RU47410U1 - SYSTEM FOR FLOORING ESTABLISHMENT OF THE EXTERNAL WALL OF THE BUILDING FROM MONOLITHIC REINFORCED CONCRETE AND SYSTEM HINGED SITE - Google Patents

Abstract

A system for floor-by-floor erection of an external wall of a building made of reinforced concrete, in which the formwork contains tie rods for mutual fixation of the panels, removed from the finished wall, the system contains a hinged platform for supporting the shield, which has at least one deck fixed to the frame and grips, hinged the platform contains bolts for engaging the grippers made with the possibility of passing into the through holes in the wall, remaining after removing the tie rods, the bolt is made so that, being inserted from one side of the wall into the well heat of the wall opening, can be fixed, as well as released and pushed back out of the through hole on the side opposite the one with which introduced. The hinged platform contains grips and nodes for engaging the grippers, the grips have movable locks that can be installed in the closed and open positions, the hinged platform contains levers, a lifting eye is made at one end of each arm to engage the slings of the lifting device, the levers are mounted on the axles with the possibility of rotation them in the raised position, which they occupy under load, and in the lowered position, when the levers are free of load, each capture contains a kinematic connection of the latch with the lever m, providing a closed position when the latch lever lowered position and an open position when the latch lever raised position.

Description

This technical solution relates to the field of construction of reinforced concrete, and in particular, to methods and equipment for the floor construction of external walls of buildings.

The technology of construction of reinforced concrete is currently recognized as the most progressive and economical. It is based on the principle of manufacturing concrete structures of an erected object directly at the place of their design location. Formwork plays the main role in this technology, since the pace and cost of construction directly depend on the simplicity and speed of its installation and dismantling. The established practice is the sale or rental of formwork by specialized firms to construction organizations. The most famous are such international companies as Doka (Doka), PERI (PERI), MEBA (MEVA), Aluma Systems (Aluma Systems).

The techniques and equipment used in the construction of the external walls of the building, unlike the internal walls, have features caused by the location of these walls. The support for wall formwork during the construction of the next floor can be an interfloor overlap, but in the case of an external wall of a building, such natural support is only on one side.

The task of securing the formwork shield on the outer side of the external wall of the building under construction is solved by the Doka, PERI, PERI, MEBA (MEVA) companies using hanging platforms that provide support for the outer shield. The design of most of the hanging platforms known from the brochures of these companies is almost the same.

Figure 1 shows the hinged platform 1, used in the formwork system of the company "Doka" during the floor construction of the external walls of buildings using the technology of monolithic construction. This

the hinged platform is the closest to the real technical solution of the hinged platform.

The hinged platform 1 is made two-level, and contains the upper part with the upper deck 2, on which the outer formwork shield is installed, and the auxiliary lower deck 3 on the lower part of the hinged platform, detachably connected to the upper to adjust the distance between decks 2 and 3. The hinged platform 1 is installed from the outside of the finished part of the wall 4 using the anchor elements provided for it 5. The anchor elements 5 are fixed in predetermined places from the inside of the front cover 6 of the formwork shield, as shown in FIG. 2, so that they were in the body of the concrete during the concreting of the wall of the next floor. Further, for concreting the wall of the next floor, in the anchor elements 5, thus fixed in the finished wall of the next floor, the screws 7 are screwed (Fig. 3), on which the hinged platform 1 is installed. For fastening on the bolts 7, the hinged platform 1 is equipped with grippers 8 (Figure 4), made in the form of forks, dressing on top of the bolt heads 7. The hinged platform, when it is mounted on the wall, is subject to wind loads. For reliable fastening of the hinged platform 1, the grippers 8 are equipped with clamps 9. The clamps 9 are made in the form of bolts, which, after engaging the forks of the grippers 8 over the heads of the bolts 7, are pushed into the grippers 8 along the planes of the forks. In this position, the latches 8 prevent the claws 8 from coming out of engagement with the bolts 7.

The pad 1 is moved using a lifting device. To engage the slings of the lifting device, rigidly fixed lifting eyes (not shown) are made at the four corners of the hinged platform.

With each new floor, the landing pad 1 is reinstalled on the floor above. The bolts 7 protruding from the wall of the previous floor are removed, for this the installer descends from the upper deck 2 to the lower deck 3, the distance between which slightly exceeds

the height of the floor (Figure 1) and unscrews the bolts 7 from the anchor elements 5, which themselves cannot be removed.

The described hinged platform has several disadvantages. The fastening of the anchor elements on the outer formwork panels requires considerable accuracy during this work, since the distance between the anchor elements must correspond to the distance between the grippers, which are rigidly fixed on the hinged platform. The two-level hinged platform is cumbersome, in addition, in many of them the design is complicated by the fact that a hatch is arranged in the upper deck to facilitate the transition of the installer to the lower deck. If there is no hatch, the fitter's transition from the upper to the lower deck is fraught with great danger. In addition, the removal of bolts from the wall is associated with lengthy work on the hinged area on the outside of the wall of the building, that is, work in conditions of increased danger. Further, manual control of the gripper clamps in working conditions at altitude and often under adverse climatic conditions (frost, rain) increases the likelihood of emergencies due to non-compliance with technological rules, in particular, if the grippers forgot to fix, or neglected this. Finally, the anchor elements left in the wall of each floor increase the cost of construction.

Closest to the present technical solution is a system for floor-by-floor erection of the external wall of the building, used by Aluma Systems.

The task of securing the formwork shield on the outer side of the outer wall of the building under construction is solved, as shown in Figure 5. In the Aluma Systems formwork system, lightweight shields 11 are used. To avoid deformation under the weight of the concrete mortar, the panels 11 are fixed at a distance equal to the wall thickness using the tie rods 12, passed through the holes corresponding to each other, made in the panels 11 in rows with a given step along the width and height of the panels 11. During the dismantling of the formwork after hardening concrete mortar tie rods

12 is removed from the finished wall. In the Aluma Systems system, for the construction of the outer wall of the building, instead of a hinged platform for supporting the outer formwork shield, an increased height shield 13 is used, which is fastened in the lower part with pins 14 to the finished wall 15 of the previous floor through the through holes remaining in it 16. The shield 13 contains the upper platform 17 and the lower platform 18, used to unscrew the nuts 19 of the tie rods from the outside.

This technical solution has basically the same drawbacks, namely, the need to use sites at two levels and the considerable laboriousness of work from the outside of the building wall in conditions of increased danger. In addition, specialized panels 13 of increased height are suitable only for use on the outside of the external wall, and cannot be used in the construction of, for example, walls inside a building.

The basis of this technical solution is the task of creating a system for floor-by-floor erection of the building’s external wall from reinforced concrete, as well as a hinged platform that would reduce the complexity of the work performed by the installer on the outside of the external wall, increase the safety of work and, at the same time, achieve cheaper system.

The problem is solved in that in the system for floor-by-floor construction of the external wall of the building from reinforced concrete, including a formwork containing two boards for pouring concrete mortar between them to the height of the boards during the construction of the wall of the next floor, the formwork contains tie rods, and the panels are reciprocal holes located in rows with a given step along the width of the shield for passing through the tie rods and mutual fixation of the shields with tie rods at a distance equal to the thickness of the wall being constructed the slats are made removable from the finished wall after the concrete mortar has hardened, according to this

the technical solution, the system comprises a hinged platform for supporting the shield, the hinged platform, includes a housing comprising a frame, at least one deck fixed to the frame and at least two grips fixed to the frame at a distance multiple of the pitch of the holes in a row along the width of the shield, the hinged platform further comprises bolts for engaging the grippers, made with the possibility of passing through the holes in the wall remaining after removing the studs, each bolt contains means for fixing the bolt in the wall, the bolt is made ak that being introduced from one side wall of the through hole in the wall, may be fixed, as well as released and pushed back out of the through hole on the side opposite that from which introduced.

The implementation of the bolts for installing the hinged platform with the possibility of fixing, and then releasing and removing from the wall from the side opposite to the one from which the bolts are inserted into the through holes in the wall, allows these works to be performed from the inside of the wall, from the inside of the building, and therefore reduces the volume work performed in conditions of increased danger from the outside of the external wall of the building.

It is advisable that the hinged platform was made single-level, containing one deck.

The installation of the hinged platform on the bolts, which after the erection of the wall of the next floor can be released and removed from the wall on the inner side of the wall, eliminates the need to go down to carry out these works from the outer side of the wall to the level of the previous installation of the hinged platform and this makes it possible to use a single-level hinged platform, more cheap compared to the well-known two-level.

It is advisable that the hinged platform contains bolts for engaging the grippers in an amount twice as large as the number of grippers and cables connecting each bolt to the housing so that

the places where the cables were fixed on the hull were accessible to the installer from the deck of the outboard platform.

The problem is also solved by the fact that in the hinged platform for supporting the formwork shield, containing a frame and means for its installation on the wall of the building in a predetermined position, the tool includes a device mounted on the frame for engaging the slings of an external lifting device, at least two fixed on the grip frame and nodes for engaging the grippers, made with the possibility of fastening in the wall and engaging for them grippers, when the nodes are fixed in the wall, and at least two grippers each are movably m latch, made with the possibility of installation in a closed position, in which, when the grip is engaged with the specified node, the latch prevents them from disconnecting, and in the open position, providing the possibility of meshing and disconnecting the grip with the specified node, according to this technical solution, a device for hooking of the sling contains axes fixed on the frame, and levers mounted one on each axis, a lifting eye is made at one end of each arm to engage the lifting slings On the device, the levers are mounted on the axles with the possibility of turning them into the raised position, which they occupy under load, when the hinged platform hangs on the slings of the lifting device, hooked to the lifting eyes in the levers, and in the lowered position, when the levers are free of load, each grip containing a latch, contains a kinematic connection of the latch with the lever, providing a closed position of the latch that with the lowered position of the levers and an open position of the latch with the raised position of the levers.

The uncoupling of the slings after installing the hinged platform is associated with the execution of actions with levers, so the levers remaining in the raised position, practically can not go unnoticed. The lowered position of the levers provides

fixing of captures of the hinged platform, and therefore, the safety of work on the hinged platform.

In a preferred embodiment, the means for installing the hinged area on the wall of the building comprises two gripping clamps, each of which is connected to the clamps of the levers connected to one clamp. In this case, it is advisable that the kinematic connection of the latch with the lever contains a rod, the ends of which are pivotally connected, respectively, with the latch and the lever.

Further, it is advisable that the node for engaging the gripper contains a bolt having a head at one end, and each gripper contains a fork, an annular groove is made in the head of the bolt for the passage of the fork in it, and the gripper containing the retainer contains an axis of the retainer fixed to the fork, on which the latch is mounted to rotate between the open and closed position, and so that the latch contains a tooth, which in the closed position of the latch blocks the mouth of the fork.

In a preferred embodiment, the levers of the device for engaging the slings are configured to accept, in the absence of load, a lowered position under the influence of its own weight when the hinged platform is mounted on the wall of the building in a predetermined position. This frees the installer from the need to remember about the fixation of the grippers, which in such an implementation is carried out automatically.

Further, the present technical solution will be considered in detail on the examples of the preferred implementation with reference to the drawings, in which:

Figure 1 depicts a side view of a curtain pad of the prior art installed on the outer side of the outer wall of the building being constructed;

Figure 2 - 4 depict the elements of the means for installing the hinged pad of the prior art;

Figure 5 illustrates another system of floor construction of the outer wall of the building of the prior art;

6 depicts a side view of the body of the hinged platform system, made in accordance with this technical solution;

Fig.7 is a view 7 - 7 of the body of the outboard in Fig.6;

Fig.8 depicts a side view of the hinged platform and formwork of the system according to the present technical solution, installed in the working position for concreting the walls of the next floor;

Fig.9 is a view 9 to 9 of the formwork in Fig.8;

Figure 10 illustrates the preparation for installation of the hinged platform of the system according to the present technical solution on the finished wall of the next floor;

11 depicts a side view of a bolt for engaging the capture of the hinged pad in a system made in accordance with this technical solution;

Fig.12 is a view of 12-12 bolts in Fig.11;

Fig.13, 14 - elements of the bolt in Fig.11;

Fig depicts a hinged platform, in side view, with means for installing it on the wall, made in accordance with the present technical solution;

Fig. 16 is a view of the hinged pad in Fig. 15.

6, 7 show the housing 20 of the hinged platform for floor-wise erection of the external wall of the building from reinforced concrete, carried out according to this technical solution.

Frame 21 hinged platform, assembled from metal beams. As shown in Fig.6, two transverse beams 22, at one end, are fastened at right angles to the vertical struts 23 using bolts 24, the other ends of the beams 22 and racks 23, respectively, are connected by diagonal beams 25. On the transverse beams 22, on one level, fixed longitudinal beams 26, bearing a single deck 27, made, for example, of multilayer plywood. In a preferred embodiment, a system hinged pad

made one-level and does not have a second deck, located at the level of a floor below.

At the upper ends of each of the beams 22, grips 28 are fixed, providing engagement for the heads of the bolts of the hinged platform, fixed in the wall of the building.

The housing 20 (Fig.7) contains two grippers. In the case of a considerable length, it can have more than two grips, for example, a third gripper fixed between the two extreme ones. In the present implementation, the gripper 28 comprises a fork 29, as well as the gripper of a known landing pad depicted in FIG. 4. The choice of the relative position of the grippers 28, as well as the arrangement of bolts for engaging the grippers 28, are explained below.

A guard 30 is fixed to the ends of the beams 22, opposite the grips 28. To give the frame 21 stiffness, the vertical posts 23 are connected by diagonal bars 31.

To move the hinge body 20 using an external lifting device at the four corners of deck 27, levers 32 are connected to the frame 21. Lifting eyes 33 are made in the levers 32 to engage the slings of the lifting device. The levers 32 are mounted on the axles 34 mounted on the frame 21 with the possibility of rotation. The levers 32 are shown in Fig.6, 7 in the raised position, which they occupy under load, but can be rotated to the lowered position when they are released from the slings, so as to be removed in the slots in the deck 27, as shown in Fig.15 . At the lower ends of each of the beams 22 fixed wall stops 35.

On Fig, 9 shows the formwork of the system of the present technical solution installed in the working position for filling the walls of the next floor.

A description of the operation of the system of the present technical solution is given below together with a further description of its implementation in relation to the construction of the wall of the next floor using the formwork in Figs. 8, 9. It is understood that,

the wall 38 of the previous floor shown in FIG. 8 is made in exactly the same way using this system.

The same formwork panels 40 are installed in the working position for concreting the walls of the next floor. Each shield 40 contains a front cover 41 of multilayer plywood, mounted on horizontal beams 42. The horizontal beams 42 are fastened by vertical beams 43. The number of vertical beams depends on the width of the shield, in this implementation, the shield 40 contains two beams 43. The shields 40 have openings corresponding to each other passing through the vertical beams 43 and the front cover 41. The position of the holes in the shields 40 is defined by the holes 44 in the overlays 45, mounted on the beams 43 (Fig.9). The distance between the beams 43 defines the pitch of the holes along the width of the shield. Holes 44 and their corresponding holes in the front cover 41 are performed during the assembly of the boards with an accuracy that ensures matching of the counter holes in any pair of panels.

The number of horizontal rows of holes in the boards of different sizes may be different depending on the height of the shield. In this implementation, the shield 40 contains two horizontal rows of holes along the width of the shield, passing at levels along the height of the shield near the upper and lower ends of the vertical beams 43, respectively. Through the counter holes in the shields 40, tie rods 46 are passed, providing mutual fixation of the shields 40 at a distance of the thickness of the wall being erected by nuts 47.

The distance between the grippers 28 of the hinged platform (Fig.7) is a multiple of the pitch of the holes 44 in a horizontal row along the width of the shield 40 of the formwork (Fig.9). In this implementation, the distance between the grippers 28 is equal to the distance between the holes 44 in the same row along the width of the shield.

During the construction of the wall of the first floor, the formwork panels are installed based on the foundation of the building under construction. When erecting the outer wall of each next floor (FIG. 6), the shield 40, mounted on the inside of the wall being erected, is supported by the lower edge on the floor level 48 and fixed in

upright using racks 49. The position of the outer shield 40 mounted on a wooden spacer 50 supported by the body 20 of the hinged pad is fixed with tie rods 46. The body 20 of the hinged pad is mounted on the outside of the finished external wall 38 of the previous floor.

Concrete mortar is poured into the space between the front coverings of 41 panels 40. After the concrete solution has hardened, the nuts 47 are unscrewed, the panels 40 are separated from the finished wall of the next floor and the studs 46 are removed. After removing the tie rods 46, through holes remain in the wall. These technological holes are subsequently walled up during the finishing work in the building.

After the walls of the next floor, after their construction, the concrete floor is concreted, after which they begin the construction of the next floor.

In a preferred implementation of the system, the outboard contains two sets of identical bolts for engaging the grippers, the number of bolts in each of which is equal to the number of grips in the outboard. The mounted platform of this implementation includes two sets of bolts, the first set contains two bolts 52, the second contains two bolts 53. The bolts of both sets are connected by cables 54 to the body 20 of the mounted platform. The place of fastening of the cables 54 on the housing 20 is selected so that it is accessible to the installer from deck 27 of the outboard platform. The body 20 of the hinged platform is mounted on bolts 52, which are fixed on the inside of the wall 38 using washers 55 and nuts 56.

The bolts 53 of the second set are used to mount the housing 20 on the wall of the next floor, and prior to their use are placed so that they do not interfere with the work of the installer, for example, as shown in Fig. 8. The design of the bolts 52, 53, corresponding to the shape of the grippers 28 and described in detail below, provides the ability to install and remove the body 20 of the mounted platform from the wall when the bolts are fixed to the wall.

Figure 10 illustrates the preparation for installation of formwork for concrete wall of the next floor.

The through holes 57 in the wall 58 of the finished floor, remaining after the removal of the studs 46 from it, are used to install the hinged platform. For this, the bolts 53 from the second set are inserted from the outside of the wall 58 into the through holes 57 of the upper horizontal row. The location of these holes is determined by the location of the holes 44 (Fig.9) in the upper row along the width of the shield. The accuracy and repeatability of the positions of the through holes 57 from floor to floor, determined by the precise manufacture of panels 40, does not necessitate the adjustment of the distance between the grippers 28, which simplifies the design of the hinged platform.

The bolts 53 are inserted into the holes 57 from the deck 27 of the outboard mounted on the wall 38 of the previous floor, if necessary, the installer uses a ladder 59 to install the bolts 53, which is installed on the deck 27. Next, the bolts 53 are fixed from the inside of the wall 58, acting from the floor overlapping 48 from the inside of the building, using washers 55 and nuts 56, similar to how bolts 52 are fixed to wall 38.

Then, the slings of the lifting device are hooked to the lifting eyes 33 in the levers 32 (Fig. 6) and, using the lifting device (not shown), the hinged platform housing 20 is removed from the wall 38 of the previous floor, moved to the installation site on the wall 58 of the next floor, and the grips 28 are hooked to the bolts 53 fixed in the wall 58. After loosening the slings, the stops 35 come into contact with the wall 58 and the housing 20 occupies a predetermined position on the wall.

The bolts 52 remaining in the wall 38 are released from the inside of the wall 38, for which the nuts 56 are unscrewed and pushed out of the outside of the wall 38, acting from the floor of the previous floor (not shown). Thus removed from the wall 38, the bolts 52 hang on the cables 54 under the body 20 of the outboard installed above the floor. Bolts 52, acting from the deck

27, pulled up by cables 54 up and laid as bolts 53 had been laid before.

11-14 depict the construction of the bolts 52, 53. The head 60 of the bolt (11) contains an annular groove 61 made for the passage of the forks 28. A ring 62 is welded to the head 60 to secure the end of the cable 54. The cable can be attached to ring 62 with a carabiner (not shown). The diameter of the bolt body 63 is selected so that the bolt passes into the hole 57, and the length of the bolt body 63 must exceed the thickness of the outer wall of the building under construction, so that the bolt can be fixed on the inner side of the wall. A thread 64 is made on the part of the body 63 of the bolt. The bolt contains a nut 56 with an internal thread, a mating thread 64 (Fig. 13) and a washer 55 (Fig. 14). At the end of the bolt, opposite the head 60, a tetrahedron 65 is made, at the end of which a risk 65 is applied, indicating the position of the ring 62 on the head 60 (Fig. 12). When the bolt is fixed in the hole 57, the ring 62 should be located below the head 60 so that it does not interfere with the engagement of the gripper 28.

The presence of the tetrahedron 65 and risks 66 allows using the key to install the bolts 52, 53 in the correct position on the inside of the wall. The design of the head 60 of the bolt allows the engagement of the plug 29.

The use of lightweight, economical formwork, the feature of which is the technological through holes in the erected wall in combination with the execution of bolts for installing the hinged platform with the possibility of fixing, and then, releasing and removing from the wall from the side opposite to the one from which the bolts are inserted into the through holes in the wall provides the ability to perform these works from the inside of the wall, from the inside of the building. The installation of a hinged platform on bolts that, after the construction of the wall of the next floor can be released and removed from the wall from the inside of the wall, eliminates the need to go down to carry out these works with

the outside of the wall to the level of the previous installation of the outboard.

Thus, the present technical solution of the system for floor-by-floor construction of the external wall of the building provides increased safety of construction work due to a decrease in the volume and complexity of work performed on the external side of the external wall of the building, as well as the possibility of using a single-level hinged platform, cheaper and more convenient than the well-known two-level . However, the system according to the present technical solution can also be applied with a two-level hinged platform and will provide in this case all the listed advantages except the last.

Fig depicts the implementation of the hinged platform with means for its installation on the wall. The technical solution of the hinged platform is considered on the same implementation example as the technical solution of the system.

The hinged platform is shown mounted on the wall 58 in a predetermined position by means of grippers 28 engaged on the bolts 53. In this position of the hinged platform, deck 27 is located horizontally above the frame 21 of the hinged platform.

In this implementation, the means for installing the hinged platform on the wall includes a device for engaging the slings of the lifting device, made in the form of four levers 32 located at the corners of the deck 27, two grips 28, shown in Fig.6, 7, and nodes for engaging the grippers. The nodes for engaging the grippers are made in this embodiment in the form of bolts 53 (Fig. 11), adapted to engage the grippers in the form of forks 29. Each gripper 28 is equipped with a latch 70 mounted for rotation on the axis 71, mounted on the gripper 28. The lever 32 is shown in the lowered position. The latch 70 is depicted in the closed position in which the latch tooth 72 is located at the mouth 73 of the grip fork 29. In this position, the latch 70 prevents the grip fork 29 from engaging with the bolt head 60. The lever 32 has a kinematic connection with a latch 70.

In this implementation, the latches 70 of both grips 28 are connected each to the lever 32 closest to it, the other two levers 32 mounted on the opposite side of the grippers 28 are not connected to the latches 70. The kinematic connection of the retainer 70 with the lever 32 provides a closed position of the retainer 70 with the lower the position of the lever 32. In this implementation, the kinematic connection is made in the form of an articulated rod 74 connecting the latch 70 to the lever 32. The rod 74 is pivotally connected to the console 75, rigidly mounted on the lever 32. The axis 71 of the pair lock llena axis of the lever 34, when the lever 32 is installed in the raised position 76 (shown by the dashed line), the hinged rod 74, carried by the lever 32, causes the latch 70 to rotate counterclockwise (with respect to Fig.15) and take an open position in which it is possible to disconnect gripper 28 with a bolt 53. The lever 32 is moved from the raised to the lowered position in the slot 77 in the deck 27.

In another implementation, the latch of the gripper containing the fork can be made differently, for example, in the form of a rod mounted in a guide fixed to the gripper, providing a reciprocating movement of the rod along the plane of the fork, similar to the latch shown in Fig. 4. In this case, the lever can be mounted on an axis fixed to the grip transverse to the plane of the fork, and the kinematic connection of the latch with the lever may not contain articulated traction, but can be made in the form of a cam connection.

In a preferred embodiment, the levers are designed so that their installation in a lowered position on a hinged platform installed in a predetermined position on the wall occurs under the influence of its own weight. With sufficient weight of the lever, the installation of the lever in the lowered position will occur under the influence of its weight if the raised position of the lever, determined by the direction of the tensioned slings, is not vertical.

For reliable installation in the lowered position, the center of gravity of the lever should be shifted (in the direction of rotation to the lowered

position) relative to the line connecting the axis of the lever with the center of the lifting eye at its end. Such a shift of the center of gravity of the lever can be a lifting eye with a displacement relative to the longitudinal axis of symmetry of the lever.

It should be understood that in another implementation of the hinged pad of the present technical solution, the nodes for engaging the grippers can be made in the same way as the bolts 7 and anchor elements 5 shown in FIG. 3, known from the prior art. Another alternative may be the implementation of grips, for example, in the form of hooks. Units for engaging such grips should include loops adapted to engage hooks.

The use of a lifting device as a drive for controlling the clamps of the grips of the hinged platform, in which the transmission mechanism is a device for engaging the slings of the lifting device, made in the form of levers returning to their initial lowered position under the influence of their own weight, provides automatic fixation of the grippers, and thereby, reduction labor intensity and improving the safety of work performed at a height on the outside of the wall of a building under construction.

Claims (8)

1. A system for floor-by-floor erection of an external wall of a building made of reinforced concrete, including a formwork containing two boards for pouring concrete mortar between them to the height of the boards when erecting the wall of the next floor, the formwork contains tie rods, and the boards have openings arranged in rows located in rows with at a predetermined step along the width of the shield for passage of the tie rods through them and mutual fixation of the shields with the tie rods at a distance equal to the thickness of the wall being erected, the tie rods are made to be removed from the wall after hardening of the concrete mortar, characterized in that it contains a hinged platform for supporting the shield, the hinged platform includes a housing comprising a frame, at least one deck fixed to the frame and at least two grips fixed to the frame a distance multiple of the step of the holes in a row along the width of the shield, the hinged platform further comprises bolts for engaging the grippers, made with the possibility of passing through the holes in the wall remaining after removing the tie rods, each bolt contains Means for fastening the bolt in the wall, the bolt is made so that, being inserted from one side of the wall into the through hole in the wall, it can be fixed as well as released and pushed back from the through hole from the opposite side from which it was inserted. 2. The system according to claim 1, characterized in that the hinged platform is made single-level, containing one deck. 3. The system according to claim 1, characterized in that the hinged platform contains bolts for engaging the grippers in an amount twice the number of grippers, the hinged platform further comprises cables connecting each bolt to the body of the hinged platform so that the cable mounting points on the housing are accessible to the installer from the deck of the landing platform. 4. A hinged platform for supporting the formwork shield used in the floor-by-floor erection of a building’s external wall made of reinforced concrete, the hinged platform contains a frame and means for its installation on the building wall in a predetermined position, the tool includes a device attached to the frame to engage the slings of an external lifting device, at least two grippers fixed to the frame and nodes for engaging the grippers, configured to be fixed in the wall and to engage grips for them, when these nodes are fixed in At the same time, at least two grippers each contain a movable latch, which can be installed in a closed position, in which, when the gripper is engaged with the specified node, the latch prevents them from being disconnected, and in the open position, which makes it possible to engage and disconnecting the gripper with the specified node, characterized in that the device for engaging the slings contains axes mounted on the frame, and levers mounted one on each axis, at one end of each lever is made a cage eye to engage the slings of the lifting device, the levers are mounted on the axles with the possibility of turning them into the raised position that they hold under load when the hinged platform hangs on the slings of the lifting device, hooked to the lifting eyes in the levers, and in the lowered position when the levers are free from the load, each grip containing the latch contains a kinematic connection of the latch with the lever, providing a closed position of the latch with the levers lowered and an open position of the latch pa at the raised position levers. 5. A hinged platform according to claim 4, characterized in that the means for installing it on the wall of the building contains two gripping clamps, each of which is connected to the clamps of the levers connected to one clamp. 6. A hinged platform according to claim 5, characterized in that the kinematic connection of the latch with the lever contains a rod, the ends of which are pivotally connected, respectively, with the latch and the lever. 7. A hinged platform according to claim 4, characterized in that the assembly for engaging the gripper comprises a bolt having a head at one end, and each gripper contains a fork, an annular groove is made in the head of the bolt for passing the forks in it, the gripper containing a latch contains the axis of the latch fixed on the fork, on which the latch is mounted to rotate between the open and closed positions, the latch contains a tooth that blocks the mouth of the fork in the closed position of the latch. 8. The hinged platform according to claim 4, characterized in that the levers of the device for hooking the slings are configured to accept, in the absence of load, the lowered position under the influence of its own weight, when the hinged platform is mounted on the wall of the building in a predetermined position.