Telescoping Portable Staircase for Drilling Rig Access
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Solution Overview
Problem
Current methods for accessing drilling rigs, such as using step ladders, are unstable and pose safety risks due to the increasing height of rigs and movement of drilling equipment, requiring longer ladders and increasing the risk of falls during ascent or descent.
Innovation Solution
A portable staircase with a telescoping assembly and hydraulic lift system that allows for independent support from the drilling rig, enabling safe and stable access by extending and adjusting the staircase length and angle, reducing the risk of the staircase sliding or falling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If step ladders are used to access drilling rigs, then the ability to access the rig is provided, but stability deteriorates as rig height increases and rig movement occurs
Solution Approach 1:
The staircase assembly incorporates a telescoping design with inner and outer staircase sections that can extend and retract. Hydraulic lift assemblies enable the staircase to dynamically adjust its length and angle, maintaining stability and accessibility as rig heights vary and as the rig moves during operation
Solution Approach 2:
Hydraulic lift assemblies are integrated to provide controlled extension and elevation of the staircase assembly. The hydraulic systems enable smooth, stable adjustment of the staircase length and angle, ensuring firm support for workers while accommodating changes in rig height and position
2Length of stationary object
If longer step ladders are used to reach higher rigs, then access to higher rigs is enabled, but the risk of falling increases during ascent or descent
Solution Approach 1:
Rather than using a single long static ladder, the system uses a telescoping design where the staircase extends in controlled sections. The inner staircase can extend beyond the outer staircase in a managed manner, reducing the risk of sudden failure or falling while providing the necessary length to reach higher rigs
Solution Approach 2:
The telescoping design with overlapping inner and outer staircase sections provides structural redundancy and gradual extension capability, cushioning against the risks associated with using a single long ladder by distributing the load and providing multiple support zones during extension
3Length of stationary object
If the staircase extends beyond the outer staircase, then access to higher positions is enabled, but the complexity of the telescoping mechanism increases
Solution Approach 1:
The inner staircase is nested within the outer staircase, with the inner staircase having a width less than the outer staircase to enable telescoping. This nested configuration allows the inner staircase to extend beyond the outer staircase when needed while maintaining a compact form when retracted, managing complexity through space-efficient design
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The portable staircase provides enhanced safety by maintaining stability and preventing unintentional movement, ensuring workers can access and exit the drilling rig safely, even as the rig moves, by being independently supported and adjustable in length and angle.
Implementation Method 1
a second hydraulic lift assembly configured to extend and raise the inner staircase from the outer staircase
Data Source
AI summary
The disclosure relates to portable staircases having a staircase assembly including an outer staircase and an inner staircase that can move in a telescoping relationship with respect to the outer staircase. Portable staircases of the disclosure are particularly useful for accessing an oil drilling rig as they are independently supported with respect to the drilling rig, thus providing numerous safety improvements and advantages. Methods of using the portable staircases of the disclosure are also disclosed.