Tower Crane - Buy TC5013A Tower Crane Product on Okorder
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TC5013A
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- Q:the cable of Crane I creates and angle of 30 degree angle from the horizontal and the cable of Crane II creates an angle of 45 degrees from the horizontal.-draw a figure that gives a visual representation of the problem-write a vector to represent the tension on the cable of Crane I-write a vector to represent the tension on the cable of Crane II-write a vector to represent the 20000 lb cargo container being lifted -calculate the tension on both cables. Justify your answer.....please help me!!! thank you!!!!:)
- So I can't tell whether the cargo container is one ton (2000 lbs.) or ten tons (20,000 lbs.). For doing the problem, I'm using 2000 lbs., so you might have to multiply the answers by 10. Also, I'll use A and B for the cranes instead of I and II. (Vertical): A sin 30° + B sin 45° = 2000 == A + √2 B = 4000 (Horizontal): -A cos 30° + B cos 45° = 0 == -√3 A + √2 B = 0 Solve those equations simultaneously to get A = 4000/(1+√3) = 1464 lbs. and B = √(3/2) A = 1793 lbs. (Answers) The vectors are: A = 1464 (-i cos 30° + j sin 30° = -1268i + 732j (Answer) B = 1793 (i cos 45°i + j sin 45°) = 1268i + 1268j (Answer)
- Q:What are the conditions of tower cranes, strictly prohibited?
- Tower cranes are prohibited under any of the following circumstances:1, the state explicitly eliminated products;2, more than the required service life, failed to assess the quality of products;3, products that do not meet the current relevant standards of the state;4, there is no complete security technical records of the product.Tower crane (tower crane) is called tower crane, also known as tower crane, originated in Western europe. A revolving crane mounted on top of a tall tower. The working space is large, mainly used for the vertical and horizontal transportation of materials and the installation of building components during the building construction. It consists of three parts: metal structure, working mechanism and electrical system.
- Q:I'm just curious about it, and i need it for a fan fiction story i'm writing. thanks ^__^
- Yes. It is genetically coded into japanese children before birth. As soon as they are born they know how to fold paper cranes. But it takes a couple of years for them to develop the hand coordination to actually do it.
- Q:Because they look a lot alike. Such as if you reinforced the design a little bit will it work?
- It might - but the center of gravity and the tripod might not be able to hold the weight of the jib, camera, counter-weights... and personally, I think it would be a pretty expensive mistake to watch my $2,000 camcorder fall and brake because the camera crane collapsed under the weight. A mic tripod is designed to handle about a pound of weight. A consumer camcorder, the jib and counterweights (and maybe a mic or whatever else you throw on there) can be between 5 pounds and 50 pounds. That's why companies like Kessler make what they make. And that's why the companies that makes lesser camera cranes (Cobra, CameraCranes, and others) never use a mic tripod. They use a heavy duty camera tripod or other LARGE, STRONG, item - not a mic stand.
- Q:What are the necessary safety devices on a tower crane?
- (1) lift height limit position limiterFor cranes with variable boom angles, the lifting motion must be stopped immediately when the top of the lifting device rises to the 8OOmm at the lower end of the boom.For luffing cranes, lift the top of the hook to the lower end of the frame 500mm. The lifting movement must be stopped immediately.(2) lifting moment limiter and maximum lift limiter;When the lifting torque reaches 90% of its rated value, the lifting torque limiter shall be able to issue an acoustic or red light to indicate the alarm. When the lifting torque exceeds its rated value and reaches 108% of the rated value, the lifting direction and outward direction shall be stopped.If the weight and amplitude indicator are set, the numerical value should be correct, clear and eye-catching. The digital error shall not exceed 5% of the indicated value.When the lifting weight exceeds the maximum weight, maximum lifting weight limiter should emit light or sound alarm, when the load exceeds the maximum weight of 6%, should stop to enhance the direction of movement, but to allow institutions towards the down direction.
- Q:and it appears to be looking up at the sky?
- I think critterman is the only one here that using any sense. Since the animal's neck is relatively long I think it's more than likely that it will be in an abnormal position after being struck. It's also possible, but I don't know for sure that the neck muscles that draw the head back are stronger than those necessary to allow it to lower.
- Q:Like the tall cranes on construction sites. I mean, suddenly they're just magically there!
- so trueee!
- Q:How high the tower crane needs to be installed with the wall pole. How is it stipulated in the national standard?
- The construction of tower crane installation, operation and dismantling safety technical regulations "(JGJ196-2010) design provisions in article 3.3 attachment device of tower crane: when the tower crane attachment for use, attachment device settings and free height should comply with the provisions of the instructions; when the attachment level distance, attachment spacing does not meet the the instructions should be carried out, design calculation and drawing the map produced and written instructions; the attachment device and embedded parts shall be the original component manufacturer or made with the corresponding ability of the enterprise; the attached device design, the main structure of the building to support the checking.The regulations on the supervision and administration of the safety of building cranes (Ministry of Construction No. 166th) states: "it is prohibited to install the standard sections and attachments of non original manufacturing plants on the free construction lifting machinery.".The independent height of the tower crane is determined by the manufacturer's manual. The independent height of the tower cranes of different manufacturers and different types is different. The installation of the tower crane needs to be installed with a wall rod. The specifications are stipulated in the instruction. The national standard requires the instruction of the manufacturer's manual.
- Q:This has nothing to do with travel, I'm just curious. I hate it when the news doesn't follow up on stories they focused on earlier. Does anyone have a status update on that crane that was swaying in the wind during 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:i want to buy china tower crane,how to cantact the manufacture?
- Jinan Jinkui Construction Machinery Co., Ltd, one of the famous manufacturers for tower crane in China, has been rated the best suppliers in tower crane industry in China for three consecutive years. Also the exportation of tower crane has been taking a leading position in domestic China. The perfect after sales service is one of the reasons for you to choose Jinkui tower crane of China
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Tower Crane - Buy TC5013A Tower Crane Product on Okorder
- Ref Price:
-
- Loading Port:
- Shanghai
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 1 unit
- Supply Capability:
- 5 unit/month
OKorder Service Pledge
Quality Product, Order Online Tracking, Timely Delivery
OKorder Financial Service
Credit Rating, Credit Services, Credit Purchasing
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