Notice of Tender for Bidding Project of Airport Capacity Evaluation of Phase III Expansion Project of Lanzhou Zhongchuan International Airport
The Lanzhou Airport Phase III Expansion Project is a key airport promotion project for 2018 that was included in the National “Three-Year Action Plan for Major Infrastructure Construction of Transport Infrastructure†(Development and Reform Foundation [2016] No. 730). In order to promote the construction of Phase III expansion project of Lanzhou Zhongchuan International Airport, an open tender for the evaluation of airport capacity is required. The bidder was Gansu Provincial Civil Aviation Airport Group Construction Command.
Electric dc motors were the
first type widely used, since they could be powered from existing
direct-current lighting power distribution systems. A electric Dc Motor's speed can be controlled over a wide range, using either a variable supply
voltage or by changing the strength of current in its field windings. Small electric dc motor are used in tools, toys, and appliances. The universal motor
can operate on direct current but is a lightweight motor used for portable
power tools and appliances. Larger electric dc motor are used
in propulsion of electric vehicles, elevator and hoists, or in drives for steel
rolling mills.
Areas of application: the electric dc motor rotor part of the armature iron core, armature, commutator, such as equipment, electric dc motor is suitable for most electronic products, such as electric screwdriver, laser, smart home, gas valve, etc
Applications:
Method of use: the best stable in
horizontal plane, installed on theelectric dc motor output
shaft parts, cannot use a hammer to knock, knock prone to press into the electric
dc motor drive, may cause damage to internal components, and cannot be
used in the case of blocked.
Operating
temperature range:
Electric dc motor should be used at a temperature of -10~60℃.
The figures stated
in the catalog specifications are based on use at ordinary room
temperature catalog specifications re based on use at ordinary room
temperature (approximately20~25℃.
If a electric dc motor is used outside the prescribed temperature range,the grease on the gearhead
area will become unable to function normally and the motor will become unable
to start.Depending on the temperature conditions ,it may be possible to deal
with them by changing the grease of the motor's parts.Please feel free to
consult with us about this.
Storage
temperature range:
Electric dc motor should be stored ta a temperature of -15~65℃.
In case of storage
outside this range,the grease on the gearhead area will become unable to
function normally and the motor will become unable to start.
Service life:
The longevity of
geared motors is greatly affected by the load conditions , the mode of
operation,the environment of use ,etc.Therefore,it is necessary to check the
conditions under which the product will actually be used .The following
conditions will have a negative effect on longevity.Please consult with us
should any of them apply.
â—Use with a load
that exceeds the rated torque
â—Frequent starting
â—Momentary reversals
of turning direction
â—Impact loads
â—Long-term
continuous operation
â—Forced turning
using the output shaft
â—Use in which the
permitted overhang load or the permitted thrust load is exceeded
â—A pulse drive
,e.g.,a short break,counter electromotive force,PWM control
â—Use of a voltage
that is nonstandard as regards the rated voltage
â—Use outside the
prescribed temperature or relative-humidity range,or in a special environment.
â—Please consult with
us about these or any other conditions of use that may apply,so that we can be
sure that you select the most appropriate model.
when it come to
volume production,we're a major player as well .each month,we rurn out
600000 units,all of which are compliant with the rohs directive.Have any
questions or special needed, please contact us, we have the engineer group and
best sales department to service to you Looking forward to your inquiry. Welcome
to our factory.
Electric Dc Motor,Mini Electric Motor,12V Electric Motor,Electric Motor Gearbox Shenzhen Shunchang Motor Co., LTD. , https://www.scgearmotor.com