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The history of hydraulic motors
source:Industry News release time:2022-10-17 Article author:yu Popular:Air band saw
One of the first rotary hydraulic motors developed was built by William Armstrong for his Swing bridge over the River Tyne. For reliability, two motors are provided. Each is a three-cylinder single-acting swing engine. Armstrong has developed a variety of hydraulic motors, both linear and rotary, for a wide range of industrial and civil engineering tasks, particularly for wharves and moving Bridges.
The disadvantage of simple fixed-stroke hydraulic motors is that they use the same volume of water regardless of the load and are therefore wasted on some power. Unlike steam engines, because water is incompressible, they cannot be controlled by throttling or valves. To overcome this problem, a variable stroke motor was developed. Adjusting the stroke, instead of controlling the intake valve, now controls engine power and water consumption. Of these, xxx were ArthurRigg's patented engine from 1886. This used a double eccentric mechanism for a variable stroke power press to control the stroke length of a three-cylinder radial engine. Later, swashplate engines with adjustable swashplate angles would become a popular way to build variable-stroke hydraulic motors.
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