CN112692960A - Steel fiber mixed arrangement system for ultra-high performance concrete - Google Patents
Steel fiber mixed arrangement system for ultra-high performance concrete Download PDFInfo
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Abstract
The invention relates to the technical field of ultra-high performance concrete, in particular to a steel fiber mixed arrangement system for the ultra-high performance concrete. The mixing mechanism comprises a concrete pumping device and a conveying pipe, the conveying pipe is fixedly connected with the output end part of the concrete pumping device, a support frame is arranged below the conveying pipe, the mixing mechanism also comprises a conveying mechanism for conveying steel fibers into the conveying pipe, the conveying mechanism is arranged on a conveying pipeline, a second vibration motor is arranged on the outer wall of the conveying pipeline, and the second vibration motor is fixed on the outer wall of the conveying pipe; the arrangement mechanism comprises a steel fiber directional arrangement mechanism arranged at the tail end of the conveying pipe and a steel fiber three-dimensional arrangement device arranged at the outer side of the tail end of the conveying pipe. The technical scheme is used for solving the problem that in the prior art, the steel fibers are arranged in the concrete in a single direction, so that the formed concrete cannot meet the requirement of multi-direction high-strength stress.
Description
Technical Field
The invention relates to the technical field of ultra-high performance concrete, in particular to a steel fiber mixed arrangement system for the ultra-high performance concrete.
Background
The ultra-high performance concrete is particularly suitable for large-span bridges, anti-explosion structures and thin-wall structures, and is used in high-abrasion and high-corrosion environments. At present, the ultra-high performance concrete is applied to some practical projects, such as a large-span pedestrian bridge, a road surface, a railway drainage ditch cover plate, a steel cable anchoring reinforcing plate and the like.
For example, the chinese patent, patent No. CN201910467797.9, discloses a device for directionally arranging steel fibers and a method for manufacturing steel fiber reinforced concrete, which comprises a power supply, a blower, an adsorption switch, an air pipe, a steel fiber adsorption disk, an adsorption needle, and a directional magnetic field band; the air blower is connected with the steel fiber adsorption disc through an air pipe, the adsorption needle is positioned on the disc surface of the steel fiber adsorption disc, and the adsorption needle adsorbs the steel fibers when the adsorption switch is turned on; the adsorption needle can rotate in the steel fiber adsorption disc; the directional magnetic field generated by the directional magnetic field strip can be used for steel fiber orientation.
Although steel fiber can be directionally arranged in the patent, the arrangement mode is layer-by-layer plane arrangement, and the arrangement direction points to one direction, so that the produced concrete can only meet the high-strength stress in a single direction, and if the side face of the arrangement direction of the steel fiber is subjected to a larger external force, the concrete is also easy to break.
Disclosure of Invention
Aiming at the technical defects, the invention aims to provide a steel fiber mixed arrangement system for ultra-high performance concrete, which is used for solving the problem that in the prior art, steel fibers are arranged in the ultra-high performance concrete in a single direction, so that the formed ultra-high performance concrete cannot meet the requirement of multi-direction high-strength stress.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
a steel fiber mixed arrangement system for ultra-high performance concrete is characterized by comprising a mixing mechanism for mixing steel fibers and concrete and an arrangement mechanism for arranging the steel fibers in the concrete;
the mixing mechanism comprises a concrete pumping device and a conveying pipe, wherein the conveying pipe is fixedly connected with the output end part of the concrete pumping device, a support frame is arranged below the conveying pipe, the support frame is fixedly connected with the ground, the mixing mechanism also comprises a conveying mechanism for conveying steel fibers into the conveying pipe, and the conveying mechanism is arranged on a conveying pipeline;
the arrangement mechanism comprises a steel fiber directional arrangement mechanism arranged at the tail end of the conveying pipe and a steel fiber three-dimensional arrangement device arranged outside the tail end of the conveying pipe, and the outlet end of the conveying pipe is arranged on the central line of the steel fiber three-dimensional arrangement mechanism.
The overall working principle of the technical scheme is as follows: the control system controls the second vibrating motor and the concrete conveying pump to work, the concrete is pushed into the conveying pipe, the second vibrating motor enables the conveying pipe to vibrate at high frequency, an air gap can be formed between the inner wall of the vibrating conveying pipe and the concrete in the conveying pipe, the flowing resistance of the concrete in the conveying pipe can be greatly reduced, meanwhile, the conveying mechanism arranged on the conveying pipe conveys steel fibers into the conveying pipe to be mixed with the concrete, the steel fibers can be fully and uniformly mixed with the concrete in the flowing process of the concrete along the conveying pipe due to the fact that the concrete moves along the conveying pipe to be similar to turbulent flow, when the steel fibers move to the steel fiber directional arrangement mechanism at the end part of the conveying pipe, the steel fiber directional arrangement mechanism can change the included angle between part of the steel fibers and the horizontal plane in a clearance mode under the effect of the control system, and the steel fibers discharged into the pouring mold are uniformly distributed in multiple directions, and finally, rotating part of the steel fibers in the pouring mould towards the vertical direction by the steel fiber three-dimensional arrangement device, so as to finally obtain the ultrahigh-performance concrete with the steel fibers in three-dimensional distribution in the concrete.
Further inject, conveying mechanism is including installation casing, rotating electrical machines, first electro-magnet group and conveyer belt, the one end of installation casing is fixed on the conveyer pipe, and with the conveyer pipe between the intercommunication, the other end is equipped with the steel fibre hopper, the conveyer belt sets up the middle part at the installation casing, and the one end of conveyer belt and the one end intercommunication of installation casing and duct connections, the other end of conveyer belt is located the below of steel fibre hopper export, first electro-magnet group sets up the inside at installation casing and duct connections one end, rotating electrical machines fixes on the conveyer pipe, and its output extends to the inside of installation casing and the connecting portion fixed connection that first electro-magnet group outside center set up.
Further inject, first electro-magnet group includes annular solid fixed ring, a plurality of groups adsorption electromagnet and is located solid fixed ring and leads electrical pillar and insulated column on the axis, and is a plurality of adsorption electromagnet along circumferencial direction evenly distributed between solid fixed ring's inner wall and outer wall, it constitutes a cylinder to lead electrical pillar and insulated column, and the insulated column is located the right lower part of cylinder, the one end of cylinder is fixed on the lateral wall of installation casing, and arbitrary a set of all be equipped with the conducting strip on the adsorption electromagnet, the conducting strip is located solid fixed ring's inboard, and with the cylinder surface in close contact with that electrical pillar and insulated column constitute.
In summary, the specific working principle of the conveying mechanism is as follows: the steel fibre hopper of installation casing one end slides to the conveyer belt through vibration or steel fibre's dead weight, the conveyer belt carries steel fibre to the other end of installation casing, and drop to the outside of first electro-magnet group, because the adsorption electro-magnet's on first electro-magnet group upper portion conducting strip with lead electrical pillar contact, so be located the adsorption electro-magnet that leads the electrical pillar outside and can adsorb steel fibre, and under rotating electrical machines's effect, solid fixed ring can take place rotatoryly, when the adsorption electro-magnet's of adsorption electro-magnet of adsorption steel fibre conducting strip breaks away from and leads electrical pillar and insulated column contact, the adsorption electro-magnet loses magnetism, will drop to in the pipeline, so circulate, continuously carry steel fibre in the concrete to the conveyer pipe through the rotation mode, guarantee the continuity of its transport, avoid the condition that steel fibre appears the local disappearance in the concrete.
Further inject, the top of conveyer belt still is equipped with supplementary conveyer belt, interval between conveyer belt and the supplementary conveyer belt is 2-5 times of steel fibre width, and the motion direction of conveyer belt and supplementary conveyer belt is opposite, and its beneficial part lies in, the motion direction of supplementary conveyer belt and conveyer belt is opposite can effectually realize distributing staggering the steel fibre that gathers together, and the interval between the two has guaranteed that the steel fibre of carrying to in the pipeline can not appear the gathering of great volume, has guaranteed the mixed effect of steel fibre in the concrete pipe.
Further inject, the directional mechanism of arranging of steel fibre includes that a plurality of groups of orientation that evenly fix on the conveyer pipe along the circumferencial direction arrange electro-magnet and protective housing, arbitrary a set of the electro-magnet includes that the first orientation that centrosymmetric set up arranges electro-magnet and the directional electro-magnet of arranging of second, the one end magnetic pole perpendicular to the outer wall of conveyer pipe of electro-magnet and second of arranging in the first orientation, and first orientation arrange electro-magnet and second orientation arrange electro-magnet and conveyer pipe contact jaw inter attraction, the protective housing is located the directional electro-magnet outside of arranging of a plurality of groups, and with a plurality of groups of orientation arrange the electro-magnet cladding in.
To sum up, the specific working principle of the steel fiber directional arrangement mechanism is as follows: the control system controls the mode that only any one group of directional arrangement electromagnets are electrified at a uniform moment, a magnetic field penetrating through the conveying pipe is formed between two end parts of the conveying pipe, which are positioned on the outer wall of the conveying pipe, of the first directional arrangement electromagnets and the second directional arrangement electromagnets, the N poles of the first row of arrangement electromagnets or the second row of arrangement electromagnets are distributed to the S poles of the other one of the first row of arrangement electromagnets and the second row of arrangement electromagnets, namely, the steel fibers in the conveying pipe can be influenced by the magnetic field to form deflection, the steel fibers in different directional arrangement modes can be obtained by controlling the electrification of the different directional arrangement electromagnets, the steel fibers conveyed into the pouring mold are distributed in multiple directions on the inner layer of the concrete, and the strength of the molded concrete can.
Further, the parts of the conveying pipe, which are in contact with the plurality of groups of directional arrangement electromagnets, are made of PVC pipes, and the PVC pipes are beneficial in that the PVC pipes cannot be magnetized and cannot interfere with magnetic fields formed by the directional arrangement electromagnets.
Further inject, the three-dimensional device of arranging of steel fibre includes the mounting bracket, the mounting bracket is including the stand that is located both sides and the crossbeam of stand top, the both ends of crossbeam respectively with the upper end fixed connection of stand, both sides the stand between be equipped with first slip table, be equipped with the mount pad on the slider of first slip table, the inside of mount pad is equipped with first vibrating motor, be equipped with the three-dimensional mechanism of arranging of steel fibre of fixed connection with it on the bottom surface of mount pad, the three-dimensional mechanism of arranging of steel fibre includes that connecting plate and a plurality of rectangle arrange the electro-magnet of arranging in the three-dimensional of connecting plate below, both sides the inboard of stand is equipped with second slip table and third slip table respectively, the both ends of first slip table are fixed in respectively on the slider of second slip table and third.
In summary, the specific working principle of the three-dimensional arrangement device for steel fibers is as follows: when concrete mixed with steel fibers is filled into a pouring mold, the control system controls the first sliding table to move, the steel fiber arrangement mechanism is moved to the upper part of the pouring mold, then the control system controls the sliding blocks of the second sliding table and the third sliding table to move downwards to enable the three-dimensional arrangement electromagnets at the lower ends of the steel fiber arrangement mechanism to be positioned inside the pouring mold, then the control system opens the first vibration motor and energizes the three-dimensional arrangement electromagnets, so that the concrete is vibrated and compacted by the three-dimensional arrangement electromagnets, meanwhile, the steel fibers inside the concrete are gradually magnetized due to the magnetic induction lines of the three-dimensional arrangement electromagnets, the magnetized L-shaped steel fibers rotate along the direction of the magnetic induction lines, most of the L-shaped steel fibers are inclined to be distributed on the bottom surface of the pouring mold, and meanwhile, the Z-shaped steel fibers cannot easily rotate due to large movement resistance of the Z-shaped steel fibers in the concrete, most Z-shaped steel fibers are distributed in the horizontal plane, after local vibration and steel fiber arrangement are completed, the control system controls the second sliding table and the third sliding table to move upwards and simultaneously disconnect the power supply of the electromagnet, so that the steel fiber arrangement mechanism is lifted upwards, then the control system controls the first sliding table to move on the horizontal plane, the steel fiber three-dimensional arrangement mechanism is driven to move to the next position to be processed, and the steps are repeated until the working position of the steel fiber arrangement mechanism covers the inner space of the whole pouring mold.
Further defined, the steel fibers include Z-shaped steel fibers and L-shaped steel fibers, which are advantageous in that the Z-shaped steel fibers do not participate in the rotation so that the L-shaped steel fibers added into the concrete are rotated, thereby maintaining the distribution in the horizontal direction and the distribution in the vertical direction.
The Z-shaped steel fibers need to be magnetized before being added into the conveying pipe, and the L-shaped steel fibers are stronger under the action of the electromagnet, so that most of the L-shaped steel fibers can rotate against the resistance of concrete.
Further limit, control system and rotating electrical machines, adsorb the electro-magnet, the electro-magnet is arranged to the orientation, the electro-magnet is arranged to the solid, first slip table, second slip table and third slip table between electric connection.
The invention has the technical effects that: (1) through the cooperation use of mixing mechanism and conveying mechanism, make steel fiber can be constantly carried to pipeline in, and steel fiber and concrete accomplish the homogeneous mixing in the pipeline. (2) Through the cooperation use of the directional arrangement mechanism of the steel fibers and the three-dimensional arrangement device of the steel fibers, the steel fibers are distributed along the plane in multiple directions and vertically in the pouring mold, namely the steel fibers are arranged in the concrete in a three-dimensional manner, and the strength of the concrete after being formed in all directions under stress can be effectively enhanced.
Drawings
Fig. 1 is a perspective view of a hybrid arrangement system according to the present embodiment.
Fig. 2 is a schematic sectional front view of the conveying mechanism in this embodiment.
Fig. 3 is a left side sectional view schematically showing the conveying mechanism in this embodiment.
FIG. 4 is a schematic cross-sectional view of the fiber orientation arrangement mechanism in this embodiment.
FIG. 5 is a schematic cross-sectional view of another state of the steel fiber orientation arrangement mechanism according to the present embodiment.
Fig. 6 is a perspective view of the three-dimensional arrangement mechanism of steel fibers in the present embodiment.
Fig. 7 is a front view of the three-dimensional arrangement mechanism of steel fibers in this embodiment.
Fig. 8 is a schematic cross-sectional view of the overall structure front view of the three-dimensional arrangement mechanism of steel fibers in the present embodiment.
Fig. 9 is a schematic view of the arrangement of the steel fibers inside the casting mold according to the present embodiment.
Reference numerals
The steel fiber three-dimensional arrangement device A, the directional arrangement mechanism B of steel fiber, conveying mechanism C, mixing mechanism D, left side stand 1, right side stand 2, crossbeam 3, second slip table 4, third slip table 5, first slip table 6, mount pad 7, connecting plate 8, the electro-magnet 9 of three-dimensional arrangement, casting mold 10, first vibrating motor 11, Z-shaped steel fiber 12, L-shaped steel fiber 13, directional arrangement electro-magnet 20, steel fiber hopper 30, conveyer belt 31, supplementary conveyer belt 32, installation casing 33, first electro-magnet group 34, lead electrical pillar 35, insulating column 36, conducting strip 37, adsorption electro-magnet 38, rotating electrical machines 39, concrete hopper 40, conveyer pipe 41, support frame 42.
Detailed Description
The following is further detailed by way of specific embodiments:
as shown in fig. 1, a steel fiber mixing and arranging system for ultra-high performance concrete mainly includes a mixing mechanism D for mixing steel fibers and concrete and an arranging mechanism for performing planar arrangement and three-dimensional arrangement on the steel fibers in the concrete, the mixing mechanism D mainly includes a pumping device for pushing the concrete in a concrete hopper 40 to the interior of a conveying pipe 41, the conveying pipe 41 is fixed to the bottom surface by a support frame 42, the pumping device is the prior art, no redundant description is provided in this embodiment, a second vibrating motor is further fixed on the conveying pipe 41, the second motor mainly has two functions in this application, firstly, a gap is formed between the inner wall of the conveying pipe 41 and the concrete by vibration, the movement resistance of the concrete can be greatly reduced, secondly, the vibration of the conveying pipe 41 can shake down the steel fibers in a steel fiber hopper 30 arranged at one end of an installation housing 33 to a conveying belt, meanwhile, a shaking effect is provided for the gathered steel fibers, so that the gathered steel fibers are promoted to be dispersed, and the conveying and mixing effects of the steel fibers are ensured. The arrangement mechanism mainly comprises an orientation arrangement mechanism for carrying out plane orientation on the steel fibers and then conveying the steel fibers to the interior of the pouring mold, and a three-dimensional arrangement device for rotating the steel fibers in the pouring mold to arrange the steel fibers in the vertical direction.
It should be noted that, in order to improve the arrangement effect of the steel fibers, it is preferable in this embodiment that the steel fibers include the Z-shaped steel fibers 12 and the L-shaped steel fibers 13, because the rotation resistance of the Z-shaped steel fibers 12 in the concrete is relatively large, and the rotation resistance of the L-shaped steel fibers 13 in the concrete is relatively small, so that the purpose is to rotate a part of the steel fibers added into the concrete, and a part of the steel fibers does not participate in the rotation, thereby maintaining the distribution in the horizontal direction. More preferably, the L-shaped steel fibers 13 are magnetized before they are fed into the feeding pipe 41, in order to make the magnetized L-shaped steel fibers 13 more effective by the magnetic force, so that they can be rotated against the resistance of the concrete.
As shown in fig. 2 and 3, the main structure of the conveying mechanism C includes a mounting housing 33, a rotating motor 39, a first electromagnet group 34 and a conveying belt 31, the mounting can be divided into three parts, i.e. two ends and a middle part, one end of the mounting housing 33 is fixed on a conveying pipe 41 and is communicated with the conveying pipe 41, the conveying pipe 41 is provided with a gap, one end of the mounting housing 33 is fixed outside the gap of the conveying pipe 41, the other end of the mounting housing 33 is provided with a steel fiber hopper 30, a hopper outlet is arranged at the bottom end of the hopper, the conveying belt 31 is arranged in the middle of the mounting housing 33, one end of the conveying belt 31 is communicated with one end of the mounting housing 33 connected with the conveying pipe 41, the other end of the conveying belt 31 is positioned below the outlet of the steel fiber hopper 30, the moving direction of the conveying belt 31 points to one end of the mounting housing 33 connected with the conveying pipe 41, the first electromagnet group 34 is, the rotating motor 39 is fixed on the conveying pipe 41, and the output end of the rotating motor 39 extends into the mounting housing 33 and is fixedly connected with the connecting part arranged at the center of the outer side of the first electromagnet group 34, and the rotating motor 39 mainly functions to drive the first electromagnet group 34 to rotate.
First electro-magnet group 34 includes annular solid fixed ring, a plurality of groups adsorb electro-magnet 38 and be located solid fixed ring epaxial leading electrical pillar 35 and insulating cylinder 36, a plurality of adsorption electro-magnet 38 are along circumferencial direction evenly distributed between solid fixed ring's inner wall and outer wall, it constitutes a cylinder to lead electrical pillar 35 and insulating cylinder 36, and insulating cylinder 36 is located the right lower part of cylinder, the one end of cylinder is fixed on the lateral wall of installation casing 33, all be equipped with conducting strip 37 on arbitrary a set of adsorption electro-magnet 38, conducting strip 37 is located solid fixed ring's inboard, and with the cylinder surface in close contact with that leads electrical pillar 35 and insulating cylinder 36 to constitute. The conductive column 35 and the insulating column 36 do not rotate in this embodiment, and what rotates is the fixed ring, and the rotation of the fixed ring drives the first electromagnet group 34 inside to rotate.
Preferably, the auxiliary conveyor belt 32 is further arranged above the conveyor belt 31, the length of the auxiliary conveyor belt is smaller than that of the conveyor belt 31, the distance between the conveyor belt 31 and the auxiliary conveyor belt 32 is 2-5 times of the width of the steel fibers, in the embodiment, the selected multiple is 2 times, and the movement directions of the conveyor belt 31 and the auxiliary conveyor belt 32 are opposite, so that the auxiliary conveyor belt 32 and the conveyor belt 31 can effectively distribute and stagger the steel fibers gathered together in the opposite movement directions, and the distance between the auxiliary conveyor belt 32 and the conveyor belt 31 ensures that the steel fibers conveyed into the conveying pipe 41 cannot be gathered in a large volume, so that the mixing effect of the steel fibers in the concrete pipe is ensured.
As shown in fig. 4 and 5, the steel fiber directional arrangement mechanism B includes a plurality of groups of directional arrangement electromagnets 20 and a protective housing, which are uniformly fixed on the conveying pipe 41 along the circumferential direction, and the specific mechanism refers to fig. 4 and 5, any one group of directional arrangement electromagnets includes a first directional arrangement electromagnet 20 and a second directional arrangement electromagnet 20, which are arranged centrosymmetrically, one end magnetic poles of the first directional arrangement electromagnet 20 and one end magnetic poles of the second directional arrangement electromagnet 20 are perpendicular to the outer wall of the conveying pipe 41, contact ends of the first directional arrangement electromagnet 20 and the second directional arrangement electromagnet 20 and the conveying pipe 41 attract each other, and the protective housing is located outside the plurality of groups of directional arrangement electromagnets 20, and covers the plurality of groups of directional arrangement electromagnets 20 therein. When the control system controls any one group of the directional arrangement electromagnets 20 to be electrified, the Z-shaped steel fiber 12 in the conveying pipe 41 has large rotation resistance, the movement direction of the Z-shaped steel fiber is not changed, meanwhile, in order to reduce the resistance in the moving process, the connecting line of the two ends of most of the Z-shaped steel fiber 12 is parallel to the axis of the conveying pipe 41, and the L-shaped steel fiber 13 rotates selectively when passing through the steel fiber directional arrangement mechanism B, the rotation is caused by the magnetization of the steel fiber directional arrangement mechanism B or the magnetization of the steel fiber directional arrangement mechanism C, and the other part of the rotation is caused by the magnetization treatment before the steel fiber is added.
As can be seen from fig. 4 and 5, when the control system controls the electromagnets in different directional arrangements to be energized, the Z-shaped steel fibers 12 are not changed in position, but the L-shaped steel fibers 13 are rotated in the direction of the magnetic induction line, so as to obtain steel fibers in different rows of arrangement directions in the casting mold 10.
As shown in fig. 5 to 8, the three-dimensional arrangement device a for steel fibers is disposed above the casting mold 10, or the casting mold 10 filled with ultra-high performance concrete is moved to a position right below the arrangement device, the arrangement device mainly includes a mounting rack, in this embodiment, the mounting rack mainly includes a left side column 1 and a right side column 2 located on both sides, and a cross beam 3 located above the two side columns, the cross beam 3 is fixedly connected with the upper ends of the two side columns, and the fixed connection mode in this embodiment is welding. Preferably, for making the mounting bracket fix that subaerial effect is better, all be equipped with the fixed plate at the lower extreme of stand, be equipped with the bolt hole on the fixed plate, be equipped with rag bolt in the bolt hole, only need fix rag bolt subaerial when using, can realize the fixed to the mounting bracket.
Be equipped with first slip table 6 in the inside of mounting bracket, first slip table 6 sets up under crossbeam 3, and is located between the stand of both sides, and on the gliding slider of second slip table 4 and the third that sets up on the stand medial surface of both sides was fixed in respectively at the both ends of first slip table 6, the slider of first slip table 6 was close to one side of bottom surface, and is on a parallel with ground setting, and the central cross-section of mounting bracket is all close to the slider of second slip table 4 and third slip table 5.
The installation base 7 is fixed on the sliding block of the first sliding table 6, the first vibration motor 11 is arranged inside the installation base 7, the first vibration motor 11 is connected to the upper surface of the ground of the installation base 7 through bolts, the three-dimensional steel fiber arrangement mechanism is fixed on the lower surface of the bottom surface of the installation base 7 and mainly comprises a connecting plate 8, the connecting plate 8 is fixed on the bottom surface of the installation base 7, a plurality of three-dimensional arrangement electromagnets 9 are fixedly arranged below the connecting plate 8, the three-dimensional arrangement electromagnets 9 are uniformly distributed on the upper layer of the connecting plate 8 in a rectangular mode, preferably, the distance between every two adjacent three-dimensional arrangement electromagnets 9 is 2.5-3 times of the length of the steel fiber, and in the implementation, preferably 2.5 times, and the problem that the three-dimensional arrangement electromagnets 9 interfere with the rotation of the steel fiber can be reduced. And meanwhile, N poles of the plurality of three-dimensionally arranged electromagnets 9 are all vertically arranged downwards, so that the magnetized L-shaped steel fibers 13 are ensured to be only under the action of magnetic force in one direction, and the rotating effect of the L-shaped steel fibers 13 in the concrete is better.
It should be noted that, unless otherwise explicitly stated or limited, the terms "mounted," "connected," "fixed," and the like are used broadly in the present invention, and may be, for example, fixedly connected, detachably connected, or integrally connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
The foregoing is merely an example of the present invention and common general knowledge of known specific structures and features of the embodiments is not described herein in any greater detail. It should be noted that, for those skilled in the art, without departing from the structure of the present invention, several changes and modifications can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the patent. The scope of the claims of the present application shall be determined by the contents of the claims, and the description of the embodiments and the like in the specification shall be used to explain the contents of the claims.
Claims (10)
1. A steel fiber mixed arrangement system for ultra-high performance concrete is characterized by comprising a mixing mechanism for mixing steel fibers and concrete and an arrangement mechanism for arranging the steel fibers in the concrete;
the mixing mechanism comprises a concrete pumping device and a conveying pipe, the conveying pipe is fixedly connected with the output end part of the concrete pumping device, a supporting frame is arranged below the conveying pipe, and is fixedly connected with the ground;
the arrangement mechanism comprises a steel fiber directional arrangement mechanism arranged at the tail end of the conveying pipe and a steel fiber three-dimensional arrangement device arranged outside the tail end of the conveying pipe, and the outlet end of the conveying pipe is arranged on the central line of the steel fiber three-dimensional arrangement device.
2. The steel fiber mixed arrangement system for the ultra-high performance concrete according to claim 1, wherein the conveying mechanism comprises a mounting shell, a rotating motor, a first electromagnet group and a conveying belt, one end of the mounting shell is fixed on the conveying pipe and communicated with the conveying pipe, the other end of the mounting shell is provided with a steel fiber hopper, the conveying belt is arranged in the middle of the mounting shell, one end of the conveying belt and one end of the mounting shell connected with the conveying pipe are communicated, the other end of the conveying belt is located below an outlet of the steel fiber hopper, the first electromagnet group is arranged inside one end of the mounting shell connected with the conveying pipe, the rotating motor is fixed on the conveying pipe, and an output end of the rotating motor extends to the inside of the mounting shell and is fixedly connected with a connecting portion arranged at the center of the outer side of the first electromagnet group.
3. The steel fiber mixed arrangement system for the ultra-high performance concrete according to claim 2, wherein the first electromagnet group comprises an annular fixing ring, a plurality of groups of adsorption electromagnets, and a conductive column and an insulating column which are positioned on the axis of the fixing ring, the adsorption electromagnets are uniformly distributed between the inner wall and the outer wall of the fixing ring along the circumferential direction, the conductive column and the insulating column form a cylinder, the insulating column is positioned at the lower right part of the cylinder, one end of the cylinder is fixed on the side wall of the mounting shell, a conductive sheet is arranged on any group of the adsorption electromagnets, and the conductive sheet is positioned at the inner side of the fixing ring and is in close contact with the surface of the cylinder formed by the conductive column and the insulating column.
4. The steel fiber hybrid arrangement system for ultrahigh performance concrete according to claim 2, wherein an auxiliary conveyor belt is further provided above the conveyor belt, the distance between the conveyor belt and the auxiliary conveyor belt is 2-5 times the width of the steel fibers, and the movement directions of the conveyor belt and the auxiliary conveyor belt are opposite.
5. The steel fiber mixed arrangement system for the ultrahigh-performance concrete according to claim 1, wherein the steel fiber directional arrangement mechanism comprises a plurality of groups of directionally arranged electromagnets and a protective shell, the groups of directionally arranged electromagnets are uniformly fixed on the conveying pipe along the circumferential direction, any group of electromagnets comprises a first directionally arranged electromagnet and a second directionally arranged electromagnet which are arranged in a central symmetry manner, one end magnetic poles of the first directionally arranged electromagnet and one end magnetic poles of the second directionally arranged electromagnet are perpendicular to the outer wall of the conveying pipe, the first directionally arranged electromagnet and the second directionally arranged electromagnet attract each other with the contact end of the conveying pipe, and the protective shell is located outside the groups of directionally arranged electromagnets and covers the groups of directionally arranged electromagnets.
6. The system of claim 5, wherein the transportation pipe is made of PVC pipe at the contact portion with the directional electromagnet.
7. The steel fiber hybrid arrangement system for ultra-high performance concrete according to claim 1, it is characterized in that the steel fiber three-dimensional arrangement device comprises a mounting rack, the mounting rack comprises upright posts at two sides and a cross beam above the upright posts, two ends of the cross beam are respectively and fixedly connected with the upper ends of the upright posts, a first sliding table is arranged between the upright posts at two sides, a mounting seat is arranged on the sliding block of the first sliding table, a first vibrating motor is arranged inside the mounting seat, the steel fiber three-dimensional arrangement mechanism is fixedly connected with the bottom surface of the mounting seat and comprises a connecting plate and a plurality of rectangular three-dimensional arrangement electromagnets arranged below the connecting plate, a second sliding table and a third sliding table are arranged on the inner sides of the stand columns respectively, and two ends of the first sliding table are fixed on sliding blocks of the second sliding table and the third sliding table respectively.
8. The steel fiber hybrid arrangement system for ultra-high performance concrete according to claim 1, wherein said steel fibers comprise Z-shaped steel fibers and L-shaped steel fibers.
9. The steel fiber hybrid alignment system for ultra-high performance concrete according to claim 8, wherein the Z-shaped steel fibers need to be magnetized before being added into the delivery pipe.
10. The device according to any one of claims 1 to 9, further comprising a control system, wherein the control system is electrically connected to the rotating motor, the adsorption electromagnet, the directional arrangement electromagnet, the three-dimensional arrangement electromagnet, the first sliding table, the second sliding table, the third sliding table, the first vibrating motor and the second vibrating motor.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115091585A (en) * | 2022-06-06 | 2022-09-23 | 中国建筑第七工程局有限公司 | Fiber orientation guiding device |
| CN116494350A (en) * | 2023-06-21 | 2023-07-28 | 湖南东数交通科技有限公司 | Fiber arrangement device for ultra-high performance concrete production |
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| CN111424980A (en) * | 2020-03-16 | 2020-07-17 | 同济大学 | Device for directionally distributing steel fibers and application thereof |
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| CN101913189A (en) * | 2010-07-23 | 2010-12-15 | 河北工业大学 | Method for preparing unidirectional distributive steel fiber reinforced mortar and special equipment thereof |
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| CN109551611A (en) * | 2018-12-04 | 2019-04-02 | 佛山科学技术学院 | A kind of equipment preparing unidirectional distributive steel fiber beams of concrete |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115091585A (en) * | 2022-06-06 | 2022-09-23 | 中国建筑第七工程局有限公司 | Fiber orientation guiding device |
| CN115091585B (en) * | 2022-06-06 | 2023-10-27 | 中国建筑第七工程局有限公司 | Fiber orientation guiding device |
| CN116494350A (en) * | 2023-06-21 | 2023-07-28 | 湖南东数交通科技有限公司 | Fiber arrangement device for ultra-high performance concrete production |
| CN116494350B (en) * | 2023-06-21 | 2023-08-29 | 湖南东数交通科技有限公司 | Fiber arrangement device for ultra-high performance concrete production |
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| CN112692960B (en) | 2022-03-15 |
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