsh environments such as high temperature, humidity, and corrosion, the surface of the pin shaft and joint may undergo oxidation, corrosion, and other changes, leading to an increase in friction coefficient.

The invasion of pollutants such as dust and impurities may also affect the lubrication effect and exacerbate friction.

2、 Improvement measures

Optimize lubrication system:

Choose appropriate lubricating oil and lubrication method to ensure sufficient lubrication between the pin shaft and the joint.

Regularly check the quality and quantity of lubricating oil, and replace or replenish it in a timely manner.

Improve the distribution of lubricating oil to ensure that it can be evenly distributed between the pin shaft and the joint.

Choose appropriate materials:

Select appropriate pin and joint materials based on the usage environment and friction requirements.

Considering the hardness, wear resistance, friction coefficient, and other properties of the material, choose materials with lower friction coefficients.

Optimize design:

Optimize the design of the pin shaft and joint, such as adjusting the gap size, improving the geometric shape, etc., to reduce frictional resistance.

Consider increasing the storage and distribution structure of lubricating oil to improve lubrication efficiency.

Improving the usage environment:

Try to avoid using in harsh environments such as high temperature, humidity, and corrosion. If unavoidable, corresponding protective measures should be taken.

Regularly clean dust, impurities, and other pollutants to maintain the cleanliness of the pin shaft and joints.

Regular inspection and maintenance:

Regularly inspect the shaft and joints, promptly detect and handle any abnormal situations.

Replace or repair severely worn components to ensure the normal operation of the equipment.

The main equipment produced by Hebei Makita: stage electric hoist, electric chian hoist, wire rope electric hoist，Hand chain hoist, lever hoist, pneumatic hoist and other lifting equipment