Aligning sliding bearing for efficient air valve of subway

Abstract

The invention belongs to the field of machine parts, and relates to an aligning sliding bearing for an efficient air valve of a subway. The aligning sliding bearing comprises a bearing block body (1), a sliding bearing (2), a bolt hole (3), a demounting hole (4) and an oil hole (5), wherein the bearing block body is fixed with an air valve framework by bolts; the sliding bearing is connected witha blade shaft; the demounting hole is arranged in a square shape along the radial direction of an inner hole of a bearing block; and a position which is in the radial direction of the inner hole of the bearing block and is vertical to the length direction of the bearing block is provided with the oil hole. The spherical contact surface of the sliding bearing is matched with the spherical contact surface on the bearing block, so a sliding ball is difficult to slide off in the bearing block and runs more stably, and the spherical surface assembling mode can automatically adjust the concentricity of two ends of a fan blade shaft so as to effectively solve the problem of unstable running caused by the two non-concentric ends of the fan blade shaft because the fan blade shaft is too long when the air valve is in operation. The design of the oil hole of the sliding bearing block can ensure the spherical surface lubricating condition, reduce the friction, and improve the transmission efficiency and the service life of a material.

Description

technical field [0001] The invention belongs to the field of mechanical parts, and relates to an adjustable high-strength and high-performance sliding bearing used for a subway high-efficiency air valve. Background technique [0002] At present, the bearings of high-efficiency air valves for subways on the market mostly use simple metal sleeves. On the one hand, they do not have the self-aligning function after being assembled with the blade shafts, and cannot eliminate the unbalanced force caused by the uneven installation process of the blades. The operation of the fan blade is unstable. On the other hand, due to poor lubrication conditions or improper selection of metal sleeve materials, the service life of the bearing is short, which affects the normal use of the air valve. Contents of the invention [0003] The purpose of the invention is to solve the problems that the two ends of the fan blade shaft of the subway high-efficiency air valve are not concentric and the s...

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