Slewing reducer JH13

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Introduction

JH series slewing reducer is a hardened face planetary gear reduction device designed by our company according to the advanced foreign technologies with all gears adopting grinding process.The reducer has features of compact structure, stable operation, high transmition efficiency, low noise, long service life, high reliability, etc.Such series reducer can be equipped with torque motor, variable frequency motor and corresponding electrical control system to constitute RCV series slewing mechansim and JHF series slewing mechanism.

Specification

Model:JH13

Ratio:143

Rated output torque (N.M):9000

Output gear Parameter (Customization is avaible):m=10,z=13,x=+0.5

Weight(Kg):130

Parameters of RCV series matching torque motor--Rated stalling torque of the motor (Nm):95,120

Parameters of JHF series matching variable frequency motors--Rated power of the motor kw:5.5.

Recommended Tower cranes t.m:63~160

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Q:A crane is lifting a 500kg payload straight up at a constant speed of 0.7ms-1.?
a) As the crane is lifting at constant speed, there is no acceleration on the payload, therefore the net forces on the payload are equal to 0. Therefore the crane overcomes just the force of gravity = 500*9.81 = 4905 N Power = force * velocity = 4905 * 0.7 = 3433.5 W b) distance = speed * time = 0.7 * (2 * 60) = 84 m c) assuming that the cable breaks while it is still going up at 0.7 m/s, therefore initial velocity upwards = 0.7 m/s. using v² = u² + 2as: v² = 0.7² + 2(-9.8)(-84) = 1646.89 v = √(1646.89) = 40.9 m/s the payload will be travelling at 40.9 m/s when it hit the ground.
Q:Crane Style Kung-Fu?
No. You can make an argument that some body type may find it easier, but to say a particular style of martial art is only for one body type (tall skinny) is ridiculous. My White Crane teacher was barely 5'5 and thin, and he had no problem whipping my classmates who are in the 6' height range. Don't worry about your size. Forget the video and find a teacher. Crane is good, but so is any style that is taught by a good instructor. Besides, you are 15 and still have at least 5 more years of growth. If you start now, by the time you reach your max height, you will have been training at least 5 years and I'll bet anything your height is not going to be a concern for you.
Q:do you know where Ty Crane is now? The one in the film coach carter.?
No you guys, he is actually in the nba Ty Crane but he retired because he wasnt good enough
Q:How is a Crane dismantled?
After this the crew uses a mobile crane to assemble the jib and the machinery section, and places these horizontal members on an approximately 40 foot mast that consists of two mast sections. The mobile crane then adds the counter weights. The mast which is a large triangulated lattice structure typically 10 feet square then rises from this firm foundation. This triangulated structure gives the mast the strength to remain upright. The tower crane rises to its maximum height by using one mast section at a time, the crew uses a top climber that fits between the slewing unit and the top of the mast. This is done by hanging a weight on the jib to balance the counter weight. The crew then detaches the slewing unit from the top of the mast, this is done by using large hydraulic rams in the top climber to push the slewing unit up to 20 feet. The crane is then used to lift another 20 foot mast section into the gap opened by the climbing frame. Once bolted in place the crane gains a height of 20 feet. This process is reversed once the building is finished and its time to dismantle the crane and as stated earlier a smaller crane is used to dismantle the tower crane except the mast which is dismantled by the crane itself
Q:In the Pacific NW, what will get rid of Crane Flies in my yard?
If they are indeed crane flies, they have very short lives and will be gone in a short time, and do no harm - so why bother? In any case, I do not see how dolomitic lime would help - their larvae are aquatic, not in the dirt, and the adults do not feed.
Q:The most dangerous among crane accidents are:?
Dangerous to whom and exactly what does overturns mean? Operators are most likely to be killed when a tower crane breaks (is this an overturn?) because the operator is several hundred feet up in the air in the cab. Hitting power lines can be risky to the operator if dumb but staying in the cab is likely to be safe (stepping out may kill in touching ground) Overturning a ground based crane is going to hurt someone in the area much of the time.
Q:What is YOUR take on Louis Crane's idea of meduso-anthropic principle?
Well Im not into quantum physics much these days, but in his book Life and Light Lee Smolin proposes that if the quantum theory of gravity has two special features the universe would fine tune itself! If we perturb a Kerr-Newmann black hole so that the new universe will really form on the other side, and that the constants of nature might fluctuate in such a process so that the new universe would have sightly different physics than our own. Its well over my head at this stage; cause Im just an N.Y.U.K. graduate! NYUK NYUK NYUK Anyone wants to read up on it can go to the link below.
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:Mobile Cranes for Arctic usage?
this is not my area of study but i will give you something to consider. if you are looking for a large capacity crane for use on permafrost, you wont find one. the pressure placed on the permafrost by large weights will cause it to melt. anything that is heavy, like a house, will sink in the tundra just like it will in a swamp. for houses they excavate the foundation a build a giant wooden raft that the hose floats on. in ST Petersburg, Russians preferred a mix of reeds and slave laborers corpses's to build the raft. as long as the ground is not frozen there is somebody how makes what you want. if the ground is frozen, you will only find small machinery. best of luck ps dont look to hard. lots of diesel engines work great at sub-subfreezing temps.
Q:How does the torque of a construction crane relate to the torque of a car?
Torque is force x distance. In a car, the torque is the force twisting the drive axles, and the distance is the radius of the driving wheels. It controls the rate of acceleration of the car. In a crane, the force is that provided by the winch cable, and the distance is the length of the jib. It controls the weight the crane can lift.

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