JL7050 Topkit Tower crane for construction site

JL7050 Topkit Tower crane for construction site System 1

JL7050 Topkit Tower crane for construction site

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Loading Port:: Shekou

Payment Terms:: TT OR LC

Min Order Qty:: 1 unit

Supply Capability:: 100 unit/month

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Product Description:

Description of TOWER CRANE JL7050

1) JL7050 tower crane has competitive price and excellent quality, suitable for all kinds of construction project and can work under all kinds of work condition.

2) This kind of crane adopts standard section hydraulic lifting and connecting, and can decide the crane height according to the actual height of the building, and at the same time the lifting capacity will not be affected;

3) It has high working speed, good speed-adjusting performance, steady operation and high efficiency. Three-speed motor and mono-speed ratio decelerator are applied in the lifting struction, which enables heavy load low speed and light load high speed.

4) The crane has complete set of safety devices, which can guarantee the safe and high efficienct operation of the equipment. The machine is equipped with lifting height limiter, dolly range-change limiter, moment limiter, weight limiter, circumgyrating limiter, etc.

5)The machine has scientific layout and beautiful appearance. The operator's room is set independently on one side, with good vision field. It creates a good working environment for the operator

SPECIFICATION of TOWER CRANE JL7034

Max. working range 70m, tip lifting weight 5T and Max. lifting weight 20T.
Hoisting mechanism fitted with three speed motor, stable braking and less shock when shifting.
Trolleying mechanism can provide two operation speeds.
Free standing height (m) 66
Max height with attachment (m) 302
Working range can be adjusted（m）70/65/60/52/45
Min working range(m)2.8
Max lifting capacity(t) 20
Tip load @ 70m(t)5.0

Packaging & Delivery of TC7050

40HQ container

25~30days after deposit

JL7050 Topkit Tower crane for construction site

Q:I used to buy a new tower crane that was attached to someone else's unit and (the key Gou Er). Now I have set up a company myself and bought a key, Gou Er. The question is, now how can I put it back from someone else's key dog and bring it back to my own dog?Know about the urgent urgent urgent urgent call to inform the mobile phone can ah ~ ~ ~ ~ ~ ~ thank you!: Measures for the record and registration of construction hoisting machineryArticle 1 These measures are formulated in accordance with the provisions on the supervision and administration of the safety of construction cranes' machinery (Order No. 166th of the Ministry of construction) in order to strengthen the management of the record and registration of construction cranes.The construction and registration of the hoisting machinery as mentioned in the present Measures shall include the registration of the lifting machinery, the installation (disassembly), the notification and the use of the registration of the second.Third construction departments of the people's governments at or above the county level may use the computer information management system to handle the registration and registration of construction hoisting machinery, and establish a database.The construction administrative department of the local people's government at or above the county level shall provide the registration and registration and inquiry service of the building hoisting machinery within its administrative area.Article fourth rental, installation and use of units shall be submitted in accordance with the provisions of the lifting of construction machinery registration information, and the authenticity of the information provided by the responsible.The construction administrative department of the local people's government at or above the county level shall establish a system for the examination and registration of the hoisting machinery.Fifth construction machinery rental units or purchase building lifting units (hereinafter referred to as the "property units") in the construction machinery rental for the first time or before the installation, should be registered at the competent construction Department of the local people's governments at or above the county level to the unit of business (hereinafter referred to as the "equipment registration authority") for the record.

Q:i need a list of materials and a step by step precedure: I am assuming you mean a low power, miniature crane. You will want to wrap a iron object (a nail should work for light objects) in electrical wiring, the more times the better. Make sure you have a long length of wire after wrapping it around the iron object. Now, attach a rope to the iron object, this will be used to raise and lower it. The length of the rope has to be less than the length of the wires. Now, inside the crane have a battery. The stronger the battery, the stronger the electromagnet. Now, after connecting one of the wires to the battery, connect another one to a switch, then connect then switch with more wiring to the battery. This will turn the crane's claw on and off. The next part is up to you. If you want to be able to raise and lower the magnet, attach the rope to an axel and spin the axel to raise or lower the magnet. If you want to turn the crane, you need to place the arm on a swivel axis. Finally, to bring the magnet closer or farther, you will need a way to raise the arm, bringing the tip of the arm closer to above the center of the crane. I suggest you google some picture of cranes to understand this better.

Q:how does the power electronic drives employed in cranes?: The primary function of an electronic drive is to provide for operation at various speeds. Slow speed operation is used when moving a load into position. Faster speeds are used for moving loads over longer distances. When the operating speed is steplessly adjustable, ramped acceleration and deceleration control is easily provided as well. Controlled acceleration provides smoother operation because acceleration at a constant rate means accelerating with a constant force or torque. Electronic drives control torque and current during starting. They perform a function similar to a reduced voltage motor starter, but they do it steplessly, more efficiently, with more complete control of applied torque. They provide more torque per ampere of current than any other starting method. This is very beneficial for the frequent starting and stopping often required for cranes. Electromechanical motor controls for cranes require additional contactors, relays and other components to perform functions such as reversing, motor overload protection and braking. These functions are incorporated into the electronic controls with electronic drives. Electronic braking can return energy to the power supply and bring the load to nearly a complete stop before a friction brake is applied. For holding the load in position, an electromechanical brake is still required. Electronic drives can be used on bridge, trolley and hoist applications.

Q:Whats does the japanese crane symbolize?: The Japanese crane symbolizes serenity and hope. It is a legend in Japan that if you fold 1000 paper cranes, any wish will come true. There is a story about a girl named Sadako who died from radiation in Hiroshima after WWII who tried to fold 1000 paper cranes to be brought back to health. She nearly folded 1000, and died before then. People come to Hiroshima still today with 1000 folded paper cranes to honor Sadako.

Q:[tower crane] and [tower crane] what is the difference between, how to distinguish?: There are many nicknames for tower cranesTower Crane Tower Crane Tower

Q:explain thoroughly please: Sure. Let's say that a crane needs to hoist a load of 10 tons, and that because it needs to reach over some obstacles, needs to lift at a horizontal distance of 50 feet away. That creates a torque about the base of the crane of 500 ton·ft. By positioning a counterweight on the opposite side of the tower, the magnitude of the moment can be mitigated. For instance, let's say a counterweight of 10 tons is positioned at 25 ft on the other side of the tower. The moment produced by the counterweight is 250 ton·ft, so the net moment at the base is 250 ton·ft. Furthermore, when the 10 ton load is positioned and release, there is still a 250 ton·ft moment at the base of the tower; it has simply switched direction (say from rotating the crane to the right, to rotating it to the left). If you find this helpful, please award Best Answer!

Q:A crane operator was extended his Tadano crane boom(two section of boom out of five) at almost 0 degree boom angle. My question is-Is it safe to lift any load at 0 degree boom angle.: The answer is yes. The amount of the lift weight depends on the weight of the counter weights on the back of the crane. There is an indicator (printed or electronic) which indicates the maximum lift based on angle and extension. TexMav

Q:Method for operating tower crane: In the 2.11 operation, when lifting the weight, the weight should be higher than the height of the obstacle, at least 100mm.2.12 when the crane is approaching the track limit, it should slow down and stop in advance.2.13 when lifting heavy objects, not heavy lifting suspension instability, no additional weight in lifting objects, lifting scattered materials or special-shaped components must be used when the wire rope firmly tied to heavy lifting from the ground about 50cm stop, determine the brake materials, lashing and rigging, confirmation before lifting command.2.14 cranes must be adequately illuminated at night.2.15 crane in the stop, rest or midway power failure, the weight should be unloaded, not to weight suspended in the air.2.16 the operating room, no personnel shall enter, prohibited flammable and impede the operation of the items.2.17 is strictly prohibited or promotion personnel riding crane. Landing weight, weight is prohibited to stand.2.18 the boom and lifting pieces of cranes must be in safe distance from overhead transmission lines, and shall comply with the provisions of this schedule 30.1.6.2.19, two cranes in a track or two parallel or vertical orbit on the operation, should maintain the safety of any part of the distance between two machines, the minimum shall not be less than 5m.2.20 in case of any of the following circumstances, suspension operation shall be suspended:1., in the event of bad weather, such as heavy rain, heavy snow, fog and construction work surface has six (including six) above the strong winds, affecting safety construction.2. crane leakage occurs.3. serious wear of wire rope, to scrap standard (wire rope scrap standard see Appendix A).4. safety guards fail or display inaccurate.

Q:Under what circumstances does a tower crane require third party testing?: New clothes, relocation or transformation should be examined by the quality and Technical Supervision Bureau

Q:the question is :Two cranes can unload a ship together in 15 hours. The faster crane takes 16 hours less than the slower crane, if each were to unload the same ship alone. How long doesi t take for each crane to unload this ship? I done most of the math but i am stuck with this last part .15+- radical 1185/2: No. of hours for the slower to unload alone—x: 1/x + 1/(x - 16) = 1/15 (x - 16 + x)/(x? - 16x) = 1/15 15(2x - 16) = x? - 16x 30x - 240 = x? - 16x x? - 46x = - 240 x? - 23x = - 240 + (- 23)? x? - 23x = - 240 + 529 (x - 23)? = 289 x - 23 = 17 x = 40 No. of hours for the faster to unload alone: = 40 - 16 = 24 Answer: slower crane, 40 hrs; faster crane, 24 hrs Check: = 15(1/40 + 1/24) = 15([3 + 5]/120) = 15(8/120) = 15(1/15) = 15/15 or 1

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