Integral lifting scaffold force feedback anti-drop locking mechanism

Abstract

The invention discloses an overall hoisting scaffold force feedback type anti-dropping locking mechanism. A main shaft is sleeved outside a central rod; a spring is arranged between the central rod and the main shaft; a locking rotating wheel is sleeved on outer shaft sleeves of left and right swinging arms; outer teeth are arranged on the outer circumference of the main shaft; the outer teeth are meshed with inner teeth arranged on the inner cavity wall of the locking rotating wheel; the left and right swinging arms are connected with the main shaft; the left and right swinging arms can be driven to rotate when the main shaft rotates; transverse locking press blocks are arranged at the upper ends of the swinging arms; the locking press blocks are capable of pressing left and right guide channel steel; the locking rotating wheel is matched and connected with the main frame so as to limit the ascending and descending of the vertical main frame; the meshing state between the main shaft and the locking rotating wheel is cancelled through an unlocking device. The locking mechanism can automatically locks up when accidents happen no matter in static operation or hoisting operation, and the locking mechanism can immediately locks up within a very short time, so that a whole scaffold body can be immediately prevented from falling and can be stopped after sliding downwards for a very short distance, the security property is improved, and security accidents are prevented.

Description

technical field [0001] The invention relates to a safety structure of an integral lifting scaffold - an anti-falling locking mechanism, in particular to a force feedback type anti-falling locking mechanism of an integral lifting scaffold. Background technique [0002] In the field of construction, especially for medium and high-rise buildings, integral lifting scaffolds, referred to as climbing frames, are widely used in construction. As the external protection around the building, they are installed on the wall through the wall support, and the electric hoist drives it up or down , to carry out the external protection construction of the building, in the practical application of the climbing frame, there are the following two mainstream anti-drop locking methods. [0003] One is the form of the anti-fall ejector rod. When the climbing frame is running up and down, the anti-fall ejector rod is manually separated from the anti-fall teeth or the anti-fall rod, so that the cli...

AI Technical Summary

Problems solved by technology

[0003] One is the form of the anti-fall ejector rod. When the climbing frame is running up and down, the anti-fall ejector rod is manually separated from the anti-fall teeth or the anti-fall rod, so that the climbing frame can run up and down normally. When the climbing frame is in static operation, manual operation will The anti-fall ejector rod bears against the anti-fall teeth or the fall rod, and fixes the climbing frame around the building. If the electric hoist breaks or the electric hoist is not stressed during the descent of the climbing frame, the trigger device makes the anti-fall ejector rod Reset against the anti-fall teeth or drop rods to prevent the frame from falling. This method is reliable for anti-fall. The anti-fall distance is the distance between the anti-fall teeth or the drop rods, usually 80mm. The disadvantage is: when the anti-fall In the event of a hard impact, the impact force is large, and the position of the anti-drop ejector rod needs to be manually adjusted after each lift to lock the frame body

[0004] The other is the stalling and anti-falling method. When the climbing frame is raised and lowered within the set speed range, the anti-falling device will let it pass. Once the falling speed exceeds the designed speed, the anti-falling device will be mechanically stuck and stop moving. It is the principle of fixed inertial swing frequency, that is, when the falling speed exceeds the inertial swing speed, mechanical jamming occurs. The seat belt on the car uses this principle. The disadvantage is that the anti-fall distance of this method depends on the start of the fall. In the stroke of the trigger speed, the anti-fall distance is too long. It is said that the anti-fall distance is more than 200mm. If it falls at a slow speed, the anti-fall distance is longer. When the climbing frame is still working, other methods need to be used to lock the frame body, such as the ejector rod or plugs, etc.

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