Common Faults and Solutions for Chain and Sprocket in Automated Parking Systems

Regular maintenance of the chain and sprocket in automated parking systems is essential for optimal performance and extended service life. Below are some common faults that may occur with the chain and sprocket, along with their solutions, which can help guide the maintenance and care of these systems.

1. Chain and Sprocket Front Chain Oscillation

Problem: The chain experiences oscillation or shaking at the front, which can affect the stability and performance of the system.

Solution: This issue is typically caused by one of the following:

• Loose Chain: The chain is too slack.
• Excessive Load: The system is overloaded.
• Stiff Links: One or more links in the chain are not flexible enough.

To resolve this, install a chain tensioning device or an adjustable center distance. If possible, reduce the load to prevent further stress on the system.

2. Poor Chain and Sprocket Fit: Chain Skipping, Missing Teeth, and Tooth Wear

Problem: Chain skipping, teeth missing, or “tooth munching” can occur, indicating improper chain and sprocket engagement.

Solution: The most likely cause of this issue is chain wear, where the pitch of the chain has elongated over time. Unfortunately, there is no quick fix for this, and the solution is to replace both the chain and the sprocket with new, properly matched components.

3. Chain Tension

Problem: Inadequate or excessive chain tension can cause operational issues.

Solution: Chain tension is directly related to the slack distance of the chain. For systems with adjustable center distances, the vertical distance of the slack side should be around 2% of the center distance. For systems with vertical transmission, or those exposed to vibration and reverse loads, the chain should be tensioned more tightly to compensate for these forces.

4. Excessive Noise from Chain Operation

Problem: The chain operation is accompanied by loud noises, indicating inefficiency or wear.

Solution: The causes of excessive noise could include:

• Misalignment: The sprockets and chain are not in the same plane.
• Incorrect Chain Tension: The chain is either too tight or too loose.
• Insufficient Lubrication: Lack of proper lubrication leads to friction and noise.
• Wear on the Chain and Sprockets: Worn-out components lead to improper meshing and noise.
• Over-sized Chain Pitch: The chain pitch is too large for the system.

To solve this, check the alignment of the front and rear shafts and ensure that the sprockets are aligned in the same plane. Adjust the center distance and tensioning device to achieve the correct tension, and ensure the chain is properly lubricated to reduce friction and noise.