A precise mixing device for steel fiber, hybrid fiber and concrete

Abstract

The utility model discloses a precise mixing device for steel fiber, mixed fiber and concrete, comprising a mixing station, a steel fiber feeding device and a mixed fiber feeding device. The steel fiber feeding device adds a quantitative bulk steel fiber row into the mixing station through a first conveyor belt, and the mixed fiber feeding device adds a quantitative bulk mixed fiber into the mixing station through a second conveyor belt; an external transmission device is arranged at the bottom of the mixing station, and the external transmission device conveys the mixture of concrete and mixed fiber to the outside. The device can accurately mix the mixed fiber and concrete in a specified proportion, can fully separate the fiber, improve the uniformity of mixing with concrete, ensure the performance consistency and yield rate of the subsequent processed products, and has a good application prospect.

Description

Technical Field

[0001] The utility model relates to the technical field of hybrid fiber and concrete mixing equipment, in particular to a precise mixing equipment for steel fiber, hybrid fiber and concrete. Background Art

[0002] By adding a certain proportion of one or more fibers such as steel fiber and plastic fiber to concrete, concrete products with different compressive strength, bending strength and toughness can be obtained. For example, when making concrete sleepers on railways, a certain amount of plastic mixed fiber and steel fiber will be added to the concrete to improve the structural performance of the sleepers. However, how to ensure the precise ratio of concrete and mixed fiber and how to make the mixed fiber and concrete evenly mixed are currently difficult problems in the industry. Moreover, during the transportation of concrete, the adhesion of concrete on the belt is more serious, and it needs to be cleaned manually or with a high-pressure water gun. This method is usually carried out after the transportation is completed. When it is used for a long time, the scattered concrete has been solidified on the belt, which is difficult to clean.

[0003] Traditional mixed fiber processing methods mostly rely on manual sorting, weighing, and adding of different fibers, making the entire process cumbersome, time-consuming, and labor-intensive. Existing methods using mechanical equipment also mostly involve dispersing steel fibers and mixed fibers separately, and then adding them manually or only mixing steel fibers and concrete in a certain ratio, which makes it difficult to disperse the fibers. The utility model patent with application number 202311020731.8 discloses a steel fiber quantitative device, including a frame, a silo, a vibrating feeding device, a weighing bucket, and a control terminal. The silo and the vibrating feeding device are both arranged on the frame, and the silo is provided with a discharge port. The vibrating feeding device plays a role of vibrating and conveying the steel fiber; a weighing bucket is provided at the end of the vibrating feeding device, and a discharge door is provided on the weighing bucket. The weighing bucket is provided with a weighing sensor, and the weighing bucket plays a role of quantitative feeding of the steel fiber through the weighing sensor; the control terminal controls the start and stop of the vibrating feeding device, and the control terminal controls the feeding of the weighing bucket, which can make the steel fiber vibrate and divide the material multiple times, so that the steel fiber can be effectively dispersed, and can also be fed in a fixed manner. However, although the device vibrates multiple times, it cannot disperse all the steel fibers, and the weighing accuracy of the weighing method during the conveying process is relatively poor. In addition, due to the influence of vibration on the weighing, it cannot guarantee that a fixed amount of steel fibers can be accurately weighed each time, and the accuracy of the mixing ratio cannot be guaranteed. Utility Model Content

[0004] The utility model aims to provide a precise mixing device for steel fiber, mixed fiber and concrete, which can accurately mix the mixed fiber and concrete in a specified ratio, can fully separate the fibers, improve the uniformity of mixing with concrete, ensure the performance consistency and yield rate of subsequent processed products, and has good application prospects.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A precise mixing device for steel fiber, mixed fiber and concrete comprises a mixing station, wherein a steel fiber feeding device and a mixed fiber feeding device are arranged outside the mixing station, wherein the steel fiber feeding device adds a quantitative bulk steel fiber row into the mixing station through a first conveyor belt, and the mixed fiber feeding device adds a quantitative bulk mixed fiber into the mixing station through a second conveyor belt; an external transmission device is arranged at the bottom of the mixing station, and the external transmission device conveys the mixture of concrete and mixed fibers to the outside.

[0007] Preferably, the steel fiber feeding device comprises a first material storage platform, a first feeding assembly arranged on one side of the first material storage platform, a centrifugal discharging assembly arranged on one side of the first feeding assembly, a first weighing and transmitting assembly arranged on one side of the centrifugal discharging assembly, and a first weighing and discharging assembly arranged on one side of the first weighing and transmitting assembly, and a steel fiber row with packaging is arranged on the first material storage platform; the first feeding assembly hoists the steel fiber row with packaging above the centrifugal discharging assembly so that the steel fiber row is placed into the centrifugal discharging assembly; the centrifugal discharging assembly disperses the steel fiber row and sequentially transports it to the first weighing and transmitting assembly, and the first weighing and transmitting assembly is used to weigh the steel fiber row located thereon and transport it to the first weighing and discharging assembly; the first weighing and discharging assembly is used to perform secondary weighing on the steel fiber row located therein and transport it to the first conveyor belt;

[0008] Preferably, the mixed fiber feeding device includes a second feeding component, a spiral vibration type discharging component arranged on one side of the second feeding component, a second weighing and transmission component arranged on one side of the spiral vibration type discharging component, and a second weighing and discharging component arranged on one side of the second weighing and transmission component, the second feeding component feeds the mixed fibers into the spiral vibration type discharging component, the spiral vibration type discharging component shakes the mixed fibers and then sequentially conveys them to the second weighing and transmission component, the second weighing and transmission component is used to weigh the mixed fibers thereon and convey them to the second weighing and discharging component, and the second weighing and discharging component is used to perform secondary weighing on the mixed fibers therein and output them to the second conveyor belt.

[0009] Preferably, the external transmission device includes a frame and a belt assembly installed on the frame, a support base is fixedly installed at one end of the frame, a support shaft is rotatably installed on the support base, a cleaning piece is detachably installed on the support shaft, an elastic support piece is installed on the support base, one end of the elastic support piece is connected to the support shaft, and under the action of the elastic support piece, one end of the cleaning piece is attached to the belt assembly to clean the concrete.

[0010] Preferably, the elastic support member includes a connecting member fixedly mounted on the support seat, a connecting plate fixedly mounted on one end of the support shaft and a spring mounted on the connecting member, one end of the connecting member passes through the connecting plate, and both ends of the spring respectively abut against the connecting member and the connecting plate.

[0011] Preferably, the first loading assembly includes a first lifting bracket, a mechanical arm rotatably mounted on the first lifting bracket, and a first electric hoist slidably mounted on the mechanical arm. The first electric hoist can lift the packaged steel fiber row arranged on the first storage platform to above the centrifugal discharging assembly so that the steel fiber row is placed into the centrifugal discharging assembly. The mechanical arm can rotate 360° around the first lifting bracket.

[0012] Preferably, the centrifugal discharging assembly includes a basic bracket, a damping spring fixedly mounted on the basic bracket, an attached vibrator fixedly mounted on the damping spring, a first barrel fixedly mounted on the attached vibrator, a first spiral discharging device fixedly mounted on the inner wall of the first barrel, and a first discharging trough arranged on the top of the first barrel, one end of the first discharging trough is located at the lower side of the outlet of the first spiral discharging device, and the other end of the first discharging trough is located above the first weighing transmission assembly.

[0013] Preferably, the spiral vibration discharging assembly includes a vibration base, a second barrel mounted on the vibration base, a second spiral discharging device mounted in the second barrel, a discharging drive motor fixedly mounted on the bottom of the second barrel, and a second discharging trough mounted on the second barrel, wherein the output end of the discharging drive motor is power-connected to the second spiral discharging device, one end of the second discharging trough is located at the lower side of the outlet of the second spiral discharging device, and the other end of the second discharging trough is located above the second weighing and transmission assembly.

[0014] Preferably, the first weighing and transmission assembly and the second weighing and transmission assembly have the same structure, including a mounting bracket, a weighing conveyor belt mounted on the mounting bracket, and a protective plate arranged on the side of the weighing conveyor belt, and the weighing conveyor belt is used to weigh and transport the steel fiber row or mixed fiber located thereon.

[0015] Preferably, the first weighing and discharging assembly and the second weighing and discharging assembly have the same structure, including a weighing sensor arranged on the mounting bracket, a discharging box arranged on the weighing sensor, and a hydraulic opening and closing gate fixedly arranged on the bottom of the discharging box, through which the steel fiber row or mixed fiber can be discharged outward.

[0016] In the utility model, the equipment can fully disperse the steel fibers and the mixed fibers, accurately mix them according to the preset ratio, effectively ensure the uniformity of the mixture and the accurate mixing ratio, and ensure the performance stability and product quality of the concrete products formed by subsequent pouring. The steel fibers are bonded into rows by the hydrosol, which effectively reduces the mutual entanglement of the steel fibers and facilitates the dispersion of the steel fibers. During the mixing and stirring process with the concrete, the hydrosol dissolves in water, so that the steel fibers are dispersed, and the overall mixing uniformity is improved.

[0017] The first feeding assembly and the second feeding assembly are capable of feeding 360° within their coverage range, which increases the feeding range and facilitates the feeding operation of the operator. The centrifugal discharging assembly is configured to perform vibration discharging of the steel fiber row. On the one hand, the entangled steel fiber rows are separated from each other by vibration, and on the other hand, the dispersed steel fiber rows are discharged outward in an orderly spiral through vibration, which 100% guarantees that each steel fiber row can be effectively separated. The coordination of the steel fiber row and the centrifugal vibration feeding is utilized to fully and effectively improve the dispersion effect of the steel fiber. The centrifugal discharging assembly is aimed at the heavy weight of the steel fiber row, and the centrifugal force generated by the vibration can be used to discharge the steel fiber row upward and outward in an orderly manner.

[0018] The spiral vibrating discharging component can disperse the intertwined mixed fibers by vibration, and then discharge the dispersed mixed fibers in an orderly manner through the spiral discharging device. Since the mixed fibers are mainly made of plastic and are light in weight, it is impossible to achieve external feeding by vibration. The dispersed mixed fibers are output by rotating driven by a motor, which ensures the feeding efficiency and vibration effect.

[0019] The first weighing and transmission component is set to weigh according to the preset weight and control the stopping of the centrifugal discharging component, which can automatically control the quality of the feeding. The first weighing and discharging component is set to weigh the steel fiber row twice. On the one hand, the weight of the steel fiber row weighed by the first weighing and transmission component can be weighed again to ensure the mixing ratio. On the other hand, the weight of the first weighing can be automatically adjusted according to the error of the two weighings, thereby improving the accuracy of the feeding, avoiding manual addition and subtraction of material weight, and improving the operating efficiency of the whole machine.

[0020] The second weighing and transmission component is set to weigh according to the preset weight and control the stopping of the centrifugal discharging component, which can automatically control the quality of the feeding. The second weighing and discharging component is set to weigh the mixed fibers for the second time. On the one hand, the weight of the mixed fibers weighed by the second weighing and transmission component can be weighed again to ensure the mixing ratio. On the other hand, the weight of the first weighing can be automatically adjusted according to the error of the two weighings, thereby improving the accuracy of the feeding, avoiding manual addition and subtraction of material weight, and improving the operating efficiency of the whole machine.

[0021] The elastic support parts are set up so that the cleaning parts can fit tightly on the surface of the belt, which has a better cleaning effect, avoids the consolidation of concrete on the belt, increases the service life of the belt, reduces the labor intensity of manual cleaning, facilitates disassembly, cleaning and replacement, and improves the convenience of cleaning. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the overall structural principle of the utility model;

[0023] Figure 2 This is a schematic diagram of the structure of the steel fiber feeding device of the utility model;

[0024] Figure 3 This is a schematic diagram of the structure of the steel fiber feeding device of the utility model from another perspective;

[0025] Figure 4 This is a schematic diagram of the steel fiber arrangement of the utility model;

[0026] Figure 5 This is a schematic diagram of the structure of the hybrid fiber feeding device of the utility model;

[0027] Figure 6 This is a schematic diagram of the structure of the hybrid fiber feeding device of the utility model from another perspective;

[0028] Figure 7 This is a schematic diagram of the partial structure of the spiral vibration type discharging component of the utility model;

[0029] Figure 8 This is a schematic diagram of the structure of the external transmission device of the utility model;

[0030] Fig. 9 It is a schematic diagram of the enlarged local structure of the external transmission device of the utility model;

[0031] In the figure: 1. Mixing and mixing station; 2. Control unit; 3. Steel fiber feeding device; 4. Mixed fiber feeding device; 5. First conveyor belt; 6. Second conveyor belt; 7. Steel fiber row; 8. External transmission device; 9. First operating frame; 10. First ladder; 11. Mounting bracket; 12. Weighing conveyor belt; 13. Protective plate; 14. Second operating frame; 15. Second ladder; 16. Weighing sensor; 17. Discharge box; 18. Hydraulic opening and closing gate; 30. First storage platform; 31. First loading assembly; 32. Centrifugal discharging assembly; 33. First weighing transmission assembly; 34. First weighing discharging assembly; 40. Second loading assembly; 41. Spiral vibration discharging assembly; 42. Second weighing transmission assembly; 43. Second weighing discharging assembly; 80. Frame; 81. Belt assembly; 82. Support seat; 83. Support shaft; 84. Cleaning part; 85. Brush; 86. Elastic support member; 310. First lifting bracket; 311. Mechanical arm; 312. First electric hoist; 320. Basic bracket; 321. Damping spring; 322. Attached vibrator; 323. First barrel; 324. First spiral discharger; 325. First discharge chute; 400. Second storage platform; 401. Second lifting bracket; 402. Second electric hoist; 410. Vibrating base; 411. Second barrel; 412. Second spiral discharger; 413. Discharge drive motor; 414. Second discharge chute; 810. Drive shaft; 811. Driven shaft; 812. Belt; 813. Drive motor; 840. Support bottom plate; 841. Arc scraper; 860. Connector; 861. Connecting plate; 862. Spring. DETAILED DESCRIPTION

[0032] The utility model is further described below in conjunction with the accompanying drawings:

[0033] like Figures 1 to 9 The device for accurately mixing steel fiber, hybrid fiber and concrete shown in the figure comprises a mixing station 1. The mixing station 1 adopts a mature large-scale concrete mixing station on the market. A hydraulic control valve is arranged at the bottom of the mixing station 1. The discharge amount and time of the mixing station 1 can be automatically or manually controlled by a control unit 2. Control buttons are arranged on each component, and the operator controls the action of each component individually through the control buttons.

[0034] A steel fiber feeding device 3 and a mixed fiber feeding device 4 are arranged outside the mixing station 1. The steel fiber feeding device 3 adds a quantitative bulk steel fiber row 7 into the mixing station 1 through a first conveyor belt 5, and the mixed fiber feeding device 4 adds a quantitative bulk mixed fiber into the mixing station 1 through a second conveyor belt 6, so as to mix the mixed fiber, the steel fiber row 7 and the concrete in the mixing station 1. The steel fiber row 7 is composed of a plurality of steel fibers fixedly connected in sequence by a hydrosol, and 10 to 20 steel fibers are fixedly connected to one steel fiber row 7. The mixed fiber is formed by mixing fibers made of a plurality of plastic materials.

[0035] An external transmission device 8 is provided at the bottom of the mixing station 1. The external transmission device 8 transmits the mixture of concrete and mixed fibers discharged from the mixing station 1 to the outside, and can be transported to a transfer vehicle. The external transmission device 8 includes a frame 80 and a belt assembly 81 installed on the frame 80. The frame 80 is fixed to the ground by anchor bolts. The belt assembly 81 includes a driving shaft 810 rotatably mounted on the frame 1 through a bearing seat, a driven shaft 811 rotatably mounted on the frame 80 through a bearing seat, a belt 812 connected to the driving shaft 810 and the driven shaft 811 by power, and a driving motor 813 fixedly mounted on the frame 80 by fasteners. The output shaft of the driving motor 813 is connected to one end of the driving shaft 810 by power through a reducer or a coupling. When the driving motor 813 is powered and rotated, it can drive the driving shaft 810 to rotate and realize the transportation of concrete.

[0036] A support seat 82 is fixedly installed on both ends of one side of the frame 80 by fasteners, a support shaft 83 is rotatably installed on the support seat 82 by a bearing or a sleeve, a cleaning member 84 is detachably installed on the support shaft 83 by bolts, and the width of the cleaning member 84 is not less than the width of the belt 812. In one embodiment, the cleaning member 84 is composed of a support base plate 840 detachably installed on the support shaft 83 by bolts and an arc scraper 841 detachably installed on the top of the support base plate 840 by bolts. The arc scraper 841 can be made of stainless steel or plastic material, which can be easily disassembled and cleaned. The arc scraper 841 fits on the surface of the belt 812 to clean the concrete. In a preferred embodiment, a chute is provided on the cleaning member 6, and a brush 85 is plugged and installed on the chute. The brush 85 can perform secondary cleaning on the belt 812, and can be easily cleaned and replaced after disassembly.

[0037] An elastic support member 86 is installed on the support seat 82, one end of the elastic support member 86 is connected to the support shaft 83, and under the elastic support of the elastic support member 86, one end of the cleaning member 84 is attached to the belt assembly 81, so as to clean the concrete on the surface of the belt 812. The elastic support member 86 includes a connecting member 860 fixedly installed on the support seat 82, a connecting plate 861 fixedly installed on one end of the support shaft 83 by welding or bolts, and a spring 862 installed on the connecting member 860. A through hole is provided on the connecting plate 861, one end of the connecting member 860 passes through the through hole on the connecting plate 861, and the two ends of the spring 862 are respectively against the connecting member 860 and the connecting plate 861. Of course, a torsion spring can also be installed on the support shaft 83, so that one end of the cleaning member 84 is attached to the outer surface of the belt 812.

[0038] The steel fiber feeding device 3 includes a first storage platform 30, on which a packaged steel fiber row 7 is arranged. The first storage platform 30 is welded by steel sections and iron plates. The packaged steel fiber row 7 is placed on the first storage platform 30. Of course, when the number of steel fiber rows 7 is large, they can also be placed around the first storage platform 30 and can be hoisted by using the first loading assembly 31.

[0039] A first loading assembly 31 is provided on one side of the first material storage platform 30, and the first loading assembly 31 hoists the packed steel fiber row 7 above the centrifugal discharging assembly 32 so that the steel fiber row 7 is placed into the centrifugal discharging assembly 32. The first loading assembly 31 includes a first hoisting bracket 310, a mechanical arm 311 rotatably mounted on the top of the first hoisting bracket 310 by rotating a reduction motor or a bearing, and a first electric hoist 312 slidably mounted on the mechanical arm 311 by a slide rail and a slider. Under the control of the operator, the first electric hoist 312 can hoist the packed steel fiber row 7 arranged on the first material storage platform 30 above the centrifugal discharging assembly 32 so that the steel fiber row 7 is placed into the centrifugal discharging assembly 32. The mechanical arm 311 can rotate 360° around the first hoisting bracket 310, and can hoist and transport the packed steel fiber row 7 within the range. In a preferred embodiment, the first electric hoist 312 can also be installed on the mechanical arm 311 through a gear rack structure, and the operator adjusts the relative position of the first electric hoist 312 on the mechanical arm 311 and the lifting and lowering of the steel fiber row 7 by the first electric hoist 312 through a remote control.

[0040] A centrifugal discharging assembly 32 is provided on one side of the first loading assembly 31, and the centrifugal discharging assembly 32 disperses the steel fiber row 7 and sequentially transports it to the first weighing and transmission assembly 33. The centrifugal discharging assembly 32 includes a base bracket 320, a plurality of damping springs 321 fixedly mounted on the base bracket 320 by fasteners, an attached vibrator 322 fixedly mounted on the other end of the damping spring 321 by fasteners, a first barrel 323 fixedly mounted on the attached vibrator 322 by fasteners, a first spiral discharging device 324 fixedly mounted on the inner wall of the first barrel 323 by welding, and a first discharging trough 325 fixedly mounted on the top of the first barrel 323 by fasteners, one end of the first discharging trough 325 is located at the lower side of the outlet of the first spiral discharging device 324, and the other end of the first discharging trough 325 is located above the first weighing and transmission assembly 34. During operation, the attached vibrator 322 is turned on to make the first barrel 323 vibrate on the damping spring 321, and the steel fiber row 7 therein is dispersed by the vibration force. Then, under the action of the centrifugal force generated by the vibration, the steel fiber row 7 is discharged upward and outward in sequence along the first spiral discharging device 324, thereby realizing sequential discharging after dispersion.

[0041] A first operating frame 9 is provided on one side of the centrifugal discharging assembly 32 and the first material storage platform 30, and a first ladder 10 is provided on one side of the operating frame 9. An operator climbs onto the first operating frame 9 through the first ladder 10 and performs operations on the first operating frame 9. On the first operating frame 9, the operator can observe the overall operation of the steel fiber feeding device 3, and it is also convenient for the operator to feed the packaged steel fiber row 7.

[0042] A first weighing and transmission assembly 33 is provided on one side of the centrifugal discharge assembly 32. The first weighing and transmission assembly 33 is used to weigh the steel fiber row 7 located thereon and convey it to the first weighing and discharge assembly 34. The first weighing and transmission assembly 33 and the second weighing and transmission assembly 42 have the same structure. Both of them include a mounting bracket 11, a weighing conveyor belt 12 installed on the mounting bracket 11, and a protective plate 13 arranged on the side of the weighing conveyor belt 12. The weighing conveyor belt 12 is used to weigh and convey the steel fiber row 7 or mixed fiber located thereon. In this embodiment, the weighing conveyor belt 12 uses a finished speed-adjusting belt scale purchased on the market. The structure and working principle of the speed-adjusting belt scale are well-known technologies. Therefore, the structure is not described in detail in the specification. When in use, the start and stop and rotation speed of the speed-adjusting belt scale can be automatically controlled by the control unit 2 or manually controlled by the controller. The protective plate 13 is used to protect the steel fiber row 7 to prevent the steel fiber row 7 from falling from the side.

[0043] A first weighing and discharging assembly 34 is provided on one side of the first weighing and transmission assembly 33. The first weighing and discharging assembly 34 is used to perform secondary weighing on the steel fiber row 7 located therein and output it to the first conveyor belt 5. The first weighing and discharging assembly 34 and the second weighing and discharging assembly 43 have the same structure, both of which include a weighing sensor 16 arranged on the mounting bracket 11, a discharging box 17 arranged on the weighing sensor 16, and a hydraulic opening and closing gate 18 fixed to the bottom of the discharging box 17 by fasteners. The weighing sensor 16 is a mature product purchased on the market. The weighing sensor 16 weighs the steel fiber row 7 or mixed fiber, the discharging box 17 and the hydraulic opening and closing gate 18 as a whole, and then automatically subtracts the weight of the discharging box 17 and the hydraulic opening and closing gate 18 to automatically calculate the weight of the steel fiber row 7 or mixed fiber. The opening and closing of the hydraulic opening and closing gate 18 is controlled by the control unit 2 or manually controlled by the operator. In a preferred embodiment, a vibrator is fixedly mounted on the discharge box 17, which facilitates the uniform output of the steel fiber row 7 or the mixed fiber and can also achieve a secondary vibration effect.

[0044] The mixed fiber feeding device includes a second feeding assembly 40, which includes a second material storage platform 400, a second hoisting bracket 401 fixedly arranged on one side of the second material storage platform 400, and a second electric hoist 402 slidably installed on the second hoisting bracket 401 through a slide rail and a slider. Under the operation of the operator, the second electric hoist 402 can be used to feed the packaged mixed fiber arranged on the second material storage platform 400 into the spiral vibration type discharge assembly 41. In a preferred embodiment, the second electric hoist 402 can also be installed on the second hoisting bracket 401 through a gear rack structure, and the operator adjusts the relative position of the second electric hoist 402 on the second hoisting bracket 401 and the lifting and lowering of the mixed fiber by the second electric hoist 402 through a remote control. The lateral support arm on the second hoisting bracket 401 can rotate 360 ​​degrees to hoist the mixed fiber within its coverage range.

[0045] A spiral vibration type discharging component 41 is arranged on one side of the second loading component 40, and the spiral vibration type discharging component 41 includes a vibration type base 410, a second barrel 411 fixedly mounted on the vibration type base 410 by fasteners, a second spiral discharging device 412 rotatably mounted in the second barrel 411 by bearings, a discharging driving motor 413 fixedly mounted on the bottom of the second barrel 411 by fasteners, and a second discharging trough 414 fixedly mounted on the top of the second barrel 411 by fasteners, the output end of the discharging driving motor 413 is sealed and passes through the bottom of the second barrel 411 to be dynamically connected with the second spiral discharging device 412, one end of the second discharging trough 414 is located at the lower side of the outlet of the second spiral discharging device 412, and is used to receive the material rotated out of the second spiral discharging device 412, and the other end of the second discharging trough 414 is located above the second weighing and transmission component 42, and transports the material rotated out of the second spiral discharging device 412 to the second weighing and transmission component 42. When the mixed fibers on the second spiral discharging device 412 are in a clumping state, they will slide off the second spiral discharging device 412, ensuring that the output mixed fibers are separated from each other in a loose state, thereby improving the uniformity of subsequent mixing with concrete. A vibration motor is provided on the vibration base 410, and when the vibration motor is turned on, the vibration base 410 generates vibration, so that the entangled mixed fibers are separated from each other through vibration.

[0046] A second weighing and transmitting assembly 42 is provided on one side of the spiral vibrating discharging assembly 41. The spiral vibrating discharging assembly 41 shakes the mixed fibers apart and sequentially transmits them to the second weighing and transmitting assembly 42. The second weighing and transmitting assembly 42 is used to weigh the mixed fibers thereon and transmit them to the second weighing and discharging assembly 43. A second weighing and discharging assembly 43 is provided on one side of the second weighing and transmitting assembly 42. The second weighing and discharging assembly 43 is used to weigh the mixed fibers therein for a second time and output them to the second conveyor belt 6. A second operating frame 14 is provided on one side of the spiral vibrating discharging assembly 41. A second ladder 15 is installed on one side of the second operating frame 14 through fasteners. The operator climbs up to the second operating frame 14 through the second ladder 15 to perform operations. The mixed fibers in the spiral vibrating discharging assembly 41 can be observed on the second operating frame 14.

[0047] In a preferred embodiment, a control unit 2 is also provided on the device, and the control unit 2 is used to control the steel fiber feeding device 3 and the mixed fiber feeding device 4 to mix and stir a certain amount of steel fiber row 7 and mixed fiber with concrete and transport them outward.

[0048] The control unit 2 uses a single-chip microcomputer or a PLC program controller. The operator writes a program for executing the whole machine operation in the control unit 9 in advance. The program is made by personnel in this field according to the operation requirements and is used to control each execution component to perform corresponding operations. The program is not described in detail in this manual. The steel fiber feeding device 3, the mixed fiber feeding device 4, and the external transmission device 8 are all electrically connected to the control unit 2 through cables. The control unit 2 comprehensively controls the actions of the steel fiber feeding device 3, the mixed fiber feeding device 4, and the external transmission device 8, so that the various components can work in coordination. A display and control buttons are also provided on the control unit 2. The display is used to display the working status of the steel fiber feeding device 3, the mixed fiber feeding device 4, and the external transmission device 8. The control button is used to individually control the action of the control button or change the weighing data parameters of the first weighing and discharging component 34, the first weighing and transmission component 33, the second weighing and discharging component 43, and the second weighing and transmission component 42, control the feeding speed of the first weighing and transmission component 33 and the second weighing and transmission component 42, control the start and stop of the discharging action of the first weighing and discharging component 34 and the second weighing and discharging component 43, and control the start and stop of the centrifugal discharging component 32 and the spiral vibration discharging component 41.

[0049] When the weight of the steel fiber row 7 detected by the first weighing and discharging component 34 exceeds the weight of the steel fiber row 7 detected by the first weighing and transmission component 33, the control unit 9 shortens the discharging time of the centrifugal discharging component 32 and / or reduces the weighing preset value of the first weighing and transmission component 33 according to the built-in program, so that the weight of the finally discharged steel fiber row 7 meets the preset value requirement. When the weight of the steel fiber row 7 detected by the first weighing and discharging component 34 is lower than the weight of the steel fiber row 7 detected by the first weighing and transmission component 33, the control unit 9 increases the discharging time of the centrifugal discharging component 32 and / or increases the weighing preset value of the first weighing and transmission component 33 according to the built-in program, so that the weight of the finally discharged steel fiber row 7 meets the preset value requirement.

[0050] When the weight of the mixed fiber detected by the second weighing and discharging component 43 exceeds the weight of the mixed fiber detected by the second weighing and transmission component 42, the control unit 2 shortens the discharging time of the spiral vibration type discharging component 41 and / or reduces the weighing preset value of the second weighing and transmission component 42 according to the built-in program, so that the weight of the mixed fiber discharged finally meets the preset value. When the weight of the mixed fiber detected by the second weighing and discharging component 43 is lower than the weight of the mixed fiber detected by the second weighing and transmission component 42, the control unit 2 increases the discharging time of the spiral vibration type discharging component 41 and / or increases the weighing preset value of the second weighing and transmission component 42 according to the built-in program, so that the weight of the mixed fiber discharged finally meets the preset value.

[0051] The above embodiments are only some descriptions of the concept and implementation of the utility model, and are not intended to limit the concept and implementation of the utility model. Under the concept of the utility model, technical solutions that have not been substantially changed are still within the scope of protection.

Claims

1. A precise mixing device for steel fiber, hybrid fiber and concrete, including a mixing station, characterized in that: A steel fiber feeding device and a mixed fiber feeding device are arranged on the outside of the mixing and mixing station. The steel fiber feeding device adds a quantitative bulk steel fiber row into the mixing and mixing station through a first conveyor belt, and the mixed fiber feeding device adds a quantitative bulk mixed fiber into the mixing and mixing station through a second conveyor belt. An external transmission device is arranged at the bottom of the mixing and mixing station, and the external transmission device transports the mixture of concrete and mixed fibers to the outside.

2. The precise mixing equipment for steel fiber, hybrid fiber and concrete according to claim 1, characterized in that: The steel fiber feeding device includes a first storage platform, a first loading assembly arranged on one side of the first storage platform, a centrifugal discharging assembly arranged on one side of the first loading assembly, a first weighing and transmitting assembly arranged on one side of the centrifugal discharging assembly, and a first weighing and discharging assembly arranged on one side of the first weighing and transmitting assembly. A steel fiber row with packaging is arranged on the first storage platform; the first loading assembly hoists the steel fiber row with packaging above the centrifugal discharging assembly so that the steel fiber row is placed into the centrifugal discharging assembly; the centrifugal discharging assembly vibrates the steel fiber row and then sequentially transports it to the first weighing and transmitting assembly, the first weighing and transmitting assembly is used to weigh the steel fiber row thereon and transport it to the first weighing and discharging assembly; the first weighing and discharging assembly is used to perform secondary weighing on the steel fiber row therein and transport it to the first conveyor belt.

3. The precise mixing equipment of steel fiber, hybrid fiber and concrete according to claim 2, characterized in that: The mixed fiber feeding device includes a second feeding component, a spiral vibration discharging component arranged on one side of the second feeding component, a second weighing and transmitting component arranged on one side of the spiral vibration discharging component, and a second weighing and discharging component arranged on one side of the second weighing and transmitting component. The second feeding component feeds the mixed fibers into the spiral vibration discharging component, the spiral vibration discharging component shakes the mixed fibers and then sequentially transports them to the second weighing and transmitting component, the second weighing and transmitting component is used to weigh the mixed fibers thereon and transport them to the second weighing and discharging component, and the second weighing and discharging component is used to perform secondary weighing on the mixed fibers therein and output them to the second conveyor belt.

4. The precise mixing device of steel fiber, hybrid fiber and concrete according to any one of claims 1 to 3, characterized in that: The external transmission device includes a frame and a belt assembly installed on the frame, a support base is fixedly installed at one end of the frame, a support shaft is rotatably installed on the support base, a cleaning piece is detachably installed on the support shaft, an elastic support piece is installed on the support base, one end of the elastic support piece is connected to the support shaft, and under the action of the elastic support piece, one end of the cleaning piece is attached to the belt assembly to clean the concrete.

5. The precise mixing equipment of steel fiber, hybrid fiber and concrete according to claim 4, characterized in that: The elastic support member includes a connecting member fixedly mounted on the support seat, a connecting plate fixedly mounted on one end of the support shaft, and a spring mounted on the connecting member, one end of the connecting member passes through the connecting plate, and two ends of the spring respectively abut against the connecting member and the connecting plate.

6. The precise mixing equipment of steel fiber, hybrid fiber and concrete according to claim 2, characterized in that: The first loading assembly includes a first lifting bracket, a mechanical arm rotatably mounted on the first lifting bracket, and a first electric hoist slidably mounted on the mechanical arm. The first electric hoist can lift the packaged steel fiber row arranged on the first storage platform to above the centrifugal discharging assembly so that the steel fiber row is placed into the centrifugal discharging assembly. The mechanical arm can rotate 360° around the first lifting bracket.

7. The precise mixing equipment of steel fiber, hybrid fiber and concrete according to claim 2 or 6, characterized in that: The centrifugal discharging assembly includes a basic bracket, a damping spring fixedly mounted on the basic bracket, an attached vibrator fixedly mounted on the damping spring, a first barrel fixedly mounted on the attached vibrator, a first spiral discharging device fixedly mounted on the inner wall of the first barrel, and a first discharging trough arranged on the top of the first barrel, one end of the first discharging trough is located at the lower side of the outlet of the first spiral discharging device, and the other end of the first discharging trough is located above the first weighing and transmission assembly.

8. The precise mixing equipment of steel fiber, hybrid fiber and concrete according to claim 3 is characterized by: The spiral vibration type discharging assembly includes a vibration type base, a second barrel installed on the vibration type base, a second spiral discharging device installed in the second barrel, a discharging drive motor fixedly installed on the bottom of the second barrel and a second discharging trough installed on the second barrel, wherein the output end of the discharging drive motor is power-connected to the second spiral discharging device, one end of the second discharging trough is located at the lower side of the outlet of the second spiral discharging device, and the other end of the second discharging trough is located above the second weighing and transmission assembly.

9. The precise mixing equipment of steel fiber, hybrid fiber and concrete according to claim 3 or 8, characterized in that: The first weighing and transmission assembly and the second weighing and transmission assembly have the same structure, including a mounting bracket, a weighing conveyor belt mounted on the mounting bracket, and a protective plate arranged on the side of the weighing conveyor belt. The weighing conveyor belt is used to weigh and transport the steel fiber row or mixed fiber located thereon.

10. The precise mixing equipment of steel fiber, hybrid fiber and concrete according to claim 3 or 8, characterized in that: The first weighing and discharging assembly and the second weighing and discharging assembly have the same structure, including a weighing sensor arranged on a mounting bracket, a discharging box arranged on the weighing sensor, and a hydraulic opening and closing gate fixedly arranged on the bottom of the discharging box, through which the steel fiber row or the mixed fiber can be discharged outward.

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