Stair system for oilfield tank
A mobile storage tank includes a wall, a platform secured to the wall, and a structure that provides ascending access to the platform. The structure is configured to transition between a retracted position and an extended position.
1. A mobile storage tank, comprising:
a wall;
a conduit passing through the wall;
a platform secured to the wall and positioned above the conduit, the platform forming a continuous platform for use as a walkway;
a retractable platform extension operably associated with the platform, the retractable platform extension being configured to extend the continuous platform in a direction transverse to the wall such that the retractable platform extension provides walking access to a second platform of an adjacent second mobile storage tank;
wherein the retractable platform extension is removably secured to the second platform; and
an articulated structure operably associated with the platform; wherein the articulated structure provides ascending access to the platform; and
wherein the articulated structure transitions between a retracted position and an extended position.
2. The mobile storage tank of claim 1 , wherein the articulated structure is a staircase.
3. The mobile storage tank of claim 1 , wherein movable railing locks to the articulated structure.
4. The mobile storage tank of claim 1 , wherein the platform is removably secured to the wall.
5. The mobile storage tank of claim 1 , the articulated structure comprising:
a first section movably secured to the platform; and
a second section movably secured to the first section.
6. The mobile storage tank of claim 5 , wherein the second section pivotally couples to the first section.
7. The mobile storage tank of claim 5 , wherein the second section slidably engages with the first section.
8. The mobile storage tank of claim 1 , further comprising:
a movable railing.
9. The mobile storage tank of claim 8 , further comprising:
a guardrail rigidly attached to the platform;
wherein the moveable railing is movably attached to the guardrail.
10. The mobile storage tank of claim 9 , wherein the movable railing swings relative to the guardrail.
11. The mobile storage tank of claim 1 , further comprising:
a locking device for securing the articulated structure in the retracted position and in the extended position.
12. The mobile storage tank of claim 11 , the locking device comprising:
an elongated base member secured to the wall; and
a link pivotally coupled to the articulated structure and slidably engaged with the elongated member.
13. The mobile storage tank of claim 12 , the elongated base member comprising:
an elongated slot for receiving a pin associated with the hinge;
wherein the pin slides within the slot during transition between the retracted position and the extended position.
14. The mobile storage tank of claim 13 , the elongated slot comprising:
a locking section for receiving and securing the pin while the articulated structure is in the retracted position.
15. A mobile storage tank, comprising:
a wall;
a platform secured to the wall, the platform forming a continuous platform for use as a walkway;
a retractable platform extension operably associated with the platform, the retractable platform extension being configured to extend the continuous platform in a direction transverse to the wall such that the retractable platform extension provides walking access to a second platform of an adjacent second mobile storage tank;
wherein the retractable platform extension is removably secured to the second platform;
an articulated staircase, having:
a first section pivotally attached to the platform; and
a second section movably secured to the first section; and
a railing operably associated with the articulated staircase;
wherein the articulated staircase provides ascending access to the platform; and
wherein the articulated staircase transitions between a retracted position and an extended position.
16. The mobile storage tank of claim 15 , wherein the platform is removably secured to the wall.
17. A mobile storage tank, comprising:
a wall;
a conduit passing through the wall;
a platform secured to the wall and positioned above the conduit;
a retractable platform extension operably associated with the platform, the retractable platform extension being configured to extend the continuous platform in a direction transverse to the wall such that the retractable platform extension provides walking access to a second platform of an adjacent second mobile storage tank;
wherein the retractable platform extension is removably secured to the second platform;
an articulated structure, having:
a first section movably secured to the platform; and
a second section movably secured to the first section; and
a movable railing;
wherein the structure provides ascending access to the platform; and
wherein the structure and the railing are both manipulated between a retracted position and an extended position.
18. The mobile storage tank of claim 17 , further comprising:
a locking device for securing the articulated structure in the retracted position and in the extended position, the locking device having:
an elongated base member secured to the wall; and
a link pivotally coupled to the articulated structure and slidably engaged with the elongated member.