Concrete stirring method for road construction

Abstract

The invention discloses a concrete stirring method for highway construction, which comprises the following steps: S1, preparing and metering materials: selecting cement, graded aggregate, an additive and a fiber material which conform to specifications, and weighing the required materials according to the mixing ratio; s2, wet stirring: gradually adding a set amount of water into the mixing box, and adding the weighed additive into the mixing box; s3, fiber feeding: gradually adding a fiber material into the mixing box, and continuously stirring to ensure that the fiber material is uniformly distributed in the concrete; s4, performance determination: detecting the slump of the concrete in real time to ensure that the performance of the concrete meets the design requirements, and adjusting the amount of water in real time according to the determined slump value; when concrete needing to be added with fiber materials is stirred, dry stirring operation is not needed, it can be ensured that the fiber materials are evenly distributed in the concrete materials, and therefore the stirring time is effectively shortened, and the stirring efficiency of the concrete is improved.

Description

Technical Field

[0001] The invention relates to the technical field of concrete mixing, in particular to a concrete mixing method for highway construction. Background Art

[0002] Highway construction refers to the construction of a road system for vehicles and pedestrians through a series of processes such as design, planning, construction and maintenance. Highway construction is an important part of modern infrastructure construction, connecting cities and villages, promoting economic development and social progress. In highway construction, various building materials and construction technologies are needed to ensure the quality and durability of the road. Among them, concrete is one of the commonly used materials in highway construction and is widely used in projects such as road foundations, pavements and bridges.

[0003] Concrete is a building material made of cement, sand, gravel and water in a certain proportion. After mixing, pouring and curing, concrete will harden into a strong composite material with good compressive strength and durability. It is suitable for various construction and engineering projects. In highway construction, concrete is usually used for paving roads, building bridges and culverts, etc.

[0004] Chinese patent (Announcement No.: CN118081990A), the scheme specifically includes a stirring shaft, wherein the stirring shaft is provided with a vibrating roller capable of rolling along the inner wall of the stirring shaft, wherein the vibrating roller is connected to a transmission assembly, wherein the transmission assembly includes two groups of eccentric sleeves, wherein the two groups of eccentric sleeves are respectively arranged at the two ends of the stirring shaft, and the vibrating roller is located in the middle of the two groups of eccentric sleeves, wherein both groups of eccentric sleeves are connected to the rotating shaft of the vibrating roller through a transmission rod, wherein the transmission rod can be bent, and the vibrating roller is provided with a mixing device for preparing dense concrete and a mixing method thereof. The mixing device for preparing dense concrete and the mixing method thereof utilize the high-speed rolling of the vibrating roller inside the stirring shaft to generate vibration, wherein the internal rotating shaft is subjected to a small reaction force, and at the same time, the reaction force of the vibrating roller on the eccentric sleeve is also small, thereby improving the service life of the vibration-related structure and the vibration intensity and amplitude to be borne.

[0005] When the mixing device in the existing patent is used to mix concrete with added fiber materials, in order to ensure that the fiber materials can be evenly distributed, the concrete is usually mixed by dry mixing first, that is, the fiber materials are evenly distributed in the material without adding water, and then water is added for wet mixing. Among them, this mixing method will take up a certain amount of extra mixing time due to the use of dry mixing operation, which makes it difficult to improve the mixing efficiency.

[0006] At the same time, if wet mixing operations are carried out directly, the clumped fiber materials are difficult to disperse in materials with a certain viscosity. Among them, the main function of the fiber material is to improve the crack resistance and toughness of concrete, and the clumped fiber materials make it difficult to ensure that the concrete reaches the predetermined tensile strength and flexural strength after molding.

[0007] Therefore, a concrete mixing method for highway construction is proposed. Summary of the invention

[0008] The purpose of the present invention is to provide a concrete mixing method for highway construction, which has the advantages of preventing fiber materials from agglomerating and reducing mixing time, and solves the problem of difficulty in improving mixing efficiency.

[0009] To achieve the above object, the present invention provides the following technical solution: a method for mixing concrete for highway construction, comprising the following steps: S1. Material preparation and measurement: Select cement, graded aggregate, admixture and fiber material that meet the specifications, and weigh the required materials according to the mix ratio; S2, wet mixing: gradually add a set amount of water into the mixing box to start the wet mixing process, and during the mixing process, gradually add the weighed admixture into the mixing box; S3. Fiber placement: gradually add fiber materials into the mixing box and continue the mixing process to ensure that the fiber materials are evenly distributed in the concrete; S4. Performance measurement: Real-time detection of concrete slump to ensure that concrete performance meets design requirements, and real-time adjustment of water usage based on the measured slump value.

[0010] Preferably, a concrete mixing method for highway construction comprises a mixing box for containing mixing materials and a plurality of sets of spiral stirring shafts for mixing a plurality of materials, the mixing box is provided with a storage frame for receiving fiber materials, and the mixing box is provided with a material distribution structure for driving the fiber materials to be evenly dispersed into the concrete; The material distribution structure includes a transverse shift seat arranged on the mixing box and freely moving in the horizontal direction, a transverse slide groove for the mixing box to slide horizontally is provided on the mixing box, and a spiral stirring shaft rotates on the transverse shift seat with a fixed axis; The storage frame is fixedly connected with a material distribution frame, and the material distribution frame is provided with a slow-adding component for driving the fiber material to be gradually added into the mixing box. The mixing box is fixedly connected with a conical air cavity for receiving the fiber material falling from the material distribution frame, and the conical air cavity is provided with a wind dispersion component for preventing the fiber material from clumping.

[0011] Preferably, two sets of side plates are fixedly connected to the mixing box, a spline shaft freely rotating in the vertical direction is provided between the two sets of side plates, and the spline shaft is fixedly rotated on the two sets of side plates; The transverse displacement seat is provided with a stop groove, a worm is provided in the stop groove, and the worm is in sliding contact with the inner wall of the stop groove, and the worm sliding sleeve is provided on the spline shaft; The worm is meshingly connected with a worm wheel, and the worm wheel is fixedly rotated on the transverse shift seat, and a limit assembly for limiting the horizontal travel distance of the transverse shift seat is provided on the side plate; A central gear is coaxially fixed on the worm wheel, and a plurality of sets of side gears are meshed on the central gear. The side gears rotate on the transverse seat with fixed axes, and the spiral stirring shaft and the side gears are coaxially fixed.

[0012] Preferably, the limiting assembly comprises a limiting rod which is fixedly rotated on the side plate, an end of the limiting rod which is away from the side plate is fixedly rotated with a positioning rod, and an end of the positioning rod which is away from the limiting rod is coaxially fixed with the worm gear.

[0013] Preferably, the mixing box comprises an integrally formed inner sandwich plate, a sealing plate is provided on the inner sandwich plate and a rectangular groove is provided for the sealing plate to slide horizontally, and the spiral stirring shaft rotates on the sealing plate.

[0014] Preferably, the slow-adding component includes a center column coaxially arranged with the material distribution frame and rotating on the material distribution frame with a fixed axis, a plurality of groups of radial partitions are fixedly connected to the outer peripheral surface of the center column, the material distribution frame and the center column are fixedly connected, the radial partitions are in sliding contact with the inner wall of the material distribution frame, and a bin for accommodating fiber materials is formed between two adjacent groups of radial partitions; The conical air cavity is provided with a material guide groove for penetrating the bottom of the conical air cavity.

[0015] Preferably, the slow-adding assembly further comprises a driving wheel coaxially fixed on the spline shaft, a driven wheel is fixedly rotated on the mixing box, and a belt is provided for transmission connection between the driving wheel and the driven wheel; The center column is coaxially fixed with an adjustment disk, and a positioning pin is fixedly connected to the side of the driven wheel facing the adjustment disk. The driven wheel is provided with multiple groups of positioning grooves for the positioning pins to slide, and the multiple groups of positioning grooves are arranged in a circular array on the adjustment disk.

[0016] Preferably, the wind dispersion assembly includes a spoiler blade disposed in a conical wind cavity and coaxially fixed with the driven wheel, the spoiler blade is located at one end of the material guide trough away from the mixing box, and the conical wind cavity has a plurality of groups of air supply holes corresponding to the positions of the spoiler blade.

[0017] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention provides a material distribution structure, which can gradually add fiber materials during the concrete mixing process to prevent agglomeration and ensure that the fiber materials are evenly distributed in the concrete, thereby improving the toughness and durability of the concrete. At the same time, the fiber materials are blown away by wind force, so that the fiber materials are in a dispersed state before contacting the concrete, which helps to mix the fiber materials with other concrete materials more quickly and evenly.

[0018] 2. The present invention uses a slow-adding component and a fan component in combination, so that when mixing concrete to which fiber materials need to be added, there is no need for dry mixing operations, and the fiber materials can be ensured to be evenly distributed in the concrete material, thereby effectively reducing the mixing time and improving the mixing efficiency of the concrete. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A schematic diagram of a concrete mixing method for highway construction according to the present invention; Figure 2 This is a schematic diagram of the components where the spiral stirring shaft of the present invention is located; Figure 3 This is a schematic diagram of the components of the material distribution frame of the present invention; Figure 4 It is a schematic diagram of the components where the transverse shift seat of the present invention is located; Figure 5 This is a schematic diagram of the components where the sealing plate of the present invention is located; Figure 6 This is a schematic diagram of the component where the positioning pin of the present invention is located; Figure 7 This is a schematic diagram of the components where the spoiler blades of the present invention are located; Figure 8 For the present invention Figure 3 Enlarged view of point A in the middle.

[0020] In the figure: 1. mixing box; 101. inner sandwich plate; 2. storage frame; 3. spline shaft; 4. side plate; 5. worm; 6. transverse seat; 7. stop groove; 8. worm wheel; 9. isotropic rod; 10. limit rod; 11. transverse slide groove; 12. center gear; 13. side gear; 14. sealing plate; 15. spiral stirring shaft; 16. driving wheel; 17. driven wheel; 18. positioning pin; 19. adjustment plate; 20. positioning groove; 21. material distribution frame; 22. center column; 23. radial partition; 24. silo; 25. conical air cavity; 26. material guide trough; 27. spoiler blade; 28. belt; 29. ​​air supply hole. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] See also Figures 1 to 8 The present invention provides a technical solution: a concrete mixing method for highway construction, comprising the following steps: S1. Material preparation and measurement: Select cement, graded aggregate, admixture and fiber material that meet the specifications, and weigh the required materials according to the mix ratio; S2, wet mixing: gradually add a set amount of water into the mixing box 1 to start the wet mixing process, and during the mixing process, gradually add the weighed admixture into the mixing box 1; S3, fiber placement: gradually add the fiber material into the mixing box 1, and continue the mixing process to ensure that the fiber material is evenly distributed in the concrete; S4. Performance measurement: Real-time detection of concrete slump to ensure that concrete performance meets design requirements, and real-time adjustment of water usage based on the measured slump value.

[0023] like Figure 1 As shown, select cement, graded aggregate, admixtures and fiber materials that meet the specifications, where: Cement selection: Choose cement that meets national standards, usually use silicate cement or ordinary silicate cement, ensure the freshness of the cement, and do not use cement that has become damp and agglomerated.

[0024] Selection of graded aggregate: Select coarse aggregate and fine aggregate of appropriate particle size according to design requirements. The particle size of aggregate should meet the requirements of concrete mix design and avoid being too large or too small.

[0025] Admixture selection: Select appropriate admixtures such as water reducers, air entraining agents, and retarders according to the performance requirements of concrete. The admixtures should comply with relevant standards to ensure good dispersibility and stability in concrete.

[0026] Fiber material selection: Select fiber materials suitable for enhancing the toughness of concrete, such as polypropylene fiber or steel fiber.

[0027] Material weighing: According to the concrete mix ratio, accurately weigh the amount of each material to ensure the accuracy of the ratio. Use precision electronic scales or other measuring equipment for weighing to ensure the accuracy of measurement.

[0028] The weighed materials are added into the mixing box 1, and the amount of water calculated according to the mix ratio is added into the mixing box 1. The water should be added in batches to avoid uneven mixing caused by adding too much at one time. During the wet mixing process, the weighed admixtures are gradually added into the mixing box 1, and the admixtures should be added evenly to avoid local excess and affect the performance of the concrete.

[0029] At the same time, during the wet mixing process, the fiber material is gradually added to the mixing box 1. The fiber should be added evenly and slowly to avoid agglomeration caused by adding too much at one time. After the fiber is added, continue stirring for a period of time to ensure that the fiber material is evenly distributed in the concrete. The stirring time should be appropriately adjusted according to the mix ratio of the concrete.

[0030] At the same time, a conical cylinder is used to test the slump of concrete to determine the working performance of concrete. The slump test is carried out according to standard operations and the measurement results are recorded. The fluidity and operability of the concrete are judged based on the measured slump value. If the slump is too large or too small, the amount of water can be adjusted in real time as needed to ensure that the concrete performance meets the design requirements.

[0031] One of the more preferred embodiments is a concrete mixing method for highway construction, comprising a mixing box 1 for containing mixing materials and a plurality of sets of spiral stirring shafts 15 for mixing a plurality of materials, the mixing box 1 is provided with a storage frame 2 for receiving fiber materials, and the mixing box 1 is provided with a material distribution structure for driving the fiber materials to be evenly dispersed into the concrete; The material distribution structure includes a transverse shift seat 6 which is arranged on the mixing box 1 and can move freely in the horizontal direction. The mixing box 1 is provided with a transverse slide 11 for the mixing box 1 to slide horizontally. The spiral stirring shaft 15 rotates on the transverse shift seat 6 with a fixed axis. The storage frame 2 is fixedly connected to a material distribution frame 21, and the material distribution frame 21 is provided with a slow-adding component for driving the fiber material to be gradually added into the mixing box 1. The mixing box 1 is fixedly connected to a conical air cavity 25 for receiving the fiber material falling from the material distribution frame 21, and the conical air cavity 25 is provided with a wind dispersion component for preventing the fiber material from clumping.

[0032] like Figure 2 and Figure 3 As shown, the spiral stirring shaft 15 is arranged on the transverse displacement seat 6, and the transverse displacement seat 6 reciprocates horizontally in the laying direction of the transverse chute 11 provided on the mixing box 1, wherein the spiral stirring shaft 15 rotates freely in the vertical direction. Therefore, through the horizontal movement of the transverse displacement seat 6, the stirring position of the spiral stirring shaft 15 can be changed, thereby reducing the mixing dead angle and the phenomenon of local uneven mixing, ensuring that the material in each part can be more fully stirred, and the spiral stirring shaft 15 follows the horizontal movement of the transverse displacement seat 6 to promote the flow of materials in the mixing box 1, so that different graded aggregates can be better mixed together.

[0033] At the same time, when adding fiber material into the mixing box 1, the fiber material can be placed in the storage frame 2 first, and the fiber material in the distribution frame 21 can be gradually introduced into the conical wind cavity 25 through the slow addition component, and the fiber material entering the conical wind cavity 25 can be blown away by the wind dispersion component, wherein the blowing direction of the fiber material is toward the inside of the mixing box 1, thereby avoiding the agglomeration of the fiber material and allowing the fiber material to be added to the mixing box 1 relatively evenly.

[0034] Furthermore, by blowing the fiber material apart through wind force, the fiber can be in a dispersed state when entering the mixing box 1, which helps to mix the fiber material with other concrete materials more quickly and evenly.

[0035] Furthermore, two sets of side plates 4 are fixedly connected to the mixing box 1, and a spline shaft 3 that can rotate freely in the vertical direction is provided between the two sets of side plates 4, and the spline shaft 3 rotates on the two sets of side plates 4 in a fixed axis; The transverse displacement seat 6 is provided with a stop groove 7, in which a worm 5 is provided, and the worm 5 is in sliding contact with the inner wall of the stop groove 7, and the worm 5 is slidably sleeved on the spline shaft 3; The worm 5 is meshingly connected with a worm wheel 8, and the worm wheel 8 is fixedly rotated on the transverse shift seat 6, and a limit assembly for limiting the horizontal travel distance of the transverse shift seat 6 is provided on the side plate 4; A central gear 12 is coaxially fixed on the worm gear 8 , and a plurality of sets of side gears 13 are meshed on the central gear 12 . The side gears 13 rotate on the transverse shift seat 6 , and the spiral stirring shaft 15 and the side gears 13 are coaxially fixed.

[0036] The limiting assembly includes a limiting rod 10 that rotates on the side plate 4 with a fixed axis, and a positioning rod 9 that rotates on a fixed axis at one end of the limiting rod 10 away from the side plate 4, and the positioning rod 9 is coaxially fixed between the end away from the limiting rod 10 and the worm gear 8.

[0037] The mixing box 1 comprises an integrally formed inner sandwich plate 101 , on which a sealing plate 14 is provided and a rectangular groove for the sealing plate 14 to slide horizontally is provided, and a spiral stirring shaft 15 is fixedly rotated on the sealing plate 14 .

[0038] like Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 8As shown, when the spline shaft 3 rotates freely in the vertical direction, it can drive the worm 5 slidably mounted thereon to rotate synchronously, wherein the worm 5 is meshed with a worm wheel 8, and the worm wheel 8 is fixedly arranged on the transverse displacement seat 6, and a positioning rod 9 and a limiting rod 10 are arranged between the worm wheel 8 and the side plate 4. When the worm wheel 8 drives the positioning rod 9 to rotate, under the restriction of the limiting rod 10, the horizontal position of the worm wheel 8 and the transverse displacement seat 6 will change, and the direction of rotation of the spline shaft 3 remains unchanged. Therefore, the rotation direction of the worm 5 and the worm wheel 8 remains unchanged, but the transverse displacement seat 6 can be reciprocated in the horizontal direction under the restriction of the positioning rod 9 and the limiting rod 10.

[0039] At the same time, the worm wheel 8 is coaxially provided with a center gear 12, and the center gear 12 is meshingly connected with the side gear 13 coaxially fixed with the spiral stirring shaft 15. Therefore, when the center gear 12 rotates following the worm wheel 8, it can drive multiple groups of spiral stirring shafts 15 to rotate synchronously, thereby stirring the materials in the mixing box 1, and by changing the horizontal position of the transverse position seat 6, the stirring dead angle is reduced to ensure that the materials in the mixing box 1 can be more fully stirred.

[0040] It should be noted that in order to prevent the material in the mixing box 1 from affecting the horizontal movement of the transverse seat 6, the sealing plate 14 and the inner sandwich plate 101 are provided so that the sealing plate 14 can be slidably connected in the inner sandwich plate 101, thereby preventing the material in the mixing box 1 from directly contacting the transverse seat 6, preventing concrete from adhering to the transverse seat 6, and further preventing subsequent motion interference with the horizontal movement of the transverse seat 6 after the concrete solidifies.

[0041] Based on the embodiment of the limiting component, the slow-feeding component includes a center column 22 that is coaxially arranged with the dividing frame 21 and rotates on the dividing frame 21 with a fixed axis. The outer peripheral surface of the center column 22 is fixedly connected to multiple groups of radial partitions 23. The dividing frame 21 and the center column 22 are fixedly connected. The radial partitions 23 are in sliding contact with the inner wall of the dividing frame 21. A silo 24 for accommodating fiber materials is formed between two adjacent groups of radial partitions 23. The conical wind cavity 25 is provided with a material guide groove 26 for penetrating the bottom of the conical wind cavity 25.

[0042] The slow-adding assembly also includes a driving wheel 16 coaxially fixed on the spline shaft 3, a driven wheel 17 is fixedly rotated on the mixing box 1, and a belt 28 is provided for transmission connection between the driving wheel 16 and the driven wheel 17; The center column 22 is coaxially fixed with an adjustment disk 19, and a positioning pin 18 is fixedly connected to the driven wheel 17 on the side facing the adjustment disk 19. The driven wheel 17 is provided with multiple groups of positioning grooves 20 for the positioning pin 18 to slide, and the multiple groups of positioning grooves 20 are arranged in a circular array on the adjustment disk 19.

[0043] like Figure 2 , Figure 6 and Figure 7 As shown, when the spline shaft 3 rotates in the vertical direction, it drives the driving wheel 16 fixed thereon to rotate synchronously, and the driving wheel 16 drives the driven wheel 17 to rotate through the belt 28, wherein a positioning pin 18 is fixedly provided on the driven wheel 17. At the same time, a plurality of positioning grooves 20 for the positioning pin 18 to slide are provided on the adjusting disk 19. When the adjusting disk 19 follows the rotation of the driven wheel 17 and slides in a group of positioning grooves 20, it can drive the positioning pin 18 to rotate a certain angle in the vertical direction.

[0044] At the same time, a center column 22 is coaxially fixed to the adjusting disk 19, and a plurality of groups of radial partitions 23 are provided on the center column 22, and a silo 24 for accommodating the fiber material is formed between two adjacent groups of radial partitions 23. Through the rotatable center column 22, the silo 24 containing the fiber material can naturally fall into the conical air cavity 25 through the material guide trough 26, and the center column 22 rotates intermittently following the adjusting disk 19. Therefore, the fiber material can be added to the concrete in batches, thereby avoiding the agglomeration phenomenon caused by adding too much at one time.

[0045] Based on the slow-adding component embodiment, the wind dispersion component includes a spoiler blade 27 arranged in the conical wind cavity 25 and coaxially fixed with the driven wheel 17. The spoiler blade 27 is located at the end of the material guide trough 26 away from the mixing box 1, and a plurality of groups of air supply holes 29 are opened in the conical wind cavity 25 corresponding to the position of the spoiler blade 27.

[0046] like Figure 2 and Figure 7 As shown, the slow-adding component and the wind dispersion component move synchronously, wherein the slow-adding component allows the fiber material to intermittently enter the conical wind cavity 25 from the storage frame 2 and the distribution frame 21. At the same time, the wind dispersion component includes a spoiler blade 27 which is coaxially arranged with the driven wheel 17 and rotates freely in the conical wind cavity 25. Therefore, the fiber material entering the conical wind cavity 25 is dispersed by the rotating spoiler blade 27, and the fiber material is blown into the mixing box 1, so that the fiber material can be in a dispersed state when entering the mixing box 1, which is helpful for faster and more even mixing of the fiber material and other concrete materials.

[0047] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A concrete mixing method for highway construction, characterized in that: The following steps are involved: S1. Material preparation and measurement: Select cement, graded aggregate, admixture and fiber material that meet the specifications, and weigh the required materials according to the mix ratio; S2, wet mixing: gradually adding a set amount of water into the mixing box (1) to start the wet mixing process, and during the mixing process, gradually adding the weighed admixture into the mixing box (1); S3, fiber placement: gradually adding fiber materials into the mixing box (1), and continuously performing the mixing process to ensure that the fiber materials are evenly distributed in the concrete; S4. Performance measurement: Real-time detection of concrete slump to ensure that concrete performance meets design requirements, and real-time adjustment of water usage based on the measured slump value.

2. A method for mixing concrete for highway construction according to claim 1, comprising a mixing box (1) for containing mixing materials and a plurality of sets of spiral stirring shafts (15) for mixing a plurality of materials, the mixing box (1) being provided with a storage frame (2) for receiving fiber materials, characterized in that: The mixing box (1) is provided with a material distribution structure for driving the fiber material to be evenly dispersed into the concrete.

3. A method for mixing concrete for highway construction according to claim 2, characterized in that: The material distribution structure comprises a transverse displacement seat (6) which is arranged on the mixing box (1) and is freely movable in the horizontal direction. The mixing box (1) is provided with a transverse sliding groove (11) for the mixing box (1) to slide horizontally. The spiral stirring shaft (15) is fixedly rotated on the transverse displacement seat (6).

4. A method for mixing concrete for highway construction according to claim 3, characterized in that: The storage frame (2) is fixedly connected to a material distribution frame (21), the material distribution frame (21) is provided with a slow-adding component for driving the fiber material to be gradually added into the mixing box (1), the mixing box (1) is fixedly connected to a conical air cavity (25) for receiving the fiber material falling from the material distribution frame (21), and the conical air cavity (25) is provided with a wind dispersion component for preventing the fiber material from agglomerating; The mixing box (1) is fixedly connected to two sets of side plates (4), a spline shaft (3) that can rotate freely in a vertical direction is provided between the two sets of side plates (4), and the spline shaft (3) rotates on the two sets of side plates (4) in a fixed axis; The transverse displacement seat (6) is provided with a stop groove (7), a worm (5) is provided in the stop groove (7), the worm (5) is in sliding contact with the inner wall of the stop groove (7), and the worm (5) is slidably sleeved on the spline shaft (3); The worm (5) is meshingly connected with a worm wheel (8), and the worm wheel (8) is fixedly axially rotated on the transverse displacement seat (6), and a limit assembly for limiting the horizontal travel distance of the transverse displacement seat (6) is provided on the side plate (4); A central gear (12) is coaxially fixed on the worm gear (8), a plurality of sets of side gears (13) are meshed on the central gear (12), and the side gears (13) are fixedly rotated on the transverse shift seat (6), and the spiral stirring shaft (15) and the side gears (13) are coaxially fixed therebetween; The limiting assembly comprises a limiting rod (10) which is fixedly rotated on the side plate (4); an end of the limiting rod (10) which is away from the side plate (4) is fixedly rotated with a positioning rod (9); and an end of the positioning rod (9) which is away from the limiting rod (10) is coaxially fixed with the worm gear (8); The slow-feeding assembly comprises a center column (22) which is coaxially arranged with the material distribution frame (21) and is rotatable on the material distribution frame (21); a plurality of groups of radial partitions (23) are fixedly connected to the outer peripheral surface of the center column (22); the material distribution frame (21) and the center column (22) are fixedly connected; the radial partitions (23) are in sliding contact with the inner wall of the material distribution frame (21); and a material bin (24) for accommodating fiber materials is formed between two adjacent groups of radial partitions (23); The conical air cavity (25) is provided with a material guide groove (26) for penetrating the bottom of the conical air cavity (25).

5. A method for mixing concrete for highway construction according to claim 4, characterized in that: The mixing box (1) comprises an integrally formed inner sandwich plate (101), a sealing plate (14) being provided on the inner sandwich plate (101) and a rectangular groove for the sealing plate (14) to slide horizontally being provided, and a spiral stirring shaft (15) being fixedly rotatable on the sealing plate (14).

6. A method for mixing concrete for highway construction according to claim 5, characterized in that: The slow-adding assembly also includes a driving wheel (16) coaxially fixed on the spline shaft (3), a driven wheel (17) is fixedly rotatable on the mixing box (1), and a belt (28) is provided for transmission connection between the driving wheel (16) and the driven wheel (17).

7. A method for mixing concrete for highway construction according to claim 6, characterized in that: The center column (22) is coaxially fixed with an adjustment disk (19), and a positioning pin (18) is fixedly connected to the side of the driven wheel (17) facing the adjustment disk (19), and a plurality of groups of positioning grooves (20) for the positioning pins (18) to slide are formed on the driven wheel (17), and the plurality of groups of positioning grooves (20) are arranged in a ring array on the adjustment disk (19).

8. A method for mixing concrete for highway construction according to claim 7, characterized in that: The wind dispersion assembly comprises a spoiler blade (27) disposed in the conical wind cavity (25) and coaxially fixed to the driven wheel (17); the spoiler blade (27) is located at one end of the material guide trough (26) away from the mixing box (1); and the conical wind cavity (25) is provided with a plurality of groups of air supply holes (29) at positions corresponding to the spoiler blade (27).

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