trolley mechanism 4JXF4

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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:4JXF4

Motor Power(KW):4

Rated stalling torque of torque motor(N.m):

Rated single rope tension (N):4500

Single-rope linear velocity(m/min):0-58

Rope capacity(m):63

Wire rope diameter(mm):8

Relevant parameter of the suitable tower crane

--Max lifting load(t):10

--Max crest(m):65

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Q:Why are there so many cranes in London?
At present a large number of tall buildings are being erected in London which accounts for the cranes. One area in particular is around Vauxhall, where there was an accident recently when a helicopter crashed into a crane being used for such a purpose. Just have a look at this www.guardian.co.uk/artanddesign/2...
Q:what is the load combination with crane load and seismic load according to asce?
Uh, depends on if you're using ASD or LRFD load cases out of ASCE 7-05. I also think IBC 2006 sometimes changes the fine print and also offers their own load cases for ASD and LRFD. A starting point (LRFD case 5 ASCE 7-05) might be 1.2D+1.0E+ L, and for ASD - case 6 - D + 0.75(0.7E) + 0.75L.
Q:What's the difference between QTZ63 and qtz630, isn't it the same kind of tower crane?
Should be the same series, but lifting weights are not the same
Q:Dream about Cranes.........?
First of all, to see a crane in your dream, represents happiness, maternal love, and your gestures of good will. You look out for those who are near and dear to you. Alternatively, a crane signifies tact, immortality or vigilance. Furthermore, dreaming of an angel can mean two things. Purity, protection, comfort and consolation. Pay careful attention to the message that the angels are trying to convey. These messages serve as a guide toward greater fulfillment and happiness. Alternatively, it signifies an unusual disturbance in your soul. Angels may appear in your dream as a result of your wicked and mean-hearted activities.
Q:Any ideas as to how I can gift 1000 cranes + messages?
A clear Glass vase would be cool, the colors of the cranes would make it decorative, and he could reach in to read one whenever he needs a pick me up. It is especially a good idea for the hospital, since they sometimes frown on flowers for allergy reasons. I also love the idea of a mobile, but that would be huge and time consuming, also the messages would be hard to read. But perhaps you could take 20 and turn those into a mobile, tie them to a stick with sewing thread, and plant the stick in the jar or vase you use to display the others.
Q:I need the Safe working load for a Crane Lift Formula......Please Help?
Normally you would get a chart for that crane and you look up the SWL at the extension and angle you would want to use, but you can calculate this too. Basic formula; mass*distance = newmass*newdistance, in the case you have described you have to take into account that the distance is not the load arm as it is not at a right angle to the force the mass has and therefore you would have to work that out via trigonometry. Any clearer?
Q:What other actress of the 1960s who could have done the role of Marion Crane in Psycho,in place of Janet Leigh?
Believe it or not? Alfred Hitchcock had thought Vera Miles would have been good in that role. He had one of his mini-crushes on Vera, and had planned to make her a superstar. However, he lost patience when Vera decided to enjoy her married life and have babies. Vera had no burning desire to become a superstar, and was happy with the work she was doing. She was also very smart in another way. She said that those parts worked out well for the blonde, sexy women that played them, but that just wasn't her look or her approach to acting. Vera Miles was in the movie Psycho, but she played the part of Marion Crane's sister. I've always thought that Janet Leigh was perfect in that role. She was so beautiful and unbelievably sexy that when she was on the screen? You couldn't stop watching her. Her ample bosom was an attention-getter all by itself. No offense to Janet Leigh, but I don't know if anyone cared if she could act or not! However, she did a fine job in Psycho.
Q:What are the "2 magnification" and "4 magnification" mentioned in the lifting characteristics table of tower cranes?
Popular saying: "car to hook this section of vertical distance, you see 4 wire rope is 4 magnification, you see 2 wire rope is 2 magnification.".
Q:NYC crane status post-Sandy?
My friend, that is a good question. According to the latest news conference from the Mayor, the crane's boom arm is secured to the structure. However, West 57th Street between Broadway and 7th Avenue is closed until farther noticed. In addition, the 57th Street-7th Avenue subway station on the N, R and Q Line is closed and trains are bypassing the station in both directions, according to the MTA. Good luck Native New Yorker
Q:endangered species slogan for whooping crane?
**** the whooping crane

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