Crane Talk I 2021-12-04 11:48:43

Outdoor Gantry Crane Safety- Windproof Anchor Devices

How to ensure safety of outdoor gantry crane for windy application ? Check windproof anchor devices for outdoor gantry crane to enhance outdoor gantry crane material handling safety.Windproof anchor device is a kind of important large gantry crane safety device for bad weather applications, and its role is to fix your outdoor gantry crane firmly in the workstation site.

The device connects to crane operations on the ground, has a basic structure, and is safe and reliable. However, ground connection pieces must be included in the construction of docks at the same time. When utilizing, 4 sets of devices are required, which should be put on the crane running mechanism of four legs at the same time, using bolt devices at regular intervals along the rail on the site, so that the wind can lock the crane in a timely manner.

Anchor devices for outdoor gantry crane

Gantry cranes, quayside cranes, portal cranes, tower cranes, and other large-scale equipment are typically used outside, with a vast windward area and high wind load. These items must be provided with reliable anti-wind and anti-sliding systems to avoid being blown or flipped by heavy winds. The outdoor crane is pushed by the high wind due to defective design or action failure of the anti wind and anti slide mechanism, and there are numerous accidents of being blocked and flipped at the end of the track. The structural properties of various anti-wind and anti-slide devices that might be selected are listed below:

When calculating the anti-wind and anti-slide device, the outdoor crane must remain stationary when there is no wind. The influence of the brake and wheel flange on track side friction is neglected at this time.
Many windproof and anti-sliding devices fail to meet the safety standards of the maximum non-working wind pressure, necessitating the addition of an anchoring mechanism.
The crane running mechanism must not be initiated while the anti-wind and anti-slide device locks the track. Between them, there must be electrical interlock. Only when the anti-wind and anti-slide device is unfastened can the running mechanism be initiated.
To avoid major crane vibration outside, the anti-wind and anti-slide device's locking action time must lag behind the crane operating mechanism's stopping time.
The friction coefficient determines the anti-wind ability of the anti-wind hang slide device. Because an outdoor crane works in the open air, the value of the crane changes dramatically when the weather changes, thus the safety factor should be increased appropriately in the design.
By rolling out the fine teeth on the wind and anti-slip device's jaw and surface quenching, the friction coefficient may be raised and the wind resistance capacity approximately doubled.

Large cranes without a wind anchor system, both at home and abroad, are prone to slipping touch attack to the track after a tilting mishap. As a result, wind anchor devices must be put on open-air homework big hoisting machinery in order to maintain the crane in place and prevent storms from blowing it away.

Suggestions and attentions on gantry crane windproof

The Gantry crane is especially significant in wind difficulties, as minute details sometimes go unnoticed, resulting in the so-called pull of the entire body, therefore the Gantry crane should pay greater attention to wind problems. The following are the Gantry crane wind problem recommendations, with special emphasis to the location:

Because the wind and anti-skid abilities are dependent on the friction coefficient, which varies considerably, the safety factor should be suitably raised, so that the minimal friction coefficient is still the margin of friction, such as an anti-skid device clamp. To improve the friction coefficient, the mouth contact surface rolls out the tooth surface and hardens the surface.
The anti-escape device cannot meet the job of wind pressure or non-working pressure of all-round security by itself; it must be used in conjunction with other devices to construct a complete anti-wind anti-skid system.
The design's strength for a variety of clamps, selection cases, the use of finite element stress analysis of the various components of 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 friction identification technique, the friction test, the brake, the clip rail clamp, and the friction wheel friction surface are all reliable friction coefficients.

Things needs your attention on gantry crane wind proof

1. Anchorage device should be installed in non-working conditions of anti-wind anti-skid requirements, the anchorage device should be able to independently bear the wind load of the Gantry crane non-working state, in addition to plug-type cable or other types of anchors fixed device.

2. The 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 the brake and release action should be able to be controlled remotely or automatically in the control room; wheel brake used to Gantry crane To prevent sudden hurricanes, the car breaks into motion and works with clamp clamps.

3. In the following situations, the mooring device must ensure that the Gantry crane and its related components are safe and reliable:

(A) When the Gantry crane is anchored and becomes non-operational.
(B) When the Gantry crane is in use and the Gantry crane is anchored and in normal operation.
(C) A wind load exceeds the limit wind speed of the operating state to be moored while the Gantry crane is in operation and in normal operation.

4. Reliable wind and anti-skid devices shall be put on the orbital Gantry crane's outdoor work, and the working state and non-working state anti-skid standards should be met.

5. The Gantry crane may not only install anti-wind braking devices without anchoring devices, but also wind-resistant braking devices that can endure the Gantry crane's wind load when it is not in use.

5. Clamping clamps are classified as active or passive (self-locking); active clamps are classified as manual or automatic; manually manual transmission of a human-driven screw to the clip rail link force is insufficient to cope with strong winds, and encountering an emergency state is insufficient; the passive clamp force, the greater the wind, the better the reliability of the active rail clamp than the automatic rail clamp.