277results about "Shaping building parts" patented technology

A slope adjustable head for an adjustable pedestal (10) for supporting beams, panel members, typically pavers, in accurate edge aligned relation, in a level plane is disclosed. The pedestal (10) includes a base block (12) and a series of inter-engaging threaded annular elements (20, 30) which can be rotated relative to each other to adjust the height of the top of the pedestal in a screw jack fashion. A slope compensator is located at the top of the pedestal and comprises a slope compensation plate (100) and a head member (50). The head member (50) defines a concave surface having a defined radius of curvature. The slope compensation plate (100) defines a corresponding convex surface having the same radius of curvature and sits on top of the head member. The pedestal (10) is calibrated to allow adjustment for typically zero to five percent in one percent increments. The top member defines a central aperture (56) and a series of holes (72) arranged in a spiral around the central aperture. The adjustment member defines a depending central cylindrical portion (110) which locates in the central aperture (56) and two diametrically opposed depending pegs (132, 134) spaced either side of the central cylindrical portion which locate in the holes of the top member. Rotation of the slope compensation plate (100) about its centre of curvature causes the angle of the adjustment plate relative to the vertical axis to change thus allowing for compensation for the slope of the surface on which the pedestal is standing.

A trench shield ladder that hangs on the wall of the trench shield to provide workmen safe access to a trench. The ladder is provided with a top platform and hand rails that extend over the platform. The ladder can be adjusted in length by employing an extension portion with hooks that hang the extension on the main rungs of the main ladder. The extension portion is not as wide as the main portion of the ladder so that the legs of the extension rest between the legs of the main portion of the ladder. The ladder and extension are provided with stand off arms that hold the main and extension rungs of the ladder away from the wall of the trench shield. The present invention is designed to fit on trench shields of varying thicknesses.

The present invention relates generally to a modular ramp (10) formed of prefabricated components. The modular ramp (10) includes a raked floor (12), elongate members in the form of floor pillars (14) and (15), and hand rails (16). The raked floor (12) is formed of a number prefabricated floor segments, an example of which are prefabricated floor panels (32) which extend between adjacent prefabricated floor bearers (34). The floor bearers (34) are supported by the floor pillars (14) and (15). The prefabricated floor bearers (34) have sleeves (56) and 58 attached at each end for respective receipt of the floor pillars (14) and (15). The pillars (14) and (15) are thus arranged for longitudinal movement relative to the sleeves such as (56) and locating pins (83) retain the pillars (14) or (15) relative to the sleeve (56).

Disclosed is a modular platform comprising a horizontal frame that is made of four angle irons and is devised and sized to receive and support a grid on which one or more persons can stand. Four supporting legs, each made of an angle iron, are respectively connected to the four corners of the frame, and extend below the same in order to maintain it at a distance from the ground. Reinforcing pieces are positioned below the frame and connected to the supporting legs for reinforcing the platform. The platform also comprises at least two thin holding bars extending horizontally between two opposite sides of the frame, in order to support the grid on the frame while preventing it from staying directly on the angle irons forming the frame. Each supporting leg has a lower end provided with a supporting foot that is adjustable in height, and has a lower end of a round shape to reduce the contact surface with the ground. The platform structure makes the platform very easy to clean.

A ramp where footboards are always smoothly and stably held in a horizontal position without being affected by soil, pebbles, and dust, and handrails can be held at a constant height. Footboard (3) are each horizontally supported at both ends between two gliders each composed of an upper chord member (1) and a lower chord member (2) that are arranged in parallel to each other. At either of the upper chord member (1) and the lower chord member (2), there is supported one end of an adjustment link for adjustably supporting the interval between the upper chord member (1) and the lower chord member (2), and at the other end, there is provided a position fixing member (9) for fixing the other end of the adjustment link at a predetermined position. Sockets (3A) for the handrails are installed in a vertical upright orientation, at side end surfaces of the footboards (3). Loosening prevention mechanisms for preventing loosening of supporting columns (23) of the handrails (22) are installed on the sockets (3A).

The invention discloses a hanging channel device for a foundation pit. The channel device comprises a concrete foundation platform arranged at the top of the foundation pit, a supporting frame fixed to the platform and a fast-mounted hanging ladder cage fixed to the supporting frame and going deeply into the foundation pit downwards. The fast-mounted hanging ladder cage comprises ladder cage standard sections and Z-shaped staircases, wherein the ladder cage standard sections and the Z-shaped staircases are spliced downwards layer by layer. Each ladder cage standard section comprises at least three ladder cage vertical rods and transverse braces fixed to the corresponding ladder cage vertical rods and defining a closed frame with the corresponding ladder cage vertical rods. The ladder cagevertical rods at the tops of the ladder cage standard sections are fixed to the supporting frame. The reset adjacent corresponding ladder cage vertical rods in the ladder cage standard sections are connected through connecting parts. Each Z-shaped staircase includes a resting platform arranged corresponding to each ladder cage standard section and a step fixed to the vertical adjacent resting platforms. Each resting platform is provided with a clamping groove and is arranged at the corresponding transverse brace of the corresponding ladder cage standard section to be fixed in a clamped mode. The hanging channel device is suitable for going up and down of workers under the condition of constant changing of the excavation depth in the excavation process, the site adaptability is high, assembly and disassembly are convenient and flexible, the structure is safe and reliable, and the hanging channel device can be repeatedly used.

A platform system comprising a platform structure having at least one modular platform unit with platform connection features on a side surface thereof to which other components can be connected, the other components including at least two of the following: another modular platform unit, a stair unit, a tower unit, a handrail unit, and a ladder unit. A stair assembly is connected to the platform structure via said connection features, the stair assembly comprising a plurality of stair units connected together to provide a number of steps equal to the sum of steps of the stair units.

A portable staircase for use at construction sites that comprises fold-down railings to facilitate transport from one construction site to the next. The portable staircase includes a plurality of horizontal treads supported by stringers. Handrails are provided which pivotally connect to the stringer utilizing a plurality of handrail support posts. A permanent pivot pin pivotally connects the handrail to each of the handrail support posts. Another permanent pivot pin pivotally connects each of the handrail support posts to the stringer. The handrail can be locked into one of two pre-selected positions: a first folded-down position to facilitate transportation and a second upright position for use at construction sites. Two removable pins may be employed to lock the handrail in position: a first removable pin to lock the handrail support post to the stringer and a second removable pin to lock the handrail support post to the handrail in the up and usable position.

The present invention relates to building engineering technology, and is especially one kind of deep foundation pit ramp structure. The deep foundation pit ramp structure consists of a deep foundation pit, a vertical enclosing structure around the deep foundation pit, a horizontal holding frame inside the enclosing structure, and a vertical holding frame fixed below the horizontal holding frame. Technologically, the present invention features that the enclosing structure is provided with one ramp door opening connecting one outer ramp outside the enclosing structure and one inner ramp inside the deep foundation pit. By means of combining the outer ramp and the inner ramp, the present invention makes it possible to construct long ramp in limited site. The deep foundation pit ramp structure facilitates the deep foundation pit construction.

The present invention is an easy to use device that attaches to a beam. The device may be used as a step for a user to stand on and attain elevation. The device may be used in combination to form a scaffold or a platform. The device is a tool having an upper surface with tapered ribs located on the back edge of the upper surface, a vertical member, and a collar. When the tool is placed around a beam and downward force applied to the tool, the ribs engage a first side of the beam and the collar engages the opposite side of the beam forming a lever. The tool is locked in place and the user is free to stand on it for support and elevation.

The cushion according to one embodiment is a deformable resilient apparatus with a surface for allowing various vehicles to transverse from a first surface to a second surface that are separated by an obstacle without damaging the obstacle. The cushion deforms to fit the space between the vehicle and the obstacle, thereby preventing concentration of stress on the obstacle. The cushion is constructed such that it does not slide out of place when engaged by tracks or wheels of a vehicle. The cushion is constructed to deform and distribute the force applied by the vehicle onto the object more uniformly.

A step mounting apparatus includes a stepping portion, at least one mounting support extending from the stepping portion, and at least one contact member attached to the at least one mounting support. The at least one contact member is adjustable with respect to the stepping portion such that an angle between the at least one contact member and the stepping portion can be varied.

The invention relates to scaffold steps, with two separate side pieces (11) and a plurality of separate step elements (13, 13′, 13″), which can be detachably coupled to each other and to the side pieces.

The invention discloses supertall building core tube construction safety fire protection system and device, comprising a construction elevator standard section and a core tube inner platform, wherein the construction elevator standard section is connected with a crawling ladder and is connected with a safety fire protection channel framework at the same side with the crawling ladder, the safety fire protection channel framework is fixedly connected to the core tube inner platform, the upper side, the lower side, the left side and the right side of the safety fire protection channel framework are provided with checkered steel plates in which fire-resistance plates are arranged, and the construction elevator standard section is connected with the safety fire protecton channel framework through an engaged channel. The invention effectively solves the technical problem of safety escape of constructors on a work layer when breaking out a fire during supertall building core tube construction and ensures the life safety of the constructors; meanwhile, the invention can realize the effective control on safety fire protection in the supertall building core tube construction, ensure the safety management of the supertall building core tube construction, and improve the safety management level and the integrated benefits of the supertall building core tube construction.

The invention belongs to the field of building technology, and particularly to a reinforced backfill earthwork ramp and a construction method thereof. A reinforced backfill earthwork ramp comprises a ramp and a protective structure, and the protective structure has multilayer repetitive structures. Each protective structure has backfill, an anchoring trench, earthwork cloth and earth bags. The earthwork cloth is laid in the anchoring trench, and the backfill presses on the earthwork cloth. The earth bags are arranged at one side of a side slope of a ramp, a portion of at the outside of the earthwork cloth is reserved, and the reserved portion reversely wraps the earth bags and then is pressed in the backfill, to form the protective structure. The construction method of the reinforced backfill earthwork ramp comprises back filling in layers, excavating the anchoring trenches, laying the earthwork cloth in the backfill in layers, arranging the earth bags at one side of a side slope of a ramp, reserving a portion of at the outside of the earthwork cloth, reversely wrapping the earth bags and pressing the reserved portion in the backfill to form the protective structure. By adopting the reinforced backfill earthwork ramp and the construction method thereof, the side slope of the ramp is good in stability, the side slope of the ramp can be ensured safe, and the reinforced backfill earthwork ramp is simple in construction and low in cost.

A walkway installation includes a walkway assembly which includes at least one tread module supported by a pair of spaced apart elongate supports which extend in the direction of the length of the walkway installation, the walkway installation additionally including a handrail assembly including a handrail which extends in the direction of the length of the walkway assembly and a plurality of spaced apart posts which each secure the handrail relative to the walkway assembly, the handrail assembly additionally including a first connector which secures a post to one side of the walkway assembly and the first connector having secured thereto a substantially inflexible transverse link which extends across the walkway assembly in a direction perpendicular to the length of the walkway installation, the transverse link extending to a second connector secured to the other side of the walkway.

The invention relates to a safe and practical tread board for realizing the simple and convenient disassembly and assembly of a temporary staircase in a construction site, comprising a tread steel board and steel tube rings, wherein the outer side of the tread steel board is turned downwards, the inner side of the tread steel board is turned upwards, and one steel tube ring used for penetrating in a tread steel tube is welded at each of the both sides of the back surface of the tread steel board respectively. The tread steel board is a steel board with patterns which are 3 mm thick, as well as is 900 mm long and 250 mm wide. The inner side and the outer side of the tread steel board are turned upwards by 30 mm and turned downwards by 30 mm respectively. The two steel tube rings on the back surface of the steel board have a diameter of 50 mm. According to the invention, the tread steel board which is convenient to disassemble and assemble is additionally arranged on the basis of the original temporary staircase which is erected by all-steel tubes, thus overcoming the defect that the original tread steel board composed of double steel tubes is bad in anti-slide force and extremely easy to cause safety accidents. Except the tread steel board, the whole temporary staircase structure can be formed by standard scaffold steel tubes and fasteners, and is simple and convenient to erect.

The invention discloses a slanting construction trestle combined with an internal supporting system of a foundation pit. The slanting construction trestle is arranged between an upper support and a lower support, and a trestle wharf is arranged in the middle of the lower support at the same time. The slanting construction trestle is combined with the internal supporting system, column piles are used for vertical supporting and horizontal supporting, and shear walls or trusses are arranged between the supports and the trestle to reinforce the integrity of the trestle and the supports. By means of the slanting construction trestle, a construction channel from the ground to the inside of the foundation pit is established, an earth cutting machine can directly descend into the pit for earth cutting construction and transportation operation without limitation of the cutting depth of the foundation pit, and therefore the earth cutting efficiency is improved to a great extent; since the slanting construction trestle is combined with the internal supporting system, the lateral stability of the trestle is improved; moreover, the column piles of the supporting system are used for supporting the trestle vertically and horizontally, a supporting beam is used as a frame beam of the trestle, and therefore a large amount of engineering cost can be saved.