• Hoisting mechanism 75JLF40 System 1
Hoisting mechanism 75JLF40

Hoisting mechanism 75JLF40

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Introduction

The products are independently developed and manufactured by our company via absorbing international and domestic advanced technologies.

Natinal Patented products:Patent 1:ZL2009 2 0243653.7

Hoisting Mechanism of Tower crane Patent 2:ZL2010 20226428.5.

Combined-type winding drum used in winch JLF series products adopt the structural style of variable frenquency motor +SNGW reducer+winding drum.S-NGM reducer is employed for the first time in China with the precision of all gears up to over 6 level and features of less noise, compact structure, light weight and convenient maintenance.

Specification

Model:75JLF40

Rated single rope tension(kN):40

Magnification:4

Rated power of the motor (kW):75

Working frequency(Hz):6-50-100

Hoisting speed (m/min):2.7-22-45

Hoisting capacity(t):16-16-8

Rope capacity(m):500(5 layers)/620(6 layers)

Nominal Diameter of wire rope (mm):Φ20

Q:A 3000-lb wrecking ball hangs from a 40-ft cable of density 10 lb/ft attached to a crane. Calculate the work done if the crane lifts the ball from ground level to 40 ft in the air by drawing in the cable.
The total work done by the crane equals the potential energy gained by the wrecking ball and the cable; the potential energy gained is W = V_final = Mg L + ρ L g L/2 which is the final potential energy of the wrecking ball and the cable added together. In the case of the cable, you take the center of mass of it which is located right at the center (L/2). The result is then W = 3000*32*40 + 10 * 40 * 32 * 40 / 2 = 4096000 ft-lbf = (4096000)*(0.001285067) BTU = 5263.63 BTU
Q:What is the difference between a jack up tower crane and a fixed tower crane?
The fixed tower crane means lifting the foundation of the tower body on the foundation or structure through the connecting piece.
Q:Does a crane have a pulley?AND....Is an axe a wedge?THANX CUZ I DONT KNOW WHAT IM DOING, AND OMG IM SO GOING TO FAIL MY TEST BECAUSE IM SO DUMB.
Yes, a crane has a pulley in order to reduce the workload. Each time there is a loop of the pulley made the workload is reduced.
Q:how do you win at the crane game?
im the master of the crane game. You gotta scope out the animal first! If it looks heavy then dont even bother. Whenever you grab hold of something its gonna pull it up and shake when it hits the top right? Thats why you go for something close to the hole it drops in. They have one where I work so I lock the wheels, grab the animal and pull the whole machine forward so that it just falls in the hole lol.
Q:It is my contention that God could be held accountable, at least as an accessory, for any crime. God had knowledge of these events in advance and did nothing.
God is not a fallen man that He needs to defend Himself, who is there who can accuse God other than proud mistaken fools?
Q:I am kinda really sick of paper cranes, and I was wondering if there's any good method of making paper birds that look, well, like birds. I checked out the one website with instructions, but, well, look at it. I tried it.
I haven't made the other birds on this site but they have a pelican and an owl. I think the pelican looks a bit crane-ish but it may look different in reality. Have fun!
Q:Kindly name the companies.
which okorder / -indian Search engine-quite effective for local searches..
Q:and it appears to be looking up at the sky?
they keep their heads held high so everyone who sees them knows that they died with dignity.
Q:All types of jack up cranes. How is the maximum lifting torque converted?
Tower crane lifting torque = crane maximum lifting weight * maximum operating range; for example: the maximum lifting weight is 2T*, the maximum operating range of 50 meters =1000KN.m.
Q:how much does a crane operator make ?
$35,000-55,000

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