Pouring type modified phosphogypsum concrete road construction system

Abstract

The invention relates to the technical field of modified ardealite concrete road pouring construction equipment, and provides a pouring type modified ardealite concrete road construction system which comprises an automatic batching and continuous supply system, an automatic mixing and distributing system and an automatic vibrating, trowelling and finishing system. The automatic batching and continuous supply system is used for batching raw materials at least comprising modified ardealite and aggregate to obtain a modified ardealite concrete raw material, and the automatic mixing and distributing system is used for stirring the modified ardealite concrete raw material to form modified ardealite concrete and pouring the modified ardealite concrete on a road surface. And the automatic vibrating, trowelling and smoothing system is used for paving and forming the modified phosphogypsum concrete on the road surface. According to the pouring type modified ardealite concrete road construction system, the construction process that the modified ardealite quick-hardening cementing material is stirred to produce concrete on the road construction site and is paved on the road surface at the same time is achieved, construction simplification is facilitated, the strength is improved, the construction period is shortened, and the cost is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of modified phosphogypsum concrete road pouring construction equipment, in particular to a pouring type modified phosphogypsum concrete road construction system. Background Art

[0002] In the existing technology, when carrying out road construction, it is necessary to first transport the modified phosphogypsum concrete produced and mixed in the factory to the road construction site, and then carry out paving and compacting operations on the road. The mixed modified phosphogypsum concrete is inconvenient to transport, and the entire construction process is inconvenient to operate. Summary of the Invention

[0003] The present invention provides a cast-type modified phosphogypsum concrete road construction system, which is used to solve the problem in the prior art that the modified phosphogypsum concrete needs to be produced and mixed in a factory, transported to the road construction site, and then paved and compacted on the road, resulting in inconvenient operation of the entire construction process.

[0004] The present invention provides a pouring type modified phosphogypsum concrete road construction system, comprising: an automatic batching and continuous supply system, an automatic mixing and spreading system, and an automatic vibrating, leveling and finishing system; The automatic batching and continuous supply system is used to batch raw materials including at least modified phosphogypsum and aggregate to obtain modified phosphogypsum concrete raw materials; The automatic mixing and distributing system is used to mix the modified phosphogypsum concrete raw materials to form modified phosphogypsum concrete, and to pour the modified phosphogypsum concrete on the road surface; The automatic vibrating, leveling and finishing system is used to spread and shape the modified phosphogypsum concrete on the road surface.

[0005] According to the pouring type modified phosphogypsum concrete road construction system of the present invention, the automatic batching and continuous supply system includes: A plurality of feeding devices, each of which is used to hold a type of raw material and input the corresponding type of raw material into the automatic mixing and distributing system; A feeding control device is respectively connected to each of the feeding devices for controlling the feeding rate and start and stop of each of the feeding devices according to a preset ratio; Among them, the feeding equipment includes aggregate supply equipment, modified phosphogypsum supply equipment, mixing water supply equipment and admixture supply equipment; among them, the weight ratio of mixing water in the modified phosphogypsum concrete raw materials is not less than 25% and not more than 50%; the weight ratio of retarder in the modified phosphogypsum concrete raw materials is less than or equal to 0.5%.

[0006] According to the pouring modified phosphogypsum concrete road construction system of the present invention, the feeding equipment includes: a storage device, a first conveying mechanism, a metering device, and a second conveying mechanism connected in sequence; the first conveying mechanism, the metering device, and the second conveying mechanism are respectively connected to the feeding control device for communication; The storage device is used to store the raw materials; the first conveying mechanism is used to transfer the raw materials in the storage device to the metering device, the metering device is used to weigh the raw materials contained in it, and the second conveying mechanism is used to transfer the raw materials in the metering device to the automatic mixing and distributing system; The feeding control device is used to control the conveying speed and start and stop of the first conveying mechanism and the second conveying mechanism respectively according to the weight information fed back by the metering device.

[0007] According to the pouring type modified phosphogypsum concrete road construction system of the present invention, the automatic mixing and distributing system includes: First bracket; A mixing bin is rotatably arranged on the first bracket around a horizontal axis, and the mixing bin is provided with an inlet and outlet; a rotary drive mechanism, disposed on the first bracket and connected to the mixing chamber, to drive the mixing chamber to rotate around a horizontal axis between a first position and a second position; When the mixing bin is located at the first position, the inlet and outlet are set upward to receive the raw materials supplied by the automatic batching and continuous supply system; when the mixing bin is located at the second position, the inlet and outlet are set downward to pour the modified phosphogypsum concrete on the road surface.

[0008] According to the pouring type modified phosphogypsum concrete road construction system of the present invention, the automatic vibrating and smoothing system comprises: Second bracket; a leveling device, provided on the second bracket, for leveling the modified phosphogypsum concrete on the road surface; The flattening and light-collecting device is arranged on the second bracket and is used to press the modified phosphogypsum concrete that has been flattened.

[0009] According to the pouring modified phosphogypsum concrete road construction system of the present invention, the leveling device includes: a leveling comb slidably disposed on the second bracket along the width direction of the road; The sliding drive mechanism is provided on the second bracket and is in driving connection with the leveling tooth comb to drive the leveling tooth comb to slide along the width direction of the road to scrape the modified phosphogypsum concrete on the road surface.

[0010] According to the pouring type modified phosphogypsum concrete road construction system of the present invention, the flattening and light collecting device comprises: A pressing mechanism is provided on the second bracket and is configured to be disposed toward the road surface; The vibration mechanism is in transmission connection with the pressing mechanism to drive the pressing mechanism to vibrate and press the modified phosphogypsum concrete on the road surface.

[0011] According to the pouring type modified phosphogypsum concrete road construction system of the present invention, the automatic vibrating and smoothing system further comprises two side formworks and a crossbar device; The two side formworks and the cross device are respectively arranged on the second bracket, the two side formworks are arranged opposite to each other along the width direction of the road, the cross device is arranged between the two side formworks, and a pouring interval for pouring by the automatic mixing and distributing system is formed between the two side formworks, the cross device and the formed modified phosphogypsum concrete surface.

[0012] According to the cast-type modified phosphogypsum concrete road construction system of the present invention, the flattening and light-collecting device and the leveling device are arranged along the forward direction of road construction.

[0013] The pouring modified phosphogypsum concrete road construction system according to the present invention further includes a self-propelled system; The automatic batching and continuous supply system, the automatic mixing and spreading system and the automatic vibrating, leveling and finishing system are all arranged on the self-propelled system, and the self-propelled system is used to move along the forward direction of road construction.

[0014] The cast-type modified phosphogypsum concrete road construction system provided by the present invention integrates an automatic batching and continuous supply system, an automatic mixing and distributing system, and an automatic vibrating, smoothing, and finishing system into a whole. The automatic batching and continuous supply system is used to mix various raw materials into modified phosphogypsum concrete raw materials according to preset proportions and supply them to the automatic mixing and distributing system. The automatic mixing and distributing system is used to stir the modified phosphogypsum concrete raw materials to form modified phosphogypsum concrete and then pour it on the road surface to be constructed. The automatic vibrating, smoothing, and finishing system is used to spread and shape the modified phosphogypsum concrete on the road surface to form a flat road structure layer with reliable strength. This realizes a construction process in which the modified phosphogypsum concrete is mixed and produced at the road construction site and spread on the road surface simultaneously, eliminating the need to tow and transport the modified phosphogypsum concrete from the modified phosphogypsum concrete plant to the road construction site for construction. This effectively solves the problem of the inconvenience of the entire construction process, which requires the modified phosphogypsum concrete produced and mixed in the factory to be transported to the road construction site and then spread and compacted on the road. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the present invention or the prior art, a brief introduction is given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0016] Figure 1 Schematic diagram of a cast-type modified phosphogypsum concrete road construction system provided by an embodiment of the present invention.

[0017] Figure 2 Schematic diagram of an automatic mixing and distributing system provided in an embodiment of the present invention.

[0018] Figure 3 Schematic diagram of a leveling device provided in an embodiment of the present invention.

[0019] Figure 4 Schematic diagram of a flattened light collecting device provided in an embodiment of the present invention.

[0020] Reference numerals: 1. Casting modified phosphogypsum concrete road construction system; 11. Automatic batching and continuous supply system; 111. Feeding equipment; 1111. Storage device; 1112. First conveying mechanism; 1113. Measuring device; 1114. Second conveying mechanism; 112. Aggregate supply equipment; 113. Modified phosphogypsum supply equipment; 114. Mixing water supply equipment; 12. Automatic mixing and distributing system; 121. First bracket; 122. Mixing chamber; 1221. Inlet and outlet; 123. Rotary drive mechanism; 13. Automatic vibrating and smoothing system; 131. Second bracket; 132. Leveling device; 1321. Leveling comb; 1322. Sliding drive mechanism; 133. Flattening and smoothing device; 1331. Pressing mechanism; 1332. Vibrating mechanism; 134. Side template; 135. Crossbar device. DETAILED DESCRIPTION

[0021] To make the objectives, technical solutions, and advantages of the present invention more clear, the technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0022] The following combination Figures 1-4 The present invention describes a pouring type modified phosphogypsum concrete road construction system.

[0023] like Figure 1 As shown, the present invention provides a cast-type modified phosphogypsum concrete road construction system 1, comprising: an automatic batching and continuous supply system 11, an automatic mixing and distributing system 12, and an automatic vibrating, smoothing, and finishing system 13. The automatic batching and continuous supply system 11 is used to batch raw materials including at least modified phosphogypsum and aggregate to obtain modified phosphogypsum concrete raw materials. The automatic mixing and distributing system 12 is used to stir the modified phosphogypsum concrete raw materials to form modified phosphogypsum concrete, and then cast the modified phosphogypsum concrete on the road surface. The automatic vibrating, smoothing, and finishing system 13 is used to spread and shape the modified phosphogypsum concrete on the road surface.

[0024] In this embodiment, it can be understood that in order to produce modified phosphogypsum concrete, it is necessary to mix a variety of raw materials (including but not limited to cementitious materials, aggregates, water, admixtures, other admixtures, etc.) in a certain ratio to form modified phosphogypsum concrete raw materials, and then stir the modified phosphogypsum concrete raw materials to form modified phosphogypsum concrete. The automatic batching and continuous supply system 11 of this embodiment can buffer a certain amount of raw materials including modified phosphogypsum and aggregates for preparing modified phosphogypsum concrete raw materials, and can prepare modified phosphogypsum concrete according to a preset ratio. The modified phosphogypsum concrete raw materials are supplied to the automatic mixing and spreading system 12. The automatic mixing and spreading system 12 can mix the modified phosphogypsum concrete raw materials evenly to form fluid modified phosphogypsum concrete, and pour the fluid modified phosphogypsum concrete on the road surface to be constructed. The automatic vibration and finishing system 13 can make the modified phosphogypsum concrete evenly, flatly and densely laid on the road surface to be constructed by scraping, vibrating, pressing and finishing, and form a flat and reliable strength road structure layer after the modified phosphogypsum concrete is solidified.

[0025] The cast-type modified phosphogypsum concrete road construction system 1 provided by the present invention integrates an automatic batching and continuous supply system 11, an automatic mixing and distributing system 12, and an automatic vibrating, smoothing, and finishing system 13 into a whole. The automatic batching and continuous supply system 11 is used to mix various raw materials into modified phosphogypsum concrete raw materials according to preset proportions and supply them to the automatic mixing and distributing system 12. The automatic mixing and distributing system 12 is used to mix the modified phosphogypsum concrete raw materials to form modified phosphogypsum concrete and then pour it on the road surface to be constructed. The automatic vibrating, smoothing, and finishing system 13 is used to spread and shape the modified phosphogypsum concrete on the road surface to form a flat and reliable road structure layer, thereby realizing a construction process in which the modified phosphogypsum concrete is mixed and produced at the road construction site and spread on the road surface simultaneously, eliminating the need to tow and transport the modified phosphogypsum concrete from the modified phosphogypsum concrete plant to the road construction site for construction. This effectively solves the problem of the need to transport the modified phosphogypsum concrete produced and mixed in the factory to the road construction site and then spread and compact it on the road, which is inconvenient to operate the entire construction process.

[0026] Traditional construction methods require factory mixing of modified phosphogypsum concrete. To prevent the rapid setting of the rapidly hardening concrete, a large amount of working water or a retarder is used within the fluid modified phosphogypsum concrete to slow its setting. The problem with this construction method is that the evaporation of excess water from the modified phosphogypsum concrete affects its strength and softening coefficient, making it unable to meet the strength and water resistance requirements of road structures.

[0027] The cast-type modified phosphogypsum concrete road construction system 1 provided by the present invention integrates functional components such as on-site continuous material supply, pre-proportioning, mixing, pouring, and molding into one, and can carry out construction processes such as material batching, mixing, pouring and molding at the construction site. It can carry out road construction for modified phosphogypsum concrete containing fast-hardening (setting time ≤ 30 minutes) modified phosphogypsum structural materials. There is no need to add excessive water or retarder to the modified phosphogypsum concrete, which improves construction efficiency and is beneficial to improving the stability, durability and water resistance of structural materials. Various indicators and performances are greatly improved, and the construction period is greatly shortened.

[0028] Specifically, in some embodiments, Figure 1 As shown, the automatic batching and continuous supply system 11 includes multiple feeding devices 111, each of which is used to hold a type of raw material and feed the corresponding type of raw material into the automatic mixing and distribution system 12. The feeding devices 111 are used to feed the corresponding type of modified phosphogypsum concrete raw material into the automatic mixing and distribution system 12. A feeding control device (not shown) is communicatively connected to each feeding device 111 and is used to control the feeding rate and start and stop of each feeding device 111 according to a preset mixing ratio.

[0029] In this embodiment, a plurality of feeding devices 111 are provided, each feeding device 111 containing one type of raw material. The feeding devices 111 can independently input the corresponding type of raw material into the automatic mixing and distributing system 12. The raw materials can be mixed in the automatic mixing and distributing system 12 to form modified phosphogypsum concrete raw materials. At the same time, the feeding control device can start and stop each feeding device 111 or adjust the feeding rate of each feeding device 111 according to a preset ratio to control the amount of raw material supplied by each feeding device 111 to the automatic mixing and distributing system 12 per unit time, so that the content of each component of the modified phosphogypsum concrete raw material in the automatic mixing and distributing system 12 meets production requirements.

[0030] Specifically, in some embodiments, Figure 1As shown, the feeding device 111 includes: a storage device 1111, a first conveying mechanism 1112, a metering device 1113, and a second conveying mechanism 1114, which are connected in sequence. The first conveying mechanism 1112, the metering device 1113, and the second conveying mechanism 1114 are each communicatively connected to a feeding control device. The storage device 1111 is used to store raw materials. The first conveying mechanism 1112 is used to transfer raw materials from the storage device 1111 to the metering device 1113, which is used to weigh the raw materials contained therein. The second conveying mechanism 1114 is used to transfer the raw materials from the metering device 1113 to the automatic mixing and distribution system 12. The feeding control device is used to control the conveying rate and start and stop of the first conveying mechanism 1112 and the second conveying mechanism 1114 based on the weight information fed back by the metering device 1113.

[0031] In this embodiment, the storage device 1111 is used to receive and store corresponding types of raw materials input from the outside, the first conveying mechanism 1112 is used to transfer the raw materials in the storage device 1111 to the metering device 1113 for weighing, and the second conveying mechanism 1114 can transfer the raw materials in the metering device 1113 to the automatic mixing and distribution system 12 for mixing with other raw materials to form modified phosphogypsum concrete raw materials, and be stirred in the automatic mixing and distribution system 12 to form fluid modified phosphogypsum concrete. During the conveying process, the feeding control device can monitor the changes in weight information fed back by each metering device 1113 to obtain the weight changes of the raw materials in each metering device 1113, and then monitor in real time the weight of various raw materials conveyed to the automatic mixing and distributing system 12 by each second conveying mechanism 1114. When there is a deviation between the ratio of various modified phosphogypsum concrete raw materials and the preset ratio, the conveying rate of the first conveying mechanism 1112 and the second conveying mechanism 1114 is adjusted or the first conveying mechanism 1112 and the second conveying mechanism 1114 are started and stopped, so that the weight ratio of various raw materials conveyed to the automatic mixing and distributing system 12 can meet the production requirements of the modified phosphogypsum concrete, so that the produced modified phosphogypsum concrete can better meet the construction requirements in the entire construction process.

[0032] It can be understood that the feeding equipment 111 for conveying different types of raw materials can adopt storage devices 1111, first conveying mechanisms 1112, metering devices 1113 and second conveying mechanisms 1114 of different structures.

[0033] It is understandable that when constructing a road, the cast-type modified phosphogypsum concrete road construction system 1 needs to continuously advance along the direction in which the road extends to complete the construction of the entire road.

[0034] In a specific embodiment, Figure 1As shown, the automatic batching and continuous supply system 11 includes three sets of feeding equipment 111, namely, aggregate supply equipment 112, modified phosphogypsum supply equipment 113 and mixing water supply equipment 114. Among them, the aggregate supply equipment 112 is along the forward direction of the road construction (such as Figure 1 The aggregate supply device 112 includes a storage device 1111, a first conveying mechanism 1112, a metering device 1113, and a second conveying mechanism 1114 arranged in a horizontal direction. The storage device 1111 is a storage bin, the first conveying mechanism 1112 is a conveyor belt, the metering device 1113 includes a metering bin, an electronic balance or a weight sensor can be provided at the bottom of the metering bin to weigh the aggregate, and the second conveying mechanism 1114 is a transmission belt. The aggregate supply device 112 is used to transport the aggregate to the automatic mixing and distributing system 12. Optionally, a hopper is further provided in front of the storage bin, and a conveyor belt is provided between the hopper and the storage bin. The hopper is used to receive aggregates transported by external transport vehicles, and the aggregates are transported to the storage bin via the transmission belt.

[0035] The modified phosphogypsum supply equipment 113, the mixing water supply equipment 114 and the aggregate supply equipment 112 are arranged side by side. The modified phosphogypsum supply equipment 113 includes a storage device 1111, a first conveying mechanism 1112, a metering device 1113 and a second conveying mechanism 1114 arranged in a horizontal direction, wherein the storage device 1111 is a storage tank, the first conveying mechanism 1112 is a screw feeding mechanism, the metering device 1113 includes a metering bin, an electronic balance or a weight sensor can be provided at the bottom of the metering bin to weigh the modified phosphogypsum, and the second conveying mechanism 1114 is a screw feeding mechanism. The modified phosphogypsum supply equipment 113 is used to transport the modified phosphogypsum to Automatic mixing and distributing system 12; mixing water supply equipment 114 includes a horizontally arranged storage device 1111, a first conveying mechanism 1112, a metering device 1113, and a second conveying mechanism 1114. Storage device 1111 is a water tank; first conveying mechanism 1112 is a water pipeline; metering device 1113 includes a metering tank. An electronic balance or weight sensor can be installed at the bottom of the metering tank to weigh the modified phosphogypsum, or a liquid level meter can be installed inside the metering tank to measure the liquid level. Second conveying mechanism 1114 is a screw feeder. Mixing water supply equipment 114 is used to deliver water to automatic mixing and distributing system 12. Optionally, feeding equipment 111 also includes an admixture device (not shown) for adding admixtures to automatic mixing and distributing system 12. Admixtures are substances (including but not limited to water reducers and early strength agents) added to improve and adjust the properties of modified phosphogypsum concrete.

[0036] Specifically, the weight ratio of mixing water in the modified phosphogypsum concrete raw material of this embodiment is not less than 25% and not more than 50%; the weight ratio of the retarder in the modified phosphogypsum concrete raw material is less than or equal to 0.5%.

[0037] It is understandable that in the prior art, modified phosphogypsum concrete raw materials using modified phosphogypsum as a cementitious material require the addition of a large amount of retarder or a large amount of mixing water (weight ratio of 60%-90%) to delay the solidification of the modified phosphogypsum concrete raw materials. However, after the modified phosphogypsum concrete raw materials are solidified and formed, excessive retarder or mixing water will affect the physical and mechanical properties of the formed structural materials. The cast-type modified phosphogypsum concrete road construction system 1 of the present application integrates functional components such as on-site continuous material supply, pre-proportioning, mixing, pouring, and molding into one, greatly shortening the construction time from batching, mixing to pouring, thereby significantly reducing the weight ratio of mixing water and retarder required during the mixing process, and thus making the modified phosphogypsum concrete raw materials have better structural strength after solidification and forming, and their 2h strength can reach 90% or more of the design strength, greatly shortening the construction period.

[0038] Alternatively, in other embodiments, the feeding equipment 111 may include a modified phosphogypsum powder feeding equipment, an aggregate equipment, an admixture equipment, and a mixing water supply equipment 114. The modified phosphogypsum powder feeding equipment is used to supply modified phosphogypsum powder to the automatic mixing and distributing system 12, the aggregate equipment is used to supply aggregate to the automatic mixing and distributing system 12, the admixture equipment supplies admixture to the automatic mixing and distributing system 12, and the mixing water supply equipment 114 is used to transport water to the automatic mixing and distributing system 12.

[0039] Optionally, in some embodiments, there are multiple automatic mixing and distributing systems 12, and each feeding device 111 has a first conveying mechanism 1112, a metering device 1113, and a second conveying mechanism 1114 corresponding to each automatic mixing and distributing system 12. The first conveying mechanism 1112 can transfer raw materials from the storage device 1111 to the corresponding metering device 1113, and the second conveying mechanism 1114 can transfer raw materials from the corresponding metering device 1113 to the corresponding automatic mixing and distributing system 12. This allows each feeding device 111 to independently control each automatic mixing and distributing system 12, and each automatic mixing and distributing system 12 can independently mix and pour materials. While one automatic mixing and distributing system 12 is receiving and mixing raw materials, another automatic mixing and distributing system 12 can be pouring materials. After the corresponding process is completed, the two automatic mixing and distributing systems 12 exchange processes, which is beneficial for improving construction efficiency.

[0040] Specifically, in some embodiments, Figure 1 and Figure 2As shown, the automatic mixing and distributing system 12 includes a first support 121, a mixing chamber 122, and a rotary drive mechanism 123. The mixing chamber 122 is rotatably mounted on the first support 121 about a horizontal axis and is provided with an inlet and outlet 1221. The rotary drive mechanism 123 is mounted on the first support 121 and is in transmission connection with the mixing chamber 122 to drive the mixing chamber 122 to rotate about the horizontal axis between a first position and a second position. When the mixing chamber 122 is in the first position, the inlet and outlet 1221 face upward to receive raw materials supplied by the automatic batching and continuous supply system 11. When the mixing chamber 122 is in the second position, the inlet and outlet 1221 face downward to allow the modified phosphogypsum concrete to be poured onto the road surface.

[0041] In this embodiment, the first bracket 121 is used to install and support the remaining components, wherein the mixing chamber 122 can rotate around a horizontal axis under the drive of the rotary drive mechanism 123 to realize the process of receiving raw materials, mixing modified phosphogypsum concrete raw materials, and pouring modified phosphogypsum concrete. Specifically, when receiving raw materials supplied by the automatic batching and continuous supply system 11, it is necessary to first rotate the mixing chamber 122 to the first position so that the inlet and outlet 1221 faces upward and directly faces the discharge end of the automatic batching and continuous supply system 11 to receive various types of raw materials supplied by the automatic batching and continuous supply system 11. It can be understood that since the inlet and outlet 1221 faces upward and the mixing chamber 122 has good sealing performance, water can be introduced into the mixing chamber 122 first, and then other raw materials can be introduced into the mixing chamber 122. Water can prevent other modified phosphogypsum concrete raw materials from adhering to the wall surface of the mixing chamber 122 and affecting the mixing effect. After receiving the raw materials, the mixing bin 122 can rotate under the drive of the rotary drive mechanism 123 to mix the modified phosphogypsum concrete raw materials and form modified phosphogypsum concrete. When the mixing bin 122 rotates to the second position, the inlet and outlet 1221 faces downward, and the fluid modified phosphogypsum concrete is discharged from the inlet and outlet 1221 and poured on the road surface to be constructed.

[0042] In some embodiments, as Figure 1 、 Figure 3 and Figure 4 As shown, the automatic vibrating, leveling, and finishing system 13 includes a second bracket 131, a leveling device 132, and a flattening and finishing device 133. The leveling device 132 is mounted on the second bracket 131 and is used to level the modified phosphogypsum concrete on the road surface. The flattening and finishing device 133 is also mounted on the second bracket 131 and is used to press the leveled modified phosphogypsum concrete.

[0043] In this embodiment, the second bracket 131 is used to install and support the remaining components of the automatic vibrating and leveling system 13, wherein the leveling device 132 is used to scrape the modified phosphogypsum concrete along the road surface after the modified phosphogypsum concrete is poured on the road surface to be constructed, so that the modified phosphogypsum concrete can be evenly and flatly covered on the road surface to be constructed, and the flattening and leveling device 133 is used to press on the modified phosphogypsum concrete from directly above, so that the modified phosphogypsum concrete becomes denser during the setting process, and the density and strength of the road structure layer formed after the modified phosphogypsum concrete is solidified can meet the construction requirements.

[0044] Specifically, in some embodiments, Figure 1 and Figure 3 As shown, the leveling device 132 includes a leveling comb 1321 and a sliding drive mechanism 1322. The leveling comb 1321 is slidably mounted on the second bracket 131 along the width of the road. The sliding drive mechanism 1322 is mounted on the second bracket 131 and is in transmission connection with the leveling comb 1321 to drive the leveling comb 1321 to slide along the width of the road to level the modified phosphogypsum concrete on the road surface.

[0045] In this embodiment, it can be understood that the width direction of the road is a horizontal direction perpendicular to the direction in which the road extends (e.g. Figures 1 to 4 The leveling tooth comb 1321 of this embodiment can slide back and forth along the width direction of the road on the sliding drive mechanism 1322. The bottom of the leveling tooth comb 1321 has a plurality of comb teeth arranged at intervals, and the comb teeth are in contact with the modified phosphogypsum concrete of the road surface so that the modified phosphogypsum concrete of the road surface is evenly covered on the road surface area to be constructed.

[0046] Specifically, in some embodiments, Figure 1 and Figure 4 As shown, the flattening and light-collecting device 133 includes a pressing mechanism 1331 and a vibrating mechanism 1332. The pressing mechanism 1331 is mounted on the second bracket 131 and is configured to face the road surface. The vibrating mechanism 1332 is in transmission connection with the pressing mechanism 1331 to drive the pressing mechanism 1331 to vibrate and compress the modified phosphogypsum concrete on the road surface.

[0047] In this embodiment, the pressing mechanism 1331 can be a pressing plate or a pressing block that can cover the road surface area to be constructed. The pressing mechanism 1331 is used to be pressed on the surface of the modified phosphogypsum concrete and continuously vibrate under the drive of the vibration mechanism 1332. During the vibration process, the pressing mechanism 1331 continuously impacts the upper surface of the modified phosphogypsum concrete layer to make the modified phosphogypsum concrete layer denser, so that the density and strength of the road structure layer formed after the modified phosphogypsum concrete solidifies can meet the construction requirements.

[0048] Specifically, in some embodiments, the flattening and light-collecting device 133 and the leveling device 132 are arranged along the forward direction of the road construction.

[0049] It is understandable that when constructing a road, construction is usually carried out in sections along the direction in which the road extends, and the cast-type modified phosphogypsum concrete road construction system 1 needs to continuously advance along the direction in which the road extends to complete the construction of the entire road. In this embodiment, by arranging the flattening and light-collecting device 133 and the leveling device 132 along the forward direction of the road construction, when the cast-type modified phosphogypsum concrete road construction system 1 advances along the road for construction, the leveling device 132 first moves to the top of the road area that has not yet been completed to level the modified phosphogypsum concrete, and then the cast-type modified phosphogypsum concrete road construction system 1 continues to move forward, and the flattening and light-collecting device 133 moves to the top of the modified phosphogypsum concrete area leveled by the leveling device 132, compacting the modified phosphogypsum concrete in this area. At the same time, the leveling device 132 can synchronously level the modified phosphogypsum concrete in the area in front of this area, thereby improving the efficiency of leveling and self-compacting.

[0050] In some embodiments, as Figure 1 、 Figure 3 and Figure 4 As shown, the automatic vibrating and smoothing system 13 also includes two side templates 134 and a cross-piece 135. The two side templates 134 and the cross-piece 135 are respectively arranged on the second bracket 131. The two side templates 134 are arranged opposite to each other along the width direction of the road. The cross-piece 135 is arranged between the two side templates 134. A pouring interval for pouring by the automatic mixing and distributing system 12 is formed between the two side templates 134, the cross-piece 135, and the side surfaces of the formed modified phosphogypsum concrete. One side template 134 is used to abut against one side of the modified phosphogypsum concrete on the road surface, and the other side template 134 is used to abut against the other side of the modified phosphogypsum concrete on the road surface.

[0051] In this embodiment, two opposite side formworks 134 are arranged on the second bracket 131 along the width direction of the road. The two side formworks 134, the cross piece 135 and the formed modified phosphogypsum concrete can enclose a pouring interval. The pouring port for the automatic mixing and distributing system 12 is arranged above the pouring interval, so that when the automatic mixing and distributing system 12 is pouring, the modified phosphogypsum concrete flows into the pouring interval. The side formworks 134 can be limited in the width direction of the road, and the cross piece 135 and the formed modified phosphogypsum concrete layer can be limited in the extension of the road to prevent the modified phosphogypsum concrete from flowing into the road surface outside the current construction area along the width direction of the road, thereby resulting in insufficient amount of modified phosphogypsum concrete in the current construction area, and further resulting in the formed road structure layer not meeting the construction requirements.

[0052] In some embodiments, the cast-type modified phosphogypsum concrete road construction system 1 further includes a self-propelled system (not shown). The automatic batching and continuous supply system 11, the automatic mixing and distribution system 12, and the automatic vibrating, leveling, and finishing system 13 are all provided on the self-propelled system, which is configured to move along the direction of road construction.

[0053] In this embodiment, the self-propelled system is used to install and carry the automatic batching and continuous supply system 11, the automatic mixing and spreading system 12 and the automatic vibrating, smoothing and finishing system 13, and can move along the forward direction of road construction, so that the automatic batching and continuous supply system 11 can reach the automatic mixing and spreading system 12 at any time, and the automatic mixing and spreading system 12 and the automatic vibrating, smoothing and finishing system 13 pass through the road surface to be constructed in turn. After the automatic mixing and spreading system 12 casts the road surface to be constructed, the automatic vibrating, smoothing and finishing system 13 spreads, levels and shapes the cast modified phosphogypsum concrete to form a road structure layer, making construction more convenient and efficient.

[0054] It is understandable that, because the present invention uses modified phosphogypsum as the cementitious material in the modified phosphogypsum concrete, the modified phosphogypsum concrete can quickly solidify and form. After the modified phosphogypsum concrete of the road surface in a certain area solidifies and forms, the resulting road surface structure can serve as the construction foundation for the unconstructed area. The entire construction system can be moved in any direction, forward, backward, left, or right, from the forming area to facilitate construction in adjacent areas of the formed road surface structure. Therefore, in this embodiment, the forward direction of road construction does not necessarily refer to the direction in which the road extends, but can refer to any direction, forward, backward, left, or right, of the formed road structure layer area.

[0055] In summary, the road construction system of the present invention utilizes modified phosphogypsum as a cementing material, along with aggregate, mixing water, and other admixtures. It integrates equipment for feeding, batching, mixing, and casting, achieving continuous on-site feeding and integrating pre-proportioning, mixing, and casting processes. Compared to traditional concrete construction equipment, the system requires less equipment and space, and eliminates the cumbersome process of transporting the concrete mix to the site for casting. This overcomes the impact of the rapid hardening properties of modified phosphogypsum as a cementing material (setting time ≤ 30 minutes) on construction, while also leveraging these properties to rapidly form the pavement structure. Furthermore, the system effectively reduces the amount of mixing water in the modified phosphogypsum concrete raw material, significantly shortening the construction period while improving the physical and mechanical properties of the resulting pavement structure, resulting in significant economic benefits.

[0056] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A pouring modified phosphogypsum concrete road construction system, characterized in that: include: Automatic batching and continuous supply system, automatic mixing and spreading system and automatic vibrating, leveling and finishing system; The automatic batching and continuous supply system is used to batch raw materials including at least modified phosphogypsum and aggregate to obtain modified phosphogypsum concrete raw materials; The automatic mixing and distributing system is used to mix the modified phosphogypsum concrete raw materials to form modified phosphogypsum concrete, and to pour the modified phosphogypsum concrete on the road surface; The automatic vibrating, leveling and finishing system is used to spread and shape the modified phosphogypsum concrete on the road surface.

2. The pouring modified phosphogypsum concrete road construction system according to claim 1, characterized in that: The automatic batching and continuous supply system includes: A plurality of feeding devices, each of which is used to hold a type of raw material and input the corresponding type of raw material into the automatic mixing and distributing system; A feeding control device is respectively connected to each of the feeding devices for controlling the feeding rate and start and stop of each of the feeding devices according to a preset ratio; Among them, the feeding equipment includes aggregate supply equipment, modified phosphogypsum supply equipment, mixing water supply equipment and admixture supply equipment; among them, the weight ratio of mixing water in the modified phosphogypsum concrete raw materials is not less than 25% and not more than 50%; the weight ratio of retarder in the modified phosphogypsum concrete raw materials is less than or equal to 0.5%.

3. The pouring type modified phosphogypsum concrete road construction system according to claim 2, characterized in that: The feeding device includes: a storage device, a first conveying mechanism, a metering device and a second conveying mechanism connected in sequence; the first conveying mechanism, the metering device and the second conveying mechanism are respectively connected to the feeding control device for communication; The storage device is used to store the raw materials; the first conveying mechanism is used to transfer the raw materials in the storage device to the metering device, the metering device is used to weigh the raw materials contained in it, and the second conveying mechanism is used to transfer the raw materials in the metering device to the automatic mixing and distributing system; The feeding control device is used to control the conveying speed and start and stop of the first conveying mechanism and the second conveying mechanism respectively according to the weight information fed back by the metering device.

4. The pouring type modified phosphogypsum concrete road construction system according to claim 2, characterized in that: The automatic mixing and distributing system includes: First bracket; A mixing bin is rotatably arranged on the first bracket around a horizontal axis, and the mixing bin is provided with an inlet and outlet; a rotary drive mechanism, disposed on the first bracket and connected to the mixing chamber, to drive the mixing chamber to rotate around a horizontal axis between a first position and a second position; When the mixing bin is located at the first position, the inlet and outlet are set upward to receive the raw materials supplied by the automatic batching and continuous supply system; when the mixing bin is located at the second position, the inlet and outlet are set downward to pour the modified phosphogypsum concrete on the road surface.

5. The pouring type modified phosphogypsum concrete road construction system according to claim 1, characterized in that: The automatic vibrating and leveling finishing system includes: Second bracket; a leveling device, provided on the second bracket, for leveling the modified phosphogypsum concrete on the road surface; The flattening and light-collecting device is arranged on the second bracket and is used to press the modified phosphogypsum concrete that has been flattened.

6. The pouring type modified phosphogypsum concrete road construction system according to claim 5, characterized in that: The leveling device comprises: a leveling comb slidably disposed on the second bracket along the width direction of the road; The sliding drive mechanism is provided on the second bracket and is in driving connection with the leveling tooth comb to drive the leveling tooth comb to slide along the width direction of the road to scrape the modified phosphogypsum concrete on the road surface.

7. The pouring type modified phosphogypsum concrete road construction system according to claim 5, characterized in that: The flattening and light-collecting device comprises: A pressing mechanism is provided on the second bracket and is configured to be disposed toward the road surface; The vibration mechanism is in transmission connection with the pressing mechanism to drive the pressing mechanism to vibrate and press the modified phosphogypsum concrete on the road surface.

8. The pouring type modified phosphogypsum concrete road construction system according to claim 5, characterized in that: The automatic vibrating and smoothing system also includes two side templates and a crossbar device; The two side formworks and the cross device are respectively arranged on the second bracket, and the two side formworks are arranged opposite to each other along the width direction of the road. The cross device is arranged between the two side formworks. A pouring interval for pouring by the automatic mixing and distributing system is formed between the two side formworks, the cross device and the side surfaces of the formed modified phosphogypsum concrete.

9. The pouring type modified phosphogypsum concrete road construction system according to claim 5, characterized in that: The flattening and light-collecting device and the leveling device are arranged along the forward direction of road construction.

10. The pouring type modified phosphogypsum concrete road construction system according to claim 1, characterized in that: It also includes a self-propelled system; The automatic batching and continuous supply system, the automatic mixing and spreading system and the automatic vibrating, leveling and finishing system are all arranged on the self-propelled system, and the self-propelled system is used to move along the forward direction of road construction.

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