CN114905629B - Steel fiber concrete forming device - Google Patents
Steel fiber concrete forming device Download PDFInfo
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- CN114905629B CN114905629B CN202210519811.7A CN202210519811A CN114905629B CN 114905629 B CN114905629 B CN 114905629B CN 202210519811 A CN202210519811 A CN 202210519811A CN 114905629 B CN114905629 B CN 114905629B
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- blanking
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- 239000000835 fiber Substances 0.000 title claims abstract description 190
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 187
- 239000010959 steel Substances 0.000 title claims abstract description 187
- 239000004567 concrete Substances 0.000 title claims abstract description 73
- 230000007246 mechanism Effects 0.000 claims abstract description 95
- 230000007704 transition Effects 0.000 claims abstract description 69
- 238000007599 discharging Methods 0.000 claims abstract description 10
- 239000006185 dispersion Substances 0.000 claims description 11
- 230000003014 reinforcing effect Effects 0.000 claims description 2
- 239000011210 fiber-reinforced concrete Substances 0.000 claims 1
- 238000000465 moulding Methods 0.000 claims 1
- 239000011374 ultra-high-performance concrete Substances 0.000 description 12
- 238000009826 distribution Methods 0.000 description 9
- 230000009471 action Effects 0.000 description 8
- 230000000694 effects Effects 0.000 description 8
- 230000005484 gravity Effects 0.000 description 6
- 238000000034 method Methods 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000009827 uniform distribution Methods 0.000 description 2
- 238000005266 casting Methods 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 229940085805 fiberall Drugs 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28C5/00—Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions
- B28C5/40—Mixing specially adapted for preparing mixtures containing fibres
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28C5/00—Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions
- B28C5/40—Mixing specially adapted for preparing mixtures containing fibres
- B28C5/404—Pre-treatment of fibres
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28C7/00—Controlling the operation of apparatus for producing mixtures of clay or cement with other substances; Supplying or proportioning the ingredients for mixing clay or cement with other substances; Discharging the mixture
- B28C7/04—Supplying or proportioning the ingredients
- B28C7/06—Supplying the solid ingredients, e.g. by means of endless conveyors or jigging conveyors
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Structural Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Preparation Of Clay, And Manufacture Of Mixtures Containing Clay Or Cement (AREA)
Abstract
The invention relates to a steel fiber concrete forming device, which comprises: a steel fiber feeding bin; the dispersing mechanism is positioned below the steel fiber feeding bin and is of a conical structure, the tip end of the dispersing mechanism faces the steel fiber feeding bin, the included angle between the generatrix of the dispersing mechanism and the horizontal plane is the natural repose angle of the steel fiber, and the conical structure is provided with a plurality of blanking channels; and (3) a transition bin: the concrete feeding device is arranged below the dispersing mechanism, a transition channel communicated with the blanking channel is arranged in the dispersing mechanism, the dispersing mechanism is also communicated with the concrete feeding bin, and the discharging ends of the transition channels are arranged along the array; the forming device can ensure that steel fibers are uniformly dispersed in concrete, and improve the quality of the steel fiber concrete.
Description
Technical Field
The invention relates to the technical field of concrete preparation equipment, in particular to a steel fiber concrete forming device.
Background
The statements herein merely provide background information related to the present disclosure and may not necessarily constitute prior art.
The ultra-high performance concrete is a cement-based composite material with ultra-high mechanical properties, good durability and toughness. The characteristics of the ultra-high performance concrete material are utilized to replace the traditional concrete for the fields of pavement, bridge deck pavement, prefabricated bridge components and the like, and the strength, the rigidity, the fatigue resistance and the crack resistance of the components and the structure can be improved.
The proportion of the ultra-high performance concrete generally comprises fibers, and the steel fibers have remarkable influence on the good mechanical properties and durability of the ultra-high performance concrete. The steel fiber can restrict the deformation of the ultra-high performance concrete and prevent the crack near the fiber from developing, thereby improving the durability of the ultra-high performance concrete. The crack resistance effect of the steel fibers is affected by the fiber distribution direction and the distribution uniformity. The steel fiber parallel to the tensile stress direction can exert the restraint and bridging effect on deformation and crack development to the greatest extent. The uniform distribution of the fibers in the ultra-high performance concrete can obviously reduce the defect when stressed, and improve the overall cracking resistance of the component or structure. Meanwhile, in the ultra-high performance concrete, the cost of the steel fiber accounts for a large part of the total cost, and the material cost can be greatly reduced by reducing the doping amount of the steel fiber, so that the economical efficiency is improved. However, the inventor found that the fiber direction during the mixing process is difficult to control and difficult to disperse uniformly due to the high viscosity of the ultra-high performance concrete itself. Therefore, the conventional stirring method has a problem that the fiber distribution direction and uniformity cannot be controlled.
For example, patent application CN106378857a discloses a forming device for steel fiber directional reinforced ultra-high performance concrete and a use method thereof, wherein the steel fibers are directional by using a magnetic field, but the steel fibers are directly added into the concrete from a charging barrel, so that uniform dispersion cannot be realized in the concrete, and further the quality of the steel fiber concrete is affected.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, and provides a steel fiber concrete forming device which ensures uniform dispersion and fiber direction of steel fibers in concrete and improves the quality of steel fiber concrete.
In order to achieve the above purpose, the invention adopts the following technical scheme
An embodiment of the present invention provides a steel fiber concrete forming apparatus including:
a steel fiber feeding bin;
the dispersing mechanism is positioned below the steel fiber feeding bin and is of a conical structure, the tip end of the dispersing mechanism faces the steel fiber feeding bin, the included angle between the generatrix of the dispersing mechanism and the horizontal plane is the natural repose angle of the steel fiber, and the conical structure is provided with a plurality of blanking channels;
and (3) a transition bin: the concrete feeding device is arranged below the dispersing mechanism, a transition channel communicated with the blanking channel is arranged in the dispersing mechanism, the dispersing mechanism is also communicated with the concrete feeding bin, and the discharging ends of the transition channels are arranged along the array;
the feeding end of the directional mixing mechanism is connected with the discharging end of the corner bin and is provided with a steel fiber directional component.
Optionally, the size of the blanking channel gradually increases along the direction from the center to the edge of the dispersing mechanism.
Optionally, the dispersing mechanism includes cylindrical portion and fixes the conical portion at cylindrical portion top surface, and correspondingly, the blanking passageway is including the first blanking portion that is located conical portion and the second blanking portion that is located cylindrical portion, first blanking position cylindrical structure, second blanking position convergent structure, its great end connection of area to first blanking portion.
Optionally, directional mixing mechanism downward sloping sets up, including steel fiber directional mechanism and the mixing mechanism that connects gradually, steel fiber directional mechanism is equipped with first steel fiber directional component for directional steel fiber, and mixing mechanism is used for mixing steel fiber and concrete.
Optionally, the angle between the directional mixing mechanism and the horizontal plane is 30-60 degrees.
Optionally, the steel fiber orientation mechanism includes first urceolus and is located the first inner tube of first urceolus, is equipped with the directional passageway of steel fiber in the first inner tube, and the feed end of the directional passageway of steel fiber communicates with the discharge end of steel fiber transition passageway, and first inner tube feed end is connected with the discharge end of transition storehouse, and the discharge end of the directional passageway of first inner tube and just fiber all is connected with mixing mechanism, and the space between first urceolus and the first inner tube is equipped with first magnetic field coil.
Alternatively, the steel fiber orientation channels are square in cross-section with sides longer than the length of the steel fibers.
Optionally, the mixing mechanism comprises a second outer cylinder and a second inner cylinder, the second outer cylinder is fixed with the first outer cylinder, the second inner cylinder is fixed with the first inner cylinder, and a second magnetic field coil is arranged in a space between the second outer cylinder and the second inner cylinder
Optionally, a vibrator is further arranged between the second outer cylinder and the second inner cylinder.
Optionally, a reinforcing mesh is arranged at the feeding port of the concrete feeding bin.
The invention has the beneficial effects that:
1. the steel fiber concrete forming device provided by the invention is provided with the dispersing mechanism with the conical structure, steel fibers falling from the steel fiber feeding bin can be dispersed, and the included angle between the bus of the conical structure and the horizontal plane is the natural repose angle of the steel fibers, so that each blanking channel can be ensured to have the steel fibers falling into the same thickness, and the steel fibers enter the transition channels through the blanking channels respectively, so that the steel fibers are uniformly dispersed.
2. According to the steel fiber concrete forming device, as the steel fibers preferentially enter the middle blanking channels, the sizes of the blanking openings gradually become larger along the direction from the center to the edge of the dispersing mechanism, so that the steel fibers can be better dispersed to the periphery, uneven distribution caused by different positions of the blanking channels is offset, approximately equal delivery of the steel fibers in each blanking channel is realized, and the uniformity of steel fiber distribution is ensured.
3. According to the steel fiber concrete forming device, the cross section of the steel fiber directional channel is square, the square cross section is mainly considered to be in any direction when the three-dimensional direction of a space is regulated, and steel fibers can be distributed at any position on the cross section, so that the uniformity of the steel fibers can be improved, and the utilization rate of the channel is maximized.
4. According to the steel fiber concrete forming device, the second magnetic field coil is also arranged in the mixing mechanism, so that the situation that after the steel fibers are mixed with concrete, the steel fibers are changed relative to the previously adjusted direction and deviate from the set value can be avoided, and the orientation effect of the steel fibers is further ensured.
5. The steel fiber concrete forming device is provided with the vibrator, and the ultrahigh-performance concrete cannot generate an interactive directional effect by a magnetic field alone, so that the vibrator is arranged to vibrate the steel fiber concrete, and the directional effect is improved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiments of the application and together with the description serve to explain the application and do not limit the application.
FIG. 1 is a schematic view of the overall structure of embodiment 1 of the present invention;
FIG. 2 is an exploded view of the steel fiber feed bin and supporting bin walls and dispersion mechanism of embodiment 1 of the invention;
FIG. 3 is a front view of a dispersing mechanism according to embodiment 1 of the present invention;
FIG. 4 is a bottom view of the dispersing mechanism of embodiment 1;
FIG. 5 is an exploded view of a dispersing mechanism according to the embodiment 1 of the present invention;
FIG. 6 is a schematic explosion diagram of a dispersing mechanism according to the embodiment 1 of the present invention;
FIG. 7 is a schematic view of the transition bin structure according to embodiment 1 of the present invention;
FIG. 8 is an exploded view of a transition bin according to example 1 of the present invention;
FIG. 9 is a schematic view of a steel fiber orientation unit according to example 1 of the present invention;
FIG. 10 is an exploded view of the steel fiber orienting mechanism according to example 1 of the present invention;
FIG. 11 is a graph comparing steel fiber distribution of a circular section steel fiber orientation channel and a square section steel fiber orientation channel;
FIG. 12 is a schematic view of a mixing mechanism according to embodiment 1 of the present invention;
FIG. 13 is an exploded view of the mixing mechanism according to embodiment 1 of the present invention;
the concrete mixing device comprises a frame body, a steel fiber feeding bin, a concrete feeding bin, a dispersing mechanism, a transition bin, a travelling wheel, a steel fiber orientation mechanism, a mixing mechanism, a supporting bin wall, a power supply and a guide groove, wherein the frame body is 1, the steel fiber feeding bin is 2, the concrete feeding bin is 4, the dispersing mechanism is 6, the transition bin is 6, the travelling wheel is 7, the steel fiber orientation mechanism is 8, the mixing mechanism is 9, the supporting bin wall is 10, the power supply is 11, and the guide groove is formed;
4-1 parts of cylindrical parts, 4-2 parts of conical parts, 4-3 parts of first blanking parts and 4-4 parts of second blanking parts;
5-1, side bin walls, 5-2, first feeding bin walls, 5-3, second feeding bin walls, 5-4, open ends, 5-5, transition channels;
7-1, 7-2, 7-3, 7-4, and 7-4, a first magnetic field coil;
8-1, 8-2, 8-3, and a second magnetic field coil.
Detailed Description
Example 1
The embodiment provides a steel fiber concrete forming device, as shown in fig. 1, including support body 1, install steel fiber feeding storehouse 2, concrete feeding storehouse 3, dispersion mechanism 4, transition storehouse 5 and directional mixing mechanism on the support body 1, support body 1 is as the carrier part of other structures, and the bottom of support body is provided with walking wheel 6, makes things convenient for the removal of whole device.
The concrete feeding device is characterized in that a dispersing mechanism 4 and a concrete feeding bin 3 are connected above the transition bin 5, a steel fiber feeding bin 2 is arranged above the dispersing mechanism 4, concrete fed by the concrete feeding bin 3 enters the inside of the transition bin 5, steel fibers are fed into the steel fiber feeding bin 2 and are led into the dispersing mechanism 4, the dispersing mechanism 4 disperses the fed steel fibers, the dispersed steel fibers are led into a transition channel inside the transition bin 5 and are led into a directional mixing mechanism by the transition channel, the concrete entering the transition bin 5 is led into the directional mixing mechanism by the external space of the transition channel, the directional mixing mechanism comprises a steel fiber directional channel and a directional component which are sequentially arranged, the steel fiber directional channel and the directional component which are communicated with the transition channel are arranged in the steel fiber directional mechanism 7, the steel fibers can be oriented in the steel fiber directional channel under the action of the directional component, and are led into the mixing mechanism 8, and the concrete fed into the transition bin can enter the mixing mechanism 8 to be mixed with the steel fibers which enter the mixing mechanism 8.
Specifically, the frame body 1 is made of a plurality of steel beams and comprises a rectangular bottom frame, traveling wheels 6 are installed at four corners of the bottom frame, and a plurality of support columns are arranged on the bottom frame and used for supporting a steel fiber feeding bin 2, a concrete feeding bin 3, a transition bin 5, a directional mixing mechanism and the like.
As shown in fig. 2, the steel fiber feeding bin 2 includes four guide plates, the four guide plates form an inverted frustum-shaped structure, the bottom end is used as a steel fiber discharging hole, and by adopting the arrangement, the steel fibers poured into the steel fiber feeding bin can be led into the dispersing mechanism. The four guide plates are supported by four supporting bin walls 9, namely a first bin wall, a second bin wall, a third bin wall and a fourth bin wall, wherein the first bin wall and the second bin wall are oppositely arranged and are in an inverted trapezoid shape, and the third bin wall and the fourth bin wall are arranged between the end parts of the first bin wall and the second bin wall. The top ends of the four guide plates are fixedly connected with the top ends of the four supporting bin walls respectively.
As shown in fig. 3-6, the dispersing mechanism 4 adopts a conical structure, is positioned right below a discharge hole of an inverted conical structure formed by the guide plates, and the tip end of the dispersing mechanism is arranged towards the discharge hole of the steel fiber feeding bin.
The steel fibers falling on the dispersing mechanism 4 can be dispersed by the conical surface of the conical structure. The conical structure is provided with a plurality of blanking channels, and steel fibers falling on the dispersing mechanism can enter the transition bin through the blanking channels.
The dispersing mechanism 4 comprises a cylindrical part 4-1 and a conical part 4-2 arranged on the upper surface of the cylindrical part, and correspondingly, the blanking channel comprises a first blanking part 4-3 positioned in the conical part and a second blanking part 4-4 positioned in the cylindrical part.
The first blanking portion 4-3 adopts a cylindrical structure, one end of the first blanking portion extends to the conical surface of the conical portion 4-2, the other end of the first blanking portion extends to the bottom surface of the conical portion 4-2, the second blanking portion 4-4 adopts a tapered structure, the end portion with a larger area is connected with the first blanking portion 4-3, and the end portion with a smaller area extends to the bottom surface of the cylindrical portion 4-1. Through the second blanking part 4-4, the steel fibers can be further collected, and the steel fibers can be conveniently sent out.
The angle between the generatrix of the conical portion 4-2 and the horizontal plane is equal to the natural angle of repose of the steel fibers, which can be obtained in advance according to experiments. By adopting the arrangement, each blanking channel can be ensured to have steel fibers falling into, the steel fibers are prevented from being stacked at the middle position when falling and stacking, the steel fibers at each blanking channel are further ensured to be approximately the same in stacking thickness, and the uniformity of steel fiber dispersion is further realized.
In this embodiment, the blanking channels are arranged in multiple groups, the multiple groups of blanking channels are radially distributed along the circumference where the conical part 4-2 is located, one blanking channel is arranged in the center of the conical part 4-2, and the blanking channels of other groups are all arranged in multiple groups at equal intervals.
Because the steel fibers enter the middle blanking channels preferentially due to the position advantages of the blanking channels in the middle of the conical part 4-2, the quantity distribution of the steel fibers in different channels is uneven, so that in the embodiment, the diameters of the blanking channels gradually become larger along the direction from the center to the edge of the conical part, the uneven distribution caused by the positions is offset, the steel fibers can be better dispersed to the periphery after falling, the equal quantity delivery of the steel fibers in each channel is realized, and the uniformity of the steel fiber dispersion is further ensured.
In order to prevent steel fibers from flowing out of the device, the dispersing mechanism in the embodiment is arranged inside the space surrounded and supported by the four supporting bin walls, and the steel fibers are placed by the four bin walls to flow out of the device.
One side of the steel fiber feeding bin 2 is provided with a concrete feeding bin 3 for adding concrete, in this embodiment, a steel bar net is arranged at a feeding opening of the concrete feeding bin for preventing oversized stones or other sundries from entering the concrete feeding bin, and the subsequent transition bin and the circulation channel of the directional mixing mechanism are blocked.
The steel fiber feeding bin 2 and the concrete feeding bin are both 3 arranged above the transition bin 5, the feeding end of the transition bin is used for receiving steel fibers and concrete, the discharging end of the transition bin is connected with the directional mixing mechanism which is arranged obliquely downwards, in the embodiment, the included angle between the directional mixing mechanism and the horizontal plane is 30-60 degrees, and the steel fibers and the concrete which vertically flow in from the steel fiber feeding bin and the concrete feeding bin are converted into the flowing direction which forms the set included angle along the horizontal plane through the transition bin so as to be matched with the directional mixing mechanism.
Specifically, as shown in fig. 7-8, the transition bin comprises two side bin walls 5-1, a first feeding bin wall 5-2 is arranged between the two side bin walls, a second feeding bin wall 5-3 is further provided with an open end 5-4 serving as a discharge end, a bottom bin wall is further arranged between the two side bin walls, the bottom bin wall is obliquely arranged downwards, so that concrete can flow out of the transition bin 5 under the action of self gravity, the first feeding bin wall 5-2 is fixedly connected with the bottom ends of the dispersing mechanism 4 and the four supporting bin walls 9 of the steel fiber feeding bin, a plurality of steel fiber feeding ports matched with blanking channels are formed in the first feeding bin wall, the second bin wall is fixedly connected with the bottom end of the concrete feeding bin, and the open end of the transition bin is connected with the feeding end of the directional mixing mechanism.
The transition bin is internally provided with a transition channel 5-5 for converting the vertically falling steel fibers into a flow direction which is the same as the setting direction of the directional mixing mechanism.
The transition channel 5-5 is made of a pipeline, and the feeding end of the transition channel is arranged at the steel fiber feeding port of the first feeding bin wall, so that the transition channel is communicated with the blanking channel of the dispersing mechanism.
The discharge ends of the transition channels 5-5 extend to the open end of the transition bin, and the discharge ends of the plurality of transition channels are arranged along a rectangular array in the plane where the open end of the transition bin is located.
Because the blanking channel of dispersion mechanism 4 is the passageway of multiunit along circumference distribution, consequently the feed end of a plurality of transition passageway 5-5 is arranged along circumference array, because the discharge end of a plurality of transition passageway 5-5 is arranged along rectangular array, consequently transition passageway 5-5 includes arc section and straightway, satisfies transition passageway arrangement form's change through the arc end, and straightway slope sets up downwards to make steel fiber carry under self gravity's effect.
The directional mixing mechanism comprises a steel fiber directional mechanism 7 and a mixing mechanism 8 which are sequentially arranged.
As shown in fig. 9-10, the steel fiber orientation mechanism 7 is connected with the open end of the transition bin 5, and comprises a first outer cylinder 7-1 and a first inner cylinder 7-2, wherein the size of the first outer cylinder 7-1 is matched with that of the open end of the transition bin 2, in this embodiment, the feeding ends of the first outer cylinder 7-1 and the first inner cylinder 7-2 are fixed on a supporting plate arranged at the edge of the open end of the transition bin, a plurality of steel fiber orientation channels 7-3 are arranged in the first inner cylinder 7-2, the steel fiber orientation channels 7-3 are made of pipes, the feeding ends of the steel fiber orientation channels are connected with the transition channels 5-5 in the transition bin 5, and steel fibers in the transition channels 5-5 can enter the steel fiber orientation channels under the action of gravity.
In this embodiment, the cross section of the steel fiber directional channel 7-3 is square, and the side length of the steel fiber directional channel is slightly larger than the length of the steel fiber.
As shown in FIG. 11, if a circular cross section is adopted, the steel fibers can only be gathered at the center of the cross section, which is not beneficial to the uniform distribution of the steel fibers, meanwhile, the edge part of the cross section is not provided with the steel fibers, so that the utilization efficiency of the cross section is reduced, and when a square cross section is adopted, the steel fibers can be positioned at any position of the cross section, and the uniformity and the cross section utilization rate of the steel fibers are improved.
Since the cross section of the steel fiber directional channel 7-3 is square, in order to realize the connection between the steel fiber directional channel 7-3 and the transition channel 5-5, the cross section of the discharge end of the transition channel 5-5 is also square, in this embodiment, the cross section of the pipeline as the transition channel 5-5 is directly changed from round to square, and in another embodiment, the end of the transition channel 5-5 is connected with a pipeline with a square cross section at one end so as to realize the connection with the steel fiber directional channel.
A cavity is formed between the first outer cylinder 7-1 and the first inner cylinder 7-2, a first magnetic field coil 7-4 is arranged in the cavity, the first magnetic field coil 7-4 is used as an orientation component, the first magnetic field coil 7-4 is connected with a power supply 10 fixed on the outer side face of the first outer cylinder, the power supply 10 can electrify the first magnetic field coil 7=4 so as to generate a magnetic field, and under the action of the magnetic field, the steel fibers entering the steel fiber orientation channel 7-3 are oriented, so that the steel fibers rotate to a preset direction.
As shown in fig. 11-12, the mixing mechanism 8 includes a second outer cylinder 8-1 and a second inner cylinder 8-2, the second outer cylinder 8-1 is fixed to the discharge end surface of the first outer cylinder 7-1, and the second inner cylinder 8-2 is fixed to the discharge end surface of the first inner cylinder 7-2.
The steel fibers of the steel fiber directional channel 7-3 and the concrete in the first inner cylinder 7-2 can flow into the second inner cylinder 8-2 at the same time, and the mixing occurs in the second inner cylinder 8-2.
The discharge end of the second inner cylinder 8-2 is provided with a diversion trench 11, and the mixed steel fiber concrete flows out of the diversion trench 11 for casting.
In order to prevent the steel fibers from being changed in the direction adjusted before the steel fibers are mixed with the concrete, the second magnetic field coil 8-3 is arranged in the space between the second outer cylinder 8-1 and the second inner cylinder 8-2, the second magnetic field coil 8-3 is connected with the power supply 10 arranged on the outer side surface of the first outer cylinder 7-1, and the magnetic field force can be applied to the steel fibers in the second inner cylinder 8-2 to prevent the direction from being changed.
Because concrete viscosity is higher, especially ultra-high performance concrete, a better orientation effect cannot be generated by a magnetic field alone, and therefore, the vibrator 8-4 is arranged in a space between the second outer cylinder 8-1 and the second inner cylinder 8-2, the vibrator 8-4 is arranged on the outer cylinder surface of the second inner cylinder 8-2, the steel fiber concrete is vibrated, and the orientation effect of the magnetic field is improved.
The working method of the embodiment is as follows:
steel fibers are put into the steel fiber feeding bin 2, concrete is put into the concrete feeding bin 3, the steel fibers fall on the conical surface of the dispersing structure 4 under the action of the four guide plates to be dispersed, the dispersed steel fibers enter the transition channel 5-5 in the transition bin 5 from the blanking channel, and the concrete put into the concrete feeding bin 3 enters the space outside the transition channel 5-5 of the transition bin 5.
The steel fibers enter the steel fiber directional channel 7-3 from the transition channel 5-5 under the action of self gravity, and as the discharge ends of the transition channel 5-5 are distributed in an array, the steel fibers flowing out are also distributed in an array, so that the steel fibers can be uniformly distributed in the concrete, the concrete in the transition bin 5 flows into the first inner cylinder 7-1 of the steel fiber directional mechanism 7 under the action of self gravity and flows into the space outside the steel fiber directional channel.
The energized first magnetic field coil 7-4 generates a magnetic field force under which the steel fibers in the steel fiber orientation channel 7-3 are rotated to a set direction.
Under the action of self gravity, the steel fiber and the concrete enter the second inner cylinder 8-2 of the mixing mechanism 8 to be mixed simultaneously, so that steel fiber concrete is formed, and flows out through the diversion trench 11 to be poured.
Because the steel fibers flowing out of the steel fiber directional channels are distributed along the rectangular array, the steel fibers can be uniformly dispersed in the concrete, and the performance of the steel fiber concrete is ensured.
While the foregoing description of the embodiments of the present invention has been presented in conjunction with the drawings, it should be understood that it is not intended to limit the scope of the invention, but rather, it is intended to cover all modifications or variations within the scope of the invention as defined by the claims of the present invention.
Claims (5)
1. A steel fiber concrete forming apparatus, comprising:
a steel fiber feeding bin;
the dispersion mechanism is positioned below the steel fiber feeding bin and is of a conical structure, the tip end of the dispersion mechanism faces the steel fiber feeding bin, the included angle between the bus and the horizontal plane of the dispersion mechanism is the natural repose angle of the steel fiber, the conical structure is provided with a plurality of blanking channels, and the size of the blanking channels gradually increases along the direction from the center of the dispersion mechanism to the edge;
the dispersing mechanism comprises a cylindrical part and a conical part fixed on the top surface of the cylindrical part, and correspondingly, the blanking channel comprises a first blanking part positioned in the conical part and a second blanking part positioned in the cylindrical part, the first blanking part is of a cylindrical structure, the second blanking part is of a tapered structure, and the end part with larger area is connected to the first blanking part;
and (3) a transition bin: the concrete feeding device is arranged below the dispersing mechanism, a transition channel communicated with the blanking channel is arranged in the dispersing mechanism, the dispersing mechanism is also communicated with the concrete feeding bin, and the discharging ends of the transition channels are arranged along the array;
the feeding end of the directional mixing mechanism is connected with the discharging end of the corner bin and is provided with a steel fiber directional component;
the directional mixing mechanism is obliquely arranged downwards and comprises a steel fiber directional mechanism and a mixing mechanism which are sequentially connected, the steel fiber directional mechanism is provided with a first steel fiber directional component and is used for directional steel fibers, and the mixing mechanism is used for mixing the steel fibers with concrete;
the steel fiber orientation mechanism comprises a first outer cylinder and a first inner cylinder positioned in the first outer cylinder, a steel fiber orientation channel is arranged in the first inner cylinder, a feeding end of the steel fiber orientation channel is communicated with a discharging end of a steel fiber transition channel, the feeding end of the first inner cylinder is connected with a discharging end of a transition bin, the discharging ends of the first inner cylinder and the steel fiber orientation channel are both connected with the mixing mechanism, and a first magnetic field coil is arranged in a space between the first outer cylinder and the first inner cylinder;
the mixing mechanism comprises a second outer cylinder and a second inner cylinder, the second outer cylinder is fixed with the first outer cylinder, the second inner cylinder is fixed with the first inner cylinder, and a second magnetic field coil is arranged in a space between the second outer cylinder and the second inner cylinder.
2. A steel fibre concrete forming apparatus as claimed in claim 1 wherein the angle of the directional mixing means to the horizontal is 30 ° -60 °.
3. A steel fibre concrete forming apparatus as claimed in claim 1 wherein the steel fibre orientation channels are square in cross section with sides longer than the length of the steel fibres.
4. The steel fiber reinforced concrete molding apparatus as recited in claim 1, wherein a vibrator is further provided between the second outer cylinder and the second inner cylinder.
5. A steel fibre concrete forming apparatus as claimed in claim 1 wherein a reinforcing mesh is provided at the feed opening of the concrete feed bin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210519811.7A CN114905629B (en) | 2022-05-13 | 2022-05-13 | Steel fiber concrete forming device |
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| CN117207317A (en) * | 2022-09-20 | 2023-12-12 | 三峡大学 | Magnetic fiber positioning method for magnetic fiber concrete |
| 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 |
| CN118461912A (en) * | 2024-07-09 | 2024-08-09 | 广州市市政工程试验检测有限公司 | UHPC cast-in-situ construction control steel fiber directional distribution method and equipment |
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| KR200295214Y1 (en) * | 2002-07-24 | 2002-11-18 | 금강와이어메쉬산업 주식회사 | Apparatus for dispersed feeding of steel fiber for reinforced concrete |
| CN103625800A (en) * | 2013-12-03 | 2014-03-12 | 中联重科股份有限公司 | Segregation-preventing device for mixed materials and material bin comprising same |
| CN106378857A (en) * | 2016-11-08 | 2017-02-08 | 哈尔滨工业大学 | Molding device for directional steel fiber reinforced ultrahigh-performance concrete and application method of molding device |
| CN208121509U (en) * | 2018-03-22 | 2018-11-20 | 中交西安筑路机械有限公司 | A kind of asphalt mixing plant storage bin cone bucket |
| CN210415010U (en) * | 2019-05-22 | 2020-04-28 | 成都建工预筑科技有限公司 | Steel fiber adding device of concrete mixer |
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| KR102175572B1 (en) * | 2013-12-16 | 2020-11-06 | 주식회사 포스코 | Feeding apparatus of amophous steel fiber |
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| KR200295214Y1 (en) * | 2002-07-24 | 2002-11-18 | 금강와이어메쉬산업 주식회사 | Apparatus for dispersed feeding of steel fiber for reinforced concrete |
| CN103625800A (en) * | 2013-12-03 | 2014-03-12 | 中联重科股份有限公司 | Segregation-preventing device for mixed materials and material bin comprising same |
| CN106378857A (en) * | 2016-11-08 | 2017-02-08 | 哈尔滨工业大学 | Molding device for directional steel fiber reinforced ultrahigh-performance concrete and application method of molding device |
| CN208121509U (en) * | 2018-03-22 | 2018-11-20 | 中交西安筑路机械有限公司 | A kind of asphalt mixing plant storage bin cone bucket |
| CN210415010U (en) * | 2019-05-22 | 2020-04-28 | 成都建工预筑科技有限公司 | Steel fiber adding device of concrete mixer |
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