Electric single-girder portal crane

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Electric single-girder portal crane

General

Electrical Hoist Gantry Crane is used together with CD MD Model electrical hoists.It is a track travelling small and medium-sized crane. Its proper lifting weight is 5 to 10 tons, proper span is 12 to 30 meters, its proper working temperature is -25°C to 40°C

It has two controlling methods, namely ground controlling and room controlling.

Feature

1)Power source is three-phase alternating current,rated frequency is 50Hz, rated Voltage is 380V.

2)The altitude height of site is ought to be less than 2000M.

3)Flammable,explosive and corrosive gas are forbidden in the work environment.

4)The crane is forbidden to lift fuse and blend deleterious article and flammable explosive article.

Technical characteristics of single gantry crane

This crane has hard surface gear reducer and steel rope and three-in-one transmission mechanism. Protective functions are as the following: acoustic-optic alarm, hook automatic stop protector, circuit protector and over current and phase lose protection and intelligent limit.

The electric devices adjust speed without contactor spark module and fulfill frequency convert function to reach mini-speed and double speeds, which make travelling and lifting very steady. The operating board (handle) adopts 12V safe voltage.

The electronic controlling can be used more than 2 million times when the voltage is +5~-10% of 380V.

Choosing principle of single gantry crane

According to the working system and using field. Which system you will choose, field should go first.

Calculating the times per hour of starting and pulling-on recycle, you should make the practical time per day and continuous time (h).

When select or appraise, you should be sure such items as field, all the limiting size, ambient temperature, speed, time(h), intermission or continuous, the time of starting and pulling-on per hour, etc.

The above mentioned is just for reference. Reasonable selection, design and match can increase the working efficiency greatly.

Table technical data

Lifting capacity		t	5					10
Span		m	18	22	26	30	35	18	22	26	30	35
Lifting height		m	10			11		10/10.5			11/11.5
Work system			A5
Speed	Main lifting	m/min	9.0
	Aux lifting							9.0
	Trolley traveling		35
	Crane traveling		30
Total power		KW	22.8			25.8		36.8			39.8
Max wheel load		KN	160	166	185	231	233	225	256	239	286	298
Recommended rail		Kg/m	43 kg/m
Power supply			380V, 50Hz, 3P( we can design cranes according to client’s local power source)

Layout

Electric single-girder portal crane

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Q:Okay, I don't know how to answer this question; please help.The docks at Liverpool have more cargo than ever but employ fewer people than everExplain how this happened.: Cargo is now mostly shipped in big containers, which are lifted by crane onto trucks and driven awayThis approach takes far fewer people than in the old days.

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Q:How are the containers discharged or loaded to a vessel?: There are special Crane Horses to load and unload shipsIn Oakland, CA, there are many of these horses that look like something from Star WarsThey take the containers from the ships and place them onto trailers below and moved away with trucksCheck out the link to see them.

Q:I'm doing a search for my very first apartment, and i've found that apartment rentals are VERY expensive hereI'm going to do what I have to do; however, I wonder if renting a home would cost around the same? Why rent an apartment with people living on top of you making noise and under you, where you can't make noise, when you could just get a house instead? I don't know much about rent and living in a house, since I went straight from my parents home to college, and then to college apartments (where I am now), but I wonder what are the costs you would have to deal with when renting a say two bedroom house versus renting a one bedroom apartment? I know it depends on the area of course.and the types of homes.: The reason the original insulation had mold was possibly due to the sweating, or condensation that formed between the hull skin and the foam and whatever else sealed itAny other membrane you fit will have the same potential to create liquid, and it has to go somewhereSpray polyurethane insulation may be good, trimmed flush and covered with thin plastic sheet-board or thin epoxied ply to make a solid addition that will have much less potential for trapping moisturePerhaps sheets of expanded urethane foam cut to fit well, gaps filled with spray foam then glassed over and sealed with two pack will work wellVentilation is critical for any boat - also the air in the boat should be positively moved, ducted fans from solar panels, deflector scoops mounted onto deck vents or hatchesThe old polystyrene type sheeting often used back then is far less effective at insulating than urethane foam, about 6 to 1 less effective in factIt is why modern iceboxes are so much better than the older onesWhatever you do don't make a moisture trap against the hull! You may want to consider a heat reflective coating judiciously applied to the topsides which will be more effective than the original ideaEdit Good points Richard CI stick with the urethane foam board glassed over as most effective - I have just installed four fish rooms / freezer storage in a 67m fishing vessel, using injected foam behind marine ply glassed over And have done several cool rooms and freezer containers for commercial use, including my own I haven't found a better way either on cost or effectiveness We are very fortunate in this part of the world with boating, might get a bit too much heat, not coldSo we tend to put up shade and ventilation - and our winters are very mild so it's not too bad all year anywayWe think its cold in the low teens centigrade.

Q:How much weight can be lifted by an electronic Lego crane in 2 seconds if it has a 30cm string 2 AA batteries and the motor has a resistance of 80 Ohms???????? THANKU FOR YOUR HELP (:: 2x1.53, Pv^2/R9/80.1125wattsmxd/t .1125 m .1125x2/.3 .075kg 75 gramsThis is a bit of a guess but its in the right direction.

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