Abstract

The method is used for strutting brace legs in a quadrangular setup of a rim of brace legs. The method consists in that a spreader (3) is attached to one end of each brace leg (2), while an extendable tensioning unit (4) is attached to the other end of the same brace leg (2). Next, the brace legs (2) are set inside the excavation in such a manner that, in the excavation corners, the ends of the brace legs (2) terminated with spreaders (3) become coupled with the ends of the subsequent brace legs (2) terminated with tensioning units. Once all the brace legs (2) have been coupled with each other, the ends of the brace legs (2), with the spreaders (3) attached to them, are pressed against the sheet piles (1) in the excavation corners by means of tensioning units (4) attached to subsequent brace legs (2).

IPC Classes  ?

• E02D 17/08 - Bordering or stiffening the sides of ditches or narrow shafts for foundations
• E02D 17/04 - Bordering or stiffening the sides of foundation pits

Abstract

The method is used for strutting brace legs in a quadrangular setup of a rim of brace legs. The method consists in that a spreader (3) is attached to one end of each brace leg (2), while an extendable tensioning unit (4) is attached to the other end of the same brace leg (2). Next, the brace legs (2) are set inside the excavation in such a manner that, in the excavation corners, the ends of the brace legs (2) terminated with spreaders (3) become coupled with the ends of the subsequent brace legs (2) terminated with tensioning units. Once all the brace legs (2) have been coupled with each other, the ends of the brace legs (2), with the spreaders (3) attached to them, are pressed against the sheet piles (1) in the excavation corners by means of tensioning units (4) attached to subsequent brace legs (2). In the setup according to the invention, the spreader (3) is attached to one end of each brace leg (2) forming a rim of brace legs supporting the excavation sheet piles (1), while the tensioning unit (4) is attached to the other end of the same brace leg (2). The tensioning unit (4) comprises an l-section (41) to which an axially arranged lug (42) is mounted at one end, and a retaining block (43) is rigidly mounted on the opposite side. Between the axially arranged lug (42) and the retaining block (43), there is a sliding panel (5) composed of a base plate (51), protruding beyond the l-section (41) outline, spacing plates (52) and limiting plates (53), which altogether embrace the l-section (41) flanges. Welded to the base plate (51), there is a transverse retaining element (55) and two lateral lugs (57). There is also a block hole (44) and a tensioning hole (56), both penetrated by a tensioning stud (7). In each corner of the rim of brace legs (2), the spreader (3) attached to the brace leg (2) of the first pair of brace legs is coupled with the tensioning unit (4) of the brace leg (2) comprising the second pair of brace legs by means of pins (8).

IPC Classes  ?

• E02D 17/08 - Bordering or stiffening the sides of ditches or narrow shafts for foundations
• E02D 17/04 - Bordering or stiffening the sides of foundation pits

Abstract

The adapter has been designed for connecting strutting structure elements intended for excavation shoring applications by means of standard stock pipes. It comprises a rigid plate (1) featuring a row of straight-through connecting holes (2) centrically arranged along its perimeter and a straight-through tightening hole (3) situated at the centre as well as a pair of sliding horizontal centring pieces (4) and a pair of preferably protruding sliding vertical centring pieces (5), the latter positioned perpendicularly to the plate. The horizontal centring pieces (4) and the vertical centring pieces (5) feature oblong slots (6) penetrated by pairs of mounting screws (7). In the upper section of the shape, the plate (1) features a central lifting eye (8) positioned in the middle of the plate (1) and, on both its sides, two smaller technical protrusions (9a) and (9b), while in the bottom section, the plate (1) has a rectangular supporting protrusion (10).

IPC Classes  ?

• E02D 17/08 - Bordering or stiffening the sides of ditches or narrow shafts for foundations
• E02D 17/04 - Bordering or stiffening the sides of foundation pits
• E04G 17/14 - Bracing or strutting arrangements for formwallsDevices for aligning forms

Abstract

The method for strutting and relieving struts of brace legs in an excavation support system consists in that at least one non-permanent support point is formed for the strut placed between the brace legs, whose positioning on the brace leg is controlled by means of an adjustable anchoring piece catching on another support point on the same brace leg. The force component produced by the strut's thrust, affecting the brace leg, is controlled by adjusting the anchoring piece's tensioning force. The force component is relieved by breaking the anchoring piece's continuity. In the system for strutting and relieving of struts, on the surface of each of the pair of intercoupled corner brace legs (11), supporting corner retaining walls (12) of the excavation, a retaining element (13) and, at a certain distance from it, a corner lug (15) are installed. The retaining element (13) and the corner lug (15) are coupled by means of corner anchoring pieces (16) terminated with corner working nuts (17) on both sides. Both corner lugs (15) are connected with each other with a comer strut (19). Corner induction winding (18) is coiled about the corner anchoring pieces (16). In the invention variation, on the outer surface of each of two coupled side brace legs (21), supporting side retaining walls (22), at a certain distance from each other, there are two side lugs (23). The lugs are intercoupled by means of side anchoring pieces (24) terminated with side working nuts (25) on both sides. Spreading struts (26), whose other ends are connected with the main strut (27), are attached to both side lugs (23). Side induction winding (28) is coiled about the side anchoring pieces (24).

IPC Classes  ?

• E02D 17/08 - Bordering or stiffening the sides of ditches or narrow shafts for foundations

Abstract

The subject of the invention is intended for various technical operations where it is required that heavy objects can be moved in a slow and smooth manner to relatively large heights or relatively long distances. The device features a housing (1), limited with a cover (2) from one side and with a base (4) from the other side, featuring a partition (6) inside it. There is a working screw (8) of the length larger than that of the housing (1) inserted through the cover penetration (3), the partition penetration (7) and the base penetration (5). Two supporting elements are mounted to the housing (1) wall, one being the first supporting bracket (9) and the other being the second supporting bracket (10). Mounted on the first supporting bracket (9) is the first hydraulic cylinder (11) featuring a hollow piston rod (12) with a section of the working screw (8) being inserted through its center. Analogically, mounted on the second supporting bracket (10) is the second hydraulic cylinder (13) with a hollow piston rod (14) with another section of the working screw (8) being inserted through its center. The first working nut (15) and the second working nut (16) are screwed on the working screw (8), and mounted on their perimeters are, respectively, the toothed ring (15b) meshed with the first pinion (17) and the toothed ring (16b) meshed with the second pinion (19). Both pinions (17) and (19) are correspondingly meshed with two control motors (18) and (20).

IPC Classes  ?

• B66F 3/08 - Devices, e.g. jacks, adapted for uninterrupted lifting of loads screw-operated
• B66F 3/24 - Devices, e.g. jacks, adapted for uninterrupted lifting of loads fluid-pressure operated

Abstract

The jack is intended for lifting and supporting, particularly of heavy structural elements, as well as for strutting of excavation brace legs and struts. The jack features an oblong load-bearing frame (2) mounted to the frame base (1) with a lifting bushing (5) inside the frame along with a working screw (6) slid inside the former, where at the free end of the screw, a supporting disk (8) is mounted. The lifting bushing (5) is supported on a piston rod (9) of a hydraulic cylinder (11) installed inside the frame base (1) box (10). The working screw (6) section which remains outside the load-bearing frame (2) features an upper nut (13), whereas inside the load-bearing frame (2), there is a lower nut (14) on the working screw (6), The upper nut (13) features an outer toothed locking ring (15), whereas the lower nut (14) features an outer toothed lifting ring (16). The toothed locking ring (15) is meshed with an locking (17) coupled by means of an locking driving axle (18) with an locking driving motor (19) installed inside the box (10). The toothed lifting ring (16) is meshed with a lifting pinion (20) coupled by means of a lifting driving axle (21) with an lifting driving motor (22) installed inside the box (10).

IPC Classes  ?

• B66F 3/08 - Devices, e.g. jacks, adapted for uninterrupted lifting of loads screw-operated
• B66F 3/24 - Devices, e.g. jacks, adapted for uninterrupted lifting of loads fluid-pressure operated