Gantry crane is usually used for material handling outdoors, such as, in ports terminals, where the environment is severe, especially in the summer, the typhoon Storm weather may occur. On the other hand, the gantry crane has large crane structure with large windward area, which is prone to be blown away. How to ensure your gantry crane safety in such bad environment? There are tips to ensure your gantry crane safety in the windy area. To install windproof anchor device on your gantry crane is one of the effective measures.
Wind anchor device is a kind of important large gantry crane safety device, and its role is to fix your gantry crane firmly in the job site.
Gantry crane windproof devices
The device is connecting with crane operation field ground, simple structure, safe and reliable But with ground connection parts, must be in building docks built at the same time Need 4 sets of device when using, respectively installed on the cart running mechanism of four legs at the same time using bolt device at regular intervals along the rail on the site should be installed next, so that the wind came in a timely manner to lock the crane.
Manual rubber wedge is a simple and effective tool of wind, then insert it between the wheel and track, after the crane by the wind moving, rubber wedge on the wheel rolling, rolling friction between the wheel and rail into rubber wedge with the sliding friction between the orbit, resistance increases, the stop gate crane mobile manually rubber wedge disadvantage is that the need to rely on artificial insert and pull out, use convenient, in addition it and run institutions without electric interlock, sometimes accidents caused by mistake.
Pressure wheel fixed on the crane, the bottom has sunken wedge type, has a certain gap between them. When moving crane under the action of wind, wedge, along the wedge pressure wheel will can’t climb, vertical stress of wedge pressure round the wedge friction with the rail surface, when the frictional resistance can balance wind, crane will stop moving. Wedge with motion mechanism through raise and lower limit switch interlocking, to guarantee the normal work of the anti-creeper and prevent the disoperation run institutions. Wedge anti-creeper simple structure, low cost, high reliability, especially when the rail is lower than the plane, clip rails doesn't work, it can work normally But it with rubber wedge, when there is a typhoon, the crane could still with wedge sliding along the rail surface, so the other wind anchor device must be installed.
Large cranes with no wind to anchor device, both at home and abroad by strong wind blown away, slip touch attack to the track after the end of tilting accident a lot Therefore, open-air homework large hoisting machinery must be installed wind anchor device, in order to keep the crane fixed up and prevent the storms blow away.
The Gantry crane is particularly important in the wind problems, often in a small detail will not care about the problem, is the so-called pull the whole body, so the Gantry crane should pay more attention to wind problems. The following are the recommendations of the Gantry crane wind problem and should pay attention to the place:
The wind and anti-skid ability depends on the friction coefficient, friction coefficient varies greatly, so the design of the safety factor should be appropriately increased, so that the minimum friction coefficient is still the margin of friction, such as anti-skid device clamp The mouth contact surface roll out the tooth surface and the surface hardening, so as to improve the friction coefficient.
The anti-escape device cannot be alone to meet the work of wind pressure or non-working pressure of all-round security, should be combined with other devices to form a complete anti-wind anti-skid system.
The strength of the design for a variety of clamp, selection cases, the use of finite element stress analysis of the various components of the internal stress and deformation, internal stress (internal force, internal torque) distribution and inspection deformation and displacement of the relationship between the design, Modified design method.
Fourth, the study of friction identification method, the establishment of friction test, check the brake, clip rail clamp and the friction wheel friction surface is reliable friction coefficient.
1. Non-working conditions of anti-wind anti-skid requirements, should be installed anchorage device, the anchorage device should be able to independently withstand the wind load of the Gantry crane non-working state, in addition to plug-type can also be installed pull-type cable or other forms of anchors fixed device.
2. The working state of the wind braking device to be used brake and clamp device, the brake and release action can be interlocked with the operating mechanism, and should be able to remote control or automatic operation in the control room; wheel brake used to Gantry crane The car breaks in motion and works with clamp clamps to prevent sudden hurricanes.
3. The anchorage device shall ensure that the Gantry crane and its associated components are safe and reliable in the following cases:
4. The outdoor work of the orbital Gantry crane should be installed reliable wind and anti-skid devices, and should meet the provisions of the working state and non-working state anti-skid requirements.
5. The Gantry crane can not only install anti-wind braking device without anchoring device, or wind-resistant braking device should be able to withstand the wind load of the Gantry crane non-working condition.
5. Clamping clamp divided into active and passive (self-locking), active type is divided into manual and automatic, manually manual transmission of human-driven screw to the clip rail link force is not enough to cope with strong winds, and Encounter emergency state is not enough, the passive clamp force, with the wind the greater the greater the reliability of the active than the automatic rail clamp better.
Gantry crane basic: How to ensure your gantry crane safety in the windy area? The windproof anchor devices is one of the effective measures to fix your gantry crane in sever wind, even typhoon. Check your gantry crane, and install the windproof anchor devices to combat the bad wind.
If you have any question on the gantry crane windproof anchor devices or on gantry crane, overhead crane, jib crane or other Types of cranes, please feel free to contact us.
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