中英文中英文文献翻译-电梯曳引机
The n machine。also known as the main machine。is XXX power to the lift。It consists of a motor。brake。geared machine。and seat。The machine operates by using the XXX to move the car。There are two types of n machines。geared and gearless。depending on whether or not a geared machine is provided.
XXX。passenger lifts。and service lifts with speeds of up to 2.0m/s。To ce working noise and XXX。XXX used as the geared drive。The machine is composed of a motor。worm。gear。brake。rope。and seat。Figure 2-1 shows the components of the machine。The main parameters。such as lift load and speed。are determined by the horsepower and speed of the n machine。worm and gear numbers。gear。diameter of the n machine。rope grooves。and n。
Note: There were no us paragraphs to delete in this passage。XXX.)
The n of a forklift involves the use of a n machine。which has complex XXX start-up。brakin
values翻译g。XXX changing load。XXX。it is essential for the n machine to have low start-up current。high start-up torque。mechanical rigidity。and low noise。nally。the machine should be able to n well even when there are power XXX the normal range。As a special machine for lifts。the n machine requires a specific n of its shaft Hp using the following formula:
P = (G * v * α) / (75 * η)
Where:
P = shaft Hp of the n machine (kw)
G = rated load of the car (kg)
α = offsetting coefficient
η = XXX
v = lift speed (m/s)
It is important to note that some paragraphs in the original article had XXX.
For a XXX uses an Archimedes-type worm gear。the XXX een 0.5 to 0.55.On the other hand。for a forklift with a gearless n machine。the XXX 0.75 to 0.8.
For instance。let's consider an AC two-speed lift with a rated load of 2000kg and a rated speed of 0.5m/s。The worm gear used is of Archimedes type。and the rated speed of the motor is 960r/min。We need to XXX
To calculate the horsepower of the motor。we can use the given values of G = 2000kg。α = 0.5.v = 0.5m/s。and η = 0.5.
XXX into AC and DC types。The W191 n machine is an AC frequency-variable motor。Apart from the worm geared machine。bevel and star geared machines are also available。
The gearless n machine can be calculated using the formula P = G(1-α)v/(102*η*102*0.5)。where P is the power in kW。For the given values of G。α。and v。
and a mechanical efficiency of 0.5.the power comes out to be 9.8 kW.
is a type of n machine that is commonly used in high-speed XXX geared machines。it does not have any mechanical gears and instead has a XXX。This simple structure makes it more reliable and durable。as there are fewer moving parts that can wear out or break.
XXX: speed-variable DC motors and frequency-variable AC motors。Figure 2-2 shows an example of an AC frequency-variable gearless n machine.
XXX。As a result。they need to be XXX。XXX winding drives。which means that the force applied to the n sheave。compound winding sheave。and bearings is much greater than that on the n machine。This requires a longer shaft diameter。but also means that the gearless XXX.

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