A modified phosphogypsum-based backfilling device and method for platform backfilling

Abstract

This application relates to the field of bridge construction technology, specifically disclosing a modified phosphogypsum-based abutment backfilling device. The device includes a transport vehicle and multiple storage bins mounted on the vehicle for holding fillers mixed with phosphogypsum. Each storage bin has a discharge port, and the projections of these discharge ports on the ground are arranged sequentially along the length of the transport vehicle. Each discharge port has a rotating and opening / closing plate, and the transport vehicle is equipped with an opening / closing mechanism to drive the plates. Different storage bins contain different fillers. As the transport vehicle moves along the location requiring filler, the opening / closing mechanism opens the different plates sequentially, allowing the different fillers from the different storage bins to be discharged in sequence. Because the different fillers are discharged in a specific order, they are laid sequentially at the locations requiring filler. This method allows for the simultaneous laying of multiple layers of filler, significantly shortening the construction cycle and improving construction efficiency.

Description

Technical Field

[0001] This application relates to the field of bridge construction technology, and in particular to a backfilling device and method for abutments based on modified phosphogypsum. Background Technology

[0002] In bridge construction, varying degrees of settlement and cracking of the road surface at the backfill of the abutment is a common problem. This not only causes vehicles to slow down, resulting in jumping and impact when passing over them, making drivers and passengers feel uncomfortable and potentially leading to traffic accidents, but also imposes additional impact loads on the bridge and road surface, reducing the service life of the bridge.

[0003] Backfill material is generally a permeable material with many pores, which makes it prone to settlement, causing a height difference between the bridge abutment and the roadbed, and resulting in bridge abutment slab settlement.

[0004] To optimize and improve this defect, related technologies employ a multi-layer backfilling process, using different fillers for layered backfilling to minimize filler settlement.

[0005] Among the aforementioned technologies, although the layered backfilling process can reduce the settlement of the fill material, it requires repeated construction of multiple layers of fill material, that is, after backfilling one layer of fill material, the next layer of fill material is backfilled. This backfilling method is relatively complicated and has the disadvantage of long construction cycle, resulting in low overall construction efficiency. Summary of the Invention

[0006] To improve the efficiency of backfilling, this application provides a backfilling device and method based on modified phosphogypsum.

[0007] This application provides a backfill device for abutments based on modified phosphogypsum, which adopts the following technical solution:

[0008] A backfilling device for a platform based on modified phosphogypsum includes a transport vehicle and multiple storage bins mounted on the transport vehicle for holding filler mixed with phosphogypsum. Each storage bin has a discharge port, and the projections of the multiple discharge ports on the ground are arranged sequentially along the length of the transport vehicle. Each discharge port is provided with a rotatable opening and closing plate, and the transport vehicle is provided with an opening and closing mechanism for driving the opening and closing of the opening and closing plate.

[0009] By adopting the above technical solution, different fillers are stored in different storage bins. When the transport vehicle moves along the location where fillers are needed, the opening and closing mechanism opens different opening plates in sequence, allowing different fillers in different storage bins to fall in one after another. Since the different fillers fall in a specific order, they are laid sequentially at the locations where fillers are needed. This method allows for the simultaneous laying of multiple layers of fillers, significantly shortening the construction cycle and greatly improving construction efficiency compared to layered filler methods.

[0010] Optionally, each of the discharge ports is located at the rear of the transport vehicle, and the distance between each discharge port and the rear of the transport vehicle is different, with the lower-positioned discharge port being closer to the rear of the transport vehicle.

[0011] By adopting the above technical solution, the discharge port at the lowest position and closest to the transport vehicle discharges material first, while the discharge port at the highest position and furthest from the transport vehicle discharges material last. This allows the lowest discharge port to be laid on the ground first, and the upper discharge ports to discharge material later, thus obtaining a layered filling material. This reduces the mixing between different filling materials and makes each layer of filling material as uniform as possible.

[0012] Optionally, the opening and closing mechanism includes an opening and closing assembly that drives each of the opening and closing plates to rotate and open sequentially, a power assembly that provides power to the opening and closing assembly, and a reset assembly that drives each of the opening and closing plates to rotate and reset.

[0013] By adopting the above technical solution, when different fillers need to be fed in layers, the power component is activated, which drives the opening and closing component to move. The opening and closing component first drives the opening and closing plate at the lowest position to open, and then the opening and closing plates at the higher positions open in sequence, realizing the process of sequential material feeding. The reset component can drive each opening and closing plate to rotate back to its original position. When the power component no longer provides power, that is, when the filling is completed, the reset component will drive the opening and closing plate to close, and the material feeding will stop.

[0014] Optionally, three storage bins are provided, and three opening and closing plates are provided corresponding to the storage bins. The opening and closing assembly includes a first rotating shaft, a push wheel, a push rod, a reset component, a rack, a first gear, a first connecting rod, a first rotating rod, a second connecting rod, a second rotating rod, a third connecting rod, and a third rotating rod.

[0015] The first rotating shaft is rotatably mounted on the transport vehicle, and the push wheel is coaxially sleeved on the first rotating shaft. The surface of the push wheel is provided with a plurality of grooves spaced apart.

[0016] The push rod is slidably mounted on the transport vehicle, and the reset member is used to drive one end of the push rod near the push wheel to elastically abut against the wheel surface or groove of the push wheel;

[0017] The rack is fixed to the end of the push rod away from the push wheel and is collinear with the push rod. The first gear is rotatably mounted on the transport vehicle, and the rack and the first gear mesh with each other.

[0018] One end of the first connecting rod is vertically fixed on the rotating shaft of the first gear, and one end of the first rotating rod is vertically fixed on the rotating shaft corresponding to the opening and closing plate. A first sliding groove is provided on the first rotating rod, and the end of the first connecting rod away from the first gear is slidably inserted into the first sliding groove.

[0019] One end of the second connecting rod is vertically fixed on the rotating shaft of the first rotating rod, and one end of the second rotating rod is rotatably mounted on the transport vehicle. A second sliding groove is provided on the second rotating rod, and the end of the second connecting rod away from the first rotating rod is slidably inserted into the second sliding groove.

[0020] A second gear is coaxially fixed on the rotation shaft of the second rotating rod. One end of the third connecting rod is coaxially fixed to the rotation shaft of the corresponding opening and closing plate. A third gear that meshes with the second gear is coaxially fixed on the rotation shaft of the third connecting rod. One end of the third rotating rod is coaxially fixed to the rotation shaft of the corresponding opening and closing plate. A third sliding groove is provided on the third rotating rod. The end of the third connecting rod away from the third gear is slidably inserted into the third sliding groove.

[0021] By adopting the above technical solution, when the power component drives the push wheel to rotate, the end of the push rod will slide from the groove to the edge of the push wheel surface, or slide from the edge of the push wheel surface into the groove. With the reset action of the reset component, the push rod will make continuous reset movements. When the speed of the push wheel is as fast as possible, the end of the push rod can be approximated as abutting against the edge of the push wheel surface. Since the distance from the edge of the push wheel surface to the end of the push rod is closer than the distance from the groove to the end of the push rod, the end of the push rod has a displacement away from the push wheel during the process of sliding from the groove to the edge of the push wheel surface.

[0022] At this time, the rack at the other end of the push rod will drive the first gear to rotate clockwise. The rotation of the first gear will drive the first connecting rod to rotate clockwise. Since the end of the first connecting rod is inserted into the first slide groove, the rotating end of the first connecting rod will drive the first rotating rod to rotate counterclockwise. Since the rotation axis of the first rotating rod is coaxial with the lowest opening and closing plate, the first rotating rod will drive the first opening and closing plate to open. At this time, the filler in the first storage bin will start to fall first.

[0023] When the first rotating rod rotates counterclockwise, it will drive the second connecting rod to rotate counterclockwise. The second connecting rod will drive the second rotating rod to rotate clockwise, causing the second gear to rotate clockwise. The second gear will drive the third gear meshing with it to rotate counterclockwise. At this time, the second opening and closing plate fixed coaxially with the third gear will open at the second time, and the filler in the second storage bin will begin to fall.

[0024] When the third gear rotates counterclockwise, it will drive the third connecting rod to rotate counterclockwise, and the third connecting rod will drive the third rotating rod to rotate counterclockwise. Since the rotating shaft of the third rotating rod is coaxially fixed with the highest opening and closing plate, the third opening and closing plate opens at this time, and the filler in the third storage bin begins to fall.

[0025] In summary, when the power unit is activated, different opening and closing plates can be opened sequentially, thereby completing the sequential and layered filling of different fillers, which greatly improves the efficiency of laying.

[0026] Optionally, the reset assembly includes a plurality of torsion springs respectively sleeved on the rotating shaft of each of the opening and closing plates, each torsion spring being used to provide torque to each of the opening and closing plates to block the discharge port.

[0027] By adopting the above technical solution, when the power component no longer provides power, it means that material does not need to be discharged. Therefore, under the action of the torsion spring, the opening and closing plate will rotate to the angle that blocks the discharge port, so that the filler in the storage bin cannot be discharged temporarily.

[0028] Optionally, the power assembly includes a drive unit fixedly mounted on the transport vehicle, wherein the output shaft of the drive unit is coaxially fixed with the first rotating shaft;

[0029] The transport vehicle is equipped with wheels, axles, and a power mechanism that provides power to the axles at its bottom. The transport vehicle is also equipped with a power switching mechanism that enables the power mechanism and the drive component to provide power to the first rotating shaft respectively.

[0030] By adopting the above technical solution, the driving component can directly drive the first rotating shaft to rotate, thereby realizing the sequential material dropping process. The power switching mechanism can switch the power source of the first rotating shaft, so that the power mechanism that provides power to the wheel axle can provide power to the first rotating shaft, saving energy consumption and achieving another effect: when the transport vehicle moves, the material dropping begins, and when the transport vehicle stops, the material dropping process automatically stops.

[0031] Optionally, the power switching mechanism includes a linkage component for drivingly connecting the power mechanism and the first rotating shaft, and a switching component for disconnecting the driving connection between the power mechanism and the first rotating shaft.

[0032] By adopting the above technical solution, the linkage mechanism can connect the power of the power mechanism with the first rotating shaft, so that the power mechanism can drive the first rotating shaft to rotate. The switching component can cut off the linkage between the power mechanism and the first rotating shaft, so that the power mechanism no longer affects the rotation of the first rotating shaft. At this time, the drive component can control the first rotating shaft independently.

[0033] Optionally, the linkage assembly includes a second rotating shaft, a first fixed plate, a first driving bevel gear, a first driven bevel gear, a connecting shaft, a second fixed plate, a second driving bevel gear, and a second driven bevel gear;

[0034] A fourth gear is coaxially sleeved on the axle, and a fifth gear and a sixth gear are rotatably mounted on the transport vehicle. The fourth gear and the fifth gear mesh, the fifth gear and the sixth gear mesh, and the sixth gear is coaxially fixed with the second rotating shaft.

[0035] The first fixed plate is slidably sleeved on the second rotating shaft. The first driving bevel gear and the first driven bevel gear mesh with each other and are rotatably mounted on the first fixed plate. The first driving bevel gear is coaxial and slidably sleeved on the second rotating shaft. A first protrusion is fixedly installed on the second rotating shaft. A first slot that is adapted to be inserted into the first protrusion is provided on the first driving bevel gear.

[0036] The connecting shaft is coaxially fixed with the first driven bevel gear. The second fixed plate is slidably mounted on the first rotating shaft. The second driving bevel gear and the second driven bevel gear mesh with each other and are rotatably mounted on the second fixed plate. The second driving bevel gear and the connecting shaft are coaxially fixed. The second driven bevel gear is slidably sleeved on the first rotating shaft. A second protrusion is fixedly mounted on the first rotating shaft. A second slot that is adapted to be inserted into the second protrusion is provided on the second driven bevel gear.

[0037] The switching component can drive the first slot and the second slot to be inserted into the corresponding first protrusion and second protrusion.

[0038] By adopting the above technical solution, when the power mechanism drives the axle to rotate, the axle will drive the fourth gear to rotate, the fourth gear will drive the fifth gear to rotate, the fifth gear will drive the sixth gear to rotate, and the sixth gear will drive the second shaft to rotate.

[0039] When the power mechanism is required to provide power to the first rotating shaft, the switching component pushes the connecting shaft to move, so that the first slot on the first driving bevel gear and the first protrusion on the second rotating shaft are engaged and adapted, and the second slot on the second driven bevel gear and the second protrusion on the first rotating shaft are engaged and adapted.

[0040] At this time, the first driving bevel gear and the second rotating shaft are locked together, and the second driven bevel gear and the first rotating shaft are locked together. When the second rotating shaft rotates, it will drive the first driving bevel gear to rotate. The first driving bevel gear will drive the first driven bevel gear to rotate. The first driven bevel gear will drive the connecting shaft to rotate. The connecting shaft will drive the second driving bevel gear to rotate. The second driving bevel gear will drive the second driven bevel gear to rotate. The second driven bevel gear will drive the first rotating shaft to rotate.

[0041] When the power mechanism is not required to provide power to the first rotating shaft, the switching component pulls the connecting shaft to move, so that the first slot on the first driving bevel gear separates from the first protrusion on the second rotating shaft, and the second slot on the second driven bevel gear separates from the second protrusion on the first rotating shaft.

[0042] Optionally, the switching component includes a collar and a telescopic member. The collar is slidably sleeved on the connecting shaft, and the telescopic member is installed at the bottom of the transport vehicle. The telescopic end of the telescopic member is fixedly connected to the collar, and the telescopic direction of the telescopic member is perpendicular to the length direction of the connecting shaft.

[0043] By adopting the above technical solution, when the power mechanism needs to provide power to the first rotating shaft, the telescopic member extends, causing the collar to drive the connecting shaft to move. At this time, the first slot on the first driving bevel gear and the first protrusion on the second rotating shaft are inserted and matched, and the second slot on the second driven bevel gear and the second protrusion on the first rotating shaft are inserted and matched.

[0044] When the power mechanism is not required to provide power to the first rotating shaft, the telescopic component retracts, causing the collar to drive the connecting shaft to move. This causes the first slot on the first driving bevel gear to separate from the first protrusion on the second rotating shaft, and the second slot on the second driven bevel gear to separate from the second protrusion on the first rotating shaft.

[0045] This invention also provides a method for backfilling abutments based on modified phosphogypsum, comprising the following steps:

[0046] S1: Different fillers are placed in different storage bins inside the transport vehicle, namely, lightweight concrete filler with a higher proportion of phosphogypsum than cement and sand, phosphogypsum-ceramsite co-filler with the same proportion of phosphogypsum and ceramsite, and phosphogypsum-sand aggregate filler with a higher proportion of cement and sand than phosphogypsum. The lightweight concrete filler is connected to the discharge port closest to the rear of the transport vehicle, and the phosphogypsum-sand aggregate filler is connected to the discharge port furthest from the rear of the transport vehicle.

[0047] S2: Drive the transport vehicle to move at a constant speed along the location where filling is required;

[0048] S3: Compact the area behind the filler.

[0049] By adopting the above method, when the transport vehicle moves, the lightweight concrete filler can be fed first, followed by the phosphogypsum-ceramsite co-filler, and finally the phosphogypsum-sand and gravel aggregate filler can be fed last, thus completing the layered sequential laying and greatly improving the laying efficiency.

[0050] For areas below 1.5m, lightweight concrete is used for backfilling, with a strength requirement of 0.3-0.5MPa. Since the strength requirement is relatively low here, lightweight concrete with a high proportion of phosphogypsum is used for backfilling to reduce material consumption and save costs. Moreover, phosphogypsum is a waste product after phosphate fertilizer production. Utilizing phosphogypsum in building materials reduces the mining and waste of resources such as sand and stone, saving resources and being environmentally friendly.

[0051] At a height of 0.8-1.5m, this section mainly supports the back of the platform above 0.8m, with a strength requirement of 0.5-0.8MPa. In this case, phosphogypsum-ceramsite synergistic filler is used for laying.

[0052] For depths above 0.8m, in order to improve the strength of the paving, phosphogypsum-sand aggregate filler is directly used, which makes the filler on the surface more effective at clearing blockages and less susceptible to damage.

[0053] All three layers utilize the self-compacting properties of phosphogypsum, reducing the problem of areas where compaction is impossible.

[0054] In summary, this application includes at least one of the following beneficial technical effects:

[0055] 1. Different storage bins store different fillers. When the transport vehicle moves along the location where fillers are needed, the opening and closing mechanism will open the different opening and closing plates in sequence, allowing the different fillers in the different storage bins to fall in sequence. Since the different fillers fall in sequence, they will be laid in sequence at the location where fillers are needed. This method can lay multiple layers of fillers at the same time. Compared with the layered filler method, it greatly shortens the construction cycle of fillers and greatly improves the construction efficiency.

[0056] 2. The drive unit can directly drive the first rotating shaft to rotate, thereby realizing the sequential material dropping process. The power switching mechanism can switch the power source of the first rotating shaft, so that the power mechanism that provides power to the wheel axle can provide power to the first rotating shaft, saving energy consumption and achieving another effect: when the transport vehicle moves, the material dropping begins, and when the transport vehicle stops, the material dropping process automatically stops. Attached Figure Description

[0057] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0058] Figure 1 This is a schematic diagram of the overall structure of the transport vehicle in the embodiments of this application;

[0059] Figure 2 yes Figure 1 A schematic diagram of the bottom structure of the transport vehicle;

[0060] Figure 3 yes Figure 2 Enlarged view of point A in the middle;

[0061] Figure 4 yes Figure 1 Front view of the transport vehicle;

[0062] Figure 5 yes Figure 4 Enlarged view of point B in the middle.

[0063] Reference numerals: 1. Transport vehicle; 11. Storage bin; 12. Discharge port; 13. Opening / closing plate; 14. Wheel; 15. Axle; 16. Fourth gear; 17. Fifth gear; 18. Sixth gear; 2. Opening / closing mechanism; 21. Opening / closing assembly; 211. First rotating shaft; 2111. Second protrusion; 212. Push wheel; 2121. Groove; 213. Push rod; 214. Reset component; 215. Rack; 216. First gear; 217. First connecting rod; 218. First rotating rod; 219. Second connecting rod; 2191. Second rotating rod; 2192. Third connecting rod ; 2193, Third rotating rod; 22, Power assembly; 221, Driving component; 3, First slide groove; 4, Second slide groove; 5, Second gear; 6, Third gear; 7, Third slide groove; 8, Power switching mechanism; 81, Linkage assembly; 811, Second rotating shaft; 8111, First protruding strip; 812, First fixed plate; 813, First driving bevel gear; 814, First driven bevel gear; 815, Connecting shaft; 816, Second fixed plate; 817, Second driving bevel gear; 818, Second driven bevel gear; 82, Switching assembly; 821, Collar; 822, Telescopic component. Detailed Implementation

[0064] The following is in conjunction with the appendix Figure 1-5 This application will be described in further detail below.

[0065] This application discloses a backfilling device for abutments based on modified phosphogypsum.

[0066] Reference Figure 1 A modified phosphogypsum-based backfilling device includes a transport vehicle 1 and multiple storage bins 11 mounted on the transport vehicle 1. In this embodiment, three storage bins 11 are provided. In other embodiments, the number of storage bins 11 can be determined according to the specific number of laying layers. Each storage bin 11 is provided with a discharge port 12. Each discharge port 12 is located at the rear of the transport vehicle 1, and the distance between each discharge port 12 and the rear of the transport vehicle 1 is different. The lower the position of the discharge port 12, the closer it is to the rear of the transport vehicle 1. The projection of each discharge port 12 on the ground extends along the length direction of the transport vehicle 1.

[0067] Each discharge port 12 is equipped with a rotating and opening plate 13 for sealing and opening the discharge port 12. The transport vehicle 1 is equipped with an opening and closing mechanism 2 for driving each opening and closing plate 13 to open and close sequentially. The opening and closing mechanism 2 will open different opening and closing plates 13 sequentially, so that different fillers in different storage bins 11 can fall in sequentially. Since the different fillers fall in a sequential order, they will be laid in sequence at the locations where fillers are needed.

[0068] Reference Figure 1 , Figure 2 and Figure 3 The opening and closing mechanism 2 includes an opening and closing assembly 21 that drives each opening and closing plate 13 to rotate and open in sequence, a power assembly 22 that provides power to the opening and closing assembly 21, and a reset assembly that drives each opening and closing plate 13 to rotate and reset.

[0069] The bottom of the transport vehicle 1 is equipped with wheels 14, axles 15 and a power mechanism that provides power to the axles 15. The transport vehicle 1 is also equipped with a power switching mechanism 8. The power switching mechanism 8 enables the power mechanism and the power component 22 to provide power to the opening and closing component 21 respectively. The power component 22 can provide power to the opening and closing component 21. When the power mechanism provides power to the opening and closing component 21, the transport vehicle 1 only needs to start moving to drive the opening and closing component 21 to open the valve and realize the material dropping process.

[0070] The opening and closing assembly 21 includes a first rotating shaft 211, a push wheel 212, a push rod 213, a reset component 214, a rack 215, a first gear 216, a first connecting rod 217, a first rotating rod 218, a second connecting rod 219, a second rotating rod 2191, a third connecting rod 2192, and a third rotating rod 2193;

[0071] Reference Figure 2 and Figure 3 The first rotating shaft 211 is rotatably mounted on the transport vehicle 1, and the push wheel 212 is coaxially sleeved on the first rotating shaft 211. The wheel surface of the push wheel 212 is provided with a plurality of grooves 2121 spaced apart.

[0072] Reference Figure 2 and Figure 3The push rod 213 is slidably mounted on the transport vehicle 1, and the reset piece 214 is used to drive the end of the push rod 213 close to the push wheel 212 to elastically abut against the wheel surface or groove 2121 of the push wheel 212;

[0073] Reference Figure 3 , Figure 4 and Figure 5 The rack 215 is fixed to the end of the push rod 213 away from the push wheel 212 and is collinear with the push rod 213. The first gear 216 is rotatably mounted on the transport vehicle 1, and the rack 215 and the first gear 216 mesh with each other.

[0074] Reference Figure 2 and Figure 5 One end of the first connecting rod 217 is vertically fixed on the rotating shaft of the first gear 216, and one end of the first rotating rod 218 is vertically fixed on the rotating shaft of the corresponding opening and closing plate 13. A first sliding groove 3 is provided on the first rotating rod 218, and the end of the first connecting rod 217 away from the first gear 216 is slidably inserted into the first sliding groove 3.

[0075] Reference Figure 4 and Figure 5 One end of the second connecting rod 219 is vertically fixed on the rotating shaft of the first rotating rod 218, and one end of the second rotating rod 2191 is rotatably mounted on the transport vehicle 1. A second sliding groove 4 is provided on the second rotating rod 2191, and the end of the second connecting rod 219 away from the first rotating rod 218 is slidably inserted into the second sliding groove 4.

[0076] Reference Figure 4 and Figure 5 The second gear 5 is coaxially fixed on the rotating shaft of the second rotating rod 2191. One end of the third connecting rod 2192 is coaxially fixed on the rotating shaft of the corresponding opening and closing plate 13. The third gear 6, which meshes with the second gear 5, is coaxially fixed on the rotating shaft of the third connecting rod 2192. One end of the third rotating rod 2193 is coaxially fixed on the rotating shaft of the corresponding opening and closing plate 13. A third sliding groove 7 is provided on the third rotating rod 2193. The end of the third connecting rod 2192 away from the third gear 6 is slidably inserted into the third sliding groove 7.

[0077] The reset assembly includes multiple torsion springs respectively sleeved on the rotating shaft of each opening and closing plate 13. Each torsion spring is used to provide torque to each opening and closing plate 13 to block the discharge port 12, so that the opening and closing plate 13 can automatically rotate to the angle to block the discharge port 12.

[0078] The power assembly 22 includes a drive component 221 fixedly installed on the transport vehicle 1. The drive component 221 is a motor. The output shaft of the motor is coaxially fixed with the first rotating shaft 211. At this time, the motor can directly drive the first rotating shaft 211 to rotate.

[0079] When the motor drives the first rotating shaft 211 to rotate, the first rotating shaft 211 drives the push wheel 212 to rotate. The end of the push rod 213 will slide from the groove 2121 to the edge of the wheel surface of the push wheel 212, or slide from the edge of the wheel surface of the push wheel 212 into the groove 2121. With the reset action of the reset member 214, the push rod 213 will make continuous reset movements. In this embodiment, the reset member 214 is a reset spring.

[0080] When the rotational speed of the push wheel 212 is very high, the end of the push rod 213 can be approximated as abutting against the edge of the wheel surface of the push wheel 212. Since the distance from the edge of the wheel surface of the push wheel 212 to the end of the push rod 213 is closer than the distance from the groove 2121 to the end of the push rod 213, the end of the push rod 213 has a displacement moving away from the push wheel 212 during the process of sliding from the groove 2121 to the edge of the wheel surface of the push wheel 212.

[0081] At this time, the rack 215 at the other end of the push rod 213 will drive the first gear 216 to rotate clockwise. The rotation of the first gear 216 will drive the first connecting rod 217 to rotate clockwise. Since the end of the first connecting rod 217 is inserted into the first slide groove 3, the rotating end of the first connecting rod 217 will drive the first rotating rod 218 to rotate counterclockwise. Since the rotation axis of the first rotating rod 218 is coaxial with the lowest opening and closing plate 13, the first rotating rod 218 will drive the first opening and closing plate 13 to open. At this time, the filler in the first storage bin 11 will start to fall first.

[0082] When the first rotating rod 218 rotates counterclockwise, it will drive the second connecting rod 219 to rotate counterclockwise. The second connecting rod 219 will drive the second rotating rod 2191 to rotate clockwise, causing the second gear 5 to rotate clockwise. The second gear 5 will drive the third gear 6 meshing with it to rotate counterclockwise. At this time, the second opening and closing plate 13, which is coaxially fixed with the third gear 6, will open at the second time. At this time, the filler in the second storage bin 11 will start to fall.

[0083] When the third gear 6 rotates counterclockwise, it will drive the third connecting rod 2192 to rotate counterclockwise. The third connecting rod 2192 will drive the third rotating rod 2193 to rotate counterclockwise. Since the rotating shaft of the third rotating rod 2193 is coaxially fixed with the highest opening and closing plate 13, the third opening and closing plate 13 opens, and the filler in the third storage bin 11 begins to fall.

[0084] When it is necessary to save energy for the motor, the drive mode of the first rotating shaft 211 can be switched through the power switching mechanism 8. At this time, when the transport vehicle 1 is moving, the power mechanism can drive the first rotating shaft 211 to rotate, causing the opening and closing plates 13 at the three discharge ports 12 to open sequentially, realizing layered and sequential material discharge. When the transport vehicle 1 stops, the opening and closing plates 13 at the three discharge ports 12 close sequentially, stopping the material discharge.

[0085] Specifically, the power switching mechanism 8 includes a linkage component 81 for drivingly connecting the power mechanism and the first rotating shaft 211, and a switching component 82 for disconnecting the driving connection between the power mechanism and the first rotating shaft 211.

[0086] Reference Figure 3 and Figure 4 The linkage component 81 includes a second rotating shaft 811, a first fixed plate 812, a first driving bevel gear 813, a first driven bevel gear 814, a connecting shaft 815, a second fixed plate 816, a second driving bevel gear 817, and a second driven bevel gear 818.

[0087] A fourth gear 16 is coaxially mounted on the axle 15, and a fifth gear 17 and a sixth gear 18 are rotatably mounted on the transport vehicle 1. The fourth gear 16 and the fifth gear 17 mesh, the fifth gear 17 and the sixth gear 18 mesh, and the sixth gear 18 is coaxially fixed with the second rotating shaft 811.

[0088] Reference Figure 2 and Figure 3 The first fixed plate 812 is slidably sleeved on the second rotating shaft 811. The first driving bevel gear 813 and the first driven bevel gear 814 mesh with each other and are rotatably mounted on the first fixed plate 812 respectively. The first driving bevel gear 813 is coaxial and slidably sleeved on the second rotating shaft 811. The second rotating shaft 811 is fixedly mounted with a first protrusion 8111. The first driving bevel gear 813 is provided with a first slot that is compatible with the first protrusion 8111.

[0089] The connecting shaft 815 is coaxially fixed with the first driven bevel gear 814. The second fixed plate 816 is slidably mounted on the first rotating shaft 211. The second driving bevel gear 817 and the second driven bevel gear 818 mesh with each other and are rotatably mounted on the second fixed plate 816 respectively. The second driving bevel gear 817 and the connecting shaft 815 are coaxially fixed. The second driven bevel gear 818 is slidably sleeved on the first rotating shaft 211. A second protrusion 2111 is fixedly mounted on the first rotating shaft 211. A second slot that is compatible with the second protrusion 2111 is opened on the second driven bevel gear 818.

[0090] Switching component 82 includes a collar 821 and a telescopic component 822, see reference. Figure 3 The collar 821 is slidably sleeved on the coupling 815. The telescopic component 822 is an electric telescopic rod. The electric telescopic rod is installed at the bottom of the transport vehicle 1. The telescopic end of the electric telescopic rod is fixedly connected to the collar 821, and the telescopic direction of the electric telescopic rod is perpendicular to the length direction of the coupling 815.

[0091] When the power mechanism is needed to provide power to the first rotating shaft 211, the electric telescopic rod extends, causing the collar 821 to drive the connecting shaft 815 to move. At this time, the first slot on the first driving bevel gear 813 and the first protrusion 8111 on the second rotating shaft 811 are inserted and adapted to each other, and the second slot on the second driven bevel gear 818 and the second protrusion 2111 on the first rotating shaft 211 are inserted and adapted to each other.

[0092] At this time, the first driving bevel gear 813 and the second rotating shaft 811 are locked together, and the second driven bevel gear 818 and the first rotating shaft 211 are locked together. When the second rotating shaft 811 rotates, it will drive the first driving bevel gear 813 to rotate. The first driving bevel gear 813 drives the first driven bevel gear 814 to rotate. The first driven bevel gear 814 drives the connecting shaft 815 to rotate. The connecting shaft 815 drives the second driving bevel gear 817 to rotate. The second driving bevel gear 817 drives the second driven bevel gear 818 to rotate. The second driven bevel gear 818 drives the first rotating shaft 211 to rotate.

[0093] Therefore, the motor can be replaced with a generator. When the generator does not drive the first rotating shaft 211 to rotate, the output shaft of the generator can rotate freely. Thus, the power mechanism can realize the power generation process of the generator through the rotation of the first rotating shaft 211, and then store the electrical energy generated by the generator. When needed, it can then supply energy to the rotation of the first rotating shaft 211, further reducing energy consumption.

[0094] When the power mechanism is not required to provide power to the first rotating shaft 211, the electric telescopic rod retracts, causing the collar 821 to drive the connecting shaft 815 to move. This causes the first slot on the first driving bevel gear 813 to separate from the first protrusion 8111 on the second rotating shaft 811, and the second slot on the second driven bevel gear 818 to separate from the second protrusion 2111 on the first rotating shaft 211. At this time, the motor can drive the first rotating shaft 211 to rotate.

[0095] The implementation principle of the modified phosphogypsum-based backfill device in this application embodiment is as follows: different storage bins 11 store different fillers. When the transport vehicle 1 moves along the position where filler is needed, the opening and closing mechanism 2 will open the different opening and closing plates 13 one after another, so that the different fillers in the different storage bins 11 can be dropped one after another. Since the different fillers are dropped in a certain order, they will be laid in the position where filler is needed one after another. This method can lay multiple layers of filler at the same time. Compared with the layered filler method, it greatly shortens the construction cycle of filler and greatly improves the construction efficiency.

[0096] This application also discloses a backfilling method for abutments based on modified phosphogypsum.

[0097] A backfilling method for abutments based on modified phosphogypsum includes the following steps:

[0098] S1: Different fillers are placed in different storage bins 11 inside the transport vehicle 1, namely, lightweight concrete filler with a phosphogypsum content greater than that of cement and sand, phosphogypsum-ceramsite co-filler with the same phosphogypsum and ceramsite content, and phosphogypsum-sand aggregate filler with a cement and sand content greater than that of phosphogypsum. The lightweight concrete filler is connected to the discharge port 12 closest to the rear of the transport vehicle 1, and the phosphogypsum-sand aggregate filler is connected to the discharge port 12 furthest from the rear of the transport vehicle 1.

[0099] S2: Drive the transport vehicle 1 so that it moves at a constant speed along the position where filling is required;

[0100] S3: Compact the area behind the filler.

[0101] For areas below 1.5m, lightweight concrete is used for backfilling, with a strength requirement of 0.3-0.5MPa. Since the strength requirement is relatively low here, lightweight concrete with a high proportion of phosphogypsum is used for backfilling to reduce material consumption and save costs. Moreover, phosphogypsum is a waste product after phosphate fertilizer production. Utilizing phosphogypsum in building materials reduces the mining and waste of resources such as sand and stone, saving resources and being environmentally friendly.

[0102] At a height of 0.8-1.5m, this section mainly supports the back of the platform above 0.8m, with a strength requirement of 0.5-0.8MPa. In this case, phosphogypsum-ceramsite synergistic filler is used for laying.

[0103] For depths above 0.8m, in order to improve the strength of the paving, phosphogypsum-sand aggregate filler is directly used, which makes the filler on the surface more effective at clearing blockages and less susceptible to damage.

[0104] All three layers utilize the self-compacting properties of phosphogypsum, reducing the problem of areas where compaction is impossible.

[0105] Unless otherwise defined, the technical or scientific terms used in this application shall have the ordinary meaning understood by one of ordinary skill in the art to which this application pertains. The terms "first," "second," "third," and similar terms used in this application specification and claims do not indicate any order, quantity, or importance, but are merely used to distinguish different components. The terms "an" or "a" and similar terms do not indicate a quantity limitation, but rather indicate the presence of at least one. The terms "comprising" or "including" and similar terms mean that the elements or objects preceding "comprising" or "including" encompass the elements or objects listed following "comprising" or "including" and their equivalents, and do not exclude other elements or objects. "Above," "below," "left," "right," etc., are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0106] The above are all optional embodiments of this application and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A backfilling device for abutments based on modified phosphogypsum, characterized in that: The vehicle includes a transport vehicle (1) and multiple storage bins (11) installed on the transport vehicle (1) for holding fillers mixed with phosphogypsum. Each storage bin (11) has a discharge port (12). The projections of the multiple discharge ports (12) on the ground are arranged sequentially along the length of the transport vehicle (1). Each discharge port (12) is provided with a rotating and opening plate (13). The transport vehicle (1) is provided with an opening and closing mechanism (2) for driving the opening and closing of the opening and closing plate (13). The opening and closing mechanism (2) includes an opening and closing assembly (21) that drives each of the opening and closing plates (13) to rotate and open in sequence, a power assembly (22) for providing power to the opening and closing assembly (21), and a reset assembly for driving each of the opening and closing plates (13) to rotate and reset. The storage bins (11) are provided in three parts, and the opening and closing plates (13) are provided in three parts corresponding to the storage bins (11). The opening and closing assembly (21) includes a first rotating shaft (211), a push wheel (212), a push rod (213), a reset piece (214), a rack (215), a first gear (216), a first connecting rod (217), a first rotating rod (218), a second connecting rod (219), a second rotating rod (2191), a third connecting rod (2192), and a third rotating rod (2193). The first rotating shaft (211) is rotatably mounted on the transport vehicle (1), and the push wheel (212) is coaxially sleeved on the first rotating shaft (211). The surface of the push wheel (212) is provided with a plurality of grooves (2121) spaced apart. The push rod (213) is slidably mounted on the transport vehicle (1), and the reset member (214) is used to drive the end of the push rod (213) close to the push wheel (212) to elastically abut against the wheel surface or groove (2121) of the push wheel (212); the rack (215) is fixed to the end of the push rod (213) away from the push wheel (212) and is collinear with the push rod (213); the first gear (216) is rotatably mounted on the transport vehicle (1), and the rack (215) and the first gear (216) mesh with each other; One end of the first connecting rod (217) is vertically fixed on the rotating shaft of the first gear (216), and one end of the first rotating rod (218) is vertically fixed on the rotating shaft corresponding to the opening and closing plate (13). A first sliding groove (3) is provided on the first rotating rod (218), and the end of the first connecting rod (217) away from the first gear (216) is slidably inserted into the first sliding groove (3). One end of the second connecting rod (219) is vertically fixed on the rotating shaft of the first rotating rod (218), and one end of the second rotating rod (2191) is rotatably mounted on the transport vehicle (1). A second sliding groove (4) is provided on the second rotating rod (2191), and the end of the second connecting rod (219) away from the first rotating rod (218) is slidably inserted into the second sliding groove (4). A second gear (5) is coaxially fixed on the rotating shaft of the second rotating rod (2191). One end of the third connecting rod (2192) is coaxially fixed with the rotating shaft of the corresponding opening and closing plate (13). A third gear (6) that meshes with the second gear (5) is coaxially fixed on the rotating shaft of the third connecting rod (2192). One end of the third rotating rod (2193) is coaxially fixed with the rotating shaft of the corresponding opening and closing plate (13). A third sliding groove (7) is provided on the third rotating rod (2193). The end of the third connecting rod (2192) away from the third gear (6) is slidably inserted into the third sliding groove (7).

2. The backfilling device for abutments based on modified phosphogypsum according to claim 1, characterized in that: Each of the discharge ports (12) is located at the rear of the transport vehicle (1), and the distance between each discharge port (12) and the rear of the transport vehicle (1) is different. The lower the position of the discharge port (12), the closer it is to the rear of the transport vehicle (1).

3. The backfilling device for abutments based on modified phosphogypsum according to claim 1, characterized in that: The reset assembly includes a plurality of torsion springs respectively sleeved on the rotating shaft of each of the opening and closing plates (13), each torsion spring being used to provide torque to each of the opening and closing plates (13) to block the discharge port (12).

4. The backfilling device for abutments based on modified phosphogypsum according to claim 1, characterized in that: The power assembly (22) includes a drive unit (221) fixedly installed on the transport vehicle (1), and the output shaft of the drive unit (221) is coaxially fixed with the first rotating shaft (211). The bottom of the transport vehicle (1) is provided with a wheel (14), an axle (15) and a power mechanism that provides power to the axle (15). The transport vehicle (1) is also provided with a power switching mechanism (8), which enables the power mechanism and the drive unit (221) to provide power to the first rotating shaft (211) respectively.

5. A backfilling device for abutments based on modified phosphogypsum according to claim 4, characterized in that: The power switching mechanism (8) includes a linkage assembly (81) for drivingly connecting the power mechanism and the first rotating shaft (211) and a switching assembly (82) for disconnecting the driving connection between the power mechanism and the first rotating shaft (211).

6. A backfilling device for abutments based on modified phosphogypsum according to claim 5, characterized in that: The linkage assembly (81) includes a second rotating shaft (811), a first fixed plate (812), a first driving bevel gear (813), a first driven bevel gear (814), a connecting shaft (815), a second fixed plate (816), a second driving bevel gear (817), and a second driven bevel gear (818); a fourth gear (16) is coaxially sleeved on the axle (15), and a fifth gear (17) and a sixth gear (18) are rotatably mounted on the transport vehicle (1). The fourth gear (16) and the fifth gear (17) mesh, the fifth gear (17) and the sixth gear (18) mesh, and the sixth gear (18) is coaxially fixed with the second rotating shaft (811). The first fixing plate (812) is slidably sleeved on the second rotating shaft (811). The first driving bevel gear (813) and the first driven bevel gear (814) mesh with each other and are rotatably mounted on the first fixing plate (812). The first driving bevel gear (813) is coaxial and slidably sleeved on the second rotating shaft (811). A first protrusion (8111) is fixedly mounted on the second rotating shaft (811). A first slot adapted to be inserted into the first protrusion (8111) is provided on the first driving bevel gear (813). The connecting shaft (815) is coaxially fixed with the first driven bevel gear (814). The second fixed plate (816) is slidably mounted on the first rotating shaft (211). The second driving bevel gear (817) and the second driven bevel gear (818) mesh with each other and are rotatably mounted on the second fixed plate (816). The second driving bevel gear (817) and the connecting shaft (815) are coaxially fixed. The second driven bevel gear (818) is slidably sleeved on the first rotating shaft (211). A second protrusion (2111) is fixedly mounted on the first rotating shaft (211). A second slot is provided on the second driven bevel gear (818) to be adapted to the insertion of the second protrusion (2111). The switching component (82) can drive the first slot and the second slot to be inserted into the corresponding first protrusion (8111) and second protrusion (2111).

7. A backfilling device for abutments based on modified phosphogypsum according to claim 6, characterized in that: The switching component (82) includes a collar (821) and a telescopic component (822). The collar (821) is slidably sleeved on the connecting shaft (815). The telescopic component (822) is installed at the bottom of the transport vehicle (1). The telescopic end of the telescopic component (822) is fixedly connected to the collar (821), and the telescopic direction of the telescopic component (822) is perpendicular to the length direction of the connecting shaft (815).

8. A method for backfilling abutments based on modified phosphogypsum, employing a backfilling device based on modified phosphogypsum as described in any one of claims 1-7, characterized in that: Includes the following steps: S1: Place different fillers in different storage bins (11) inside the transport vehicle (1), namely, lightweight concrete filler with a phosphogypsum content greater than that of cement sand and gravel, phosphogypsum-ceramsite co-filler with the same phosphogypsum and ceramsite content, and phosphogypsum-sand aggregate filler with a cement sand and gravel content greater than that of phosphogypsum. Connect the lightweight concrete filler to the discharge port (12) closest to the tail of the transport vehicle (1), and connect the phosphogypsum-sand aggregate filler to the discharge port (12) furthest from the tail of the transport vehicle (1); S2: Drive the transport vehicle (1) to move the transport vehicle (1) at a constant speed along the position where filler is needed; S3: Compact the position after filler.

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