Slewing reducer JH08
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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:JH08
Ratio:164
Rated output torque (N.M):6000
Output gear Parameter (Customization is avaible):m=10,z=12,x=+0.32
Weight(Kg):90
Parameters of RCV series matching torque motor--Rated stalling torque of the motor (Nm):75,95
Parameters of JHF series matching variable frequency motors--Rated power of the motor kw:4.4,5.5.
Recommended Tower cranes t.m:40~125
- Q: (a)What is the power output of the crane. (ignoring losses)?(b)If it takes the cran2 2 minutes to raise the payload to its final height, how far above the ground is this?(c)If the cable were to break as the payload reaches its final height, how fast would it be traveling as it hit the ground?
- 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 v? = u? + 2as: v? = 0.7? + 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: Jon and Paul are folding origami cranes. If Paul works alone he can fold 100 cranes in 5hours. together they can do the same job in 3 hours. how much time would it take for Jon to fold 100 cranes alone? Please show your work. :)
- Paul does 100 cranes in 5 hours So in 1 hour he does 20 cranes In 3 hours he does 60 cranes and balance 40 cranes Jon does Jon = 40 cranes in 3 hours So 100 cranes = 100/40 X 3= 7.5 hours ANSWER
- Q: I currently have 1999 origami paper cranes. And I haven't made my 2000th yet because I don't know what to wish for :3So I wanna know...Do you have to make your wish right on the 1000th one? Or can you make the 1000th one and save it until you think of something good to wish for.I'm serious. :3
- wait, you folded 1999 paper cranes and you still didn't have enough time to come up with a wish? I recommend that you wish to become more decisive...
- Q: how does a crane operator's knowledge of where the centroid is generally located for most uniform objects help them perform their job more safely?
- Usually it is the rigger who attaches the lifting gear not the crane operator who needs to know about centriods and even then the real trick is getting the slings or other lifting devices in the exact place. That tends to be a bit of trial and error unless the lifting points are clearly marked.
- Q: I'm a bit confused as to what happened to him. I guess I skimed a bit at a certain important part of the book. When Seneca Crane's name was written on the dummy during training, why did the people gasp at the name written in berry juice? What happened to him? PS. I am at the begining of Mockingjay. So no spoilers please. (:
- Seneca Crane Hunger Games
- Q: I am doing uni coursework to design an ergonomic layout for an operator cab for a tower crane and so I need to list the required operator controls.Thanks!
- There are only two control levers that are on a tower crane.There is one on either side of the seat called joy sticks the right side joy stick controls the hoist cable to go up and down pushed forward to go down and pulled back to hoist up.The left has four functions it controls the swing of the crane and also the boom of the crane to control the swing you push the lever to the left to swing left and push the lever right to swing right.You pull the lever back to boom up and puh it forward to boom down.
- Q: My boyfriend just spotted a baby crane by a tree. It looks like it fell out. A dog was sniffing around so he took the baby crane to his place. I'm trying to find information about cranes, but I find nothing since they're not usually pets unless they're some rare breed. I would really appreciate any advice or input on how to care for the crane until it can fly. Also, how old are cranes when they fly?
- In the wild they will eat small rodents, snakes, worms, grasshoppers, crickets and insects. Also give it some water. You can find some of these at the pet store. For it's health I would not feed it any human foods.
- Q: Just wondering i am so confused
- It's a crane thing. Seriously though - overhead crane, gantry or polar crane!
- Q: These cranes always stay higher than the construction process but I have never seen how they are extended to stay above all of it. They come in two formats, free standing and those attached to the building. The possibilities that I thought of was that maybe they use another crane to lift the housing and the horisontal arm to put in more modules into the vertical part; or that they extend it by some way by putting modules in at the top or bottom and that the crane has some self-lifting mechanism to accommodate the insertion of more modules. However, I have never seen this being done, nor does the construction of these cranes point to its ability to do so. The only other possibility that I could think of was that the crane is set up at the outset to be higher than the completed height of the building, hence there is no need to extend it but this does not explain how they do it for very high buildings where the crane is attached to the building and seems to grow higher with the building.
- The cranes are self erecting. The cranes tower is raised in sections. The lowest section is jacked up to the correct height and then a new section inserted and so on.
- Q: Since now everyone will know what's coming when you get in the crane kick position, and the element of surprise is gone, has the crane kick become an extinct move? Do martial arts experts not like the Karate Kid for ruining the crane kick in the way magicians don't like other magicians who reveal their secrets?
- Very few people have any idea whatsoever how the crane kick is applied. It is no way portrayed accurately in the movie. Anyone in the world with any modicum of common sense should be able to figure out intuitively you don't just stand on one leg and wait for some one to get close enough to hit. The crane kick has several applications and they are all in motion during specific sets of circumstances. I see no reason to start educating the world on how crane kicks are actually applied. If you want to learn go find a White Crane style instructor.
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Slewing reducer JH08
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