trolley mechanism 11JXF10

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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:11JXF10

Motor Power(KW):11

Rated single rope tension (N):10000

Single-rope linear velocity(m/min):0-65

Rope capacity(m):83

Wire rope diameter(mm):10

Relevant parameter of the suitable tower crane

--Max lifting load(t):25

--Max crest(m):85

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Q:How much does it cost for a crane to come to a worksite and put a roof on a house being built?
of course you can hire a crane for the day, First contact a local crane hire company, they will probably visit your site to see what size crane you need, This will not come cheap, the driver has to be paid for the day and the crane costs have to be included,
Q:When should a crane be load tested?
if crane using regularly more then 8 hrs test should be every 4 months 8 months and full sevice at 12 months............ Load Testing Services ACECO provides inhouse vertical load testing services for load bearing equipment. Examples of equipment that can be load tested: • Below the hook lifting devices • Hoists • Hooks • Testing can be performed to meet ASME B30.20, B30.10, and B30.16 as well as ANSI N14.6. • Standard inhouse 50 ton load testing capacity. • Ability to test higher load capacity devices (Up to 5,000,000 pounds). • Have tested up to 640,000 pounds (320 tons). • Engineering manufacturing available to provide lift fixtures for test purposes. • Can provide nondestructive testing of critical welds and critical locations. • Inhouse capability to make weld repairs using AWS D1.1 qualified procedures and welders. • Calibrated test weights available. • Testing can be performed in accordance with 10CFR50,Appendix B Quality Program. • Certificates of Test and/or Test Reports can be provided. • Can provide onsite load testing services, including supply of calibrated weights.
Q:is this a grey crowned crane?
yes the bird is a grey crown crane...as you can see it has a red spot on the neck...and a large hairy looking crown...it also has a white skin cheek patch.
Q:Which is the main basis for the disassembly and assembly process planning of tower cranes?
12 installation process;13 safety device debugging;14 major hazard installations and safety technical measures;15 emergency plan.2.0.12 tower crane disassembly special program should include the following content:1 project overview;2 plane and elevation of tower crane position;3 disassembly order;Weight and suspension position of 4 parts;5 disassembly type, performance and layout of auxiliary equipment;6 power settings;7 construction personnel allocation;8 rigging and special tools;9 major hazard installations and safety technical measures;10 emergency plan.
Q:Did Noah build the Ark with no power tools, nails, or crane?
Yes, but it took around 50 years and he had the help of three strong sons.
Q:The mobile crane has a weight of 116kip and center of gravity at G1; the boom has a weight of 29kip and center?
The key here is to simplify this as much as possible The equation is really: mass 1 x length 1 + mass 2 x length 2 = mass 3 x length 3 G1 * 6 ft = (G2 * X ft) + H3 * X ft) G1 = 116 kip G2 = 29 kip H3 = 38 kip Now it is an equilibrium of torque about the point where the boom pivots: 116 kip * 6 ft = 29 kip * Xft + 38 kip * Xft solve for X feet: X feet = 10.388 ft So the crane is in equilibrium when the load is length1 + length 2 times the mass = mass of motor * length 3 (10.388 ft * 29 kip) + (10.388 ft * 38 kip) = 116 kip * 6 ft The boom forms a triangle with the hypotenuse equals 12ft + 15 ft = 27 ft. The bottom of the triangle is 10.388 ft + 10.388 ft = 20.776ft So we have two sides of the triangle and now just need to find the angle where the triangle forms with those two sides: cosine of angle = adjacent side / hypotenuse cosine of angle = 20.766 / 27 = 0.7691 and the arc cosine of that = 39.7 degrees So rounding it off, angle of crane = 40 degree
Q:How much does it cost to build 18, 22, 35, 40, 50, 70, 100, and 120 ton cranes?
You would have to contact the crane manufacturer. Each size would have different cranes that meet that requirement, eg portable versus not portable. That's assuming those are total crane weight numbers? Or are they lifting capacities?
Q:stories about paper cranes?
Sadako and the Thousand Paper Cranes by Eleanor Coerr - about a girl who gets luekemia from the Atom bomb dropped on Hiroshima and her making paper cranes to pass the time in the hospital.
Q:Follow up question about Sand Hill Cranes?
No, no, no.....eat chicken and leave the cranes alone.
Q:The earthing resistance of tower crane shall not be greater than that of the tower crane
The lightning resistance of tower crane (tower crane) on the construction site shall be no more than 4 ohms.I. tower crane GB/T 5031--20085.5.5.9 lightning protectionIn order to avoid lightning stroke, the main structure of the tower crane, the motor frame and all the electrical equipment metal shell, wire metal protection tube should be reliable grounding, and its grounding resistance should be no more than 4 ohms. When multiple repetitive earthing is adopted, the grounding resistance shall be no more than 10 ohms.Two. Safety regulations for tower cranes GB 5144 - 20068.1.3 tower crane metal structure, track, all electrical equipment metal shell, metal line pipe, safety lighting transformer, low voltage side should be reliable grounding, grounding resistance is not more than 4 ohms. Repeated earthing resistance is not greater than l0. The selection and installation of the earthing device shall comply with the relevant requirements of the electrical safety.The insulation resistance of the 8.1.7 main circuit and control circuit shall not be less than 0.5M ohm.

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