ZHONGLIAN BRAND TOWER CRANE SL6520

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Q:There is no CAD map attached to embedded parts of tower crane?
What size do you want?. Each model is different. For example, the 5010 tower bolt embedded needs 24.
Q:What special operators should be equipped for the installation and disassembly of tower cranes?
According to the requirements of the 2.0.3 specification: tower crane tower crane installation and disassembly operation should be equipped with the following: 1, hold a qualified safety assessment certificate of the project and responsible for the safety of people and machinery management personnel;
Q:Method for operating tower crane
2.21, drivers must pass the escalator up and down, up and down the escalator, hand tools are prohibited items.2.22 do not drop any objects from tower cranes or defecate.2.23 winter in tower crane operating room heating, should be taken to prevent electric shock and fire measures.2.24 any tower crane with an elevator must comply with the instructions in the elevator manual. No overloading or violation of the operating procedures.2.25 multi machine operation, should avoid two or more than two tower cranes overlap in the radius of rotation. Special circumstances, need to overlap operations, must be safe distance between the vertical arm to ensure the safe distance and the lifting of materials, and have reliable safety measures approved by the competent technical leadership before construction.2.26 jib cranes in heavy lifting off the ground after lifting, rotating and walking three actions can be done at the same time, but the amplitude only alone, strictly with variable load. A crane that allows variable amplitude loading shall not vary at full load or near full load.2.27 lifting hoist is not installed in the rotating part of the crane, lifting operations may not continue in one direction continuous rotation.2.28 a crane with a mechanical torque limiter must adjust the tonnage indicator of the overload limit device according to the radius of gyration and the rated load at that radius.2.29 bend rail subgrade must comply with the provisions of the crane should turn on the outer rail surface of the sand, rail, rail and wings painted with grease. The counterweight box shall be turned to the direction of the outward turn. It is strictly prohibited to do lifting or turning on heavy roads.
Q:Tower crane body standard section connection bolt screw upward or downward, why?.
Up or down, there is no change in the firm torque of the connecting bolt. Simply choose to go up or down for convenience. Generally no special requirements, it is recommended that the thread upward, so that it is not easy to rust.
Q:What does "automatic tower crane" mean less than 100 tons per metre?
When you are working on this crane, the weight between the weight and the weight to the horizontal distance of the crane Center shall not be greater than 100 tons.For example, if the weight and crane center level distance is 10 meters, the maximum weight is 10 tons; if it is 20 meters, the maximum lifting weight is 5 tons; if it is 40 meters, the maximum lifting weight is 2.5 tons.
Q:Can the tower crane personnel install the construction elevator?
First of all, it is certainly impossible to install the elevator, because the tower and elevator certificate is not the same
Q:What is the inspection certificate for tower cranes?
Inspection certificate of tower crane must have two certificates:1, the manufacturer issued its own "product quality certificate"2. The product quality supervision and inspection certificate issued by the Technical Supervision Bureau
Q:What are the parts of a tower crane? What are their main functions?
The structural elements include the followingMain arm: carrying weight, and making the trolley have walking track.Balance arm: put up lifting mechanism, electric box, counterweight, and make tower crane to achieve balance torque, reduce the standard section of the bending moment.Tower cap: connect the main arm with the balance arm by the tie bar, so as to reduce the bending moment of the standard section.
Q:What is the scope of the installation and disassembly of self lifting tower cranes and the applicable range of the cost and the off-site transportation cost?
The installation and disassembly of the existing self rated tower crane, the first cost and the off-site transportation cost quota are divided by the lifting moment 1000kNm and 2000kNm of the jack up tower crane.
Q:What are the safety devices in 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.(3) amplitude limiting deviceA crane shall be equipped with a minimum amplitude limiter and a device for preventing the boom from rebounding backward. The trolley must be equipped with a trolley switch and a terminal buffer.(4) rail clamping device and walking spacing deviceTrack type tower cranes must be equipped with rail clamps. A walking limit device shall be installed at the same time.(5) anemometer;For cranes with a hinge height of more than 50m at the root of the boom, a anemometer shall be installed at the top.(6) lightning protection and anti electromagnetic wave induction device;For the crane whose hinge height is over 50m, the lightning arrester shall be installed according to the actual situation and the electromagnetic interference shall be taken.(7) tower crane shall install limit torque coupling in order to prevent slewing overload.

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