trolley mechanism 11JXF8

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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:11JXF8

Motor Power(KW):11

Rated single rope tension (N):7100

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

Rope capacity(m):75

Wire rope diameter(mm):9

Relevant parameter of the suitable tower crane

--Max lifting load(t):18

--Max crest(m):77

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Q:Tower crane and construction hoist service life? What are the norms and standards? How to detect?
According to Hangzhou quality safety supervision station (2011) No. 56 document:Six, strengthen the use of longer construction crane management1, more than the required number of tower cranes and construction hoist should be qualified units for security assessment, the specific years with reference to the following requirements.Tower crane: 630KN.m (excluding 630KN.m), factory more than 10 years of age (including 10 years); 630KN.m1250KN.m (excluding 1250KN.m), factory more than 15 years of age (including 15 years);
Q:Tower crane body standard section connection bolt screw upward or downward, why?.
Usually it is worn from top to bottom, so that the nut is loose and the bolt will not fall directly
Q:Under what circumstances are winches used and under what circumstances tower cranes are used?
First of all, what you say should be a derrick or a Longmen frame. In any case, the derrick or tower crane should first meet the construction requirements, then the economy and safety requirements. To meet the construction requirements, it is much better to choose the derrick, of course, economically and safely. Derrick is a simple nonstandard equipment. It is easy to install, use and disassemble. It has low running cost and less safety risk than tower crane. The derrick is suitable for construction under 30 meters or less, especially for multi storied buildings and single pieces. The volume and quality are not more than 2 tons.
Q:What is the difference between a tower crane QTZ31.5 and a QTZ40?
Lifting moment, arm length, elevation is not the same ah! Specifically, the maximum lifting weight of QTZ315 is 3 tons, the length of the arm is from 38-42 meters, the elevation is 27-28 meters; the maximum QTZ40 is 4 tons; the length of the arm is 42-48 meters; the elevation is 29-32 meters.
Q:Equipment safety of tower crane
The boom of a tower crane is divided into two types: horizontal and compressed arms. When the movable arm is horizontal, the carrier car runs along the horizontal arm with variable amplitude and amplitude, and the movable arm is longer, but the boom has a larger deadweight. The arm for the strut type when the tractor boom luffing mechanism pitch amplitude, amplitude motion than horizontal smooth, but its relatively small weight.The weight of a tower crane varies with its amplitude. The product of the weight and the amplitude is called the load torque, which is the main technical parameter of the crane. Through the rotary mechanism and slewing tower crane, lifting height, rotation and walking the inertial mass, so it needs to have good control performance, especially the lifting mechanism can fast, slow, heavy and light load installation fretting. In addition to the general use of resistance speed regulation, but also often use eddy current brake, FM, pole change, SCR and mechanical and electrical joint speed regulation. When the crane in the layout to drawing, especially in real estate development area, residential buildings, such as tower crane, but also to consider the safety distance of adjacent tower crane, two in horizontal and vertical direction to ensure the safe distance of not less than 2m, the adjacent tower crane tower crane and interference can not occur. Try to ensure that the tower crane in the wind is too large to be free of rotation. The safe distance between the rear arm of tower crane and adjacent buildings shall be no less than 50cm. The safe distance between tower crane and power line meets the requirement.
Q:Can the attached arm of the tower crane be welded?
The following points: the calculation of tower crane according to the instructions provided with the attachment of the building, a maximum load attachment device (Fig. 14-44), therefore, should be in the way of adhering bar load as the design or check attached bar section basis.
Q:What are the qualifications for site installation and acceptance of tower cranes and construction lifts?
These do not worry about you, these large machinery is a professional installation team, security, demolition,
Q:How much height should tower crane work at M?
Try to ensure that the tower crane in the wind is too large to be free of rotation. The safe distance between the rear arm of tower crane and adjacent buildings shall be no less than 50cm. The safe distance between tower crane and power line meets the requirement.
Q:Tower crane technical condition GB/T 9462-1999 has been cancelled? If so, what is the new standard?
This standard applies to tower cranes defined in GB/T 6974.3.This standard does not apply to mobile cranes equipped with tower cranes. This standard compares with the 5 standards such as GB/T 9462-1999, the main change is as follows:- redefining the type identification principle of tower cranes and eliminating the parameter series in JG/T 5037-1993;
Q:How to build a tower crane?
4, combination and installation with the boom, hung with arm pull rod.5, the assembly and installation of crane. This boom just installed in the rotary device, the other end is able to lift and hang rod, in accordance with the installation instructions.The power supply auxiliary hoist with 6, switch on the tower cap following installation, the installation of counterweight boom hoist with the.

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