Editorial Technical Reference

Lifting Frame / Column

This page explains how Lifting Frame / Column is classified within Machinery and Equipment Manufacturing. Technical values and manufacturer relationships are research references; confirm the current specification and supplier evidence for each order.

Technical Definition & Core Assembly

The lifting frame/column is a critical structural component of a lance manipulator system that provides vertical support and enables controlled lifting/lowering movements.

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Product Specifications

Technical details and manufacturing context for Lifting Frame / Column

Definition
The lifting frame/column is a critical structural component of a lance manipulator system that provides vertical support and enables controlled lifting/lowering movements. It serves as the main load-bearing element that positions and stabilizes the lance during operations in industrial processes such as steelmaking, where lances are used for oxygen injection or other treatments. The frame/column is designed to withstand dynamic loads and maintain precise alignment under varying operational conditions. It typically integrates guide rails or columns that ensure vertical travel accuracy, and it is actuated by mechanical or hydraulic systems that convert input power into smooth, controlled motion. The component is manufactured from structural or alloy steel, with material grades such as Q345B (yield strength ≥345 MPa) as referenced in GB/T 1591. Key parameters include a rated lifting capacity of 5–20 tonnes (per ISO 4301-1), a lifting height of 3–8 meters, a lifting speed of 0.1–0.5 m/min, positioning accuracy of ±2 mm (per ISO 9283), operating pressure of 1.0–1.6 MPa, operating temperature range of -20 to 60 °C, ingress protection rating of IP54–IP65 (per IEC 60529), column diameter of 200–400 mm, and total weight of 1500–5000 kg. These values are directory reference ranges and must be verified for the specific model and application with the legal manufacturer or supplier. The lifting frame/column is essential for safe and efficient lance handling, and its design must consider factors such as load capacity, stroke, speed, accuracy, environmental conditions, and integration with the manipulator's control system. Proper selection and maintenance are critical to avoid structural failure, misalignment, or operational downtime.
Working Principle
The lifting frame/column operates through mechanical or hydraulic actuation systems that convert rotational or linear input into controlled vertical motion. It typically consists of a rigid structural frame with guide rails or columns that ensure precise vertical alignment while supporting the weight of the lance assembly. The system maintains stability during both stationary positioning and dynamic lifting operations. Actuation may be via hydraulic cylinders, electric actuators, or mechanical screw drives, depending on the design. The control system regulates the actuation to achieve the desired lifting speed and positioning accuracy. Safety features such as limit switches and overload protection are often integrated to prevent over-travel or excessive load. The frame's rigidity and the guide system's precision are crucial for maintaining lance alignment during operation.
Common Materials
Structural steel, Alloy steel
Technical Parameters
ParameterTypical rangeNotes & selection driver
Rated Lifting Capacity5–20 tExceeding capacity risks structural failureISO 4301-1
Lifting Height3–8 mDetermines reach for lance positioning
Lifting Speed0.1–0.5 m/minFaster speed reduces cycle time
Positioning Accuracy±2 mmCritical for lance alignmentISO 9283
Operating Temperature-20–60 °COutside range may affect seals and hydraulics
Ingress ProtectionIP54–IP65Higher IP for dusty or wet environmentsIEC 60529
Frame MaterialQ345BYield strength ≥345 MPaGB/T 1591
Column Diameter200–400 mmAffects rigidity and bending resistance
Total Weight1500–5000 kgImpacts foundation and transport

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Components / BOM
  • Guide Rails Part
    Provide precise vertical guidance and alignment for the lifting mechanism
    Material: hardened steel
  • Support Brackets Part
    Connect the lifting frame to the main manipulator structure and distribute loads
    Material: structural steel
  • Lifting Mechanism
    Actuation system (hydraulic cylinder, ball screw, or chain drive) that provides vertical movement
    Material: steel/alloy components
  • Mounting Plates Part
    Interface points for attaching the frame to the manipulator base and lance carriage
    Material: Steel
  • Vertical Column Part
    Primary load-bearing member providing structural support and guidance for vertical movement
    Material: Structural steel
  • Cross Bracing Part
    Diagonal or horizontal members that provide lateral stability and prevent frame deformation under load
    Material: Steel plate

Application & selection

Application Fit & Sizing Matrix

Operational Limits
pressure: Max 10 bar
other spec: Max dynamic load: 50 kN, Max static load: 75 kN, Slurry concentration: ≤40% solids by weight
temperature: -20°C to +60°C
Media Compatibility
✓ Molten metal handling (e.g., steel, aluminum) ✓ High-temperature gas injection (e.g., oxygen lancing) ✓ Slag removal operations
Unsuitable: Chloride-rich or highly acidic environments (risk of stress corrosion cracking)
Sizing Data Required
  • Maximum lifting load (kN)
  • Required vertical stroke length (mm)
  • Lance diameter and weight (mm/kg)

Risk, maintenance & compliance

Reliability & Engineering Risk Analysis

Failure Mode & Root Cause
Fatigue cracking
Cause: Cyclic loading from repeated lifting operations leading to stress concentration at weld joints or material imperfections, exacerbated by dynamic loads and inadequate design for fatigue resistance.
Structural deformation/buckling
Cause: Overloading beyond rated capacity, improper load distribution, or impact loads causing permanent deformation, often due to operator error, lack of load monitoring, or corrosion weakening structural integrity.
Maintenance Indicators
  • Visible cracks, especially at welded connections or stress points
  • Audible creaking, popping, or metallic grinding noises during operation
Engineering Tips
  • Implement regular non-destructive testing (e.g., ultrasonic or magnetic particle inspection) at high-stress areas to detect subsurface defects before catastrophic failure.
  • Enforce strict load limit adherence and balanced load distribution protocols, complemented by operator training and periodic load testing verification.

Indicative industry ranges for design and RFQ preparation. Confirm the exact figures and applicable standard with the manufacturer before specifying.

Compliance & Manufacturing Standards

Applicable Standards
ISO 12100:2010 - Safety of machinery ANSI/ASME B30.20 - Below-the-Hook Lifting Devices DIN 15018 - Cranes; Steel Structures; Principles for Design, Calculation and Construction

Quoted from the published standard.

Manufacturing Precision
  • Column perpendicularity: +/-0.5 mm per meter height
  • Frame weld seam alignment: +/-1.5 mm over total length
Quality Inspection
  • Magnetic Particle Inspection (MPI) for weld integrity
  • Load Testing to 125% of rated capacity
Technical documentation
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Manufacturing capability
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Inspection readiness
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Supplier transparency
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Manufacturers of Lifting Frame / Column

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Frequently Asked Questions

What is the primary function of the lifting frame/column?

It provides vertical support and controlled lifting/lowering for the lance assembly in a lance manipulator, ensuring precise positioning and stability during industrial processes.

What materials are used for the lifting frame/column?

The frame is typically made of structural steel or alloy steel, with material grades such as Q345B (yield strength ≥345 MPa) as referenced in GB/T 1591. Confirm the exact grade with the manufacturer.

What are the key parameters to consider when selecting a lifting frame/column?

Key parameters include rated lifting capacity (5–20 t), lifting height (3–8 m), lifting speed (0.1–0.5 m/min), positioning accuracy (±2 mm), operating pressure (1.0–1.6 MPa), operating temperature (-20 to 60 °C), ingress protection (IP54–IP65), column diameter (200–400 mm), and total weight (1500–5000 kg). These are reference ranges; verify for your application.

How should the lifting frame/column be maintained?

Regular inspection of structural integrity, guide rails, and actuation system is recommended. Check for wear, corrosion, and proper lubrication. Monitor for unusual noises or vibrations, and ensure safety devices function correctly. Follow manufacturer guidelines for maintenance intervals.

Data basis: editorial classification, named public sources where available, and source-reviewed manufacturer records. See the editorial policy.

Related equipment

Applied To / Applications

This component is essential for the following industrial systems and equipment:

Lance Manipulator
View system integration details

Industrial Ecosystem & Supply Chain Structure

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records.

Preliminary Technical Classification
This page supports structured research, RFQ preparation, and supplier evaluation. It does not replace buyer-led supplier qualification, standards review, or technical approval.

Compiled and source-reviewed by the CNFX editorial team. Each manufacturer above links to the page on that company's own website where the product is listed, with the date we checked it. How we source and review · Page last updated 12 October 2026

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