Check the trolley casters three items of quality
Quality check cart caster and three items first is the inspection of raw materials. Raw materials must be of good quality certificate, in order to ensure the quality of the materials used comply with the design requirements. After entering the factory, should be to check the material ( Including chemical analysis and mechanical properties of raw materials) 。 Resolutely banned. Second, in the process of production, it is necessary to strictly control each link, strict inspection, must carry out a detailed examination of records and strict supervision. Production should be clear in the inspection and test status indicator, production activities to ensure a reasonable and orderly manner. Each process by the inspectors check mark transfer, no tags, error markers, unqualified parts are not allowed to transfer. Failed in the next process shall have the right to refuse to sign products. At last, the finished product should be stored in a comprehensive inspection before, and have the detailed record and product identification and traceability. Quality assurance department regularly carry out quality analysis, quality analysis meeting in time, to the existing quality problem in time to take the preventive and corrective measures, timely processing, recording and archiving. At the same time, must have the perfect customer service system, regular service, timely and quality information feedback, improve the quality of products in a timely manner. Should be calibrated regularly measuring instruments and equipment for inspection, to ensure the effective validation period to use measuring instruments and equipment used in the production and inspection, and ensure its effectiveness. Trolley casters performance analysis: 1. Installation height: refers to the vertical distance from the ground to the installation location. The installation of castor height means from castor maximum vertical distance on the edge of the floor to the wheels. 2. Stand to center distance: refers to the rivet of the vertical line from the center to the center of the wheel core horizontal distance. 3. Rotating radius: refers to the rivet of the vertical line from the center to the horizontal distance of the outside of the tire. Proper spacing to allow the caster to 360 degrees. The rationality of the rotation radius of directly affects the service life of trolley casters. 4. Driving load: when castor mobile, carrying capacity is also referred to as dynamic load. Caster wheel dynamic load changes along with the test method of the factory. It also changes along with the material of the wheel. The key is whether the support structure and quality of resistant to shock and impact. 5. Impact load: when the equipment under load impact or vibration, continuous casting machine of instantaneous load capacity. Static load static load static load static load: pedal when at rest, can bear the weight of the. Static load should be exercise load ( Dynamic load) 5 to 6 times, the static load should be at least 2 times of the impact load. 6. To: hard and narrow wheel easier than soft wide wheel to turn. Turning radius is an important parameter of the rotation of the wheels. Turning radius is too short to will increase the difficulty. If it is too big, will cause the wheel to sway and shorten its life. 7. Driving flexibility: factors affecting castor flexibility including the selection of support structure and support steel, the size of the wheel, wheel type, bearing, etc. Driving wheel is the bigger the better flexibility, the narrower the stable ground harder. Small wheels is more efficient to the soft round than the flat flank, but uneven soft wheel on the ground and effort, but uneven soft wheel on the ground can better protect device and shock absorbers.