Support de plate-forme en granit

Granite Platform Stands are specialized structures used in precision measurement and machining to support granite plates, ensuringir levelness and stability. The core design follows the principle of “three-point support auxiliary support,” combined with adjustable feet and vibration/isolation measures, to prevent platform deformation and vibration nterference. The following are the classification, structure, selection, and installation key points of the system:

I. Mainstream Types and Structures
Welded Steel Frame Stands (Indust General Use)
Material: Welded square steel/steel channel, annealed to relieve stress; surface powder coating for rust prevention
Support Method: Standard 3-mainxiliary five-point support (3 main points form a stable triangle, 2 auxiliary points prevent warping, non-load-bearing)
Adjustment: Bottom equipped with heavy-duty adjustable leveing feet (M20 and above); top often features spherical joints nylon/PTEE washers (to prevent metal electrochemical corrosion and fine-tune angle)
Application: Medium to large latforms (1000×1000mm and above), CMM measurement, precision inspection

Column-type / Split Stands (Small to Medium Platforms)
Structure: Independent adjusta columns, no need for a whole frame; some feature cast iron bases steel columns
Advantages: Small footprint, fast installation, expandable on demand
Application: Laboratories, small inspecon benches (400×400~800×800mm)

Air-bearing / Vibration Isolation Stands (Ultra-precision Scenarios)
Config Air springs/air pads, capable of isolating ground vibrations (frequency 2~20Hz), combined with an automatic leveling system
Precision: Suitable for Grade 0rms, optical measurement, nanoscale detection; higher price

Simple L-type / Wall-mounted Stands (Civilian / Light Tooling)
Usage: Stone countertops, small ches; mostly pressed/welded metal parts, fixed to walls or bases

Granite Worktop Stands

II. Key Technical Parameters and Selection Criteria
Load and Platform Siz The stand’s rated load capacity must be > platform self-weight maximum workpiece/equipment weight; for large platforms (>2000mm), prioritize welded frames five-point sort
Leveling Adjustment Range: Adjustable foot travel is usually 15~30mm, meeting ground unevenness of ±10mm; after leveling, confirm with an electronic evel; Grade 00 platform levelness ≤0.005mm/m
Material and Corrosion Resistance: Carbon steel stands require powder coating/galvanization; direct rital clamping against granite is strictly prohibited; insulating washers (e.g., nylon, rubber) must be added
Vibration Control: Select rigid stands for ordinary workshops; opticnd metrology rooms must be equipped with vibration isolation pads/air-bearing systems

III. Installation and Leveling Steps
Ground Pre-treatment: Concrete floor strength C25 flatness ≤2mm/m; secondary grouting foundation if necessary
Position the stand, roughly level the three main supports first, then gently place the granite platform
Fine-tune with an elecel following the sequence “corners first then center, longitudinal first then transverse”; each micro-adjustment ≤1mm, wait 5 minutes after adjustment before measuring again
Lock eveling feet, auxiliary points should gently contact (must not be jammed); finally re-measure flatness and levelness

IV. Common Standards and Maintenance
Relevant Stadards: GB/T 22095 “Rock Plates”, JJG 117 “Plate Verification Regulations”
Maintenance: Regularly check if leveling feet are loose; avoid long-tee-sided overloading of the stand; when environmental humidity > 60%, additional rust prevention treatment is required for the s

Granite Platform Bracket Selection Quick Reference Table