CN110774413A

CN110774413A - Steel fiber material distributor for concrete

Info

Publication number: CN110774413A
Application number: CN201911076554.9A
Authority: CN
Inventors: 张军伟; 李师节; 彭鸿健; 郭亮
Original assignee: Southwest Petroleum University
Current assignee: Southwest Petroleum University
Priority date: 2019-11-06
Filing date: 2019-11-06
Publication date: 2020-02-11
Anticipated expiration: 2039-11-06
Also published as: CN110774413B

Abstract

The invention discloses a steel fiber material distributor for concrete, which comprises a bracket, wherein a feed hopper is arranged on the side wall of a bin, a plurality of vibrating screening rollers are rotatably arranged in the bin, a conveyor belt I is positioned right below the bin, a material distributing barrel is arranged on the side edge of the bracket, a feed inlet is over against the discharge end of the conveyor belt I, a discharge outlet is over against the feed end of a conveyor belt II, a screening barrel with an open bottom is arranged on the bracket, the screening barrel is positioned above the conveyor belt, and the upper end of the screening barrel is over against the discharge end of the conveyor belt II; the fixed fan blades and the movable fan blades divide the material separating cylinder into an adjusting cavity and a material collecting groove, the movable fan blades are respectively arranged at quartering points of the outer circumferential wall of the central shaft, a partition plate is arranged at the outer side end of each fixed fan blade, and the partition plates separate the adjusting cavity from the inner wall of the material separating cylinder. The invention can realize the sequential switching of the working procedures of dispersing the steel fibers to gathering the steel fibers so as to adjust the feeding density of the steel fibers and meet the requirements of different feeding amounts of the steel fibers.

Description

Steel fiber material distributor for concrete

Technical Field

The invention relates to the technical field of fiber concrete, in particular to a steel fiber distributing machine for concrete.

Background

Since the advent of cement, ordinary concrete prepared from cement, aggregate and water has become one of the most widely used building materials through one hundred years of development; the composite material has the advantages of easy molding, high compressive strength, good durability, low price and the like, is widely applied to the fields of tunnels, bridges, roads, harbors, underground structures and the like, and is an irreplaceable building material for engineering construction. But the inherent defects of poor crack resistance, low tensile strength, small ultimate elongation and the like often limit the full play of the advantages of the steel. Generally, the tensile strength of common concrete is only 1/10-1/20 of the compressive strength of the common concrete, so that the common concrete has poor toughness and larger brittleness, and the brittleness is increased along with the increase of the strength grade of the concrete.

In order to improve the breaking strength, cracking resistance and toughness of concrete, researchers at home and abroad usually adopt a method of mixing different types of fibers and different sizes to improve the toughness and ductility. The fiber concrete is used as a high-performance concrete building material and is widely applied in the field of engineering construction in China, wherein the fiber concrete is most widely made of steel fibers. The preparation of steel fiber concrete is generally based on the procedures of screening steel fibers with proper materials and proper length-diameter ratio, uniformly dispersing the fibers in concrete by dry mixing of a forced mixer, adding water for wet mixing, and finally tamping by a vibration device. The steel fiber dispersion mainly comprises two methods of manual dispersion and mechanical dispersion: manual dispersion is usually the small-scale preparation of fiber concrete in laboratories, and mechanical dispersion is used for large-scale concrete engineering construction; although the scale for preparing the steel fiber concrete on a laboratory scale is small, the manual dispersion is still low in efficiency, poor in effect and time-consuming and labor-consuming. The mechanical dispersion mode has high operation efficiency, however, the existing common dispersing device usually uses the rotation of the dispersing blade in a dispersion machine or a stirrer as the basic principle to disperse the fibers, and the dispersing blade is quickly impacted with the steel fibers during dispersion, so that the steel fibers are easily lost, the steel fibers are bent and agglomerated to further influence the steel fibers to play the due role, and the purpose of enhancing the toughness and tensile strength of concrete cannot be achieved.

At present, the existing steel fiber dispersing machine can only disperse the agglomerated unordered steel fibers into small agglomerated ordered or single dispersed steel fibers, cannot meet the dispersing requirements of different densities according to the feeding density requirements of the steel fibers, and cannot be uniformly put into concrete.

Disclosure of Invention

The invention aims to provide a steel fiber distributing machine for concrete, which solves the problem that a common dispersing machine cannot disperse steel fibers according to density requirements, and can directly and uniformly disperse the dispersed steel fibers into the concrete according to the density requirements.

The invention is realized by the following technical scheme:

a steel fiber material distributor for concrete comprises a support, wherein a bin, a conveyor belt I, a conveyor belt II and a conveyor belt are sequentially arranged on the support from top to bottom at intervals, a feed hopper communicated with the interior of the bin is arranged on the side wall of the bin, the upper end and the lower end of the bin are both open, a plurality of vibrating screening rollers are rotatably arranged in the bin, the conveyor belt I is positioned under the bin, a material distribution barrel is arranged on the side edge of the support, a feed inlet and a discharge outlet are respectively formed in the outer circumferential wall of the material distribution barrel along the axis of the material distribution barrel, the feed inlet is over against the discharge end of the conveyor belt I, the discharge outlet is over against the feed end of the conveyor belt II, a screening barrel with an open bottom is arranged on the support, the screening barrel is positioned above the conveyor belt, and; the four adjusting cavities and the four collecting grooves are distributed in a staggered mode, the movable blades are arranged on quartering points of the outer circumferential wall of the central shaft respectively, arc-shaped partition plates are arranged at the outer side end of each fixed blade, and the partition plates separate the adjusting cavities from the inner wall of the material distributing cylinder.

In the existing steel fiber dispersing process, dispersing blades quickly impact steel fibers during dispersion, so that the steel fibers are easily lost, the steel fibers are bent to form lumps, and the strength of concrete cannot meet the construction standard; the existing steel fiber dispersing machine can only disperse the agglomerated disordered steel fibers into small agglomerated orderly or single dispersed steel fibers, cannot adapt to the dispersing requirements of different densities according to the feeding density requirements of the steel fibers, and cannot be uniformly put into concrete, namely, the traditional dispersing machine cannot meet the existing construction requirements in the preparation process of the fiber concrete; in view of the above, the applicant designs a steel fiber distributor, which sequentially switches between the processes of dispersing steel fibers and gathering steel fibers to adjust the feeding density of the steel fibers, and finally mixes the steel fibers with concrete to meet the requirements of different steel fiber feeding amounts;

during specific operation, the steel fibers which are agglomerated and disordered slide down to a storage bin through a feed hopper, a vibration screening roller starts to perform vibration screening on the steel fibers in the storage bin, so that the steel fibers are orderly unfolded from the agglomerated state in the storage bin to a conveyor belt I in parallel, and the continuously distributed steel fibers are distributed and taken out along with the distribution of a material collecting tank through a material distributing cylinder to be dispersed into a plurality of discrete small agglomerates; the steel fibers are separated into small groups of steel fibers which are distributed at equal intervals through the material collecting groove, the small groups of steel fibers are conveyed into the screening cylinder through the conveying belt II, the steel fibers which are separated into parallel strips are delivered onto the conveying belt through the screening cylinder, the conveying belt is loaded with stirred thin-layer concrete, the steel fibers are uniformly delivered into the thin-layer spread concrete with equal width, and then the dispersed distribution of the steel fibers is completed. Wherein, the conveying directions of the conveyor belt I and the conveyor belt II are opposite, the distributing cylinder is arranged between the discharge end of the conveyor belt I and the feed end of the conveyor belt II and can disperse the steel fibers continuously distributed on the conveyor belt I, namely, the feed inlet of the distributing cylinder is opposite to the discharge end of the conveyor belt I, the discharge outlet of the distributing cylinder is opposite to the feed end of the conveyor belt II, the cylinder part of the distributing cylinder keeps still in use, the central shaft drives four material collecting grooves and four adjusting cavities to rotate circumferentially, the outer sides of the adjusting cavities are sealed by partition plates to prevent the steel fibers from entering, when one material collecting groove collects the steel fibers, the material collecting groove rotates clockwise along with the central shaft to the discharge outlet, the placing positions of most of the steel fibers in the material collecting groove are parallel to the axis of the central shaft, and the adjusting cavities and the material collecting grooves are distributed in a staggered manner, the fibers continuously distributed on the conveyor belt I are dispersed into small steel fibers distributed at equal intervals, the small steel fibers begin to fall to the feeding end of the conveyor belt II under the action of gravity, and the conveyor belt II conveys the steel fibers into the screening cylinder, so that the steel fibers and the thin concrete on the conveyor belt are uniformly mixed, and the phenomenon that the steel fibers are locally piled on the thin concrete is prevented;

further, a plurality of shale shaker that set up side by side in the feed bin divide the roller to all adopt the smooth stainless steel material in surface to make, and the interaxial distance between two adjacent shale shaker divide the roller is the radial triple of shale shaker branch roller, this interval is less than minimum steel fibre length, can ensure that most steel fibre falls to conveyer belt I with perpendicular to direction of transfer's state on, put the orientation inconsistent with steel fibre in order to prevent that steel fibre center pin pivoted direction from getting into the collecting tank through the feed inlet when the collecting tank, reduce steel fibre and divide a feed cylinder or collecting tank to produce the collision damage and buckle and appear, the fracture, avoid the steel fibre influence to divide the normal rotation of feed cylinder simultaneously.

Four minor arc grooves are respectively formed in the outer circumferential walls of the two ends of the central shaft along the circumferential direction of the central shaft, a sliding block is arranged on the inner side end of each movable fan blade in each adjusting cavity, and the sliding blocks are matched with the minor arc grooves; and in same adjustment chamber, be equipped with curved fixed plate on the lateral wall of fixed flabellum, it has the arc hole to open on the fixed plate, and all is equipped with the cingulum on the both sides wall in arc hole, is equipped with the fly leaf on the lateral wall of activity flabellum, and it has the through-hole to open on the fly leaf, and the gangbar runs through-hole, arc hole backward in proper order and extends outward, and is equipped with the drive gear with the cingulum meshing on the gangbar the division board just opens the arc wall on the terminal surface of one end of activity flabellum, is equipped with guard plate, cardboard on the activity flabellum lateral wall, and under the initial condition, the arc wall is arranged in to the cardboard, and the guard plate contacts with the lateral wall of division board, rotates. Furthermore, the adjusting cavities and the material collecting grooves are distributed on the central shaft in a staggered manner, the outer sides of the material collecting grooves are open and correspond to the material inlet or the material outlet of the material distributing cylinder, and the outer sides of the adjusting cavities are closed; when the adjustable trough is used, the space occupation ratio of the adjusting cavity in the distributing cylinder can be adjusted according to the actual feeding amount of steel fibers required by thin concrete on the conveying belt; and when the capacity of the material collecting groove is reduced, the four linkage rods are rotated reversely.

The end part of the central shaft is sleeved with a follow-up cylinder, the inner circumferential wall at one end of the follow-up cylinder is provided with a bearing, the inner ring of the bearing is in contact with the outer wall of the central shaft, the inner circumferential wall at the other end of the follow-up cylinder is provided with an inner thread section, the outer wall of the central shaft is provided with an outer thread matched with the inner thread section, a space is reserved between the bearing and the inner thread section, and the linkage rod is connected with the end surface of the follow-up cylinder and is positioned. Furthermore, in order to realize the integrated design of the linkage rod and the central shaft, the end part of the central shaft is sleeved with a follow-up cylinder, and in an initial state, the inner thread section is not matched with the outer thread, the linkage rod penetrates through the through hole and the arc-shaped hole, meanwhile, the driving gear is not contacted with the toothed belt, the follow-up cylinder and each linkage rod are circularly moved along with the central shaft, when the size of the inner space of the adjusting cavity needs to be changed, the follow-up cylinder is rotated to move towards the direction close to the fixed fan blades along the axis of the central shaft until the driving gear is meshed with the toothed belt, the follow-up cylinder is continuously pushed until the inner thread section is matched with the external thread, after the distance between the movable fan blade and the fixed fan blade meets the requirement, the follow-up cylinder and the central shaft form a whole temporarily, relative displacement cannot be generated between the follow-up cylinder and the central shaft, the inner space of the adjusted adjusting cavity is ensured to be stable, and steel fibers can be conveniently thrown in. It should be noted that, leave the interval between the medial extremity of bearing and the internal thread section for possess sufficient axial length between follow-up section of thick bamboo and the center pin and realize the linkage or remove the linkage state, and can design into transparent plastics material with the end cover at branch feed cylinder both ends, with the steel fibre motion situation of convenient operating personnel real-time observation branch feed cylinder.

Each the both ends of shale shaker roller are equipped with the drive shaft, and rotate one in two drive shafts and set up on the inside wall of feed bin, and another drive shaft runs through behind the feed bin lateral wall and extends outward and be fixed with driven gear on its extension, still includes annular transmission cingulum, transmission cingulum constitutes a complete transmission return circuit with a plurality of driven gear, external drive equipment's output. Furthermore, the plurality of vibration screening rollers form a complete transmission loop through the transmission toothed belt, the plurality of driven gears and the output end of external driving equipment to realize linkage, namely, the rotation of the plurality of vibration screening rollers is kept synchronous, so that the steel fibers on the conveyor belt I are relatively uniformly distributed.

The inside cavity of shale shaker divides the roller, and it has the annular ring to open at the outer wall middle part of shale shaker divides the roller, is equipped with vibration sleeve at the outer wall cover of shale shaker divides the roller, and vibration sleeve's axial length is greater than the axial length of annular ring, and be equipped with the circular connecting plate with vibration sleeve isodiametric in vibration sleeve's middle part, all be fixed with vibrating motor on the both sides wall of connecting plate, and the axis of each vibrating motor output is perpendicular with the vibration sleeve axis, all is equipped with the eccentric wheel on each vibrating motor output. Furthermore, through the arrangement of the vibrating sleeve and the vibrating motor, the vibrating screening roller can perform independent axial vibration while performing circular motion, so that the steel fibers concentrated in the middle of the vibrating screening roller are conveniently dispersed towards the two ends of the vibrating screening roller, and the rotating directions of the vibrating screening rollers are uniformly set to rotate clockwise, so that the steel fibers are prevented from being lost, broken or bent in the screening process, the axial vibration independent of the vibrating screening roller is high-frequency low-amplitude vibration, and the interference of overlarge amplitude on screening is avoided; during specific work, the inside cavity of vibration screening roller, and it has the annular opening to open at vibration screening roller middle part, vibration sleeve cover is established at vibration screening roller outer wall and can be covered the annular opening completely, two synchronous working's vibrating motor fixes on the connecting plate on the inside middle section of vibration sleeve, install the eccentric wheel on the vibrating motor output, vibrating motor starts the back promptly and can drive connecting plate and vibration sleeve and produce reciprocating motion along the axial of vibration screening roller, ensure by the steel fibre of feeder hopper input can follow feed bin even transfer to on the conveyer belt I. Wherein, vibration sleeve's both ends terminal surface radius angle respectively, and the clearance between vibration screening roller outer wall and the vibration sleeve inner wall is little, and outer wall between them is all smooth, and in steel fibre can not enter into the clearance that both exist, can guarantee to maintain under the prerequisite of normal rotation at the vibration screening roller, vibration sleeve can normally carry out axial reciprocating motion.

The conveyer belt upper surface comprises a plurality of conveyer belts, and is equipped with the equal isometric partition triangular prism of distance with horizontal transfer between two adjacent conveyer belts, be equipped with a plurality of mutually independent screening chambeies in the screening section of thick bamboo, and each screening chamber corresponds with a conveyer belt each other. Further, the conveyer belt is divided into a plurality of conveyer belts, and the quantity of conveyer belt corresponds with the number of screening chamber, and on steel fibre on the conveyer belt II can enter into corresponding conveyer belt along different screening chamber, and be equipped with between two adjacent conveyer belts and separate the triangular prism to ensure that the steel fibre fixed point that moves down by the screening chamber falls into on the corresponding conveyer belt, carry the thin layer concrete that has stirred on the conveyer belt, steel fibre is evenly thrown in the thin layer of equal width flatly laid concrete.

The inner wall of the screening cavity is provided with a plurality of spherical bulges. Preferably, the screening cavity is in a quadrangular pyramid shape with a large upper part and a small lower part, a plurality of spherical protrusions are arranged on each inner wall of the screening cavity, openings at the upper end of the screening cavity receive the steel fibers conveyed by the conveyor belt, five screening cavities evenly divide the steel fibers into five groups, openings at the lower end of the screening cavities are opposite to the conveyor belt, the side length of the openings at the upper end of the screening cavities is slightly larger than the length of the steel fibers, and the spherical protrusions distributed in disorder on the surface of the inner wall of the screening cavity can enable the steel fibers to randomly collide with the spherical protrusions in the free falling process in the screening cylinder and to be randomly distributed in concrete of the conveyor belt below in different postures.

And two side walls of the feed hopper are provided with demagnetizers. As the preferred, all be equipped with the demagnetizer on the both sides wall of feeder hopper for steel fibre can carry out the demagnetization before getting into the feed bin, reduces the steel fibre and conglomerates the probability in dispersion process.

Compared with the prior art, the invention has the following advantages and beneficial effects:

1. according to the invention, after a material collecting groove collects full steel fibers, the material collecting groove rotates clockwise along with a central shaft to a discharge port, at the moment, the placing positions of most of the steel fibers in the material collecting groove are parallel to the axis of the central shaft, the adjusting cavities and the material collecting groove are distributed in a staggered manner, so that the fibers distributed continuously on a conveyor belt I are dispersed into small steel fibers distributed at equal intervals, the small steel fibers begin to fall onto the feeding end of a conveyor belt II under the action of gravity, the steel fibers are conveyed into a screening cylinder by the conveyor belt II, the uniform mixing of the steel fibers and thin concrete on the conveyor belt is ensured, and the occurrence of steel fiber bundle pile on the local part of the thin concrete is prevented;

2. according to the invention, the plurality of vibrating screening rollers arranged in parallel in the storage bin are all made of stainless steel materials with smooth surfaces, the axial distance between two adjacent vibrating screening rollers is three times of the radius of the vibrating screening rollers, and the distance is smaller than the minimum steel fiber length, so that most of steel fibers can be ensured to fall onto the conveyor belt I in a state of being vertical to the conveying direction, the rotating direction of a central shaft is prevented from being inconsistent with the placing direction of the steel fibers when the steel fibers enter the collecting tank through the feed inlet, the bending and the fracture of the steel fibers due to collision damage of the steel fibers and the material separating cylinder or the material collecting tank are reduced, and the influence of the steel fibers on the normal rotation of the material separating cylinder is avoided.

Drawings

The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the principles of the invention. In the drawings:

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the internal structure of a vibratory screening roller shaft;

FIG. 3 is a schematic illustration of the transmission of a plurality of vibratory screening rollers;

FIG. 4 is a cross-sectional view of the dispensing cartridge;

FIG. 5 is a schematic view of the combination of the fixed blade and the movable blade;

FIG. 6 is a schematic structural view of a follower cylinder;

FIG. 7 is a schematic structural view of a sieving drum;

fig. 8 is an enlarged view of fig. 5 at a.

Reference numbers and corresponding part names in the drawings:

1-silo, 2-vibrating screening roller, 201-driving shaft, 202-driving toothed belt, 203-vibrating sleeve, 204-vibrating motor, 205-annular hole, 206-eccentric wheel, 207-connecting plate, 208-driven gear, 3-feeding hopper, 4-conveying belt I, 5-separating barrel, 500-central shaft, 501-collecting groove, 502-fixed fan blade, 503-fixed plate, 504-arc hole, 505-feeding hole, 506-discharging hole, 507-inferior arc groove, 508-movable plate, 509-movable fan blade, 510-separating plate, 6-conveying belt II, 7-screening barrel, 701-spherical bulge, 8-separating triangular column, 9-conveying belt, 10-driving wheel, 11-support, 12-a demagnetizer, 13-a follow-up cylinder, 14-a bearing, 15-an internal thread section, 16-an external thread, 17-a linkage rod, 18-a driving gear, 19-a protection plate, 20-an arc groove and 21-a clamping plate.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to examples and accompanying drawings, and the exemplary embodiments and descriptions thereof are only used for explaining the present invention and are not meant to limit the present invention.

Example 1

As shown in fig. 1 to 7, the present embodiment includes a support 11, a bin 1, a conveyor belt i 4, a conveyor belt ii 6, and a conveyor belt 9 are sequentially disposed on the support 11 from top to bottom at intervals, a feed hopper 3 communicated with the inside of the bin 1 is disposed on a side wall of the bin 1, an upper end and a lower end of the bin 1 are both open, a plurality of vibrating screening rollers 2 are rotatably disposed inside the bin 1, the conveyor belt i 4 is located right below the bin 1, a material separating cylinder 5 is disposed on a side edge of the support 11, a feed inlet 505 and a discharge outlet 506 are respectively disposed on an outer circumferential wall of the material separating cylinder 5 along an axis of the material separating cylinder 5, the feed inlet 505 is right aligned to a discharge end of the conveyor belt i 4, the discharge outlet 506 is right aligned to a feed end of the conveyor belt ii 6, a screening cylinder 7 with an open bottom is disposed on the support 11, the screening cylinder; the inner wall of the material separating cylinder 5 is provided with a central shaft 500, the outer circumferential wall of the material separating cylinder is provided with four fixed fan blades 502 and four movable fan blades 509 along the axial direction of the central shaft 500, the inner space of the material separating cylinder 5 is divided into four adjusting cavities and four material collecting grooves 501 by the four fixed fan blades 502 and the four movable fan blades 509, the four adjusting cavities and the four material collecting grooves 501 are distributed in a staggered mode, the movable fan blades 509 are respectively arranged on quartering points of the outer circumferential wall of the central shaft 500, the outer side end of each fixed fan blade 502 is provided with an arc-shaped partition plate 510, and the adjusting cavities are separated from the inner wall of the material separating.

In the embodiment, the agglomerated disordered steel fibers slide down to the bin 1 through the feed hopper 3, the vibration screening roller 2 starts to vibrate the steel fibers in the bin 1, so that the agglomerated steel fibers in the bin 1 are unfolded orderly in parallel from the disorder to the conveyor belt I4, and the continuously distributed steel fibers are dispersed into a plurality of discrete small agglomerates along with the material distribution and taking of the material collecting tank 501 through the material distributing cylinder 5; the steel fibers are separated into small groups of steel fibers which are distributed at equal intervals through the material collecting groove 501, the small groups of steel fibers are conveyed into the screening cylinder 7 through the conveying belt II 6, the steel fibers which are separated into parallel strips are conveyed onto the conveying belt 9 through the screening cylinder 7, the well-stirred thin-layer concrete is loaded on the conveying belt 9, the steel fibers are uniformly distributed in the equal-width thin-layer flat concrete, and then the dispersed distribution of the steel fibers is completed. Wherein, the conveying directions of the conveyor belt I4 and the conveyor belt II 6 are opposite, the material distributing cylinder 5 is arranged between the discharging end of the conveyor belt I4 and the feeding end of the conveyor belt II 6, the material distributing cylinder 5 can disperse the steel fibers continuously distributed on the conveyor belt I4, namely, the feeding port 505 of the material distributing cylinder 5 is right opposite to the discharging end of the conveyor belt I4, the discharging port 506 of the material distributing cylinder 5 is right opposite to the feeding end of the conveyor belt II 6, the cylinder part of the material distributing cylinder 5 is kept static in the using process, the central shaft 500 drives the four material collecting grooves 501 and the four adjusting cavities to circumferentially rotate, the outer sides of the adjusting cavities are sealed by the partition plates 510 to prevent the steel fibers from entering, when one material collecting groove 501 collects the steel fibers, the material collecting groove rotates clockwise along with the central shaft 500 to the discharging port 506, at the moment, the placing positions of most of the steel fibers in the material collecting groove 501 are parallel to the axis, fibers distributed on the conveyor belt I4 in a continuous steel mode are scattered into small steel fibers distributed at equal intervals, the small steel fibers begin to fall onto the feeding end of the conveyor belt II 6 under the action of gravity, the steel fibers are conveyed into the screening drum 7 through the conveyor belt II 6, the steel fibers are uniformly mixed with thin concrete on the conveyor belt 9, and the situation that the steel fibers are locally piled on the thin concrete is avoided;

further, a plurality of shale shaker that set up side by side in feed bin 1 divides roller 2 all to adopt the smooth stainless steel material in surface to make, and the interaxial distance between two adjacent shale shaker divide roller 2 is the radial triple of shale shaker divide roller 2, this interval is less than minimum steel fibre length, can ensure most steel fibre and fall to conveyer belt I4 with perpendicular to direction of transfer's state on, in order to prevent that steel fibre from putting the orientation inconsistent with steel fibre in the central shaft 500 pivoted direction when getting into collecting tank 501 through feed inlet 505, reduce steel fibre and divide feed cylinder 5 or collecting tank 501 to produce collision damage and appear buckling, the fracture, avoid steel fibre to influence the normal rotation that divides feed cylinder 5 simultaneously.

In the embodiment, two ends of each vibrating screening roller 2 are provided with driving shafts 201, one of the two driving shafts 201 is rotatably arranged on the inner side wall of the storage bin 1, the other driving shaft 201 penetrates through the side wall of the storage bin 1 and extends outwards, a driven gear 208 is fixed on the extending section of the other driving shaft 201, the vibrating screening roller further comprises an annular transmission toothed belt 202, and the transmission toothed belt 202, the plurality of driven gears 208 and the output end of external driving equipment form a complete transmission loop. The conveyer belt 9 upper surface comprises a plurality of conveyer belts, and is equipped with the partition triangular prism 8 isometric with horizontal transfer distance between two adjacent conveyer belts, be equipped with a plurality of mutually independent screening chambeies in the screening section of thick bamboo 7, and each screening chamber corresponds with a conveyer belt each other. The plurality of vibrating screening rollers 2 form a complete transmission loop through the transmission toothed belt 202, the plurality of driven gears 208 and the output end of external driving equipment to realize linkage, namely, the rotation of the plurality of vibrating screening rollers 2 is ensured to be kept synchronous, so that the steel fibers on the conveyor belt I4 are ensured to be distributed relatively uniformly. Conveyer belt 9 is separated into a plurality of conveyer belts, and a conveying axle of a plurality of conveyer belts sharing, be equipped with a plurality of drive wheels 10 that match with conveyer belt on the conveying axle, ensure that a plurality of conveyer belts's operation is synchronous, the quantity of conveyer belt corresponds with the number in screening chamber, steel fibre on conveyer belt II 6 can enter into on the corresponding conveyer belt along different screening chambers promptly, and be equipped with between two adjacent conveyer belts and separate triangular prism 8, fall into on the corresponding conveyer belt in order to ensure by the steel fibre fixed point that the screening chamber moved down, carry the thin layer concrete that has stirred on the conveyer belt, steel fibre is thrown evenly in equal width thin layer tiled concrete.

Preferably, the screening cavity is in a quadrangular pyramid shape with a large upper part and a small lower part, each inner wall of the screening cavity is provided with a plurality of spherical protrusions, the upper end opening of the screening cavity receives the steel fibers conveyed by the conveyor belt in rows, the five screening cavities evenly divide the steel fibers into five groups, the lower end opening of each screening cavity faces the conveyor belt, the side length of the upper end opening of each screening cavity is slightly larger than the length of the steel fibers, and the surface of the inner wall of each screening cavity is provided with the spherical protrusions 701 which are distributed in a disordered manner, so that the steel fibers can randomly collide with the spherical protrusions 701 in the free falling process in the screening cylinder 7 and are randomly distributed in concrete of the conveyor belt below in different postures.

Preferably, the two side walls of the feed hopper 3 are respectively provided with the demagnetizer 12, so that the steel fibers can be demagnetized before entering the feed hopper 1, magnetism generated by factors such as friction of the steel fibers is eliminated, the steel fibers are prevented from being adsorbed by the positions of the feed hopper 1, the vibrating screening roller 2 shaft, the feed hopper 3, the material separating barrel 5, the material separating barrel and the like due to magnetism, and the dispersion effect of the steel fibers is further ensured.

Example 2

As shown in fig. 1 to 8, in this embodiment, based on embodiment 1, four minor arc grooves 507 are respectively formed on the outer circumferential walls of the two ends of the central shaft 500 along the circumferential direction thereof, and a sliding block is arranged on the inner side end of the movable fan blade 509 in each of the adjustment cavities, and the sliding block is matched with the minor arc grooves 507; in the same adjusting cavity, an arc-shaped fixing plate 503 is arranged on the side wall of the fixed fan blade 502, an arc-shaped hole 504 is formed in the fixing plate 503, toothed belts are arranged on two side walls of the arc-shaped hole 504, a movable plate 508 is arranged on the side wall of the movable fan blade 509, a through hole is formed in the movable plate 508, the linkage rod 17 sequentially penetrates through the through hole and the arc-shaped hole 504 and then extends outwards, a driving gear 18 meshed with the toothed belts is arranged on the linkage rod 17, an arc-shaped groove 20 is formed in the end face, opposite to the movable fan blade 509, of the partition plate 510, a protection plate 19 and a clamping plate 21 are arranged on the side wall of the movable fan blade 509, the clamping plate 21 is arranged in the arc-shaped groove 20 in an initial state, the protection plate 19 is in contact with the outer side wall of the partition plate 510, the linkage rod 17 is rotated; the end part of the central shaft 500 is sleeved with a follow-up cylinder 13, the inner circumferential wall at one end of the follow-up cylinder 13 is provided with a bearing 14, the inner ring of the bearing 14 is in contact with the outer wall of the central shaft 500, the inner circumferential wall at the other end of the follow-up cylinder 13 is provided with an internal thread section 15, the outer wall of the central shaft 500 is provided with an external thread 16 matched with the internal thread section 15, a space is reserved between the bearing 14 and the internal thread section 15, and the linkage rod 17 is connected with the end surface of the follow-up cylinder 13 and is positioned at.

The adjusting cavities and the material collecting grooves 501 are distributed on the central shaft 500 in a staggered manner, the outer sides of the material collecting grooves 501 are open and correspond to the feeding hole 505 or the discharging hole 506 of the material separating cylinder 5, and the outer sides of the adjusting cavities are closed; when in use, the space proportion of the adjusting cavity in the material distributing cylinder 5 can be adjusted according to the actual feeding amount of the steel fiber required by the thin-layer concrete on the conveyer belt 9, the fixed fan blades 502 are fixedly connected with the outer wall of the central shaft 500, the inner side ends of the movable fan blades 509 are provided with sliding blocks matched with the minor arc grooves 507, the arc length of the minor arc grooves 507 is the maximum displacement of the sliding blocks, when the capacity of the material collecting groove 501 needs to be increased, the movable fan blades 509 and the fixed fan blades 502 which are positioned in the same adjusting cavity are connected through the connection between the fixed plate 503 and the movable plate 508, the four linkage rods 17 are adjusted in a rotating mode, the driving gear 18 is meshed with the toothed belt in the arc-shaped hole 504, the movable plate 508 is enabled to approach towards the fixed plate 503, that is, the internal space of the adjusting cavity is reduced, and the internal space of the collecting groove 501 is increased, so as to increase the feeding amount of the steel fibers in a single feeding process; and when the capacity of the material collecting groove 501 is reduced, the four linkage rods 17 are rotated reversely. Wherein, when the capacity of groove 501 that gathers materials changes, through keeping in contact all the time between cardboard 21 and the arc wall 20, guard plate 19 and division board 510 outer wall contact simultaneously ensure to keep keeping completely between the inner wall of adjustment chamber and minute feed cylinder 5 to prevent that steel fibre from entering into in the clearance between minute feed cylinder 5 and division board 510, and it needs to point out that the thickness of guard plate 19 is thinner relatively, can not produce the interference to the rotation of adjustment chamber and groove 501 that gathers materials.

In this embodiment, in order to realize the integrated design of the linkage rod 17 and the central shaft 500, in the technical scheme, the end of the central shaft 500 is sleeved with the follower cylinder 13, in an initial state, the internal thread section 15 is not matched with the external thread 16, the linkage rod 17 penetrates through the through hole and the arc-shaped hole 504, meanwhile, the drive gear 18 is not in contact with the toothed belt, the follower cylinder 13 and each linkage rod 17 perform circular motion along with the central shaft 500, when the size of the internal space of the cavity needs to be changed and adjusted, the follower cylinder 13 is rotated to move towards the direction close to the fixed fan blade 502 along the axis of the central shaft 500 until the drive gear 18 is meshed with the toothed belt, the follower cylinder 13 is continuously pushed until the internal thread section 15 is matched with the external thread 16, after the distance between the movable fan blade 509 and the fixed fan blade 502 meets the requirement, the follower cylinder 13 and the central, the internal space of the adjusted adjusting cavity is kept stable, and the steel fiber is conveniently put in. It should be noted that, a space is left between the inner end of the bearing 14 and the internal thread section 15, so that the following cylinder 13 and the central shaft 500 have a sufficient axial length to realize the linkage or the linkage release state, and the end covers at the two ends of the material separating cylinder 5 can be designed to be made of transparent plastic material, so as to facilitate the operator to observe the movement condition of the steel fibers of the material separating cylinder 5 in real time.

Example 3

As shown in fig. 1-2, in the present embodiment, the interior of the vibration screening roller 2 is hollow, an annular hole 205 is formed in the middle of the outer wall of the vibration screening roller 2, a vibration sleeve 203 is sleeved on the outer wall of the vibration screening roller 2, the axial length of the vibration sleeve 203 is greater than the axial length of the annular hole 205, a circular connecting plate 207 having the same diameter as that of the vibration sleeve 203 is arranged in the middle of the vibration sleeve 203, vibration motors 204 are fixed on two side walls of the connecting plate 207, the axis of the output end of each vibration motor 204 is perpendicular to the axis of the vibration sleeve 203, and an eccentric wheel 206 is arranged at the output end of each vibration motor 204.

In the technical scheme, the vibrating sleeve 203 and the vibrating motor 204 are arranged, so that the vibrating screening roller 2 can perform independent axial vibration while performing circular motion, steel fibers concentrated in the middle of the vibrating screening roller 2 are conveniently dispersed towards two ends of the vibrating screening roller, the rotating directions of the vibrating screening rollers 2 are uniformly set to rotate clockwise, the condition that the steel fibers are lost, broken or bent in the screening process is avoided, the axial vibration independent of the vibrating screening roller 2 is high-frequency low-amplitude vibration, and the interference of overlarge amplitude on screening is avoided; during specific work, the inside of the vibration screening roller 2 is hollow, the middle of the vibration screening roller 2 is provided with an annular hole 205, the vibration sleeve 203 is sleeved on the outer wall of the vibration screening roller 2 and can completely cover the annular hole 205, two vibration motors 204 which synchronously work are fixed on a connecting plate 207 on the inner middle section of the vibration sleeve 203, an eccentric wheel 206 is installed at the output end of the vibration motor 204, namely, the vibration motors 204 can drive the connecting plate 207 and the vibration sleeve 203 to generate reciprocating motion along the axial direction of the vibration screening roller 2 after being started, and it is ensured that steel fibers thrown in by the feed hopper 3 can be uniformly conveyed to a conveyor belt I4 along the feed bin 1.

Wherein, the both ends terminal surface of vibration sleeve 203 fillets respectively, and the clearance between 2 outer walls of vibration screening roller and the vibration sleeve 203 inner wall is little, and outer wall between them is all smooth, and in steel fibre can not enter into the clearance that both exist, can guarantee to maintain under the prerequisite of normal rotation at vibration screening roller 2, vibration sleeve 203 can normally carry out axial reciprocating motion.

The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are merely exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims

1. The utility model provides a steel fibre cloth machine for concrete, includes support (11), interval set gradually feed bin (1), conveyer belt I (4), conveyer belt II (6) and conveyer belt (9) from top to bottom on support (11) be equipped with on the lateral wall of feed bin (1) with feeder hopper (3) of its inside intercommunication, its characterized in that: the upper end and the lower end of the bin (1) are both open, a plurality of vibrating screening rollers (2) are rotatably arranged in the bin (1), the conveyor belt I (4) is positioned under the bin (1), the side edge of the support (11) is provided with the material separating barrel (5), a feed inlet (505) and a discharge outlet (506) are respectively formed in the outer circumferential wall of the material separating barrel (5) along the axis of the material separating barrel, the feed inlet (505) is over against the discharge end of the conveyor belt I (4), the discharge outlet (506) is over against the feed end of the conveyor belt II (6), the support (11) is provided with the screening barrel (7) with an open bottom, the screening barrel (7) is positioned above the conveyor belt (9), and the upper end of the screening barrel (7) is over against the discharge end of the conveyor belt II (6; be equipped with center pin (500) in minute feed cylinder (5), be equipped with four fixed flabellum (502) and four activity flabellum (509) on its outer circumference wall along the axial of center pin (500), four fixed flabellum (502) and four activity flabellum (509) will divide the inner space of minute feed cylinder (5) to divide into four adjustment chambeies and four collecting groove (501), four adjustment chambeies and four collecting groove (501) staggered distribution, be equipped with activity flabellum (509) respectively on the quartering point of center pin (500) outer circumference wall, and all be equipped with curved division board (510) on the outside end of each fixed flabellum (502), division board (510) will adjust the chamber and keep apart with the inner wall that divides feed cylinder (5).

2. A steel fibre distributor for concrete according to claim 1, characterised in that: four inferior arc grooves (507) are respectively formed in the outer circumferential walls of the two ends of the central shaft (500) along the circumferential direction, a sliding block is arranged at the inner side end of a movable fan blade (509) in each adjusting cavity, and the sliding blocks are matched with the inferior arc grooves (507); in the same adjusting cavity, an arc-shaped fixed plate (503) is arranged on the side wall of the fixed fan blade (502), an arc-shaped hole (504) is formed in the fixed plate (503), toothed belts are arranged on two side walls of the arc-shaped hole (504), a movable plate (508) is arranged on the side wall of the movable fan blade (509), a through hole is formed in the movable plate (508), a linkage rod (17) sequentially penetrates through the through hole and the arc-shaped hole (504) to extend outwards, a driving gear (18) meshed with the toothed belts is arranged on the linkage rod (17), an arc-shaped groove (20) is formed in the end face, right opposite to the movable fan blade (509), of the partition plate (510), a protection plate (19) and a clamping plate (21) are arranged on the side wall of the movable fan blade (509), the clamping plate (21) is arranged in the arc-shaped groove (20) in an initial state, the protection plate (19) is in, after the driving gear (18) is matched with the toothed belt, the protective plate (19) and the clamping plate (21) both move towards the direction close to the fixed fan blade (509).

3. A steel fibre distributor for concrete according to claim 2, characterised in that: the end part of the central shaft (500) is sleeved with a follow-up cylinder (13), a bearing (14) is arranged on the inner circumferential wall of one end of the follow-up cylinder (13), the inner ring of the bearing (14) is in contact with the outer wall of the central shaft (500), an internal thread section (15) is arranged on the inner circumferential wall of the other end of the follow-up cylinder (13), an external thread (16) matched with the internal thread section (15) is arranged on the outer wall of the central shaft (500), a space is reserved between the bearing (14) and the internal thread section (15), and the linkage rod (17) is connected with the end face of the follow-up cylinder (13) and is positioned at the same side as.

4. A steel fibre distributor for concrete according to claim 1, characterised in that: the two ends of each vibrating screening roller (2) are provided with driving shafts (201), one of the two driving shafts (201) is rotatably arranged on the inner side wall of the storage bin (1), the other driving shaft (201) penetrates through the side wall of the storage bin (1) and extends outwards, a driven gear (208) is fixed on the extending section of the other driving shaft, the vibrating screening roller further comprises an annular transmission toothed belt (202), and the transmission toothed belt (202), the driven gears (208) and the output end of external driving equipment form a complete transmission loop.

5. A steel fibre distributor for concrete according to claim 4, characterized in that: the inside cavity of shale shaker screening roller (2), and it has annular hole (205) to open at the outer wall middle part of shale shaker screening roller (2), and the outer wall cover of shale shaker screening roller (2) is equipped with vibration sleeve (203), and the axial length of vibration sleeve (203) is greater than the axial length of annular hole (205), and be equipped with circular connecting plate (207) that are equant with vibration sleeve (203) in the middle part of vibration sleeve (203), all be fixed with vibrating motor (204) on the both sides wall of connecting plate (207), and the axis of each vibrating motor (204) output is perpendicular with vibration sleeve (203) axis, all is equipped with eccentric wheel (206) on each vibrating motor (204) output.

6. A steel fibre distributor for concrete according to claim 1, characterised in that: conveyer belt (9) upper surface comprises a plurality of conveyer belts, and is equipped with between two adjacent conveyer belts and separates triangular prism (8) isometric with horizontal transfer distance, be equipped with a plurality of mutually independent screening chambeies in screening section of thick bamboo (7), and each screening chamber corresponds with a conveyer belt each other.

7. A steel fibre distributor for concrete according to claim 6, characterized in that: a plurality of spherical protrusions (701) are arranged on the inner wall of the screening cavity.

8. A steel fibre distributor for concrete according to any one of claims 1 to 7, characterised in that: two side walls of the feed hopper (3) are provided with demagnetizers (12).