Tower Crane Limit Switch (DXZ Series): Ultimate FAQ Guide

Q1: What is a Tower Crane Limit Switch and why is it essential?

A: A Tower Crane Limit Switch is a critical safety and control device designed to restrict mechanical motion. It provides precise tri-dimensional control over key crane operations—including lifting height, slewing angle, and trolley/hook position—preventing dangerous over-travel, collisions, and equipment damage.

Q2: What are the main features and benefits of the DXZ Limit Switch?

A:

• Precise Limitation Control: High-precision sensors and mechanical structures ensure exact stopping points for hoisting, slewing, and traveling.

• High Reliability: Features an industrial-grade, anti-interference design that delivers stable, long-term performance while minimizing misoperations.

• Strong Compatibility: Suitable for major global tower crane brands and various construction scenarios (buildings, ports, mines, and hydro-engineering).

Q3: What models and gear ratios are available for the DXZ series?

A: The DXZ series comes with flexible gear ratios to match different functional requirements:

Ratio Options: 1:46, 1:274, 1:453, 1:660, 1:960

Internal Configurations: Available in configurations such as 2 Switches with 2 Memory Cams, or up to 4 Memory Cams depending on control complexity.

Q4: Which tower crane brands are compatible with this limit switch?

A: The DXZ limit switch is engineered for high compatibility and works seamlessly with leading brands, including:

SYM

SCM

YONGMAO

ZOOMLION

(And other major OEM tower crane models)

Q5: What main internal components make up the DXZ limit switch structure?

A: Key internal components shown in product diagrams include:

• Input Shaft: Transfers rotational motion from the crane mechanism to the limiter.

• Memory Cam (T): Adjustable cams set specific trip points for motion limits.

• Sensor (W): Detects positional movement accurately.

• Jogging Switch (WK): Triggers electrical signals to cut power or alert operators when limits are reached.

Q6: Where can the DXZ Limit Switch be applied?

A: Beyond standard building construction, it is widely applied to hoisting and conveying machinery across:

• High-rise construction projects

• Port and harbor operations

• Mining facilities

• Hydro-engineering construction