trolley mechanism 11JXF8
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Introduction
The JXL trolley mechanism is a self-designed new product based on the advanced foreign technology, and got the national utility mode patents.
The JXL trolley mechanism constitutes torque motor, half built-in planetary reduction gear wound roll, rack, and other components, which has advantages of smooth shift from the brake, transmission efficency, low noise, compact structure, and brakeing safe, reliable, accruate positioning, pleasing in appearance, and other characteristics.
After changing variable-frequency speed regulation motor and electronic system, the institutions can be changed to JXF trolley mechanism, which has the advantages of zero velocity brake, starting speed more stable and is more suitable to large tower crane and the trolley running on a demanding place.
Performance parameters
Model:11JXF8
Motor Power(KW):11
Rated single rope tension (N):7100
Single-rope linear velocity(m/min):0-65
Rope capacity(m):75
Wire rope diameter(mm):9
Relevant parameter of the suitable tower crane
--Max lifting load(t):18
--Max crest(m):77
- Q:how do they erect those large tower cranes you see on big building projects?
- A tower crane is usually assembled by a telescopic jib (mobile) crane of greater reach (also see self-erecting crane below) and in the case of tower cranes that have risen while constructing very tall skyscrapers, a smaller crane (or derrick) will often be lifted to the roof of the completed tower to dismantle the tower crane afterwards
- Q:electromagnetic crane
- Current sent through a coil of wire creates a magnetic field, which can be used to pick up ferromagnetic objects. Turn off the current, and the field will turn off (although it might take a few seconds to turn off all the way), dropping the object.
- Q:The mobile crane has a weight of 116kip and center of gravity at G1; the boom has a weight of 29kip and center of gravity at G2. Determine the smallest angle of tilt θ of the boom, without causing the crane to overturn if the suspended load is W = 38kip . Neglect the thickness of the tracks at A and B. Determine the smallest angle of tilt θ of the boom, without causing the crane to overturn.
- The key here is to simplify this as much as possible The equation is really: mass 1 x length 1 + mass 2 x length 2 = mass 3 x length 3 G1 * 6 ft = (G2 * X ft) + H3 * X ft) G1 = 116 kip G2 = 29 kip H3 = 38 kip Now it is an equilibrium of torque about the point where the boom pivots: 116 kip * 6 ft = 29 kip * Xft + 38 kip * Xft solve for X feet: X feet = 10.388 ft So the crane is in equilibrium when the load is length1 + length 2 times the mass = mass of motor * length 3 (10.388 ft * 29 kip) + (10.388 ft * 38 kip) = 116 kip * 6 ft The boom forms a triangle with the hypotenuse equals 12ft + 15 ft = 27 ft. The bottom of the triangle is 10.388 ft + 10.388 ft = 20.776ft So we have two sides of the triangle and now just need to find the angle where the triangle forms with those two sides: cosine of angle = adjacent side / hypotenuse cosine of angle = 20.766 / 27 = 0.7691 and the arc cosine of that = 39.7 degrees So rounding it off, angle of crane = 40 degree
- Q:Well I folded 100 or so cranes from cheap origami paper (red, yellow, green and blue) before I decided that I could fold 1000 cranes a reality. My dilemma is, do I keep the 100 cranes I did and fold 900 of them to fulfill my wish? Or if I discard the 100 cranes and fold 1000, will my wish be granted on the 900th crane? The reason I want to discard the 100 cranes is because it's for my wedding and the color placement of the old cranes isn't fitting at all.Yes I'm aware it's not scientific or realistic, but it's more of faith, I'm not dumb.
- Consider what you would like your 100 cranes to mean. Attach strings to your 100 cranes and then hang them in a tree etc so that the wind may carry your prayers where they need to go. Then start again to create the 1000 paper cranes you want for your wedding. PS: The making of the paper cranes involves an act of faith, not the right colour to match your wedding plans. In Japan, the crane represents peace and healing. When we consider the famous Japanese art-form of paper folding (origami) the crane comes to mind before all else. Sadako and the Thousand Paper Cranes (1977), a non-fiction children’s book written by American author Eleanor Coerr, tells the story of young Sadako Sasaki who lived in Hiroshima at the time of the atomic bombing. Sadako developed leukaemia as a consequence, and lived out the remainder of her short life in a nursing home desperately trying to create one thousand paper cranes. Supposedly, if someone could make a thousand paper cranes his/her wish would come true. Sadako wanted to live. Sadly, she only managed to fold 644 cranes. After her death, friends and family folded the remainder, and buried her with the one thousand paper birds. Today, a statue of Sadako holding an enormous golden origami crane stands in the Hiroshima Peace Park. People regularly leave paper cranes. The plaque on the statue reads “This is our cry. This is our prayer. Peace on Earth.”
- Q:why was the japanese crane hunted for its plumage in the 20th century?
- At okorder /
- Q:how long do i have to work as a yardhand in oilfeild to become a crane operator?
- You need to get licensed or certified to operate the crane. make sure you are qualified before you start complaining about not getting more challenging work. The world needs ditch diggers to so get back to work.
- Q:who invented cranes?
- Lost in the mists of time. We know that the Babylonians and Egyptians used simple cranes a few thousand years BC.
- Q:In the case of tower crane operation, the operation should be stopped
- In case of six or more gales, heavy rain, heavy fog, heavy snow or tower crane, you should stop working
- Q:Tower crane 10-5-20 is 6T, and 10-5-21 is 8T. What do you mean by tons?
- 6T/8T refers to the maximum lifting capacity of a tower crane. It doesn't matter what 10-5-20 has to do with it. Maybe your list of numbers is serial number.
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trolley mechanism 11JXF8
- Ref Price:
-
- Loading Port:
- China Main Port
- Payment Terms:
- TT OR LC
- Min Order Qty:
- -
- Supply Capability:
- -
OKorder Service Pledge
Quality Product, Order Online Tracking, Timely Delivery
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