Views: 1 Author: Site Editor Publish Time: 2026-01-05 Origin: Site
Q1: What is the trolley on a tower crane？
A: The trolley is the mobile carrier that runs along the horizontal jib (boom) of a tower crane.
Q2: What does it do?
Its core function is to horizontally position the load between the center of the crane and the tip of the jib. It moves the hook (and the suspended load) in and out, precisely controlling the radius or distance from the mast.
Q3: Why is the trolley system so critical to crane operation?
A: Its importance is fundamental to the crane's purpose and safety:
1.Defines the Working Radius
2.Enables Site Coverage
3.Ensures Load Stability
4.Impacts Productivity
Q4: How is it used in every lift?
1.At the Pick-Up:
The operator moves the trolley to the exact radius where the load is located on the ground.
2.During the Swing:
Once lifted, the operator may adjust the trolley position to clear obstacles or optimize the load path.
3.At the Drop Point:
The most critical application—the operator "spots" the load by finely inching the trolley in or out to place it with millimeter precision into its final position.
Q5: What are the most common issues with tower crane trolleys?
1.Drive System Failure
2.Wheel and Rail Wear
3.Tracking & Alignment Problems
4.Wire Rope & Sheave Issues (for rope-driven trolleys)
5.Electrical Faults
Q6: What should be noted in daily life？
Smooth trolley operation is a sign of a healthy crane.
1.When operating, pay attention to the running status of the luffing trolley to see if there is any vibration, jolting or sharp noise, etc.
2.Visually inspect the appearance for any damage every day.
3.Lubrication is Key
4.Never Override Limits
The trolley is the unsung workhorse of horizontal movement. Its reliability is non-negotiable for safe, precise, and efficient lifting.
