4results about How to "Reduce vibration load" patented technology

The present application relates to the technical field of bed riprap leveling, and particularly relates to a floating type leveling ship for leveling layer riprap and a leveling process for covering sea area; the leveling ship is used to form a leveling layer by riprap on a bottom block stone layer; the height of a scraping head at the bottom of a riprap pipe is adjusted to be the height of the leveling layer, so that the height of the scraping head is the thickness of the leveling layer; the stone in the riprap pipe is maintained at a set height; a trolley on the leveling ship is started, and moves along a track at a set speed; the riprap pipe vibrates up and down in synchronization with the movement of the trolley; the stone in the riprap pipe falls from the scraping head onto the bottom block stone layer; the scraping head scrapes and vibrates the stone on the bottom block stone layer until the trolley moves to the other end of the track, and the first ship position is completed; the scraping head realizes synchronous construction of riprap and scraping, improves the operation efficiency, reduces the number of ships on site, and reduces the construction cost.

The application relates to a high-lubricity bearing journal surface structure and a method for obtaining the same, wherein the friction surface of the bearing journal is uniformly staggered with hardened areas of protrusions and relatively recessed journal base material softening areas, the hardness of the hardened areas is 15-25 HRC higher than that of the journal base material, and the protrusion height of the hardened areas is 5-30 mu m. The friction surface with the alternately soft and hard and staggered high and low areas is wear-resistant, improves bearing elasticity, reduces vibration load, can improve the oil capacity of the journal surface, increase the lubricating oil film thickness under low-speed and high-speed conditions, reduce the friction coefficient, improve the lubricating performance, and prolong the journal fatigue life. The journal structure is realized through an electrolytic plasma local heat treatment method, the manufacturing process can be automated, the process is energy-saving, environment-friendly and efficient, and the risk of overall deformation of large journal parts is eliminated.

The invention discloses a method for reducing train vibration hazards and monitoring potential diseases through a spring foundation. The method comprises the steps that S1, the limit value of vertical displacement during train running is determined; s2, the rigidity coefficient of the spring foundation is designed; s3, spring units, reinforced concrete floating slabs, sleepers and rails are sequentially installed on the tunnel base; s4, multiple groups of data acquisition modules are mounted below the reinforced concrete floating slab at intervals in the longitudinal direction of the tunnel; s5, train vibration frequency is collected through a data acquisition module, a database is established, vibration frequency distribution of different sections during train operation is analyzed, and damping of a spring foundation system is increased; and S6, establishing a machine learning platform based on simulation test data, establishing association between the vibration frequency and tunnel diseases, and monitoring potential tunnel diseases through actual monitoring data. A traditional rigid foundation is changed into the flexible foundation, vibration loads generated when a train runs are absorbed and reduced through the flexible foundation, and then damage to a tunnel structure is reduced.

The application discloses a friction type cable-stayed cable damper and a cable force monitoring method, and the damper comprises a friction pair connecting steel plate, first clamping plates and second clamping plates arranged on the upper and lower sides of the friction pair connecting steel plate, a friction pair arranged between the first clamping plates and the second clamping plates and a clamping plate connecting plate; the friction pair is fixed with the friction pair connecting steel plate or the clamping plate connecting plate; the contact areas of the first clamping plates and the second clamping plates with the friction pair are provided with different roughnesses from outside to inside; the two clamping plates are fixed through a second clamping bolt; a bolt force sensor is arranged between the second clamping bolt and a nut; a displacement sensor is arranged on the clamping plate connecting plate; bolt pretightening force data collected by the bolt force sensor in real time and cable force data collected by the displacement sensor in real time are transmitted to a client through a data collector, and real-time dynamic monitoring of a working state of the damper is realized; there is no risk of oil leakage, the life cycle cost is low, and installation and maintenance are simple and convenient.