5results about How to "Improve maintenance-free" patented technology

The utility model relates to a self-aligning bearing, and provides a self-aligning bearing which can realize high bearing capacity and is maintenance-free in order to solve the problems of small self-aligning amount, high processing cost, low limit rotating speed, high assembly requirement or low bearing capacity of the conventional self-aligning bearing. The bearing comprises an annular outer ring, an annular inner ring arranged in the outer ring, a retainer arranged on the inner surface of the inner ring, a plurality of rollers arranged on the retainer, an O-shaped sealing ring, a lip-shaped oil seal, a sealing ring and a self-lubricating gasket, each roller is in a cylindrical shape; annular first grooves are formed in the two sides of the inner raceway of the outer ring; annular third grooves are formed in the two sides of the inner raceway of the inner ring; the lip-shaped oil seal comprises a first metal framework layer and a first sealing layer arranged on the first metal framework layer; the sealing ring comprises a second metal framework layer and a second sealing layer arranged outside the second metal framework layer; and the self-lubricating gasket is arranged between the inner raceway of the outer ring and the outer raceway of the inner ring.

A solid reactor core control drum comprises a cladding, a reflector, an absorber and end plugs, the cladding is provided with a containing cavity, the reflector and the absorber are contained in the containing cavity, and the end plugs are arranged at the two ends of the containing cavity to form a closed state; the reflector is provided with an arc-shaped reflecting surface extending along the inner wall of the containing cavity, the absorber is provided with an arc-shaped absorbing surface extending along the inner wall of the containing cavity, and at least one end plug is provided with an air chamber communicated with the containing cavity. According to the solid reactor core control drum, the reflector and the absorber can be firmly fixed and sealed for protection, and the transmutation gas generated by irradiation is accommodated through the gas chamber, so that the influence of irradiation damage on the precision and reliability of the control drum is avoided. The invention also provides a heat pipe micro-stack.

The utility model discloses a serialized and modularized hoisting balance beam-pumping unit. The whole machine structure is composed of a base module (1), a speed reducer base module (2), a tower module (3), a front support module (4), a bracket module (5), a walking beam module (6), a cross beam module (7), a walking beam bearing seat module (8), a walking beam support module (9), a horse head module (10), a crank wheel module (11), a crank pin module (12), a connecting rod module (13), a movable pulley block module (14), a fixed pulley block module (15), a steel wire belt fixing frame module (16), a steel wire belt module (17) and a hanging lump module (18). According to the technical scheme of the serialized and modularized structural specification design, the manufacturing cost is saved, the excellent maintenance-free performance is ensured, the requirement of mass production is met, and an international leading energy-saving technical brand is created for creating an economical oil production mode.

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.