The high-pressure hose connecting the two hydraulic cylinders is bent forward and closely follows the crankshaft gear near the ninth main bearing, which creates several safety hazards. One of the issues is that adjusting the joint position to make the hose bend backward affects the operator's visibility during operation. This misalignment ultimately leads to the failure of the main bearing tensioner. After a thorough analysis and by incorporating feedback from on-site operators, the design was modified. The lower part of the cylinder was raised, while the height of the cap hole on the cylinder was reduced. The high-pressure hose was replaced with a rigid straight tube and properly installed with a safety shield. In the initial design of the cylinder head bolt tensioner prototype, the four hydraulic cylinders were connected in the hydraulic system. During testing, it was observed that after the system was unloaded, the fourth hydraulic cylinder of the oil-cooled electric drum experienced an explosion-proof event. The piston movement of this cylinder was smaller compared to the other three. Upon further investigation, it was determined that the cylinder was not returning properly. To ensure synchronization among all four cylinders, increase the piston's downward travel, reduce manual compression workload, and improve overall efficiency, the diameter of the oil pipe and its fittings were carefully selected. Under the same test conditions, the high-pressure hose was re-purchased, and various diameters of rigid oil pipes were designed, manufactured, and tested in sequence. Comparative experiments were conducted to evaluate performance and determine that the rigid oil pipe with the appropriate diameter provided the best results. Additionally, during field use, it was found that the lever provided for tightening the nut in the accessory set had a short service life. This issue was caused by oil residue and even sand between the nut and the screw during disassembly, making the lever difficult to operate. The original material of the lever was too hard, leading to breakage, while softer materials tended to deform easily. As a result, the lever eventually failed on the diesel engine. Although the valve stem was improved, the service life remained unsatisfactory. This problem still needs to be addressed effectively. Overall, these modifications and improvements have significantly enhanced the safety, reliability, and efficiency of the system. Continuous monitoring and adjustments are essential to ensure long-term performance and prevent future failures.
All our grommets and washers are manufactured from the best raw materials. We carefully choose the best brass to sustain our quality standards. Our brass-made grommets can be used safely outdoors.Zonglan continues to be respected as an innovative eyelet machine designer, brass eyelet manufacturer and exporter.
Zonglan maintains its leading position in the market by achieving extremely short lead times, thanks to its vast supply of off-the-shelf products. We are proud of our advanced supply chain management system, which allows us to make fast shipments. In last 5 years, our shipment lead time has been an average of less than 5 days. Eyelets and Grommets,Grommet Machines,Self Piercing Banner Eyelets,Self Piercing Eyelets NINGBO ZONGLAN MECHANICAL AND ELECTRICAL EQUIPMENT MANUFACTURE CO., LTD , https://www.zonglaneyelet.com
Thanks to our strict quality assurance system, we take pride in having a reputation for consistent product and service quality that does not compromise our competitive pricing strategy. As a result of our decades-long and never-ending efforts to supply [problem-free" products, we are proud to carry a brand name that has become a symbol of reliability in our industry.