Lifting rack random locking mechanism of truss pile leg platform

Abstract

The invention discloses a lifting rack random locking mechanism of a truss pile leg platform. A rack is arranged on a platform lifting pile; a pawl machine is arranged on the rack of the platform lifting pile; and a pawl shape is arranged at the front end of the pawl machine, and is engaged to the rack. The pawl machine is fixed on a pile area; a pawl pin shaft is arranged at the back end of the pawl machine; a hole is formed in a pin shaft main force board; and the pawl pin shaft penetrates through the hole of the main force plate. The mechanism mainly adopts the hinge type pawl machine, the stressed pile support, the random locking and the force hole control mechanism, and is mounted at the top of the platform pile area; the variable load of the platform vibration is increased or decreased; and the hinge type pawl machine can be firmly buckled on the rack, so that the working gesture tends to an ideal state, and the pile slip phenomenon generated by the platform can be thoroughly prevented. The mechanism needs no auxiliary driving power, is compact in structure, small in volume, convenient to operate and strong in practicability, and can improve the platform operation safety.

Description

technical field [0001] The invention relates to a random locking mechanism for a lifting rack of a truss leg platform, belonging to the field of marine engineering machinery. technical background [0002] At present, there are two types of platform rack-type lifting pile locking mechanisms used in the field of marine engineering: one is the gear self-locking type; the other is the rack external insertion type; both have many disadvantages; for example 1: gear Self-locking type, the rotation of the gear is generally driven by a motor, the rotation of the motor can drive the gear to rotate, the gear and the rack mesh together, when the gear moves up or down along the rack to stop, due to the gear and There is a self-locking function between the gears, which plays the role of locking and damping the platform down; disadvantage: when the platform enters the working state and the variable load of platform vibration increases or decreases, the self-locking mechanism of this transm...

AI Technical Summary

Problems solved by technology

[0002] At present, there are two types of platform rack-type lifting pile locking mechanisms used in the field of marine engineering: one is the gear self-locking type; the other is the rack external insertion type; both have many disadvantages; for example 1: gear Self-locking type, the rotation of the gear is generally driven by a motor, the rotation of the motor can drive the gear to rotate, the gear and the rack mesh together, when the gear moves up or down along the rack to stop, due to the gear and There is a self-locking function between the gears, which plays the role of locking and damping the platform down; disadvantage: when the platform enters the working state and the variable load of platform vibration increases or decreases, the self-locking mechanism of this transmission gearbox will produce From a small amount to gradually release the self-locking function, the gear will finally produce a slight to gradual rolling and sliding phenomenon, making the entire platform tilt slightly or severely, and even the platform collapses

For example 2: Rack external insertion type is to set up a hydraulic cylinder for rack external insertion locking under the gear drive. The hydraulic cylinder makes the convex arc surface of the same arc surface as the rack inserted into the concave arc surface of the rack, and the To lock and damp the sliding of the platform; Disadvantages: When the platform enters the working state and the variable load of platform vibration increases or decreases, the convex arc-shaped pin surface in the form of rack insertion will follow the concave surface of the rack. Slight or gradual sliding occurs on the arc surface. Due to the sliding of the concave and convex surfaces of this hydraulic pin, the hydraulic oil of the pin gradually returns to the overflow tank. When the convex surface of the pin slides out of the concave arc surface of the rack, the convex surface of the pin loses its locking function; Under the action of the variable load of platform vibration, the gear rotates and slides, causing the platform to tilt

Therefore, the above-mentioned two rack locking mechanisms currently used in the lifting racks of the truss legs of the offshore platform will cause the platform to slide when the vibration load of the platform increases or decreases, causing the platform to tilt slightly or severely, and even cause The aftermath of the entire platform collapsing, destroying

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