RU2115787C1 - Cradle for construction and erection operations - Google Patents

Abstract

FIELD: construction machinery and equipment. SUBSTANCE: cradle has cramp-like frames. Made on end faces of upper flanges of frames are L-shape grips, and made on end faces of lower flanges of frames are stops. Base of cradle is located on lower flanges of frames. Attached to upper flanges of frames are mounting loops which are displaced from center of gravity of cradle in direction of grips. Aforesaid embodiment ensures efficient and safety operation of cradle and widens its functioning potentialities. EFFECT: higher efficiency. 2 cl, 1 dwg

Description

 The invention relates to the field of construction and can be used for installation and construction works, in particular, on the facades of buildings.

 Known mounting pad for mounting columns of the frame, including the frame, flooring, fixture for mounting the site, the hinged beam and mounting screws [1].

 Closest to the invention, the technical solution (prototype) is a cradle for construction and installation works, including frames with L-shaped grips in the upper part, base and railing [2].

 A significant drawback of the known solution is the location of the center of gravity of the cradle between its supporting parts, which allows the cradle to be hung only at the incoming corners of the structures and does not allow its suspension on flat walls, as well as the insecurity of safe work.

 The aim of the invention is to expand the capabilities of the cradle, ensuring safe operation, as well as the implementation of lifting goods on the cradle without crane equipment.

 The essence of the invention lies in the fact that in the cradle for construction and installation works, including frames with L-shaped grippers in the upper part, the base and railing, the frames are stapled in shape, at the ends of the upper shelves of which are made L-shaped grips with stops, and stops are made at the ends of the shelves, protruding beyond the edge of the base located on the lower shelves, while the frames are equipped with lifting loops attached to the upper shelves with an offset from the cradle's center of gravity in the direction from the grips.

 The cradle can be multi-tiered with several bases and a visor, and can also be equipped with a hatch at the base and a winch.

 Compared with the prototype [2], the invention contains new features, namely that the frames are staple-shaped, at the ends of the upper shelves of which are made L-shaped grips with stops, and at the ends of the lower shelves made stops protruding beyond the edge of the base located on lower shelves, while the frames are equipped with lifting loops attached to the upper shelves offset from the cradle's center of gravity in the direction from the grips.

 The cradle can be multi-tiered with several bases and a visor and can be equipped with a hatch at the base and a winch.

 The drawing shows a cradle, a General view, a perspective view.

 The cradle includes staple frames 1, on the ends of the upper shelves 2 of which L-shaped grips 3 are made with stops 4, and on the ends of the lower shelves 5 stops 6 are made.

 The base 7 is attached to the lower shelves 5, and the lifting loops 8 are attached to the upper shelves 2, which are offset from the cradle's center of gravity in the direction from the grippers 3.

 The cradle can be equipped with a protective visor 9, have a hatch 10 in the base 7, a winch 11 and a block 12, as well as a railing 13.

 The specific shape of the bracket-shaped frames 1, for example [-shaped, rectangular (variant shown in the drawing) and their number are determined in a particular design, depending, for example, on the shape of the building in plan and section. The cradle can also be multi-tiered (not shown in the drawing), i.e. on several floors of the building.

 The cradle is hung on the building structure by winding the L-shaped grippers 3 at the end of the wall or by introducing them into the holes in the finished wall, followed by releasing the lifting loops 8 from the hooks of the lifting device by resting the stops 6 on the wall surface.

 The work of the cradle is ensured by the fact that the external bending moment from the payloads and dead weight of the cradle is perceived by a pair of horizontal forces in the upper and lower parts of the frames 1, and the vertical load by the grippers 3 in its upper part.

 The offset of the lifting loops 8 from the center of gravity of the cradle to the side external from the grippers 3 ensures that the lower part of the cradle moves away from the surface when it is hung or removed, without jamming the cradle in the supporting structures.

 With the help of the cradle it is possible to lay brick walls, the device for wall cladding and their sealing without releasing fasteners from the wall, which must be removed or decorated after removing the cradles and which in some cases are unacceptable for aesthetic and operational reasons. In addition, the cradle allows you to not leave nests in the wall, which must be repaired after removing it.

 Considering the possibility of conducting work at several levels, for example, laying monolithic reinforced concrete in the upper part of a building under construction and installing insulation and cladding at lower levels, the safe conduct of work is of particular importance, i.e. protection of working on the cradle from falling objects from the upper levels, for which a protective visor 9 is provided.

 Due to the fact that the construction economy requires the maximum use of crane time, it is advisable not to use a crane to carry out cladding work, but to lift loads onto the cradle using a winch 11 and block 12 mounted on the cradle, using the crane to the maximum extent possible for the construction of load-bearing structures building. In this case, the crane is used only to move the cradles to the next horizon.

 Varying the shape of the frames and base, it is possible to use cradles on buildings of complex shape in plan and section.

 The cradle design allows you to replace scaffolding, traditionally used for such purposes. At the same time, scaffolding fasteners that need to be cut, decoded, and protected against corrosion from suspended cradles are excluded. In addition, unlike scaffolding, the cradles allow window filling in the process of insulation and wall cladding.

 Thus, the invention significantly increases the efficiency and safety of construction and installation works.

Claims (3)

 1. A cradle for construction and installation works, including frames with L-shaped grippers in the upper part, a base and a railing, characterized in that the frames are staple-shaped and L-shaped grips with stops are made at the ends of their upper shelves, and at the ends lower shelves - stops protruding beyond the edge of the base located on the lower shelves, while the frames are equipped with lifting loops attached to the upper shelves offset from the cradle's center of gravity in the direction from the grips.  2. The cradle according to claim 1, characterized in that it is multi-tiered with several bases and a visor.  3. The cradle according to claim 1, characterized in that it is equipped with a hatch at the base and a winch.