RU235339U1 - Height adjustable foundation block - Google Patents

Abstract

The utility model relates to construction, namely to devices for creating foundations for buildings and structures. It can be used in the construction of low-rise and multi-story buildings, as well as in conditions of complex terrain or when it is necessary to regulate the height of the foundation. The reinforced concrete adjustable foundation block has a welded lower part of the metal frame and an upper part of the frame screwed into it, consisting of a threaded stud and an upper plate welded to it. A nut is welded coaxially to the hole at the lower plate, rods are welded to the four corners of the lower plate, which diverge at an angle coinciding with the ribs of the concrete block. The device ensures increased efficiency of pressure distribution due to the uniform pressure load of the building (structure) on the concrete through the metal frame.

Description

The utility model relates to construction, namely to devices for creating foundations for buildings and structures. It can be used in the construction of low-rise and multi-story buildings and other useful structures (platforms, terraces, gazebos, pergolas), as well as in conditions of complex terrain or when it is necessary to regulate the height of the foundation.

There are various types of foundation blocks used in construction. However, existing solutions often do not provide the ability to accurately adjust the height of the block after its installation. This creates difficulties when leveling the foundation, especially on uneven areas.

The closest analogue (prototype) is a foundation block consisting of a concrete base according to the patent document for utility model of the Russian Federation 219695, published 01.08.2023, which describes a device related to construction, in particular to foundation blocks of a building, structure or structures, to equipping the foundation for small-sized mobile structures and / or houses. Also applies to building structures that take the load from the structure and transfer it to the ground. They are used to tear buildings off the ground, prevent rotting of the lower part of the building. They are used for structures that require energy efficiency, i.e. the least heat loss during their operation and highly efficient outdoor air ventilation due to the placement of the structure (building) above the ground surface with an adjustable gap. The following can be considered as structures, including utility rooms, gazebos, frame houses and buildings for various purposes. Also, the convenience of using such blocks may be due to the impossibility of constructing structures on stationary foundations. A height-adjustable foundation block containing a bottom plate, a threaded post with a nut, the post is connected at one end to the top plate, which is made in the form of a platform, the free end of the threaded post is installed with the possibility of axial movement, and it is equipped with a fastener that fixes the position of the top plate relative to the bottom, and the bottom plate is made with a central hole. Additionally, a foundation block with a central hole is installed, in which the free end of the threaded post is placed, inserted into the bottom plate with a central hole, and on the threaded post, in addition to the nut, a washer is placed at the bottom.

The disadvantage of this solution is the unsuccessful design of the mechanism for adjusting the height of the block, which, firstly, limits its adjustment after the installation of the structure, and secondly, such a design in practice does not provide reliable fixation and at the same time adjustment of the threaded rack itself at the point of its entry into the concrete block. The structure itself will "walk", since it is not rigid enough (consists of many separate parts), accordingly, the block is subject to early deformation. And accordingly, such a design of the device is not a durable, practical and universal solution for various types of buildings and structures.

Unscrewing the rack to the maximum height position leads to an unreliable connection with the base of the block. In addition, there is no load distribution across the entire specific block. Such a load would allow for uniform distribution of the load from the upper point of contact of the structure with the upper plate across the entire block, which, accordingly, would allow the force of pressure to be distributed uniformly across the entire block, for example, in 4 directions, then across the block, along the stiffening ribs, across its entire plane onto the ground, slab, soil, sand, any surface.

Accordingly, the task of the utility model is, first of all, to achieve a good connection between metal and concrete when implementing such a device, which makes the frame as rigid as possible, and accordingly increases the operational properties of the reinforced concrete adjustable foundation block as a whole.

The technical result achieved by the utility model consists in increasing the efficiency of pressure distribution due to the uniform pressure load of the building (structure) on the concrete, through the metal frame.

The specified technical result is achieved in that the reinforced concrete adjustable foundation block has a welded lower part of the metal frame and an upper part of the frame screwed into it, consisting of a threaded stud and an upper plate welded to it, characterized in that a nut is welded coaxially to the hole at the lower plate, and rods are welded to the four corners of the lower plate, which diverge at an angle coinciding with the edges of the concrete block.

The device and the method of its assembly are explained in Fig. 1-3:

Fig. 1 – general view of the device;

Fig. 2 – upper metal part;

Fig. 3 – lower metal part.

Positions in Fig. 1-3:

1 – top plate;

2 – threaded stud (the thread itself is not shown);

3 – holes in the top plate (4 pcs.);

4 – bottom plate;

5 – nut;

6 – rods (4 pcs.);

7 – concrete block.

Thus, the reinforced concrete adjustable foundation block has a rigid and strong all-metal frame at its base. Which includes all the iron elements welded together into a single lower part (Fig. 3) and the second - a single upper part (Fig. 2). When the lower part is in concrete, the upper part is screwed into it by means of the nut 5 initially welded to the lower plate, which, due to the fact that it is welded to the lower plate 4, is a continuation of the lower plate 4 itself and, accordingly, takes pressure on the ribs of the concrete block together with the plate and four rods 6, which allows the pressure (pressure) to be distributed from the upper plate 1, welded to the threaded stud 2, to the lower plate 4 and nut 5, and, accordingly, the load to be evenly distributed over the four rods 6, which pass along the ribs of the concrete block 7. The ribs of the block are formed by means of a specific form for pouring concrete when pouring concrete.

The concrete block 7 itself is made by pouring concrete into a mold prepared for this purpose. The lower part of the frame (already a single welded element, Fig. 2) is placed in a specially prepared mold for pouring concrete to form the block. After pouring the concrete, the concrete is vibrated for better concrete placement and elimination of voids. To form an opening for the upper part of the frame when pouring liquid concrete, a specially selected insert or plug is used (the formation of such a channel for the threaded stud 2 is shown by dotted lines in the general drawing). Accordingly, an opening for the threaded stud is formed in the lower part. After the concrete has hardened, the mold and insert are removed to obtain a reinforced concrete structure into which the threaded stud 2 with the upper plate 1 is screwed.

Accordingly, when assembling a reinforced concrete adjustable foundation block, the upper plate is welded to a threaded stud, which is installed with the possibility of axial movement through the central hole in the concrete block, as it passes through a nut welded to the frame plate of the embedded part located in the concrete block and, accordingly, the height is adjusted. Rotating the upper plate 1 clockwise, the threaded stud 2 rotates simultaneously. This reduces the distance between the concrete block 7 and the upper plate 1. If you rotate the upper plate counterclockwise, the distance between the concrete block 7 and the upper plate 1 will increase, thereby achieving the maximum possible uniform distribution of the load on the concrete part of the device.

The production of such a device - a reinforced concrete adjustable foundation block, provides uniform loads on the hardened concrete itself and does not allow it to crack for a long time due to the uniform distribution of the load on the stiffening ribs. Accordingly, the contact surface of the concrete with the surface (slab, soil) is already uniform, even with height adjustment.

Claims (1)

A reinforced concrete adjustable foundation block having a concrete block, a welded lower part of a metal frame and an upper part of the frame screwed into it, consisting of a threaded stud and an upper plate welded to it, characterized in that the lower part of the metal frame is placed in the concrete block and is made in the form of a lower plate with an opening and a nut welded to it in the lower part coaxially with the opening, while rods are welded to the four corners of the lower plate, diverging at angles corresponding to the angles of inclination of the ribs of the concrete block, and in order to ensure the possibility of adjusting the height of the foundation block, the concrete block has a central vertical opening to ensure the possibility of moving the upper part of the frame in the form of a threaded stud during its axial movement.