Intelligent hierarchical backfill compaction device for building deep foundation pit

Abstract

The invention relates to the technical field of deep foundation pit backfilling equipment, and discloses an intelligent hierarchical backfilling compaction device for a building deep foundation pit, which comprises a tamping plate, the tamping plate is pushed back and forth on the surface of backfilling soil at a stable speed, and the horizontal pushing action of the tamping plate is used for completing the bulldozing and depression filling operation; and the surface of the backfill soil layer reaches a uniform and flat standard. And through accurate control of the microprocessor, the tamping plate can always keep the consistent bulldozing height, so that the problem that the bulldozing heights are inconsistent in the manual leveling process can be avoided. And secondly, in the compaction stage, a compaction-moving-compaction cycle operation mode is adopted, and accurate and efficient compaction operation is achieved through intelligent control of a microprocessor. The automatic operation mode effectively solves the problems of path deviation and non-uniform force existing in manual operation, not only avoids occurrence of a pressure leakage area, but also ensures uniformity of the overall compaction degree, so that the compaction quality of a backfill soil layer completely reaches the design standard.

Description

Technical Field

[0001] The present invention relates to the technical field of deep foundation pit backfilling equipment, and in particular to an intelligent hierarchical backfilling and compacting device for building deep foundation pits. Background Art

[0002] The construction process for backfill and compaction in a deep foundation pit is as follows: First, the backfill sand and soil that meets the requirements are transported to a designated storage area around the foundation pit. Then, construction workers use tools such as shovels to shovel the sand and soil into the foundation pit according to the specified thickness of each layer. They manually spread and level the sand and soil in the foundation pit to ensure a uniform thickness. After spreading, a watering device is used to evenly moisten the backfill layer to ensure that its moisture content meets the specified standards. Finally, a handheld compacting device is used to fully compact the backfill layer to ensure that the compaction quality meets the requirements. After each single layer of backfill construction is completed, the backfill work of the next layer can be carried out, and the construction steps of shoveling sand and soil, sprinkling water to moisten it, and compacting and compacting are repeated in sequence until the designed backfill elevation is reached.

[0003] However, during the paving and leveling process, construction workers typically use a leveling tool consisting of a push rod and a push plate. During the leveling process, the operator pushes the push rod to move the push plate against the backfill surface, using the contact surface of the push plate to push the sand and soil flat. Because the operator needs to move the leveling tool multiple times to perform the leveling operation, maintaining a completely consistent leveling height is difficult. This fluctuation in operating height can cause localized unevenness on the backfill surface, ultimately making it difficult to meet overall flatness requirements.

[0004] Secondly, during the watering and wetting process, since the operator needs to manually move the sprinkler hose back and forth to spray, it is difficult for the operator to maintain a completely uniform movement speed. This operation method can easily lead to uneven distribution of water, with some areas being over-wet due to excessive watering, while other areas are under-wet due to insufficient watering. Ultimately, the moisture content of the backfill layer is unevenly distributed, affecting the subsequent compaction effect.

[0005] Furthermore, during manual compaction, because construction workers struggle to precisely control the placement of each tamping stroke, adjacent tamping points can be prone to loose connections, resulting in tamping gaps in some areas. Furthermore, manual operation cannot ensure that each tamping stroke is applied with exactly the same force; excessive or insufficient force can affect the compaction effect, leading to uneven compaction across different areas of the backfill layer. Some areas may be undercompacted, while others may be overcompacted. This uneven compaction can affect the density and overall stability of the entire backfill layer, reducing construction quality.

[0006] In response to the above problems, there is an urgent need for an automated construction equipment with intelligent paving and leveling, quantitative watering and uniform compaction functions. Summary of the Invention

[0007] The present invention aims to provide an intelligent hierarchical backfill compaction device for deep foundation pits in construction, which can avoid the problem of difficulty in maintaining high consistency in leveling during traditional manual paving and leveling operations, and at the same time eliminate the path deviation and uneven force during compaction operations, thereby ensuring that the surface flatness of the backfill soil and the overall compaction quality can strictly meet the requirements of engineering specifications.

[0008] In order to achieve the above object, the present invention adopts the following technical solutions:

[0009] The trolley assembly is a device for distributing water to the user, and the trolley assembly is a device for distributing water to the user, wherein the trolley assembly has a plurality of movable parts, and the movable part has a plurality of movable parts, and the movable part has a plurality of movable parts.

[0010] In the present invention, the mobile vehicle can move along the circumference of the foundation pit, thereby driving the swinging main arm and the water tank installed on the vehicle body to move accordingly. The end of the swinging main arm is connected to a swinging auxiliary arm, and both the swinging main arm and the swinging auxiliary arm can swing. When the swinging main arm swings, it will drive the swinging auxiliary arm to swing accordingly, thereby changing the height and position of the swinging auxiliary arm. When the swinging auxiliary arm swings, it will drive the spraying assembly at its end to swing accordingly. Since a shovel plate is connected to the bottom of the spraying assembly, the top surface of the shovel plate is fixedly connected to the bottom of the spraying assembly by welding, and a compaction assembly is welded to the inner side of the shovel plate, the spraying assembly, the shovel plate and the compaction assembly will swing accordingly, so that they can flexibly adjust the height and position according to needs, thereby improving their flexibility.

[0011] A spray assembly is mounted at the end of the swinging jib, spraying water mist onto the sand within the scraper deck. A water tank is connected to the spray assembly, ensuring continuous water mist application. The scraper deck, located at the base of the spray assembly, is used for scraping and transporting the sand. The scraper deck has an arc-shaped cross-section and a concave surface, creating a space for the sand. A compaction assembly, located beneath the scraper deck, is responsible for leveling and compacting the backfill layer.

[0012] During the foundation pit backfilling process, the operator first activates the reclaiming program stored in the microprocessor. Once the reclaiming program is activated, the microprocessor sends a signal to the main swing arm, which swings downward, driving the secondary swing arm downward, thereby lowering the secondary swing arm. This in turn drives the spraying assembly, scraper blade, and compaction assembly downward, and adjusts the scraper blade's position to align with the sand pile.

[0013] Sand is piled around the foundation pit. When the shovel blade aligns with the top of the pile, the operator activates the loading program stored in the microprocessor. Once the loading program is activated, the microprocessor simultaneously activates the swing arm and the spray mechanism, causing the swing arm to swing upward, driving the shovel blade upward with it. As the shovel blade swings upward, the contact surface of the shovel blade gradually cuts into the sand layer. Due to the upward movement of the shovel blade, the sand naturally slides along the curved surface of the shovel blade into the shovel blade. At this point, the shovel blade is loaded with the appropriate amount of sand, completing the material removal operation. As the shovel blade loads the sand, the spray system simultaneously activates, spraying water mist on the sand to humidify it and increase its moisture content.

[0014] The operator then activates the transfer program stored in the microprocessor. Once the transfer program is activated, the microprocessor sends a signal to the mobile vehicle, which begins moving, moving the scraper loaded with sand and soil toward the foundation pit. During the movement, once the operator confirms that the scraper has reached the top of the foundation pit, the operator stops the transfer program, and the microprocessor sends a signal to the mobile vehicle to stop moving.

[0015] After the mobile vehicle stops moving, the operator activates the unloading program stored in the microprocessor. Upon initiation of the unloading program, the microprocessor sends a signal to the swinging jib, which swings downward, driving the scraper plate with it. As the swinging jib swings, the scraper plate gradually tilts, its curved surface beginning to face the foundation pit below. As the scraper plate continues to tilt, gravity forces the sand and soil loaded within it to slide naturally down its curved surface, landing accurately in the foundation pit. The microprocessor precisely controls the coordinated operation of the mobile vehicle, the swinging main arm, and the swinging jib, enabling precise sand and soil shoveling operations. This not only improves construction accuracy and efficiency, but also significantly reduces the labor costs required for manual operation.

[0016] The operator then activates the reset program stored in the microprocessor. Once the reset program is activated, the microprocessor sends a signal to the swing boom, causing it to swing in the opposite direction, driving the scraper blade to smoothly return to its initial position. This ensures that the compaction assembly beneath the scraper blade is level, preparing for subsequent compaction operations. After the reset is complete, the operator activates the descent program stored in the microprocessor. Once the descent program is activated, the microprocessor sends a signal to the swing boom, causing it to swing downward, driving the swing boom down with it. As the swing boom lowers, the compaction assembly gradually descends into the pit. The operator observes the compaction assembly's position changes and immediately stops the descent program when it confirms it has reached a suitable height for compaction operations.

[0017] Next, the leveling phase begins, and the operator activates the leveling program stored in the microprocessor. Once the leveling program is activated, the microprocessor sends a signal to the compaction assembly, which moves back and forth across the backfill surface at a steady pace, using its thrust to flatten raised sandy areas and fill any low spots. During the leveling process, the operator continuously monitors the flatness of the backfill surface. When the backfill surface in the work area reaches a uniform and flat state, the operator stops the leveling program. Through the precise control of the microprocessor, the compaction assembly maintains a completely consistent leveling height, thus avoiding the inconsistent leveling heights that can occur during manual leveling and ensuring that the backfill flatness meets regulatory requirements.

[0018] The compaction phase then begins, with the operator activating the compaction program stored in the microprocessor. Once activated, the microprocessor sends a signal to the compaction assembly, which then moves up and down, applying a tamping force to the backfill. Simultaneously, after each tamping action, the compaction assembly moves accordingly, forming a "tamp-move-tamp" cycle, ensuring that the compaction action covers the entire surface of the backfill, ultimately forming a solid, flat layer.

[0019] Adopting a continuous operation mode of "tamping-moving-tamping", precise and efficient compaction operations are achieved through the intelligent control of the microprocessor. During the compaction process, the compaction component presses down according to the preset cycle, and each tamping maintains the same force and time interval to ensure that each compaction point is evenly stressed. After completing the compaction of the current compaction point, the microprocessor accurately controls the compaction component to move to the adjacent compaction point position, thereby avoiding the leakage area and achieving the stability of the overall compaction quality by maintaining a constant tamping force and movement speed. The operator observes the compaction effect in real time and stops the compaction program after the compaction requirements are met. Through the precise control of the microprocessor, it is ensured that the compaction component always moves at a uniform speed along the planned path and maintains a constant tamping force.

[0020] This automated operation effectively solves the path deviation and uneven force problems that occur in manual operations, avoiding areas of missed compaction while ensuring uniformity of overall compaction, ensuring that the backfill density meets the design standards. After completing the compaction of a single layer of backfill, the backfill of the next layer can be continued. The above steps of material removal, loading, transfer, unloading, resetting, lowering, leveling, and compaction are repeated until the foundation pit reaches the designed backfill elevation.

[0021] 2) The intelligent hierarchical backfill compaction device for deep foundation pits according to 1), wherein:

[0022] A fixing seat is provided on the vehicle body, and a through groove is provided on the upper surface of the fixing seat for the end of the swinging main arm to be embedded. A main connecting shaft is passed through the end of the swinging main arm, and the axis of the main connecting shaft is perpendicular to the axis of the swinging main arm. Both ends of the main connecting shaft respectively penetrate the two side walls of the through groove and are located in the fixing seat. The end of the main connecting shaft passing through the fixing seat is coaxially connected to the main swing motor, and the main swing motor is fixedly connected to the vehicle body. A telescopic rod extending to the swinging main arm is rotatably connected to the vehicle body, and the top of the telescopic rod is rotatably connected to the swinging main arm.

[0023] 3) The intelligent hierarchical backfill compaction device for deep foundation pits according to 1), wherein:

[0024] A secondary connecting shaft is provided through the end of the swing auxiliary arm, and the axis of the secondary connecting shaft is perpendicular to the axis of the swing auxiliary arm. The other end of the swing main arm is provided with a through hole extending along its radial direction. The end of the secondary connecting shaft is connected to a secondary swing motor through the through hole. The output shaft of the secondary swing motor is coaxially connected to the secondary connecting shaft. The secondary swing motor is fixedly connected to the swing main arm, and the spray assembly is fixedly connected to the other end of the swing auxiliary arm. The main swing motor and the secondary swing motor are electrically connected to the microprocessor respectively.

[0025] In the above technical solution, the fixed base supports the swing arm, securely supporting its ends and ensuring overall structural stability during its swing. The ends of the swing arm fit within a through-slot in the fixed base, with the main connecting shaft extending through the walls of the slot, allowing the arm to swing smoothly around the main connecting shaft. This design ensures a stable and controllable trajectory for the swing arm. The limiting action of the through-slot prevents the arm from shifting or shaking during its swing, thereby ensuring reliability and accuracy.

[0026] The main swing motor is secured to the vehicle body with bolts and nuts, and its output shaft is coaxially connected to the main connecting shaft. When the main swing motor is activated, the output shaft transmits power directly to the main connecting shaft, causing it to swing synchronously. Because the main connecting shaft extends through the end of the swing arm and is fixedly connected to it, its rotation drives the entire swing arm.

[0027] The telescopic rod is hinged at its top to the swing arm, and at its bottom to the vehicle body, forming a dynamic, adjustable-length support structure. This design allows the rod to automatically adjust its length based on the swing arm's position, providing stable support without restricting its range of motion. When the swing arm swings through wide angles, the rod's telescopic function and pivoting connection point work together to maintain optimal support for the arm. This adjustable support structure significantly enhances the overall structural adaptability, ensuring stable auxiliary support for the swing arm when carrying heavy loads or performing extensive movements, effectively reducing vibration and deformation during movement.

[0028] The end of the main swing arm is connected to the main swing motor via a main connecting shaft, allowing the main swing arm to swing around the main connecting shaft. The other end of the main swing arm is provided with a through hole extending radially along the main swing arm. A secondary connecting shaft is provided through the end of the secondary swing arm, which is fixedly connected to the secondary swing arm. The secondary connecting shaft passes through the secondary swing arm and extends into the through hole of the main swing arm. The secondary connecting shaft can rotate within the main swing arm, allowing the secondary swing arm to swing freely relative to the main swing arm. One end of the secondary connecting shaft extending through the through hole is coaxially connected to the output shaft of the secondary swing motor, which is fixed to the main swing arm via bolts and nuts. When the secondary swing motor is activated, its output shaft directly drives the secondary connecting shaft to swing, thereby driving the secondary swing arm to swing.

[0029] The spray assembly is fixedly connected to the end of the swinging auxiliary arm by welding. Through the coordinated drive of the main swing motor and the auxiliary swing motor, the main swing motor drives the swinging movement of the swinging main arm, and the auxiliary swing motor drives the swinging movement of the swinging auxiliary arm, so that the spray assembly can achieve multi-angle spraying.

[0030] In addition, the main swing motor and the auxiliary swing motor are electrically connected to the microprocessor respectively. Through the intelligent control of the microprocessor, the speed, direction and swing angle of the main swing motor and the auxiliary swing motor can be accurately coordinated, so that the spraying component can be accurately positioned according to the preset trajectory. This setting method not only significantly expands the coverage of the spraying operation, but also can achieve precise spraying on complex paths, effectively improving the efficiency and quality of construction operations.

[0031] 4) The intelligent hierarchical backfill compaction device for deep foundation pits according to 3), wherein:

[0032] The spray assembly includes a spray box that is long and horizontally arranged, the top of the spray box is fixedly connected to the end of the swing auxiliary arm, and the side of the spray box away from the vehicle body is evenly distributed along its length. A valve is provided in the water nozzle, and the water nozzle is provided with an atomizing nozzle extending outward. The end of the water nozzle away from the atomizing nozzle is connected to a secondary water spray pipe, and the secondary water spray pipe is located in the spray box. All secondary water spray pipes are commonly connected to a main water spray pipe extending upward. The end of the main water spray pipe passes through the spray box and is connected to the water storage tank. A suction pump is provided on the main water spray pipe, and the suction pump is located on the vehicle body. The bottom surface of the spray box is fixedly connected to the top surface of the shovel plate, and the valve and suction pump are electrically connected to the microprocessor respectively.

[0033] In the present invention, the spray box is elongated and horizontally arranged. The top of the spray box is welded to the swing arm, and the bottom of the spray box is welded to the top surface of the scraper plate. Several water outlets are evenly distributed along the side of the spray box away from the vehicle body. Each outlet is equipped with an atomizing nozzle. The atomizing nozzle model is LNN fine atomizing nozzle. This arrangement allows water mist to be sprayed from multiple outlets simultaneously, expanding the spray range and improving the uniformity of the water mist spray, which can avoid the uneven spraying problem caused by manual operation. The water outlet is equipped with an atomizing nozzle, which atomizes the water flow into fine droplets before spraying, so that the sprayed liquid is more evenly distributed in the sand.

[0034] All secondary spray pipes are connected to the main spray pipe, which delivers water from the water storage tank to each secondary spray pipe, ensuring a continuous water supply to meet spraying needs. The secondary spray pipes distribute the water from the main spray pipe to the various spray outlets, ensuring a stable water flow at each outlet. A suction pump powers the water flow, pumping water from the water storage tank and delivering it to the main spray pipe.

[0035] Both the main swing arm and the auxiliary swing arm are hollowed out to provide a mounting channel for the main water pipe. After exiting the top of the water tank, the main water pipe first enters the auxiliary swing arm, extends axially along the auxiliary swing arm, and then passes through the side wall of the auxiliary swing arm. It then passes through the side wall of the main swing arm, enters the main swing arm, extends axially along the main swing arm, and then exits through the side wall of the main swing arm, ultimately connecting to the water tank.

[0036] The microprocessor is electrically connected to the valve inside the water spray nozzle, enabling precise control of the valve. The microprocessor can precisely control the opening and closing of the valve based on actual needs, thereby controlling the timing of water mist spraying, thereby improving the accuracy of the spraying operation and the efficiency of water resource utilization.

[0037] As the scraper blade advances, the contacting end of the blade digs into the sand layer and collects it within the blade. The blade is now loaded with the appropriate amount of sand, completing the material removal process. While the blade is loading, the microprocessor simultaneously activates a suction pump and valves. The suction pump draws water from the water tank, delivers it through the main spray pipe to the secondary spray pipes, and finally sprays it through the atomizing nozzles. Because the scraper blade is located at the bottom of the spray tank, the water mist from the atomizing nozzles precisely lands on the sand within the blade, humidifying the sand and increasing its moisture content.

[0038] 5) The intelligent hierarchical backfill compaction device for deep foundation pits according to 1), wherein:

[0039] The compaction assembly includes a compaction motor, and a first side plate and a second side plate are respectively provided on both sides of the shovel plate, and the plate surfaces of the first side plate and the second side plate are respectively perpendicular to the plate surface of the shovel plate, and the vertical compaction motor is located on the outer side surface of the first side plate, and the output shaft of the compaction motor is coaxially connected to a screw rod, and the screw rod passes through the first side plate and the second side plate in turn and is rotatably connected thereto, a nut sleeve is provided on the screw rod, and a telescopic pump is connected to the side of the nut sleeve, and the telescopic pump has a telescopic rod that telescopes downward, and the central axis of the telescopic rod is perpendicular to the central axis of the screw rod, and the free end of the telescopic rod is connected to a compaction plate for compacting the backfill layer, and the compaction motor and the telescopic pump are respectively electrically connected to a microprocessor.

[0040] In the present invention, when the operator starts the leveling process, the microprocessor sends a signal to the compaction motor, which begins to operate. The compaction motor rotates, driving the lead screw. As the lead screw rotates, the nut sleeve mounted on the lead screw moves smoothly along the lead screw's axis, driving the telescopic pump and the compaction plate to move accordingly.

[0041] As the tamping plate moves, its tip remains in constant contact with the sand on the surface of the sand layer. When encountering a raised area, the tamping plate applies forward force to flatten the excess sand. When encountering a sunken area, the moving tamping plate naturally draws in surrounding sand to fill the depression. During the leveling process, the operator continuously monitors the smoothness of the backfill surface and stops when the backfill surface in the area being worked on is uniform and flat.

[0042] The compaction phase then begins. When the operator initiates the compaction program, the microprocessor sends a signal to the telescopic pump, causing the pump's telescopic rod to extend downward, driving the tamping plate downward to apply force to the backfill. Simultaneously, after each tamping stroke, the microprocessor sends a signal to the compaction motor, causing the motor's output shaft to rotate, driving the screw, which in turn moves the nut sleeve along the screw's axis, moving the tamping plate to the adjacent position. The microprocessor then activates the telescopic pump's telescopic rod to extend downward, driving the tamping plate downward to apply force to the backfill.

[0043] The machine utilizes a continuous "tamp-move-tamp" operation mode, intelligently controlled by a microprocessor for precise and efficient compaction. During compaction, the tamping plate presses down according to a preset cycle, maintaining the same force and time interval between each strike to ensure uniform force at each compaction point. After completing compaction at the current point, the microprocessor precisely controls the tamping plate's movement to the adjacent position, avoiding areas of missed compaction. By maintaining constant tamping force and movement speed, overall compaction quality remains stable.

[0044] 6) The intelligent hierarchical backfill compaction device for deep foundation pits according to 1), wherein:

[0045] A driving roller assembly and a driven roller assembly are respectively provided at both ends of the bottom surface of the vehicle body. The driving roller assembly is connected to the driving structure, and the driving structure is electrically connected to the microprocessor.

[0046] 7) The intelligent hierarchical backfill compaction device for deep foundation pits according to 6), wherein:

[0047] The active roller assembly includes main fixing plates located on both sides of the bottom surface of the vehicle body, and a main axle is passed through all the main fixing plates. Main rollers are respectively sleeved on both ends of the main axle. The main rollers are located on the outside of the main fixing plates, and the main axle is connected to the driving structure.

[0048] 8) The intelligent hierarchical backfill compaction device for deep foundation pits according to 6), wherein:

[0049] The driven roller assembly includes secondary fixing plates respectively located on both sides of the vehicle body, a secondary axle is passed through the secondary fixing plates, and secondary rollers are respectively provided at both ends of the secondary axle, and the secondary rollers are located on the outside of the secondary fixing plates.

[0050] In the above technical solution, the primary fixing plate is used to secure the main axle, and the secondary fixing plate is used to secure the secondary axle. The main axle passes through the two primary fixing plates and is connected to the drive mechanism. When the drive mechanism is activated, the main axle rotates, which transmits the driving force to the primary rollers at both ends, causing them to roll. The rolling of the primary rollers propels the mobile vehicle, which in turn drives the rotation of the secondary rollers, thereby achieving smooth movement of the entire mobile vehicle.

[0051] 9) The intelligent hierarchical backfill compaction device for a deep foundation pit according to any one of 6) or 7), wherein:

[0052] The driving structure includes a driving motor, which is located on the bottom surface of the vehicle body. The output shaft of the driving motor is parallel to the main axle. The output shaft of the driving motor is coaxially sleeved with a main gear, and the main axle is coaxially sleeved with a secondary gear. The main gear is meshed with the secondary gear, and the driving motor is electrically connected to the microprocessor.

[0053] In the present invention, a microprocessor sends a signal to the drive motor. Once the drive motor is activated, its output shaft begins to rotate. This rotation of the drive motor's output shaft drives the primary gear, which is coaxially connected to it. Because the primary gear meshes with the secondary gear, the rotation of the primary gear drives the secondary gear. The rotation of the secondary gear drives the main axle, which in turn drives the primary rollers at both ends of the main axle. The rolling of the primary rollers propels the mobile vehicle, which in turn drives the rotation of the secondary rollers, thereby achieving smooth movement of the entire mobile vehicle.

[0054] The microprocessor is electrically connected to the drive motor, enabling precise control of the drive motor. The microprocessor can precisely turn the drive motor on and off according to actual needs, thereby controlling the moving time and distance of the mobile vehicle, thereby ensuring the continuity and accuracy of the entire construction process.

[0055] Compared with the prior art, the present invention also has the following technical effects:

[0056] In this invention, the tamping plate moves back and forth across the backfill surface at a steady speed, flattening bumps and filling depressions through its horizontal pushing action, ensuring a uniform and level surface. Compared to existing technologies, this invention uses precise microprocessor control to ensure the tamping plate maintains a consistent leveling height, thus avoiding the problem of inconsistent leveling heights that can occur during manual leveling.

[0057] Secondly, during the compaction phase, a "tamp-move-tamp" cycle is employed, achieving precise and efficient compaction through intelligent microprocessor control. This automated operation effectively resolves the path deviation and uneven force problems encountered in manual operation, avoiding areas of pressure loss while ensuring uniformity of overall compaction, ensuring that the backfill soil density meets the design standards. Furthermore, multiple water nozzles are located on the sides of the spray box, allowing water mist to be ejected simultaneously from multiple nozzles, expanding the spray range and improving the uniformity of the water mist spray, thus avoiding the uneven spraying problems encountered in manual operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0058] Figure 1 The figure is a schematic structural diagram of the intelligent hierarchical backfilling and compacting device for deep foundation pits of buildings according to the present invention.

[0059] Figure 2 for Figure 1 Cross-sectional view at AA in the middle.

[0060] Figure 3 The figure is a schematic structural diagram of a fixing seat in an intelligent hierarchical backfilling and compacting device for a deep foundation pit of a building according to the present invention.

[0061] Figure 4 The diagram of the auxiliary swing motor in the intelligent hierarchical backfill compaction device for deep foundation pits of buildings according to the present invention is shown.

[0062] Figure 5 The figure is a schematic structural diagram of the spraying assembly used in the intelligent hierarchical backfill compaction device for deep foundation pits of buildings according to the present invention.

[0063] Figure 6 It is a bottom view of the intelligent hierarchical backfill compaction device for building deep foundation pits according to the present invention. DETAILED DESCRIPTION

[0064] The following is further described in detail through specific implementation methods:

[0065] The figure marks in the drawings of the specification include: vehicle body 1, swing main arm 2, swing auxiliary arm 3, scraping plate 4, water storage tank 5, fixing seat 6, through groove 7, main connecting shaft 8, main swing motor 9, telescopic rod 10, secondary connecting shaft 11, secondary swing motor 12, spray box 13, water spray port 14, valve 15, atomizing nozzle 16, secondary water spray pipe 17, main water spray pipe 18, suction pump 19, compacting motor 20, first side plate 21, second side plate 22, screw rod 23, nut sleeve 24, telescopic pump 25, tamping plate 26, main fixed plate 27, main axle 28, main roller 29, secondary fixed plate 30, secondary axle 31, secondary roller 32, drive motor 33, main gear 34, secondary gear 35.

[0066] For example, see Figure 1As shown, the intelligent hierarchical backfill compaction device for building deep foundation pits in this embodiment includes a mobile vehicle that can move along the circumference of the foundation pit and a microprocessor. The mobile vehicle includes a vehicle body 1, and a swingable swing main arm 2 is provided on the vehicle body 1. The end of the swing main arm 2 is rotatably connected to the vehicle body 1, and the end of the swing main arm 2 away from the vehicle body 1 is rotatably connected to a swingable swing auxiliary arm 3. The swinging direction of the swing auxiliary arm 3 is consistent with the swinging direction of the swing main arm 2. The end of the swing auxiliary arm 3 is connected to a spraying assembly for spraying water mist onto sand and soil. The bottom surface of the spraying assembly is provided with a shovel board 4 for shoveling and transporting backfill soil, and the longitudinal section of the shovel board 4 is arc-shaped.

[0067] Among them, the top surface of the shovel plate 4 is fixedly connected to the bottom of the spraying assembly. The bottom surface of the shovel plate 4 is provided with a compaction assembly with horizontal and vertical movement functions. The compaction assembly is used to level and compact the backfill layer. A water tank 5 is provided on the vehicle body 1. The water tank 5 is connected to the spraying assembly. The mobile vehicle, the swinging main arm 2, the swinging auxiliary arm 3, the spraying assembly and the compaction assembly are electrically connected to the microprocessor respectively.

[0068] In this embodiment, the mobile vehicle can move along the circumference of the foundation pit, thereby driving the swinging main arm 2 and water tank 5 mounted on the vehicle body 1. The end of the swinging main arm 2 is connected to the swinging auxiliary arm 3, and both the swinging main arm 2 and the swinging auxiliary arm 3 are capable of swinging. When the swinging main arm 2 swings, it causes the swinging auxiliary arm 3 to swing with it, thereby changing the height and position of the swinging auxiliary arm 3. When the swinging auxiliary arm 3 swings, it also causes the spray assembly at its end to swing with it.

[0069] Since the bottom of the spraying assembly is connected to a shoveling plate 4, the top surface of the shoveling plate 4 is fixedly connected to the bottom of the spraying assembly by welding, and a compaction assembly is welded on the inner side of the shoveling plate 4, the spraying assembly, the shoveling plate 4 and the compaction assembly will swing accordingly, so that they can flexibly adjust the height and position according to needs, thereby improving their flexibility.

[0070] A spray assembly is mounted at the end of the swinging jib 3, spraying water mist onto the sand within the scraping deck 4. A water tank 5 is connected to the spray assembly, ensuring continuous water mist application. The scraping deck 4, located at the bottom of the spray assembly, is used for scraping and transporting sand. The scraping deck 4 has an arc-shaped cross-section, with a concave surface that creates a space for the sand. A compaction assembly, located beneath the scraping deck 4, is used to level and compact the backfill layer.

[0071] During the foundation pit backfilling process, the operator first activates the material reclaiming program stored in the microprocessor. Once the reclaiming program is activated, the microprocessor sends a signal to the swing arm 2, which swings downward, driving the swing arm 3 downward, thereby lowering the swing arm 3. This in turn drives the spraying assembly, scraper plate 4, and compaction assembly downward, and adjusts the position of the scraper plate 4 to align with the sand pile.

[0072] Sand and soil are piled around the foundation pit. When the position of the shovel board 4 corresponds to the sand and soil at the top of the sand and soil pile, the operator starts the loading program stored in the microprocessor. When the loading program is started, the microprocessor simultaneously starts the swinging auxiliary arm 3 and the spraying structure, causing the swinging auxiliary arm 3 to swing upward, and driving the shovel board 4 to swing upward accordingly. When the shovel board 4 swings upward, the end surface of the shovel board 4 in contact with the sand and soil will gradually cut into the sand and soil layer. Due to the upward movement trend of the shovel board 4, the sand and soil will naturally slide into the interior of the shovel board 4 along the curved plate surface of the shovel board 4. At this time, the shovel board 4 is loaded with an appropriate amount of sand and soil, completing the material removal operation. During the process of the shovel board 4 loading sand and soil, the spraying system starts working synchronously, spraying water mist on the sand and soil, humidifying the sand and soil, and increasing the moisture content of the sand and soil.

[0073] The operator then activates the transfer program stored in the microprocessor. Once the transfer program is activated, the microprocessor sends a signal to the mobile vehicle, which begins moving, driving the scraper 4 loaded with sand toward the foundation pit. During this movement, once the operator confirms that the scraper 4 has reached the top of the foundation pit, the operator stops the transfer program, and the microprocessor sends a signal to the mobile vehicle to stop moving.

[0074] After the mobile vehicle stops moving, the operator activates the unloading program stored in the microprocessor. Upon initiation, the microprocessor sends a signal to the swinging jib 3, causing it to swing downward, driving the scraper plate 4 with it. As the swinging jib 3 swings, the scraper plate 4 gradually tilts, its curved surface beginning to face the foundation pit below.

[0075] As the scraper board 4 continues to tilt, the sand and soil loaded in it slides naturally down the curved surface of the scraper board 4 under the action of gravity and falls accurately into the foundation pit. The microprocessor precisely controls the coordinated operation of the mobile vehicle, the swinging main arm 2, and the swinging auxiliary arm 3, thereby achieving precise sand and soil shoveling operations, which not only improves construction accuracy and efficiency, but also significantly reduces the labor costs required for manual operation.

[0076] The operator then activates the reset program stored in the microprocessor. After the reset program is activated, the microprocessor sends a signal to the swing arm 3, which swings in the opposite direction, driving the scraper plate 4 to smoothly return to its initial position. This ensures that the compaction assembly below the scraper plate 4 is horizontal, preparing for subsequent compaction operations.

[0077] After the reset is complete, the operator activates the descent program stored in the microprocessor. Once the descent program is activated, the microprocessor sends a signal to the swing arm 2, causing it to swing downward, thereby lowering the swing arm 3. As the swing arm 3 descends, the compaction assembly gradually descends into the foundation pit. The operator observes the compaction assembly's position and immediately stops the descent program when it confirms it has reached a suitable height for compaction operations.

[0078] Next, the leveling phase begins. The operator activates the leveling program stored in the microprocessor. Once the program is activated, the microprocessor sends a signal to the compactor assembly, which moves back and forth across the backfill surface at a steady pace, using its thrust to flatten any raised areas and fill any low spots. Throughout the leveling process, the operator continuously monitors the backfill surface for smoothness. The operator stops the leveling process when the backfill surface in the work area is uniform and flat.

[0079] Through the precise control of the microprocessor, the compaction component can always maintain a completely consistent leveling height, thus avoiding the problem of inconsistent leveling height that occurs during manual leveling, and ensuring that the flatness of the backfill soil meets the specification requirements.

[0080] The compaction phase then begins, with the operator activating the compaction program stored in the microprocessor. Once activated, the microprocessor sends a signal to the compaction assembly, which then moves up and down, applying a tamping force to the backfill. Simultaneously, after each tamping action, the compaction assembly moves accordingly, forming a "tamp-move-tamp" cycle, ensuring that the compaction action covers the entire surface of the backfill, ultimately forming a solid, flat layer.

[0081] The machine uses a continuous "tamp-move-tamp" operation mode, with intelligent microprocessor control for precise and efficient compaction. During the compaction process, the compacting assembly presses down according to a preset cycle, maintaining the same force and time interval for each tamping, ensuring uniform force at each compaction point.

[0082] After completing compaction at the current point, the microprocessor precisely controls the compaction assembly to move to the adjacent compaction point, avoiding areas of missed compaction. By maintaining a constant impact force and movement speed, the overall compaction quality is stable. The operator monitors the compaction results in real time and stops the process when the required compaction level is achieved. The microprocessor's precise control ensures that the compaction assembly always moves at a constant speed along the planned path and maintains a constant impact force.

[0083] This automated operation effectively solves the path deviation and uneven force problems that occur in manual operations, avoiding areas of missed compaction while ensuring uniformity of overall compaction, ensuring that the backfill density meets the design standards. After completing the compaction of a single layer of backfill, the backfill of the next layer can be continued. The above steps of material removal, loading, transfer, unloading, resetting, lowering, leveling, and compaction are repeated until the foundation pit reaches the designed backfill elevation.

[0084] See also Figure 3 As shown, a fixing seat 6 is provided on the vehicle body 1, and a through groove 7 is provided on the upper surface of the fixing seat 6 for the end of the swing main arm 2 to be embedded. A main connecting shaft 8 is passed through the end of the swing main arm 2, and the axis of the main connecting shaft 8 is perpendicular to the axis of the swing main arm 2. Both ends of the main connecting shaft 8 respectively penetrate the two side walls of the through groove 7 and are located in the fixing seat 6. The main connecting shaft 8 passes through the end of the fixing seat and is coaxially connected to the main swing motor 9. The main swing motor 9 is fixedly connected to the vehicle body 1, and a telescopic rod 10 extending to the swing main arm 2 is rotatably connected to the vehicle body 1, and the top of the telescopic rod 10 is rotatably connected to the swing main arm 2.

[0085] See also Figure 4 As shown, a secondary connecting shaft 11 is provided through the end of the swing auxiliary arm 3, and the axis of the secondary connecting shaft 11 is perpendicular to the axis of the swing auxiliary arm 3. The other end of the swing main arm 2 is provided with a through hole extending along its radial direction. The end of the secondary connecting shaft 11 is connected to a secondary swing motor 12 through the through hole. The output shaft of the secondary swing motor 12 is coaxially connected to the secondary connecting shaft 11. The secondary swing motor 12 is fixedly connected to the swing main arm 2. The spraying assembly is fixedly connected to the other end of the swing auxiliary arm 3. The main swing motor 9 and the secondary swing motor 12 are electrically connected to the microprocessor respectively.

[0086] In this embodiment, the fixed seat 6 is used to support the swinging main arm 2, firmly supporting the end of the swinging main arm 2 and ensuring the overall structural stability of the swinging main arm 2 during the swinging process. The end of the swinging main arm 2 is embedded in the through slot 7 on the fixed seat 6. The main connecting shaft 8 passes through the groove walls on both sides of the through slot 7, allowing the swinging main arm 2 to swing smoothly around the main connecting shaft 8. This design ensures that the motion trajectory of the swinging main arm 2 is stable and controllable. At the same time, the limiting effect of the through slot 7 prevents the main arm from deflecting or shaking during the swinging process, thereby ensuring the reliability and accuracy of the swinging process.

[0087] The main swing motor 9 is secured to the vehicle body 1 with bolts and nuts, and its output shaft is coaxially connected to the main connecting shaft 8. When the main swing motor 9 is activated, the output shaft transmits power directly to the main connecting shaft 8, causing it to swing synchronously. Because the main connecting shaft 8 extends through the end of the swing main arm 2 and is fixedly connected to it, the rotation of the main connecting shaft 8 causes the entire swing main arm 2 to swing.

[0088] The top of the telescopic rod 10 is hinged to the swing arm 2, and the bottom of the telescopic rod 10 is hinged to the vehicle body 1, forming a dynamic support structure with adjustable length. This design allows the telescopic rod 10 to automatically adjust its length according to the movement position of the swing arm 2, providing stable support without restricting the range of motion of the swing arm 2.

[0089] When the swing arm 2 swings through a wide angle, the telescopic rod 10, through its own telescopic function and the coordinated operation of the rotational connection point, always maintains optimal support for the swing arm 2. This adjustable support structure significantly improves the adaptability of the entire structure, providing stable auxiliary support for the swing arm 2 when carrying heavy objects or performing large-scale movements, effectively reducing vibration and deformation during movement.

[0090] The end of the main swing arm 2 is connected to the main swing motor 9 via the main connecting shaft 8, allowing the main swing arm 2 to swing around the main connecting shaft 8. The other end of the main swing arm 2 is provided with a through hole extending in its radial direction. The end of the auxiliary swing arm 3 is penetrated by a secondary connecting shaft 11, which is fixedly connected to the auxiliary swing arm 3. The secondary connecting shaft 11 passes through the auxiliary swing arm 3 and extends into the through hole of the main swing arm 2. The secondary connecting shaft 11 can rotate within the main swing arm 2, thereby allowing the auxiliary swing arm 3 to swing freely relative to the main swing arm 2.

[0091] One end of the secondary connecting shaft 11 passing through the through hole is coaxially connected to the output shaft of the secondary swing motor 12, and the secondary swing motor 12 is fixed to the swing main arm 2 by bolts and nuts. When the secondary swing motor 12 is started, its output shaft directly drives the secondary connecting shaft 11 to swing, thereby driving the swing auxiliary arm 3 to swing.

[0092] The spray assembly is fixedly connected to the end of the swinging auxiliary arm 3 by welding. Through the coordinated drive of the main swing motor 9 and the auxiliary swing motor 12, the main swing motor 9 drives the swinging movement of the swinging main arm 2, and the auxiliary swing motor 12 drives the swinging movement of the swinging auxiliary arm 3, so that the spray assembly can achieve multi-angle spraying.

[0093] In addition, the main swing motor 9 and the auxiliary swing motor 12 are electrically connected to the microprocessor respectively. Through the intelligent control of the microprocessor, the speed, direction and swing angle of the main swing motor 9 and the auxiliary swing motor 12 can be accurately coordinated, so that the spraying component can be accurately positioned according to the preset trajectory. This setting method not only significantly expands the coverage of the spraying operation, but also can achieve precise spraying of complex paths, effectively improving the efficiency and quality of construction operations.

[0094] See also Figure 5As shown, the spray assembly includes a spray box 13 that is long and horizontally arranged. The top of the spray box 13 is fixedly connected to the end of the swing auxiliary arm 3. The side of the spray box 13 away from the vehicle body 1 is evenly distributed with several water spray outlets 14 along its length. A valve 15 is provided in the water spray outlet 14. The water spray outlet 14 is provided with an atomizing nozzle 16 extending outward. The end of the water spray outlet 14 away from the atomizing nozzle 16 is connected to a secondary water spray pipe 17, which is located in the spray box 13.

[0095] Secondly, all the secondary water spray pipes 17 are connected to the main water spray pipe 18 extending upward. The end of the main water spray pipe 18 passes through the spray box 13 and is connected to the water storage tank 5. A suction pump 19 is provided on the main water spray pipe 18. The suction pump 19 is located on the vehicle body 1. The bottom surface of the spray box 13 is fixedly connected to the top surface of the shovel board 4. The valve 15 and the suction pump 19 are respectively electrically connected to the microprocessor.

[0096] In this embodiment, the spray box 13 is elongated and horizontally arranged. The top of the spray box 13 is welded to the swing arm 3, and the bottom of the spray box 13 is welded to the top surface of the scraper plate 4. Several water spray outlets 14 are evenly distributed along the length of the spray box 13 on the side facing away from the vehicle body 1. Each water spray outlet 14 is equipped with an atomizing nozzle 16. The atomizing nozzle 16 is a LNN fine atomizing nozzle 16.

[0097] This arrangement allows water mist to be sprayed simultaneously from multiple water spray ports 14, thereby increasing the spraying range and improving the uniformity of the water mist spray, thereby avoiding the problem of uneven spraying during manual operation. Atomizing nozzles 16 are provided within the water spray ports 14 to atomize the water flow into fine droplets before spraying them, so that the sprayed liquid can be more evenly distributed in the sand.

[0098] All secondary spray pipes 17 are connected to a main spray pipe 18, which delivers water from the water storage tank 5 to each of the secondary spray pipes 17, ensuring a continuous water supply to meet spraying needs. The secondary spray pipes 17 distribute the water from the main spray pipe 18 to the various spray outlets 14, ensuring a stable water flow at each outlet. A suction pump 19 powers the water flow, pumping water from the water storage tank 5 and delivering it to the main spray pipe 18.

[0099] Both the swing arm 2 and the swing auxiliary arm 3 are hollow, providing a mounting channel for the main water spray pipe 18. After passing upward from the top of the water spray tank, the main water spray pipe 18 first enters the swing auxiliary arm 3, extends axially along the swing auxiliary arm 3, and then passes through the side wall of the swing auxiliary arm 3. It then passes through the side wall of the swing main arm 2, enters the swing main arm 2, extends axially along the swing main arm 2, and then passes through the side wall of the swing main arm 2, finally connecting with the water storage tank 5.

[0100] The microprocessor is electrically connected to the valve 15 in the water spray port 14 and can precisely control the valve 15. The microprocessor can precisely control the opening and closing of the valve 15 according to actual needs, thereby controlling the time of water mist spraying, thereby improving the accuracy of the spraying operation and the efficiency of water resource utilization.

[0101] As the scraper 4 advances, the end of the scraper 4 in contact with the sand and soil scoops into the sand layer, gathering it within the scraper 4. At this point, the scraper 4 is loaded with an appropriate amount of sand and soil, completing the material removal process. While the scraper 4 is loading the sand and soil, the microprocessor simultaneously activates the suction pump 19 and valve 15. The suction pump 19 draws water from the water tank 5, delivers it through the main spray pipe 18 to the secondary spray pipes 17, and ultimately sprays it through the atomizing nozzle 16. Because the scraper 4 is located on the bottom surface of the spray box 13, the water mist sprayed by the atomizing nozzle 16 accurately lands on the sand and soil within the scraper 4, humidifying the sand and soil and increasing its moisture content.

[0102] See also Figure 2 As shown, the compaction assembly includes a compaction motor 20, and a first side plate 21 and a second side plate 22 are respectively provided on both sides of the shovel plate 4. The plate surfaces of the first side plate 21 and the second side plate 22 are respectively perpendicular to the plate surface of the shovel plate 4. The vertical compaction motor 20 is located on the outer side surface of the first side plate 21, and the output shaft of the compaction motor 20 is coaxially connected to the screw rod 23. The screw rod 23 passes through the first side plate 21 and the second side plate 22 in sequence and is rotatably connected to them.

[0103] Secondly, a nut sleeve 24 is sleeved on the screw rod 23, and a telescopic pump 25 is connected to the side of the nut sleeve 24. The telescopic pump 25 has a telescopic rod 10 that can be telescoped downward. The central axis of the telescopic rod 10 is perpendicular to the central axis of the screw rod 23. The free end of the telescopic rod 10 is connected to a compacting plate 26 for compacting the backfill layer. The compaction motor 20 and the telescopic pump 25 are electrically connected to the microprocessor respectively.

[0104] In this embodiment, when the operator initiates the leveling process, the microprocessor sends a signal to the compaction motor 20, causing it to begin operating. The rotation of the compaction motor 20 drives the screw 23 to rotate accordingly. As the screw 23 rotates, the nut sleeve 24, which is mounted on the screw 23, moves smoothly along the axial direction of the screw 23, thereby driving the telescopic pump 25 and the tamping plate 26 to move accordingly.

[0105] As the tamping plate 26 moves, its end remains in constant contact with the sand on the surface of the sand layer. When encountering a raised area, the tamping plate 26 applies a forward thrust to flatten the excess sand. When encountering a sunken area, the moving tamping plate 26 naturally draws in surrounding sand to fill the depression. During the leveling process, the operator continuously monitors the smoothness of the backfill surface and stops leveling when the backfill surface in the work area is uniform and flat.

[0106] The compaction phase then begins. When the operator initiates the compaction process, the microprocessor sends a signal to the telescopic pump 25, causing its telescopic rod 10 to extend downward, driving the tamping plate 26 downward to apply a tamping force to the backfill. Simultaneously, after each tamping stroke, the microprocessor sends a signal to the compaction motor 20, causing its output shaft to rotate, driving the screw 23, which in turn drives the nut sleeve 24 axially along the screw 23, thereby moving the tamping plate 26 to an adjacent position. The microprocessor then activates the telescopic pump 25, causing its telescopic rod 10 to extend downward, driving the tamping plate 26 downward to apply a tamping force to the backfill.

[0107] The system utilizes a continuous "tamp-move-tamp" operation mode, intelligently controlled by a microprocessor to achieve precise and efficient compaction. During the compaction process, the tamping plate 26 presses down according to a preset cycle, maintaining the same force and time interval between each strike to ensure uniform force at each compaction point. After completing compaction at the current point, the microprocessor precisely controls the movement of the tamping plate 26 to the adjacent position, avoiding areas of missed compaction. By maintaining a constant tamping force and movement speed, the overall compaction quality remains stable.

[0108] See also Figure 6 As shown, a driving roller assembly and a driven roller assembly are respectively provided at both ends of the bottom surface of the vehicle body 1. The driving roller assembly is connected to the drive structure, which is electrically connected to the microprocessor. The driving roller assembly includes a main fixing plate 27, located on both sides of the bottom surface of the vehicle body 1. A main axle 28 is passed through all main fixing plates 27. Main rollers 29 are respectively sleeved on both ends of the main axle 28. The main rollers 29 are located outside the main fixing plates 27 and connected to the drive structure. The driven roller assembly includes a secondary fixing plate 30, located on both sides of the vehicle body 1. A secondary axle 31 is passed through the secondary fixing plates 30. Secondary rollers 32 are respectively provided on both ends of the secondary axle 31. Secondary rollers 32 are located outside the secondary fixing plates 30.

[0109] In this embodiment, the main fixing plate 27 is used to secure the main axle 28, and the secondary fixing plate 30 is used to secure the secondary axle 31. The main axle 28 extends through the two main fixing plates 27 and is connected to the drive mechanism. When the drive mechanism is activated, the main axle 28 rotates, which transmits the driving force to the main rollers 29 at both ends of the main axle 28, causing them to roll. The rolling of the main rollers 29 propels the mobile vehicle, which in turn drives the rotation of the secondary rollers 32, thereby achieving smooth movement of the entire mobile vehicle.

[0110] The drive structure includes a drive motor 33, which is located on the bottom surface of the vehicle body 1. The output shaft of the drive motor 33 is parallel to the main axle 28. The output shaft of the drive motor 33 is coaxially sleeved with a main gear 34, and the main axle 28 is coaxially sleeved with a secondary gear 35. The main gear 34 is meshed with the secondary gear 35, and the drive motor 33 is electrically connected to the microprocessor.

[0111] In this embodiment, the microprocessor sends a signal to the drive motor 33. Once the drive motor 33 is activated, its output shaft begins to rotate. The rotation of the output shaft of the drive motor 33 drives the primary gear 34, which is coaxially connected to it. Because the primary gear 34 meshes with the secondary gear 35, the rotation of the primary gear 34 drives the secondary gear 35. The rotation of the secondary gear 35 drives the main axle 28, which in turn drives the primary rollers 29 at each end of the main axle 28. The rolling of the primary rollers 29 propels the vehicle, which in turn drives the secondary rollers 32 to rotate, thereby achieving smooth movement of the vehicle as a whole.

[0112] The microprocessor is electrically connected to the drive motor 33 and can achieve precise control of the drive motor 33. The microprocessor can accurately turn the drive motor 33 on and off according to actual needs, thereby adjusting the moving time and distance of the mobile vehicle, thereby ensuring the continuity and accuracy of the entire construction process.

[0113] In this embodiment, the tamping plate 26 moves back and forth across the backfill surface at a steady speed, flattening protrusions and filling depressions through its horizontal pushing action, ensuring a uniform and level surface. Compared to existing technologies, this embodiment utilizes precise microprocessor control to ensure that the tamping plate 26 maintains a consistent leveling height, thus avoiding the problem of inconsistent leveling heights that can occur during manual leveling.

[0114] Secondly, during the compaction phase, a "tamp-move-tamp" cycle is employed, achieving precise and efficient compaction through intelligent microprocessor control. This automated operation effectively resolves the path deviation and uneven force problems that can occur in manual operations, avoiding areas of pressure loss while ensuring uniformity of overall compaction, thereby ensuring that the backfill's compaction quality fully meets design standards. Furthermore, several water nozzles 14 are evenly distributed along the sides of the spray box 13, allowing water mist to be ejected simultaneously from multiple nozzles 14, expanding the spraying range and improving the uniformity of the water mist spray, thus avoiding the uneven spraying problems that can occur in manual operations.

Claims

1. An intelligent hierarchical backfill compaction device for deep foundation pits, characterized in that: The top surface of the shovel is fixedly connected to the bottom surface of the spraying assembly, and the bottom surface of the shovel is fixedly connected to the bottom surface of the spraying assembly.

2. The intelligent hierarchical backfill compaction device for deep foundation pits of buildings according to claim 1 is characterized in that: A fixing seat is provided on the vehicle body, and a through groove is provided on the upper surface of the fixing seat for the end of the swinging main arm to be embedded. A main connecting shaft is passed through the end of the swinging main arm, and the axis of the main connecting shaft is perpendicular to the axis of the swinging main arm. Both ends of the main connecting shaft respectively penetrate the two side walls of the through groove and are located in the fixing seat. The end of the main connecting shaft passing through the fixing seat is coaxially connected to the main swing motor, and the main swing motor is fixedly connected to the vehicle body. A telescopic rod extending to the swinging main arm is rotatably connected to the vehicle body, and the top of the telescopic rod is rotatably connected to the swinging main arm.

3. The intelligent hierarchical backfill compaction device for deep foundation pits of construction according to claim 1 is characterized in that: A secondary connecting shaft is provided through the end of the swing auxiliary arm, and the axis of the secondary connecting shaft is perpendicular to the axis of the swing auxiliary arm. The other end of the swing main arm is provided with a through hole extending along its radial direction. The end of the secondary connecting shaft is connected to a secondary swing motor through the through hole. The output shaft of the secondary swing motor is coaxially connected to the secondary connecting shaft. The secondary swing motor is fixedly connected to the swing main arm, and the spray assembly is fixedly connected to the other end of the swing auxiliary arm. The main swing motor and the secondary swing motor are electrically connected to the microprocessor respectively.

4. The intelligent hierarchical backfill compaction device for deep foundation pits of construction according to claim 3 is characterized in that: The spray assembly includes a spray box that is long and horizontally arranged, the top of the spray box is fixedly connected to the end of the swing auxiliary arm, and the side of the spray box away from the vehicle body is evenly distributed along its length. A valve is provided in the water nozzle, and the water nozzle is provided with an atomizing nozzle extending outward. The end of the water nozzle away from the atomizing nozzle is connected to a secondary water spray pipe, and the secondary water spray pipe is located in the spray box. All secondary water spray pipes are commonly connected to a main water spray pipe extending upward. The end of the main water spray pipe passes through the spray box and is connected to the water storage tank. A suction pump is provided on the main water spray pipe, and the suction pump is located on the vehicle body. The bottom surface of the spray box is fixedly connected to the top surface of the shovel plate, and the valve and suction pump are electrically connected to the microprocessor respectively.

5. The intelligent hierarchical backfill compaction device for deep foundation pits of construction according to claim 1 is characterized in that: The compaction assembly includes a compaction motor, and a first side plate and a second side plate are respectively provided on both sides of the shovel plate, and the plate surfaces of the first side plate and the second side plate are respectively perpendicular to the plate surface of the shovel plate, and the vertical compaction motor is located on the outer side surface of the first side plate, and the output shaft of the compaction motor is coaxially connected to a screw rod, and the screw rod passes through the first side plate and the second side plate in turn and is rotatably connected thereto, a nut sleeve is provided on the screw rod, and a telescopic pump is connected to the side of the nut sleeve, and the telescopic pump has a telescopic rod that telescopes downward, and the central axis of the telescopic rod is perpendicular to the central axis of the screw rod, and the free end of the telescopic rod is connected to a compaction plate for compacting the backfill layer, and the compaction motor and the telescopic pump are respectively electrically connected to a microprocessor.

6. The intelligent hierarchical backfill compaction device for deep foundation pits of construction according to claim 1 is characterized in that: A driving roller assembly and a driven roller assembly are respectively provided at both ends of the bottom surface of the vehicle body. The driving roller assembly is connected to the driving structure, and the driving structure is electrically connected to the microprocessor.

7. The intelligent hierarchical backfill compaction device for deep foundation pits of construction according to claim 6, characterized in that: The active roller assembly includes main fixing plates located on both sides of the bottom surface of the vehicle body, and a main axle is passed through all the main fixing plates. Main rollers are respectively sleeved on both ends of the main axle. The main rollers are located on the outside of the main fixing plates, and the main axle is connected to the driving structure.

8. The intelligent hierarchical backfill compaction device for deep foundation pits of construction according to claim 6 is characterized in that: The driven roller assembly includes secondary fixing plates respectively located on both sides of the vehicle body, a secondary axle is passed through the secondary fixing plates, and secondary rollers are respectively provided at both ends of the secondary axle, and the secondary rollers are located on the outside of the secondary fixing plates.

9. The intelligent hierarchical backfill compaction device for a deep foundation pit according to any one of claims 6 or 7, characterized in that: The driving structure includes a driving motor, which is located on the bottom surface of the vehicle body. The output shaft of the driving motor is parallel to the main axle. The output shaft of the driving motor is coaxially sleeved with a main gear, and the main axle is coaxially sleeved with a secondary gear. The main gear is meshed with the secondary gear, and the driving motor is electrically connected to the microprocessor.

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