2results about How to "Improve maintenance-free" patented technology

The utility model relates to a kind of self-lubricating ball spline in the ball spline field, including spline barrel, spline shaft and ball return device, ball return device is set to the both ends of spline barrel, spline shaft passes through spline barrel, the surface of spline shaft is provided with guide groove, the ball return device is provided with lubricating assembly, lubricating assembly includes oil storage cavity, filling port, pressurizing port and infiltration hole, filling port, pressurizing port and infiltration hole are all communicated with oil storage cavity, filling port and pressurizing port extend to the side wall and end face of ball return device, infiltration hole extends to the inner wall of ball return device, the end of infiltration hole close to the inner wall of spline barrel is provided with necking, necking place is provided with the oiling ball that can roll, oiling ball and guide groove roll contact, realize the circulation track of ball, especially the long-acting, uniform, active lubrication of key guide groove and ball return device area, significantly improve the service life, working stability and maintenance-free of product.

The application relates to the field of battery design, and discloses a lead-acid battery with prolonged service life based on a suspension structure; the battery comprises a battery shell, a cover body arranged at the upper end of the battery shell, positive plates and negative plates arranged in the battery shell, and a closed cavity formed by a bottom and a top cover plate; the positive plates are suspendedly installed through a top suspension mode, a vertical height H is reserved between the bottom end of the battery plate and the bottom of the battery; the lower end of the positive plate and the lower end of the negative plate form a height difference; the upper end of the positive plate is provided with at least one hanging lug; support rods are arranged in the closed cavity, and the hanging lug of each positive plate is hung on the support rod; the hanging lug is in a ring-shaped, U-shaped or circular open structure; through the positive suspension optimization structure, the reliability of the battery can be improved, and the probability of faults of the battery in the use process is reduced.