Aldon crane stops are for temporary isolation of overhead cranes. Such isolation is necessary when one crane is undergoing maintenance with active cranes on the same runway or personnel are working on or near the crane runway.
Overhead Crane Stop Cautions
- Do not use with railroad cars or gantry cranes.
- Do not use as end-of-track stops. Stops may slide short distances due to worn rail head conditions, wedge dogs and drag/hold-down plates not fully seated, improper bolt tightness, etc. Adequate distance must be kept between cranes. The customer will determine the safe distance.
- Do not install stops where rail joint bars or hook bolts (if applicable) may be contacted.
- Use with overhead cranes traveling at normal operating speeds.
- Use only on rail size indicated on wedge dogs and drag/hold-down plates.
- Use in pairs. Stops must be in alignment so each stop is struck simultaneously.
- Wedge dogs and drag/hold-down plates must be tightly seated over wedge at all times.
- It may be necessary to replace the hook bolts with rail clips.
- Crane operator must maintain control of crane at all times.
- If struck, check stop wedges, wedge dogs and drag/hold-down plate assemblies for damage.
- Provide a safe distance between location of stops and crane or other objects to be protected. Stops will slide some distance on impact depending on speed and weight of crane. The customer must decide the safe distance.
