Corner roller cart for excavation support structures and methods for using same

1. A corner roller cart for facilitating the formation of a corner of an excavation support system, comprising:

a generally vertical back plate having a front surface, a back surface, a top end, and a bottom end;

a generally horizontal base plate having a top side and a bottom side, the base plate attached to the back plate at about a 90-degree angle, proximate the bottom end of the back plate;

at least one roller, connected to the back plate, extending from the back surface thereof;

a corner swivel brace disposed on the top side of the base plate and connected to the front surface of the back plate, the corner swivel brace comprising:

an adapter, wherein the adapter is configured to attach the corner swivel brace to the back plate of the corner cart;

a generally vertical axle support bar having a top end and a bottom end, wherein the axle support bar is connected to the adapter;

a generally vertical tube support having a top end and a bottom end;

a top plate having a first end and a second end, wherein the first end is disposed on the top end of the tube support, and the second end is generally perpendicular to and connected to the axle support bar;

wherein the axle support bar configured to swivel the support tube and the top plate relative to the vertical axis of the adapter;

a first side plate and a second side plate, wherein the side plates are generally L-shaped, having a generally vertical top portion, and a bottom portion that is generally perpendicular to the top portion, wherein the top portion of both side plates is attached to and generally perpendicular to the back surface of the back plate, wherein the bottom portion of both side plates is attached to and generally perpendicular to the bottom side of the base plate, and wherein the first side plate and the second side plate are generally parallel to one another; and

a first plurality of guide plates attached to, and generally perpendicular to, the generally vertical top portion of the first side plate, and a second plurality of guide plates that is attached to, and generally perpendicular to, the generally vertical top portion of the second side plate, and wherein the corner roller cart is movable in an upward and downward direction relative to a vertical axis.

2. The corner roller cart of claim 1 , wherein the corner roller cart is movable in an upward and downward direction relative to the vertical axis of a corner slide-rail post, wherein the corner slide-rail post is triangular shaped, forming the corner of the excavation support system, wherein the corner has an angle of at or about 90-degrees.

3. The corner roller cart of claim 2 , wherein the corner slide-rail post further comprises an extended faceplate disposed along the longitudinal axis thereof.

4. The corner roller cart of claim 3 , wherein the guide plates are configured to slide onto and secure to the extended faceplate of the corner slide-rail post, and wherein the guide plates are configured to facilitate slideable movement of the corner roller cart in an upward and downward direction relative to the vertical axis of the corner slide-rail post.

5. The corner roller cart of claim 1 , wherein the base plate is configured to support at least one brace leg.

6. The corner roller cart of claim 5 , wherein the corner swivel brace facilitates adjoining two brace legs at about a 90-degree angle on the base plate.

7. The corner roller cart of claim 5 , wherein the adapter configured is to be T-shaped.

8. The corner roller cart of claim 1 , wherein the support tube is a teardrop support tube.

9. The corner roller cart of claim 8 , wherein the bottom end of the tube support is disposed on and generally perpendicular to the bottom plate.

10. The corner roller cart of claim 1 , wherein the at least one roller is connected to a shaft, wherein the roller can rotate with the shaft.

11. The corner roller cart of claim 1 , wherein the at least one roller is connected to a shaft, wherein the roller can rotate around the shaft.

12. A corner roller cart system for facilitating the formation of a corner of an excavation support system, the corner roller cart system comprising:

a first corner roller cart and a second corner roller cart, each of the corner roller carts comprising:

a generally vertical back plate having a front surface, a back surface, a top end, and a bottom end;

a generally horizontal base plate, having a top side and a bottom side, attached to the back plate at about a 90-degree angle, proximate the bottom end of the back plate;

a first side plate and a second side plate, wherein both side plates are generally L-shaped, having a generally vertical top portion, and a bottom portion that is generally perpendicular to the top portion, wherein the top portion of both side plates is attached to and generally perpendicular to the back surface of the back plate, wherein the bottom portion of both side plates is attached to and generally perpendicular to the bottom side of the base plate, and wherein the first side plate and the second side plate are generally parallel to one another;

a first plurality of guide plates attached to, and generally perpendicular to the generally vertical top portion of the first side plate, and a second plurality of guide plates attached to, and generally perpendicular to the generally vertical top portion of the second side plate;

at least one roller connected to the back plate, extending from the back surface thereof; and

a corner swivel brace, disposed on the top side of the base plate and connected to the front surface of the back plate, comprising:

an adapter, wherein the adapter is configured to attach the corner swivel brace to the back plate of the corner cart;

a generally vertical axle support bar having a top end and a bottom end, wherein the axle support bar is connected to the adapter;

a generally vertical tube support having a top end and a bottom end;

a top plate having a first end and a second end, wherein the first end is disposed on the top end of the tube support, and the second end is generally perpendicular to and connected to the axle support bar;

wherein the axle support bar facilitates swivel movement of the support tube and the top plate relative to the vertical axis of the adapter; and

a linking tube configured to connect the first corner roller cart and the second corner roller cart when vertically aligned, wherein the linking tube has a top end and a bottom end, wherein the bottom end is positioned between the first side plate and the second side plate of the first corner roller cart, and wherein the top end is positioned between the first side plate and the second side plate of the second corner roller cart,

the corner roller cart system being moveable in an upward and a downward direction relative to a vertical axis.

13. The corner roller cart of claim 12 , wherein the corner roller cart system is movable in an upward and a downward direction relative to the vertical axis of a corner slide-rail post, and wherein the corner roller cart system is adapted to slide onto the corner slide-rail post and secure thereto.

14. The corner roller cart system of claim 12 , wherein the corner slide-rail post further comprises an extended faceplate disposed along the longitudinal axis thereof.

15. The corner roller cart system of claim 13 , wherein the plurality of guide plates of both corner roller carts are configured to slide onto and secure to the extended faceplate of the corner slide-rail post, and wherein the plurality of guide plates are configured to facilitate slideable movement of the corner roller cart system in an upward and a downward direction relative to the vertical axis of the corner slide-rail post.

16. The corner roller cart system of claim 12 , wherein the base plates of both corner roller carts are configured to support at least one brace leg.

17. The corner roller cart system of claim 16 , wherein the corner swivel brace of each corner roller cart facilitates adjoining two brace legs at about a 90-degree angle on the base plate of each corner roller cart.

18. A method of installing a corner roller cart in an excavation support system comprising:

disposing at least a first corner roller cart on a corner slide-rail post, wherein the corner roller cart comprises:

a generally vertical back plate having a front surface, a back surface, a top end, and a bottom end;

a generally horizontal base plate, having a top side and a bottom side, attached to the back plate at about a 90-degree angle, proximate the bottom end of the back plate;

a first side plate and a second side plate, wherein both side plates are generally L-shaped, having a generally vertical top portion, and a bottom portion that is generally perpendicular to the top portion, wherein the top portion of both side plates is attached to and generally perpendicular to the back surface of the back plate, wherein the bottom portion of both side plates is attached to and generally perpendicular to the bottom side of the base plate, and wherein the first side plate and the second side plate are generally parallel to one another;

a first plurality of guide plates attached to, and generally perpendicular to, the generally vertical top portion of the first side plate, and a second plurality of guide plates attached to, and generally perpendicular to, the generally vertical top portion of the second side plate;

at least one roller connected to the back plate, extending from the back surface thereof;

and a corner swivel brace, disposed on the top side of the base plate and connected to the front surface of the back plate, comprising: an adapter, wherein the adapter is configured to attach the corner swivel brace to the back plate of the corner cart; a generally vertical axle support bar having a top end and a bottom end, wherein the axle support bar is connected to the adapter;

a generally vertical tube support having a top end and a bottom end;

a top plate having a first end and a second end, wherein the first end is disposed on the top end of the tube support, and the second end is generally perpendicular to and connected to the axle support bar; and

wherein the axle support bar facilitates swivel movement of the support tube and the top plate relative to the vertical axis of the adapter;

the corner roller cart being movable in an upward and downward direction relative to a vertical axis.

19. The method of claim 18 , further comprising moving the corner roller cart in the downward direction relative to the vertical axis of the corner slide-rail post to a desired stopping position.

20. The method of claim 18 , further comprising connecting a linking tube to the first corner roller cart in vertical alignment therewith, the linking tube having a top end and a bottom end, wherein the bottom end is positioned between the first side plate and the second side plate of the first slide cart, and wherein the top end is positioned between the first side plate and the second side plate of the second corner roller cart.