Processing

Please wait...

Settings

Settings

Goto Application

1. WO2020115460 - TRENCH SHORING APPARATUS AND ITS METHOD OF USE

Note: Text based on automatic Optical Character Recognition processes. Please use the PDF version for legal matters

[ EN ]

CLAIMS

1. A trench shoring apparatus, comprising:

first and second side panels connected in a parallel spaced-apart configuration by a connecting rod pivotally connected to one end of one or more pairs of lateral arms, the other opposite end of the one or more pairs of lateral arms being hingedly connected to the side panels, such that translational movement of the connecting rod in a direction parallel to the side panels causes the spaced-apart panels to move between retracted and extended parallel spaced-apart configurations.

2. The trench shoring apparatus as claimed in claim 1, wherein the first and second side panels are planar and each having an inner and outer surface.

3. The trench shoring apparatus as claimed in claims 1 or 2, wherein the outer surfaces of the first and second side panels abut with the excavated sides of the trench when in use.

4. The trench shoring apparatus as claimed in any of claims 1 to 3, wherein the inner surfaces of the first and second side panels are each connected to a plurality of elongate support members positioned from the top to the bottom of the side panels.

5. The trench shoring apparatus as claimed in claim 4, wherein the elongate support members are each secured to the inner surfaces of the first and second side panels using threaded fasteners which are received through apertures formed in the side panels and in the support members.

6. The trench shoring apparatus as claimed in any of the preceding claims, wherein the first and second panels are formed from a material selected from the group consisting, but not limited to, any one of the following: treated plywood, aluminum, sheet steel, durable plastics material and the like.

7. The trench shoring apparatus as claimed in any of the preceding claims, wherein the retracted configuration has a lateral dimension which is less than the width of the trench into which the apparatus is inserted when in use and which is less than the width of the extended configuration.

8. The trench shoring apparatus as claimed in claims 4 or 5, wherein the elongate support members form a fixed part of a hinge connection and having a generally square cross section with a pair of panels disposed either side thereof.

9. The trench shoring apparatus as claimed in claim 8, wherein the pairs of lateral arms form a moving part of the hinge connection, the pairs of lateral arms further comprising triangular upper and lower hinge plates disposed towards the top and near the middle respectively of the trench shoring apparatus.

10. The trench shoring apparatus as claimed in claim 9, wherein the upper and lower hinge plates are identical in size and shape.

11. The trench shoring apparatus as claimed in claim 10, wherein the upper hinge plate includes an elongated slot disposed along the top edge of the upper hinge plate, the slot securing a grille thereto using grille anchors.

12. The trench shoring apparatus as claimed in any of claims 9 to 11, wherein the upper and lower hinge plates each include a proximal aperture for receiving an elongate bar running the length of the side panels to permit pivotal movement of the upper and lower hinge plates relative to the support members.

13. The trench shoring apparatus as claimed in claim 12, wherein the pivotal movement of the upper and lower hinge plates being only possible in an upward direction as a side edge of the upper and lower hinge plates abuts against the inner surface of the side panels preventing movement in a downward direction.

14. The trench shoring apparatus as claimed in any of claims 9 to 13, wherein the upper and lower hinge plates are received in pairs along each side face of the support members.

15. The trench shoring apparatus as claimed in any of claims 9 to 14, wherein one or more connecting rods are disposed between the two pairs of upper and lower hinge plates.

16. The trench shoring apparatus as claimed in claim 15, wherein the connecting rods are elongate rods having apertures at each end thereof which meet with distal apertures disposed on the upper and lower hinge plates for receiving a top spacer bar and an elongate bar respectively.

17. The trench shoring apparatus as claimed in claim 11, further comprising two or more hoisting loops disposed along the top spacer bar, the hoisting loops being received within slots disposed in the pair of grilles.

18. The trench shoring apparatus as claimed in claim 17, wherein the pair of grilles are positioned either side of the top spacer bar.

19. The trench shoring apparatus as claimed in claim 8, further comprising a plurality of feet disposed at the bottom of the trench shoring apparatus and opposite to the upper facing grilles, each of the feet having legs which are received inside the cross section of each support member.

20. The trench shoring apparatus as claimed in claim 19, wherein the feet are adjustable in height using threaded fasteners which are received through apertures in the legs and corresponding apertures in the support members.

21. The trench shoring apparatus as claimed in any of the preceding claims, further comprising retrofittable extension boards or shims being placed on the outer surfaces of the side plates to further extend the lateral dimensions of the apparatus.

22. The trench shoring apparatus as claimed in claim 9, further comprising rollers or other support means being positioned on the top edge of the lower hinge plate to support utilities or temporary pipework running through the trench when in use.

23. The trench shoring apparatus as claimed in claim 9, wherein the lateral arms each further comprise complementary shaped elongate adjustable struts disposed towards the top and near the middle of the trench shoring apparatus.

24. The trench shoring apparatus as claimed in claim 24, wherein the adjustable struts are each formed having a box-section construction.

25. The trench shoring apparatus as claimed in claims 23 or 24, wherein the complementary shaped elongate adjustable struts comprise an inner strut which can be entirely received within the body of an outer strut.

26. The trench shoring apparatus as claimed in claim 25, wherein the adjustable strut being telescopically extendable and retractable, and locked in position by locating an adjustment pin in one of a plurality of apertures which are formed in the inner and outer struts.

27. The trench shoring apparatus as claimed in claims 25 or 26, wherein the proximal end of the outer strut includes a proximal aperture for receiving a pin that is disposed between each side face of the backplate to permit pivotal movement of the adjustable strut.

28. The trench shoring apparatus as claimed in any of claims 25 to 27, wherein the proximal end of the inner strut includes a proximal aperture for receiving a pin that is pivotally connected to the connecting rod.

29. The trench shoring apparatus as claimed in any of claims 25 to 28, wherein the pivotal movement of the adjustable struts being only possible in an upward direction as the lowermost face of the the outer strut abuts against a stopper plate preventing movement in a downward direction.

30. The trench shoring apparatus as claimed in any of claims 23 to 29, wherein the connecting rod is disposed between the two pairs of adjustable struts.

31. The trench shoring apparatus as claimed in claim 6, wherein the durable plastics material comprises Polypropylene (PP), High-Density Polyethylene (HDPE), Polyethylene Terephthalate (PET), Polyvinyl Chloride (PVC) or Acrylonitrile Butadiene Styrene (ABS) or blends thereof.

32. The trench shoring apparatus as claimed in any of the preceding claims, further comprising connectors which meet with appropriate fasteners on groundmats and the like.

33. The trench shoring apparatus as claimed in any of the preceding claims, wherein the metalwork components forming the apparatus are selected from a material from the group consisting, but not limited to, any one of the following: mild, powder-coated or galvanised steel, or aluminium and the like.

34. A method of supporting the side walls of an excavated trench using the trench shoring apparatus as claimed in any of claims 1 to 33, the method comprising the steps of:

coupling a sling adjacent the connecting rod of the trench shoring apparatus; hoisting the apparatus thereby causing the spaced-apart panels to move to the retracted spaced-apart configuration;

lowering the retracted apparatus into the excavated trench; and

pushing the connecting rod downwards such that the side panels splay apart into the extended spaced-apart configuration to abut against the side walls of the excavated trench.