Inner suction oilless piston brake air pump

Abstract

The invention discloses an inner suction oilless piston brake air pump. The inner suction oilless piston brake air pump comprises a permanent magnet motor; the structures on two sides of the permanent magnet motor are the same; support volutes are respectively mounted on two sides of the permanent magnet motor; first bearings are arranged in the support volutes; main shafts connected with the permanent magnet motor are mounted on the first bearings; wind wheels are arranged on the main shafts; eccentric wheels are mounted at the end parts, far from the permanent magnet motor, of the main shafts; eccentric shafts of the eccentric wheels are connected with piston modules; closed cylinders are respectively mounted on two sides of the piston modules; one ends of the cylinders are connected with cylinder covers, and the other ends are connected with cylinder shells; the cylinder shells are matched with the support volutes; sealing cover plates are arranged on the cylinders, the cylinder shells and the support volutes; and intake cavities are formed in the lower ends of the cylinder shells. The inner suction oilless piston brake air pump is compact in equipment overall structure, reduces the size, reduces the weight, and reduces the energy consumption.

Description

technical field [0001] The invention relates to the technical field of brake air pumps, in particular to an internal suction type oil-free piston brake air pump. Background technique [0002] Oil-free air compressors play a vital role in new energy electric drive vehicles. They usually provide pneumatic systems for new energy electric drive vehicles, and operate the brakes of new energy electric drive vehicles through the pneumatic system. The structure of the air intake system of the current oil-free air compressor is to install an air filter in front of the suction end of the machine head, and connect the crankcase through the breathing manifold in the middle to balance the pressure of the crankcase. The intake air of the oil-free air compressor passes through the air The filter directly enters the cylinder, and the filtered intake air can effectively reduce the wear of the air compressor and prolong its service life. However, there are certain defects in this air intake ...

AI Technical Summary

Problems solved by technology

However, there are certain defects in this air intake structure: the air flow pulsation of the piston air compressor itself is obvious, which has a certain impact on the intake air; the oil-free air compressor does not have lubricating oil to cool the bearings, if the crankcase If there is no air flow, the connecting rods, connecting rod pins and crankshaft bearings inside the crankcase will reduce their life due to high temperature; the air filter currently used in the intake system of oil-free air compressors for new energy electric vehicles Cylindrical air filters are generally used. When installing such cylindrical air filters, a large maintenance space needs to be reserved, resulting in an uncompact structure of the air compressor, which is inconvenient to use in the small space of new energy electric vehicles.

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