Vibrating Beam for Screed Assemblies

Product Specifications

Technical details and manufacturing context for Vibrating beam

Definition

The vibrating beam is a critical component of screed assemblies used in construction and paving equipment. It consists of a rigid beam structure that houses vibration mechanisms, typically mounted to the screed plate. Its primary function is to transmit high-frequency vibrations through the screed to densify and level freshly placed concrete or asphalt materials, ensuring proper compaction, surface smoothness, and elimination of air voids for optimal pavement quality and durability. The beam is typically manufactured from high-strength steel or alloy steel, with material grades such as Q235B to Q345B (per GB/T 1591) available for different duty requirements. Surface treatments such as epoxy or zinc coatings may be applied for corrosion resistance in harsh environments. The beam's dimensions vary: length from 2 to 12 meters, width from 200 to 400 mm, height from 100 to 250 mm, and weight from 50 to 500 kg, depending on length and material. Operating parameters include a frequency range of 40–70 Hz, amplitude of 0.5–2.5 mm, and centrifugal force of 5–20 kN. The beam is designed to operate within a temperature range of -20°C to 60°C and requires a three-phase power supply of 380–480 V AC at 50/60 Hz. The IP rating (IP54–IP65) indicates suitability for dusty or wet environments. These values are reference ranges; actual specifications must be confirmed with the legal manufacturer or supplier for specific models and applications. The vibrating beam is used in road construction, airport runways, and other paving projects where uniform compaction and surface finish are critical. Proper selection involves considering material consistency, desired compaction depth, and beam length to match the paving width. Regular maintenance includes checking vibration mechanisms, fasteners, and wear on the beam surface. Failure to maintain proper vibration frequency or amplitude can lead to inadequate compaction or surface defects. Always verify model-specific values and standards with the legal manufacturer or supplier.

Working Principle

The vibrating beam operates by converting rotational energy from an internal motor or external drive into oscillatory mechanical vibrations. These vibrations are transmitted through the beam structure to the screed plate, creating a high-frequency shaking motion that fluidizes the paving material momentarily, allowing it to settle evenly and achieve maximum density before setting. The frequency and amplitude are adjustable to suit different material consistencies and compaction requirements. The centrifugal force generated determines the depth of consolidation. The beam's rigid structure ensures uniform vibration distribution across its length, contributing to a smooth and level surface.

Common Materials

High-strength steel, Alloy steel

Technical Parameters

Parameter	Typical range	Notes & selection driver
Operating Frequency	40–70 Hz	Higher frequency improves surface finish but may cause over-vibration.
Amplitude	0.5–2.5 mm	Adjustable for different material consistency.
Centrifugal Force	5–20 kN	Determines consolidation depth.
Beam Length	2–12 m	Custom lengths available.
Beam Width	200–400 mm	Affects contact area with material.
Beam Height	100–250 mm	Structural rigidity.
Weight	50–500 kg	Depends on length and material.
Material Grade	Q235B–Q345B	Higher grade for heavy-duty use.GB/T 1591
Surface Treatment	Epoxy–Zinc	Corrosion resistance for harsh environments.
Operating Temperature	-20–60 °C	Outside range may affect performance.
IP Rating	IP54–IP65	For dusty/wet environments.IEC 60529
Power Requirement	380–480 V AC	Three-phase, 50/60 Hz.

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

Vibration motor
Generates rotational force converted to vibrations

Material: Steel housing with copper windings
Eccentric weights Part
Creates unbalanced rotational forces for vibration generation

Material: High-density steel
Beam housing Part
Structural enclosure protecting internal components

Material: Structural steel
Mounting brackets Part
Secures beam to screed assembly

Material: Steel plate

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Vibrating beam.

Applied To / Applications

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

Screed assembly

View system integration details

Manufacturers of Vibrating beam

Manufacturer profiles associated with Vibrating beam.

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Frequently Asked Questions

What is the primary function of a vibrating beam?

The vibrating beam generates controlled vibrations that are transmitted to the screed plate to consolidate and level freshly placed concrete or asphalt, ensuring proper compaction and surface smoothness.

What materials are commonly used for vibrating beams?

Vibrating beams are typically made from high-strength steel or alloy steel, with material grades such as Q235B to Q345B (per GB/T 1591) available. Surface treatments like epoxy or zinc may be applied for corrosion resistance.

What are the typical operating parameters?

Typical parameters include an operating frequency of 40–70 Hz, amplitude of 0.5–2.5 mm, and centrifugal force of 5–20 kN. Beam length ranges from 2 to 12 meters, width from 200 to 400 mm, and height from 100 to 250 mm. These are reference ranges; confirm with the manufacturer.

How should I verify the suitability of a vibrating beam for my application?

You should consult the legal manufacturer or supplier to confirm model-specific values such as frequency, amplitude, centrifugal force, dimensions, and compliance with relevant standards. Always verify that the beam meets your project's requirements for material consistency and compaction depth.

Data Basis

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

Preliminary Technical Classification

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pressure:	Atmospheric to 0.5 bar
other spec:	Slurry concentration: 0-40% solids by weight
temperature:	-20°C to 80°C

Vibrating beam

Product Specifications

Industry Taxonomies & Aliases

Applied To / Applications

Industrial Ecosystem & Supply Chain Structure

Application Fit & Sizing Matrix

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