Fixation method of lifting eye on concrete element obtained by method of casting into sliding form, and support for lifting eye
SUBSTANCE: group of inventions relates to fixation of lifting eyes on a concrete element during its installation. A lifting eye is made of a metal rod and is at least partially located inside a cavity made in the concrete element surface. The above method involves transfer of at least the forces acting in longitudinal direction of the concrete element and applied to the lifting eye to the above concrete element by means of a support. A support is placed at least partially into the above cavity of the concrete element in which the lifting eye is located.
EFFECT: improving lifting eye fixation efficiency.
10 cl, 4 dwg
The technical field to which the invention relates.
The invention relates to the fastening of the mounting loop on the concrete element, such as a hollow or solid concrete slab obtained by the casting method in a sliding formwork, installation of the concrete element. In particular, the invention relates to a method for fastening a mounting loop at least during installation of the concrete elements, as well as to the support that is intended for use in conjunction with a mounting loop of the concrete element at least during installation of the concrete element.
The level of technology
Concrete elements during their manufacture are usually supplied with various mounting hinges, which are designed to introduce them hooks of a crane during installation of the concrete elements. These mounting tabs provide a faster, more convenient and more secure mounting of heavy concrete elements with a crane.
Mounting hinges for reinforced concrete slabs (in particular, hollow-core concrete slabs) obtained by the casting method in a sliding formwork, usually attached to the concrete slab after its receipt, but prior to hardening of concrete.
In the case of hollow-core concrete slabs installation mounting loops is performed by opening the upper surface sugandhapatta concrete slabs - or on the same line with emptiness, or in line with the wall between the cavities and the placement of the element forming the mounting loop, thus obtained deepening. To ensure secure mounting of the loop element, forming a mounting loop can be placed in such a way that it relies on creating the initial tension reinforcement hollow core slabs; for example, this is ensured by placing the end sections of the element, forming a mounting loop, under which creates the initial tension reinforcement of hollow core slabs.
Element forming a mounting loop, usually made of a metal rod by bending it in a suitable form; this form contains a portion forming a mounting loop, and the end portion designed to be placed inside the concrete and possibly under creating the initial tension reinforcement concrete slabs obtained by the casting method in a sliding formwork.
Mounting loop, in addition, is usually placed in the concrete slab obtained by the casting method in a sliding formwork, so that its highest point is essentially flush with the upper surface of this slab, and in the specified upper surface has a recess formed around the mounting tabs to allow the introduction of lifting hooks into the mounting loop. When mounting the loop is in such a recess is not necessary to remove it from the concrete slab after the installation of the last, as solid and smooth the top surface of concrete slabs easily obtained by filling the recesses accommodating the mounting loop, for example, mortar, or other suitable levelling compound.
In the case of hollow core slabs inside the depression, which received its upper surface during installation of the mounting loop and which surrounds the mounting loop, enter the Cup-shaped element (usually plastic) to prevent the occurrence of the alignment structure inside the cavities of hollow core slabs in the process of leveling the upper surface of this plate after its installation.
Mounting tabs to the present time was usually placed on the top surface of concrete slabs obtained by the casting method in a sliding formwork, so that in the region of each end of the concrete slab was installed two mounting tabs next to each other. In this case, the installation of concrete slabs was performed by means of the lifting boom to ensure the elimination of redundant obliquely acting forces applied to the mounting loops. Excessive obliquely acting forces can cause the element, the image of the store mounting loop changes its position in the concrete slab to be mounting that impairs binding and in the worst case leads to the separation of the mounting tabs from the concrete slabs during the operation of the installation and, consequently, to the destruction of reinforced concrete slabs subject to installation, and possibly injury of personnel working on the construction site.
Disclosure of inventions
According to the invention, inside the recess for mounting hinges, which are made in the concrete element, obtained by the casting method in a sliding formwork, near the mounting loop is entered bearing, which is used to secure this mounting tabs in the concrete element at least in the longitudinal direction of the latter. In the result, at least those forces which are directed in the longitudinal direction of the concrete element and attached to the mounting loop during installation of the concrete element, can be successfully transferred from the mounting tabs of the concrete element to be mounted. In this case, the installation of the concrete element can be performed without lifting the boom. This makes it easier and faster manipulation of concrete elements and placement of concrete elements during their installation, in particular on the construction site.
According to the invention, the mounting loop or element forming a mounting loop formed or: open the IAOD of a metal rod by bending it in a suitable form. These types of elements forming a mounting loop, known, for example, from the publications EP 1878854 and WO 2008/025894.
According to the invention, a support for mounting hinges, preferably made so that some of the forces that are deflected from the longitudinal direction of the concrete element and attached to the mounting loop in the operation of installation of the concrete element is passed to this pillar of the concrete element.
According to the invention, a support for mounting hinges, preferably made so that it is clamped in position when the lifting hook is inserted into the mounting tabs. Therefore, the lifting hook holds a support for mounting the loop is stationary during the operation of the installation, i.e. at a time when the force applied to the support, maximum. Due to this, during the operation of the installation can be prevented displacement of the support under the action of attached forces.
According to the invention, a support for mounting hinges, preferably, is a separate element that before the mounting operation of the concrete element is placed in the recess for mounting hinges concrete element in order to secure this mounting tabs and that after the operation the installation of the concrete element is removed from the recess. Thus, the support may preferably be administered as a component mounting equipment used by the CSOs in the installation of the concrete element; more precisely, the support is used in conjunction with a lifting hook, used in the operation of the installation.
Bearing according to the invention is particularly useful in the process of mounting the solid concrete slabs or hollow-core concrete slabs.
We offer support for mounting hinges concrete element contains a section abutting against the side wall of the recess for mounting hinges, made in the concrete element; and a section that connects the specified section, abutting against the side wall of the recess for mounting hinges, and the outer surface of the mounting tabs to pass from the mounting tabs of the concrete element at least forces acting in the longitudinal direction of the concrete element and attached to the mounting loop during installation.
Bearing according to the present invention contains, preferably, at the upper edge of the section, abutting against the side wall of the recess for mounting hinges, made in the concrete element) section rests on the upper surface of the concrete element, i.e. the section that rests on the surface surrounding the recess for mounting the hinges of the concrete element. This section rests on the upper surface of the concrete elements, enhances the pinning action supports and improves the stiffness of support.
Bearing according to the present invention, preferably, the designs are so that section, which connects the section abutting against the side wall of the recess for mounting hinges, and the outer surface of the mounting tabs has a length in the cross section which essentially corresponds to the diameter of the grooves for the mounting tabs of the concrete element, and has an opening width which essentially corresponds to the width of the mounting tabs. This opening also has a length, which may, preferably, be of the same length mounting tabs to be placed in the hole.
The characteristics of the proposed method is defined in paragraph 1 of the claims, and signs offer support defined in paragraph 7 of the claims.
Brief description of drawings
The following is a detailed description of the invention with reference to the drawings, which depict examples of its implementation:
figures 1A and 1B schematically show a support according to one variant of implementation, installed in conjunction with a mounting loop of the concrete element,
figures 2A and 2B schematically show a support according to alternative implementation that is installed together with mounting loop of the concrete element.
The implementation of the invention
Figures 1A and 1B schematically illustrate a support 1 according to the present invention installed in conjunction with a mounting loop 3 concrete element, to the which in this case is a hollow-core concrete slab 2. Figure 1A shows a support 1 in cross section, and figure 1B shows the support 1 at the top.
Bearing 1 consists of sections 4, abutting against the side wall of the recess for mounting hinges, made in hollow-core concrete slab 2, section 5, which connects the partition 4 and the outer surface of the mounting tabs 3 and section 6, rests on the upper surface of the hollow core slabs 2.
In the embodiment shown in figures 1A and 1B, section 4 support 1 is essentially cylindrical and is closed at its bottom by a partition 5 having a cut or hole where entered mounting loop 3, as shown in the figures, and at least in the longitudinal direction of the hollow core slabs pairing between the specified cut or hole and the mounting loop 3 is essentially dense. Section 6, which is attached to the upper edge of the section 4 support 1, which in this case is planteary ledge surrounding the upper edge of the section 4.
During installation of hollow core slabs 2 using mounting tabs 3 experiencing obliquely acting force, whose direction is shown by an arrow in figure 1A. In this case, the mounting loop 3 is based on section 5 of the support 1, and section 5 transmits the force to the wall cavities of hollow core slabs 2 through section 4 Therefore, COSO operating force applied to the mounting loop 3 when the installation of hollow core slabs 2, is not able to bend the entire element, forming a mounting loop as part of the mounting tabs on the outside supports, takes only essentially obliquely vertical component of the applied force. Because of this hollow-core concrete slab, provided with supports according to the present invention can be mounted without the use of the lifting boom.
Support 1, preferably made of metal, such as sheet steel, and preferably is a component mounting equipment, made with the possibility of mounting the loop 3. In other words, the support 1, preferably, is not part of mounting tabs attached to the hollow-core concrete slab 2.
In relation to option implementation, shown in figures 1A and 1B, it should be noted that section 4 does not necessarily have to go to the bottom of the recess, and section 5, which connects the loop 3 and section 4, does not have to be located at a bottom of the recess. According to the present invention, the only requirement is the following: distance from section 5 to the upper part of the mounting tabs 3 should be such that the lifting hook to be put in place the structure in the mounting loop could be properly inserted into the mounting tabs 3. Thus, the lifting hook clamps the support 1 in the desired position and prevents its withdrawal from the deepening of the hollow core slab under the action of forces applied to this support during the operation of the installation.
Figures 2A and 2B schematically illustrate alternative bearing 11 according to the present invention installed in conjunction with a mounting loop 13 of the concrete element, which in this case is a hollow-core concrete slab 12. Figure 2A shows the support 11 in cross section, and figure 2B shows the support 11 at the top.
In this embodiment, base 11 consists of sections 14, rests only in the side wall of the recess for mounting hinges, made in hollow-core concrete slab 12, section 15, which connects the partition 14 and the outer surface of the mounting tabs 13 and section 16, rests on the upper surface of the hollow core slabs 12 along the length of the section 14.
Designed bearing 11 supports mounting loop 13 in the operation of installation of hollow core slabs 12, preferably, for example, only in the longitudinal direction of the hollow core slabs, which sections 14 and 16 are oriented in the direction of the center in the longitudinal direction INR is apostates concrete slab. Components of forces acting essentially in other directions and attached to the mounting loop 11 during the operation of the installation of hollow core slabs 12 are the connecting strap 11.
Compared with the embodiment shown in figures 1A and 1B, an implementation option, shown in figures 2A and 2B, has a "truncated" design, which reduces production costs and costs of material, but sufficient to support the mounting tabs in the direction of the most dangerous bending forces.
For the person skilled in the art it is obvious that in the examples described above may be added a number of modifications and changes without departing from the scope of the invention. Therefore, the above examples do not limit the invention, and the scope of protection of the latter being defined only by the attached claims.
1. The method of fastening mounting tabs (3, 13) on the concrete element (2, 12) obtained by the casting method in a sliding formwork, at least during installation of the specified concrete element is performed using the mounting tabs and mounting loop is formed from a metal rod and at least partially located within the depressions made in the surface of the concrete member, in a specified way to ensure transmission of the at IU the e forces acting in the longitudinal direction of the concrete element and attached to the mounting loop, specified concrete element by means of a support (1, 11), which is placed at least partially in the specified deepening of the concrete element, which is mounting a loop.
2. The method according to p. 1, characterized in that also transmit forces that are deflected from the longitudinal direction of the concrete element and attached to the mounting loop (3) through the support (1) the specified concrete element (2).
3. The method according to p. 1, characterized in that the support (1, 11) is a separate element that before installation of the concrete elements placed together with the specified deepening of the concrete element (2, 12) and a mounting loop (3, 13) located in the recess, and which after Assembly is removed from the concrete element.
4. The method according to p. 1, characterized in that the support (1, 11) establish together with a lifting hook, join with a mounting loop (3, 13).
5. The method according to p. 1, characterized in that the support (1, 11) is clamped in a predetermined position by placing the lifting hook in the mounting loop (3, 13) secured to this support.
6. The method according to one of paragraphs.1-5, characterized in that the concrete element, obtained by the casting method in a sliding formwork, is a solid concrete slab or hollow, Zhelezobeton the reduction plate (2, 12).
7. Bearing (1, 11) for mounting hinges (3, 13), formed from a metal rod and located in a concrete element (2, 12) obtained by the casting method in a sliding formwork, contains the partition (4, 14), rests on the side wall of the recess for mounting hinges, made in the concrete element, and the section (5, 15) connecting the specified partition (4, 14), rests on the side wall of the recess for mounting hinges, and the outer surface of the mounting tabs to pass from the mounting tabs of the concrete element at least forces that are applied to the mounting loop during installation of the concrete element and directed in the longitudinal direction of the concrete element.
8. Reliance on p. 7, characterized in that it contains at the upper end of the specified partition (4, 14), rests on the side wall of the recess for mounting hinges, section (6, 16), rests on the upper surface of the concrete element (2, 12).
9. Reliance on p. 7, characterized in that it is made with possibility of installation in conjunction with a lifting hook is used during installation of the concrete element (2, 12).
10. Bearing in one of the paragraphs.7-9, characterized in that the section (5, 15), which connects the partition (4, 14), rests on the side wall of the recess for mounting hinges, and the outer surface of the mounting tabs (3, 13), has such a length of the cross section, which is essentially suitable for the t to the diameter specified deepening of the concrete element, and has an opening width which essentially corresponds to the width of the mounting tabs.
SUBSTANCE: cabin-ellipsoid is assembled from two hemispheres into slip matrices separately from each other. Before placement of a flexible pneumatic form the entire hemisphere is covered with a reinforced polyethylene film. Then with the help of an electric hoist the second hemisphere is extracted from the adjacent slip matrix, and both hemispheres are welded into a single structure in the form of an ellipsoid. Excessive pressure is applied to the flexible form. Then cement mortar is fed into the slip matrix to form a concrete shell only to fill in the reinforcement in the lower hemisphere. At the same time, whole the concrete mortar in the lower hemisphere is hardening, a light shell is made from a plastic material for upper hemisphere of the ellipsoid. Hot air is supplied with the help of an electric heater under a sheet of viniplast until it starts sagging into the matrix. The finished dome is installed in place. A manhole is arranged above the centre of the small support ring. The second form of cubic shape is applied to create heat insulation by means of concrete supply into the ellipsoid.
EFFECT: reduced costs, higher efficiency and easier labour.
SUBSTANCE: method to erect a carcass building consists in the following. After erection of the foundation, tubular columns of the carcass are mounted as oval in the cross section, and are rigidly connected with the foundation by anchor bolts. Main beams of the carcass are mounted and connected with the columns. A left non-detachable formwork is suspended onto the carcass with a tower crane, a concrete pump station is mounted, as well as flexible pumpcrete pipes. Plastic fine-grained expansive concrete is injected at the pressure into tubular shells by the "bottom up" method, and columns are turned into tube confined concrete pillars. After concrete setting, main and auxiliary beams of the slab are mounted. With the help of the tower crane the formwork left in the slab is suspended to the main and auxiliary beams of the slab. The additional operating reinforcement of the slab is mounted, flexible pumpcrete pipes are installed, and by control of concrete supply from a panel, the slab is concreted, and concrete is compacted through vibration. The building frame is grown onto the floor, and cycles of erection of the fireproof building carcass are continued until complete erection of the carcass and monolithic slabs of the structure.
EFFECT: reduced labour intensity of assembly.
SUBSTANCE: building element comprises an inclined channel formed in the concrete body, which protrudes at least to one of elements faces, designed for fixing a lifting and an assembling accessory and formed by monolithing of an embedded part into the concrete body, besides, the channel is arranged with the thread on its working surface.
EFFECT: simplified design, higher safety and efficiency in assembly of buildings and structures, provides for considerable metal saving.
3 cl, 7 dwg
SUBSTANCE: frame comprises horizontal beams and vertical supports. Parts of the frame are installed in place by means of at least one lifting device, at the same time at least one of frame supports is installed in place by means of a rigid boom system with the help of its displacement together with a gripping device attached to a boom system. The support rotates to the appropriate setting position by rotation of gripping facilities of the gripping device around at least two axes of rotation. Preferably a lifting device is based on a logging machine and may transport together with it materials required to manufacture and assemble the frame.
EFFECT: improved accuracy of frame elements installation.
14 cl, 2 dwg
SUBSTANCE: entire process of panel assembly from steel galvanised shapes takes place in building ways comprising a bed, mechanisation elements, electric equipment and two stands: a stationary and a mobile ones, along which carriages may move, setting various angles of inclination and height of the assembled panel relative to the horizontal plane, and the mobile stand itself may move along the building ways along the horizontal line, providing for the preset panel length. Carriages and the movable stand are controlled automatically from a control station. Assembly of panels in the building ways is started from installation of transverse shapes according to basic openings onto fixators of carriages of the stationary and movable stands and pulling of the shapes to the plates of the carriage shaft by rotating magnet handles. Then the movable stand is moved along the building ways along linear guides, keeping the length of the assembled panel. Then longitudinal profiles are installed between transverse ones and fastened at one side. Afterwards the carriages with a panel frame fixed on them are raised into the upper position and are rotated by 180. Then the carriages with the panel frame are lowered to the height convenient for assembly. Then shapes are fastened at the opposite side to form a stiff frame of the panel, and lining is installed on this side. Afterwards the frame with the lining is raised into the upper position, rotated by 180 and lowered down, the insulant is laid, and the lining is installed on the second side of the panel, the finished panel is removed from the building ways, with preliminary disconnection of magnets and removal of carriage fixators.
EFFECT: building ways design does not block up the working space around the frame of the assembled panel, leaves free access and approach to areas of assembly and makes it possible to perform assembly works at different levels without reinstallation of the assembled panel.
2 cl, 4 dwg
SUBSTANCE: loading anchor, preferably for lifting, turning, transportation and/or laying of building elements, for instance, concrete panels, arranged inside a building element so that it comprises a head of building elements connection to a loading machine, and also an anchor body, including active parts, which, when the anchor is arranged inside the building element, providing for sticking of the latter to the building element material. At the same time a part that forms the anchor body comprises at least one plane passing along the main plane and at least one flat part wound from the main pkane, which determines the active parts.
EFFECT: simplified design, cheaper manufacturing.
12 cl, 9 dwg
SUBSTANCE: method includes formation of ceiling disks from reinforced concrete plates with interlocking side facets on supporting columns. Steel cables are inserted between girders that connect supporting columns and in girder cavities. Ceiling plates manufactured with grooves for reinforcing cables are installed onto mounting tables. Tables are also provided with grooves. Grooves in plates and tables are matched to each other. Then reinforcing cables are inserted into plate grooves. Cables are stressed to plates installed between girders, and in girder cavities up to required values with tensioning devices. At that packet of ceilings disk is formed, with further monolithing of grooves and slots of every packets and girder cavities with fast-hardening cement-sand grout. Then mounting tables are removed.
EFFECT: acceleration of works on erection of ceiling and increase of operational characteristics of ceiling disks.
SUBSTANCE: invention is related to the sphere of construction, namely, to method of columns assembly and device for columns gripping. Method of assembly of columns of crossbar-free frame of building includes preliminary installation of mounting tables on mounted column in horizontal position. Fixing of mounted column is carried out with the help of gripping mount with flexible sling. Flexible sling is fixed, embracing exactly half of column cross section on one side. On the other side the second equal half of column cross section is embraced with u-shaped metal bracket with lugs. Formation of gripping mount is carried out by means of flexible sling passage through bracket lugs. After lifting of mounted column and putting it in vertical position, column is lowered into foundation pile and vertically leveled. Foundation pile is fixed in head of mounted column. Mounted column is lowered until its lower end surface touches gasket on top end surface of mounted column. Gasket is rigidly fixed metal plate of square form. Area of plate is 0.4 times less than area of end surfaces of joined columns. After that strainers are fixed to lugs of mounting tables with their one side, and with their second side - to shoes. Shoes are fixed to the surface of ceiling plates. After strainers fastening flexible sling is removed by means of remote cable. Cable has been preliminarily inserted into rings fixed to u-shaped bracket. Then welding is done along perimeter of butt joint of columns end surfaces with interrupted seam in diagonally opposite sequence. At that gaps are left between welding seams of 20-25 mm. Cement-sand mortar is supplied to gaps until butt joint between end surfaces of columns are filled.
EFFECT: reduction of labour intensity and material intensity of erection.
2 cl, 3 dwg,1 ex
FIELD: construction, particularly to erect building structure having different heights in severe climatic conditions and in confined urban areas.
SUBSTANCE: method involves using retained form technology for wall and floor panel molding. Wall and floor panels are molded of quick-setting mixes in space isolated from environment under protection of service story structure, which is repeatedly lifted through necessary height without molded wall loading with equipment weight and building material reserve mass in amount of service story volume. Support frames have reduction gears with toothed wheels brought into permanent engagement with support rule teeth. Power is supplied to electric support frame drives. The support rules are located on vertical walls of freight elevator shafts. After wall and floor panel erection service story structure is connected with floor panel over the last building story and is left as room to contain lift equipment used in building operation as per the design, to install rain water receiving devices, which receives rain water and convey rain water in rain water sewage and to arrange air purification equipment used for building room venting.
EFFECT: decreased time of cast-in-place wall erection and floor panels of quick-hardening mixes in space isolated from environment regardless of atmospheric processes in building site due to decreased time of waiting of strength development in set sand blend.
FIELD: construction engineering.
SUBSTANCE: invention relates to methods of re-loading of building materials and their delivery to place of building walls by placement of brick or blocks, and attachments used for implementing the method. According to invention, pair of containers with building materials are installed on cradle to be lifted to story. These containers are pallets, buckets or pallet with bucket. Longitudinal side of container is orientated in direction of longitudinal side of cradle. Two roll trucks are also used. Cradle is made with inclined section on cantilever end or is furnished with removable bridge. Cradle is lifted by crane its cantilever end is placed o edge of balcony of required story, or removable bridge is installed on cradle to move with containers along said bridge to story floor. Other end of cradle is held on slings of crane. Then trucks are installed on first container, contacting members of trucks are connected with corresponding members of container and container is lifted by turning the trucks with placing container on their cross-members and is rolled over deck to story floor and further along floor to place of laying of building materials. Trucks are removed from container by turning each truck in direction opposite to direction of mounting, are rolled onto cradle and after fitting truck on second container, it is moved to place of laying. This done, trucks are removed from container and are lowered in cradle.
EFFECT: increased capacity.
8 cl, 2 ex, 10 dwg
SUBSTANCE: device (10) for connection of reinforcement rods has retention part (13) for retention of reinforcement rod, having section (13b) with inner helical thread, which is screwed onto section (11a) with external helical thread shaped at external periphery of reinforcement rod (11); flat plate fixing part (14), passing in direction of axis C from retention part (13) for reinforcement rod; fixing ledge (15), intended on fixing part (14); and locking opening (16), arranged in fixing part (14) between fixing ledge (15) and retention part (13) and providing for fixation of fixing ledge (15) of other device (10) for connection of reinforcement rods with lock hole (16). Besides at the far end of fixing ledge (15) there is a stop (15a) provided to prevent fall-out of fixing ledge (15) from lock hole (16). Next to lock hole (16) there is an adjacency hole (17) provided having inner diametre for passage of stop (15a). Between adjacent hole (17) and lock hole (16) there is a connection section (18) shaped, through which fixing ledge (15) may pass.
EFFECT: possibility to easily and quickly connect reinforcement rods without application of tool for tightening of screws.
3 cl, 11 dwg
FIELD: construction equipment.
SUBSTANCE: rod ends are made with thickenings which have screw. For rods joining joiner is used with inner screw. Thickenings on rod ends are received on forging press fitted with equipment for cold heading of reinforcing rod ends. As stated device for disembarkation forging die is used, having longitudinal channel along the length for operation security with long reinforced rods.
EFFECT: provision of process capability widening of used equipment with serviceability and economic feasibility preservation.
20 cl, 12 dwg
SUBSTANCE: device for manufacturing the reinforced concrete sleepers with studs contains the form for laying concrete mixture, elements for installation and fixation of studs. Elements for mounting and fixing the studs are designed as a rod made of thermoplastic elastomer (TPE), at the front edge of lower part of the rod there is embedded metal screw by means of which the rod is connected with the form with the possibility of disassembly, the lower part of the rod is designed with thread the pitch of which coincides with the pitch of inner thread of stud; the front edge of lower part of the rod is designed as a washer.
EFFECT: increase of reliability of spatial fixation of studs in the form, exclusion of concrete mixture ingress into the inner cavity of stud.
5 cl, 2 dwg
FIELD: process engineering.
SUBSTANCE: mobile carriage for loading binders is positioned on binder driving machine chassis to displace along forming path. Sine-curved binders are manually placed on said carriage in gripping sets with multiple coupled jaws. Note here that said gripping set is downed unless it drives binders in moulded live concrete blanks arranged in lengthwise moulds parallel with rails during the binder driving. Said set incorporates also the binder vibrator to facilitate driving in said blanks. Set gripping set is driven vertically by hydraulic piston. Said set comprises also sprayer supplied from tank.
EFFECT: perfected design.
6 cl, 9 dwg
FIELD: process engineering.
SUBSTANCE: invention relates to machine building. Proposed method comprises feeding transparent construction material with fibrous composite containing transparent fibers to first transfer device to feed said material continuously to coat application device wherein fibrous composite is coated with castable mortar. Second transfer device carries fibrous composite from said application device into casing. Said composite is continuously laid into said casing in zigzag manner. Said mortar with transparent fibers is cured to produce transparent workpiece. Surface of the latter is processed to make transparent fiber cross-sections open.
EFFECT: uniform distribution of fibers in fluid motor.
16 cl, 8 dwg
FIELD: process engineering.
SUBSTANCE: invention relates to construction, namely, to method of fabricating concrete articles. Proposed method comprises preparing dry concrete mix by mixing cement, gravel and sand, adding dosed water, mixing said mix, placing reinforcing material and pouring prepared mix into mould. Reinforcing materials represent cords with or without impregnation with binding agent. Every said cord comprises braid and core made from single aramide threads with linear density of 9.0-3600 tex and single or twisted carbon threads with linear density of 100-3700 tex. Braid is made from single or twisted aramide threads with linear density of 9.0-600 tex with the number of braids varying from 1.0 to 12 braid per cm. Cords are laid in mould in parallel and stretched. After stretching, mould is filled by fresh concrete mix and vibrated. Prepared mix is cured at 22±2°C and humidity of 95+3% for 28 days.
EFFECT: higher quality and strength.
6 cl, 10 tbl, 5 ex