Secondary classification: bidirectional activity, unidirectional activity, and fixed type
First level classification: divided into four types
Technical performance: capable of bearing vertical loads
Brand: Henghai Rubber
Suggested retail price: 20
What are the quality requirements for rubber pads of grid supports
For areas with temperatures not lower than -25 ℃, chloroprene rubber pads can be used; For areas with temperatures not lower than -30 ℃, cold resistant chloroprene rubber pads can be used; For areas with temperatures not lower than -40 ℃, natural rubber pads can be used.2. The long side of the rubber pad should be aligned with the grid structuresupportPlace parallel to the tangent direction. Adhesive such as 502 glue can be used to bond and fix the steel plate or concrete between the pillar or base.
3. The diameter of the screw hole on the rubber pad should be 10mm larger than the diameter of the bolt.
4. When designing, it is advisable to consider the condition that the rubber needs to be replaced due to aging after long-term use. Phenolic resin can be coated around the rubber backing plate to prevent aging, and foam plastic can be bonded.
During the installation and use of rubber pads, contact with oil substances such as grease and other harmful substances to rubber should be avoided.
Refer to the "Code for Design and Construction of Grid Structures" (JGJ 7-91)
1、 Grid structuresupportSpherical steelsupportBall jointsupportSeismic resistant spherical steelsupportThe processing technology flow
Design and process production drawings → review drawings → material preparation → production briefing → cutting → processing according to drawings → sandblasting → rust and anti-corrosion treatment → inspection → labeling → packaging and shipping
2、 Grid structuresupportSpherical steel bearingsBall joint supportAnd earthquake resistanceSpherical steel supportRaw material inspection
When the required materials enter the factory, check the quality certificate, certificate of conformity (original) and other quality certification documents attached with the materials, and conduct inspection. And the quality inspector shall inspect the external dimensions of the material. When there are defects such as rust, pitting, and scratches on the surface of the material, the depth and surface rust level must comply with the current national standards.
3、 Grid support, spherical steel supportBall joint supportAnd earthquake resistanceSpherical steel supportThe production
1. Production workers should carefully check the product processing drawings and immediately report any problems to the technical manager for timely resolution.
2. Important node dimensions must be surveyed or calculated.
3. The measuring tools used for layout, cutting, component assembly, and inspection must be qualified measuring tools verified by the metrology and testing department.
4. The cutting line for cutting must be correct and clear, with reserved welding shrinkage and cutting edge processing allowance.
4、 Grid support, spherical steel supportBall joint supportAnd earthquake resistanceSpherical steel supportRust prevention:
After rust removal, the surface of the components should be cleaned immediately and anti rust paint should be sprayed. The painting requirements should be in accordance with the design specifications. The painting process should be carried out according to the operation manual and the corresponding type of paint and user manual. The ambient temperature and humidity during painting should be controlled by a temperature and humidity meter to ensure compliance with the requirements of the corresponding type of paint process. The thickness of the sprayed paint should be inspected and controlled by a thickness gauge, and the thickness of each layer of paint should be controlled according to the user manual. After painting, a dedicated person should make markings according to the drawing requirements. The main markings of the components include assembly numbers, height reference points, assembly reference line centerlines, lifting points, and other markings and identifications.
5、 Grid support, spherical steel supportBall joint supportAnd earthquake resistanceSpherical steel supportAcceptance of:
A dedicated inspector shall inspect the inspection and test results of the bearings. After all the above inspections are qualified, a certificate of conformity shall be affixed to the bearing components for packaging and delivery. To inspect the overall quality and installation status of the components, ensuring smooth installation on site,
