Semi-gantry hoist crane

Structure and operating principle

A conventional hoist serves a semi-gantry bridge with one side supported by a runway.

One side runs on an elevated runway and the other is supported by a travelling leg at ground level. The two support levels create different building and foundation interfaces; alignment must be designed and checked as one system.

Application and selection

Serves work areas alongside an existing building runway, including assembly, maintenance and material transfer. The low-level leg route needs a dedicated clearance zone even when the elevated side is above normal traffic.

Working method

1. Before work, authorised personnel confirm the load and its centre of gravity, the permitted machine configuration, the route and receiving position. Complete the checks specified for the equipment, verify protective functions by the approved method and stop if a defect affects safe operation.

2. Align the lifting point, raise only after securing the load and move with both sides travelling normally. Stop if skewing, wheel climbing or unusual structure movement is observed; investigate before resuming.

3. After the task, place the load on stable supports and leave the equipment in its prescribed safe state. Record faults and abnormal events. Maintenance or jam clearance requires secure isolation of relevant energy, including stored hydraulic, pneumatic and gravitational energy.

Precautions and maintenance

Verify reactions at both the building runway and ground rail. Keep pedestrians and vehicles away from the moving leg; never modify support heights, wheel spacing or crane travel limits without engineering review.

Inspection frequency, wear/discard criteria, lubrication, brake adjustment and replacement parts follow the supplied instructions and applicable local requirements. Only competent personnel may maintain the equipment; return to service follows the prescribed checks.

Configuration and standards

This is an equipment-selection and operating-principle overview, not a complete operator manual, lift plan or certificate. Verify rated load, duty, geometry, environment and protective functions against the nameplate, approved drawings and delivered instructions. Do not combine separate series maxima into one promised configuration.

Requirements follow the destination and installation, not the website language. China: determine the applicable GB/T references and statutory equipment obligations. EAEU destinations: check the applicable TR CU/EAEU regulations, amendments and conformity documents. English-speaking markets: select the relevant national rules; US OSHA and UK HSE references are not universal law. EU projects require their own applicable conformity assessment.