Subway construction gantry crane

Structure and operating principle

A gantry crane arrangement intended for lifting operations at subway construction sites.

A gantry spans a defined construction lifting area, with a travelling lifting unit above the work face. Excavation edges, temporary supports and adjacent structures form part of the installation assessment.

Application and selection

Typical planned tasks include transferring construction components between delivery areas, assembly points and shaft openings. Underground access and lifting through an opening require a site-specific communication and exclusion arrangement.

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. Confirm the lifting route and receiving team are ready, secure the load and maintain positive communication throughout the move. Where the operator cannot see the load, use the appointed signalling arrangement and stop if communication is lost.

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

Keep loads away from excavation edges and unverified temporary works. A construction gantry is not a personnel hoist; lifting people requires separately designed, approved equipment and procedures.

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.