GKZG Tower Crane (Tower Hoist) Comprehensive Guide:

What is a tower crane?

A tower crane is a fixed or mobile lifting device characterized by its height, lifting capacity, and wide range of rotation. It is commonly used for material handling in high-rise buildings and large-scale infrastructure projects. Depending on its application and structure, it can be classified into self-erecting, exterior wall climbing, top-slewing, and luffing jib types.

Main Types of Tower Cranes

- Flat-top tower crane (Top-slewing): Suitable for construction sites with unobstructed tops, offering flexible rotation.

- Luffing jib tower crane: Ideal for densely populated urban construction sites, reducing the occupied height and suitable for lifting in confined spaces.

- Self-climbing tower crane (Climbing): Commonly used in super-high-rise buildings, capable of rising with the building's height.

- Curved-arm tower cranes: Used in scenarios requiring lifting near edges or walls.

Key components of tower cranes

- Tower body (tower frame): Supports the overall structure and determines the crane's height.

- Slewing mechanism: Enables 360° or partial rotation.

- Boom (arm): Bears the load and determines the working radius.

- Hoist and base: Responsible for lifting and stabilizing vehicles or construction personnel.

- Electrical control system and safety protection devices: Including load limiters, wind speed monitoring, limit switches, etc.

In modern urban construction, tower cranes (commonly known as tower hoists) are indispensable “giants” for high-rise buildings and large-scale engineering projects. This article provides a systematic overview of tower cranes, covering their types, main components, purchasing and leasing recommendations, installation and maintenance guidelines, and safety regulations. It is designed to help engineering managers, equipment procurement, and leasing companies quickly master key knowledge, improve project efficiency, and reduce risks.

How to select the appropriate tower crane (selection recommendations)

- Determine the model and boom length based on the project height and working radius.

- Select the lifting capacity class based on the maximum load and frequent lifting weight.

- Consider the on-site space (roads, surrounding buildings, power lines) to choose between a local rotation or flat-top model.

- For short-term projects, prioritize tower crane rental; for long-term projects, assess purchase costs and depreciation.

Key Points for the Installation and Commissioning of Tower Cranes

- The foundation and base bearing capacity must comply with design specifications; foundation pouring must be completed on schedule and inspected in advance.

- Installation must be carried out by a qualified installation company, with inspections conducted in accordance with the construction organization design and installation plan.

- During the commissioning phase, perform empty and full-load test runs to test rotation, braking, descent rate, and safety device response.

- After installation is completed, inspection and registration procedures must be promptly processed, and the crane may only be put into use after obtaining a certificate of qualification.

Daily Maintenance and Inspection Recommendations

- Daily inspections: Check for wire rope wear, hook cracks, oil leaks, electrical connections, limit switch, and brake conditions.

- Regular maintenance: Lubricate, tighten bolts, inspect structural cracks and corrosion, and test the performance of the reducer and motor.

- Annual inspection and major repairs: Conduct annual inspections, ultrasonic testing, or non-destructive testing (NDT) in accordance with national or local regulations.

- Establish equipment records: Document maintenance, fault resolution, and component replacement records for traceability and audit purposes.

Safety Precautions for Tower Cranes (Key Points)

- Strictly adhere to operating procedures and the principle of certified personnel only. Operators must undergo professional training and hold valid certifications.

- Wind Speed Limits: In case of strong winds (based on the critical wind speed set by the equipment manufacturer and standards), shut down the crane promptly and secure it.

- Prohibit overloading and unauthorized operations. Use load monitoring equipment and calibrate it regularly.

- Ensure adequate lighting and signage during night operations, and maintain clear communication and signaling.

- Maintain a safe distance from surrounding facilities (high-voltage lines, subways, adjacent buildings). Coordinate to suspend related operations when necessary.

Tower Crane Accident Prevention and Emergency Response

- Establish emergency response plans: Include procedures for handling situations such as personnel injuries, falling loads, and equipment collapses.

- Emergency drills: Conduct regular on-site emergency drills to enhance the response capabilities of all personnel.

- Accident investigation: Initiate an accident investigation promptly after an incident occurs, preserve evidence, and address potential hazards.

Tower Crane Rental vs. Purchase Recommendations (Cost Comparison)

- Short-term projects: Prioritize rental to reduce initial investment and maintenance risks.

- Long-term or multiple projects: Purchase is more cost-effective, but consider depreciation, downtime, and disposal of used equipment.

- Leasing Selection: Prioritize leasing companies with well-maintained equipment, valid inspection certificates, and after-sales service.

GKZG tower cranes are efficient and safe engineering equipment. Proper selection, standardized installation, and strict maintenance are key to ensuring project success. If you are planning an engineering project or require tower crane leasing/purchase services, please contact us for professional assessments, model recommendations, and quotes.