A device for backfilling and compacting a house foundation

Abstract

The utility model belongs to the house core backfill compaction technical field, specifically disclose a kind of house core backfill compaction device, including equipment main body, the outside wall of equipment main body is fixedly connected with support, the compaction wheel is rotatably connected on the support, the outside wall of support is fixedly connected with mounting bracket, two groups of sliding slots are set in the upper and lower sides of mounting bracket, the inner portion of two groups of sliding slots is slidably connected with upper support plate and lower support plate respectively, switching is carried out to soft brush and hard brush by electric telescopic link, can automatically switch cleaning tool according to the type of compaction wheel surface adhesion soil, for sandy soil, use flexible soft brush to avoid excessive scratch, for high water content silty clay, use high-strength hard brush to enhance friction, ensure that compaction wheel surface is always clean, not only avoid compaction wheel on adhesion soil secondary pollution working surface with compaction process, more reduce the compaction density deviation caused by wheel surface unclean, significantly improve the compaction uniformity of house core backfill soil.

Description

Technical Field

[0001] This utility model belongs to the field of backfill compaction technology for atrial cores, and specifically relates to a backfill compaction device for atrial cores. Background Technology

[0002] Backfilling of the building core refers to the process of filling and compacting the vertical space formed between the top of the foundation and the designed floor level within the enclosed interior area of ​​a building after the completion of the main structure, including the foundation and roof slab. This is done using carefully selected backfill materials, layer by layer according to the design thickness, and then fully compacted using professional compaction equipment such as road rollers or other processes. The aim is to eliminate voids in the space, enhance the bearing capacity of the foundation, and prevent subsequent settlement or cracking of the ground structure due to instability of the base layer.

[0003] Referring to the prior art document CN221645484U, this utility model provides a road construction rolling device. This utility model relates to the field of road construction equipment. The road construction rolling device includes a rolling device body and two auxiliary rollers. The rolling device body has fixing components at both ends for limiting the two auxiliary rollers. The two auxiliary rollers are connected to the two fixing components through multiple limiting devices. Through precise control of the drive components, a movable plate can be rotated. When the movable plate rotates, multiple clamping components slide within multiple grooves opened on the surfaces of the movable plate and the limiting plate. As the clamping components slide, multiple inclined columns leave the interior of the auxiliary rollers, thus causing the auxiliary rollers to lose their limiting position. This structure facilitates the disassembly and maintenance of the auxiliary rollers, reducing the operator's workload to a certain extent and improving the efficiency of the rolling device.

[0004] During the backfilling process, road rollers are key equipment for achieving compaction of backfill materials. While the road rollers in the comparative document facilitate the disassembly and maintenance of auxiliary rollers, their compaction wheels, used to compact road surfaces, are prone to soil adhesion when compacting materials such as plain soil, lime-soil, and graded sand and gravel. This can easily lead to uneven mud layers forming on the compaction wheel surface due to factors such as fluctuations in material moisture content or changes in ambient humidity. Existing road rollers generally lack dedicated cleaning mechanisms for compaction wheels, and mud removal is still mainly done manually. Cleaning work often has to wait until the interval between single operations or during a single day of construction. After the process is completed, the workers will collect and clean the soil adhering to the surface of the compaction wheel. However, this centralized cleaning method has the problem of not cleaning in time. As a result, during the construction period of a single day, soil will continue to adhere to the surface of the compaction wheel when it is compacting the soil. The soil adhering to the surface of the compaction wheel will change its contact pattern with the backfill material, resulting in a reduction in the effective compaction area and thus causing insufficient compaction of the backfill material in some areas. In addition, if the adhering mud clumps fall off during the compaction process, they will form local hard spots in the already compacted base layer, which will damage the overall uniformity of the base layer and affect the quality of subsequent ground subbase construction. Utility Model Content

[0005] The purpose of this invention is to provide a backfill compaction device for atrial cores to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A backfill compaction device for atrial fissures includes a main body, a bracket fixedly connected to the outer wall of the main body, a compaction wheel rotatably connected to the bracket, and a mounting frame fixedly connected to the outer wall of the bracket. Two sets of sliding grooves are provided on the upper and lower sides of the mounting frame, with an upper support plate and a lower support plate slidably connected inside the two sets of sliding grooves respectively. Lower racks are fixedly connected to both sides of the lower support plate, and upper racks are fixedly connected to both sides of the upper support plate. Transmission gears are rotatably connected to both sides of the mounting frame, and the transmission gears mesh with the upper and lower racks respectively.

[0008] Preferably, a soft brush is fixedly connected to the outer wall of the upper support plate, and a hard brush is fixedly connected to the outer wall of the lower support plate.

[0009] Preferably, both sides of the mounting bracket are fixedly connected to protrusions, and electric telescopic rods are fixedly connected to the protrusions.

[0010] Preferably, both sides of the upper support plate are fixedly connected to connectors, and the end of the electric telescopic rod away from the protrusion is fixedly connected to the outer wall of the connector.

[0011] Preferably, hydraulic telescopic rods are fixedly connected to both sides of the mounting frame on the left, and a horizontal plate is fixedly connected to the ends of the hydraulic telescopic rods on both sides. The horizontal plate is provided with multiple stone-discharging teeth.

[0012] Preferably, a driver's seat is installed on the main body of the equipment, and a drive wheel is installed at the rear of the main body of the equipment.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. The electric telescopic rod drives the switching between soft and hard brushes, automatically switching the cleaning tool according to the type of soil adhering to the compaction wheel surface. For sandy soil, a soft brush is used to avoid excessive scraping, while a high-strength hard brush is used to enhance friction for silty clay with high water content, ensuring that the compaction wheel surface is always clean. This not only prevents the soil adhering to the compaction wheel from secondary contaminating the work surface during the compaction process, but also reduces the compaction density deviation caused by unclean wheel surface, significantly improving the compaction uniformity of the backfill soil in the building core.

[0015] 2. The combination structure of the stone-discharging teeth and the cross plate can pre-treat the soil before the compaction wheel is in operation. The gaps between the stone-discharging teeth can screen and block stones larger than the gaps, preventing stones from being pressed into the soil layer by the compaction wheel and forming local hard spots or voids. At the same time, loose soil can slide through the gaps between the stone-discharging teeth without affecting the operation. This solves the problem of uneven compaction layer density and easy settlement in the later stage caused by stones mixed in the backfill soil of the house core. Attached Figure Description

[0016] Figure 1 This is a structural diagram of the present utility model;

[0017] Figure 2 The mounting bracket structure in this utility model Figure 1 ;

[0018] Figure 3 The mounting bracket structure in this utility model Figure 2 ;

[0019] Figure 4 This is a partial structure of the present utility model. Figure 1 ;

[0020] Figure 5 This is a planar structural diagram of the present invention;

[0021] Figure 6 This is a partial structure of the present utility model. Figure 2 .

[0022] In the diagram: 1. Main body of the equipment; 2. Support frame; 3. Compactor wheel; 4. Upper rack; 5. Hard brush; 6. Driver's seat; 7. Drive wheel; 8. Mounting frame; 9. Protrusion; 10. Electric telescopic rod; 11. Connector; 12. Upper support plate; 13. Soft brush; 14. Hydraulic telescopic rod; 15. Horizontal plate; 16. Stone discharge teeth; 17. Slide groove; 18. Transmission gear; 19. Lower rack; 20. Lower support plate. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Reference Figure 1-6 A backfill compaction device for a cavity includes a main body 1. A bracket 2 is fixedly connected to the outer wall of the main body 1. A compaction wheel 3 is rotatably connected to the bracket 2. An installation frame 8 is fixedly connected to the outer wall of the bracket 2. Two sets of sliding grooves 17 are provided on the upper and lower sides of the installation frame 8. An upper support plate 12 and a lower support plate 20 are slidably connected inside the two sets of sliding grooves 17, respectively. Lower racks 19 are fixedly connected to both sides of the lower support plate 20. Upper racks 4 are fixedly connected to both sides of the upper support plate 12. Transmission gears 18 are rotatably connected to both sides of the installation frame 8. The transmission gears 18 are meshed with the upper rack 4 and the lower rack 19, respectively.

[0025] A soft brush 13 is fixedly connected to the outer wall of the upper support plate 12, and a hard brush 5 is fixedly connected to the outer wall of the lower support plate 20.

[0026] Before use, the operator can move the entire equipment to the soil surface that needs to be compacted for backfilling the house. During use, the motor inside the main body 1 drives the compaction wheel 3 to roll. As the compaction wheel 3 rolls, it compacts the soil surface (this is existing technology and will not be elaborated further). When the compaction wheel 3 is rolling and compacting the backfill soil surface, if there is relatively loose sand adhering to the compaction wheel 3, the operator can control the two electric telescopic rods 10 to extend. When extended, it pushes the upper support plate 12 towards the compaction wheel 3 until the soft brush 13 contacts the surface of the compaction wheel 3. After the soft brush 13 contacts the surface of the compaction wheel 3, before the compaction wheel 3 rolls to compact the soil, the soft brush 13 will clean the soil adhering to the surface of the compaction wheel 3 to ensure the compaction effect of the compaction wheel 3. If there is sticky soil, such as silty clay with high water content, adhering to the surface of the compaction wheel 3 when it is rolling, the operator can retract the electric telescopic rod 10. When the telescopic rod 10 retracts, it drives the upper support plate 12 to move away from the compaction wheel 3. As the upper support plate 12 moves away from the compaction wheel 3, the soft brush 13 disengages from the compaction wheel 3. Since the upper rack 4 and the transmission gear 18 are meshed, when the upper support plate 12 moves away from the compaction wheel 3, the upper rack 4 causes the transmission gear 18 to rotate clockwise. When the transmission gear 18 rotates clockwise, it meshes with the lower rack 19. When the hard brush 5 is placed, it will push the lower support plate 20 to move closer to the compaction wheel 3 until the hard brush 5 contacts the surface of the compaction wheel 3. When the hard brush 5, which is harder, replaces the soft brush 13 to contact the surface of the compaction wheel 3, it can increase the friction with the surface of the compaction wheel 3, thereby cleaning the clay on the surface of the compaction wheel 3. By setting the soft brush 13 or the hard brush 5, the surface of the compaction wheel 3 can be cleaned in time when the compaction wheel 3 rolls to compact the soil, preventing the surface of the compaction wheel 3 from being covered with mud, which would affect the compaction effect.

[0027] As can be seen from the above, by using the electric telescopic rod 10 to drive the soft brush 13 and hard brush 5 to switch, the cleaning tool can be automatically switched according to the type of soil adhering to the surface of the compaction wheel 3. For sandy soil, the soft brush 13 is used to avoid excessive scraping, while for silty clay with high water content, the high-strength hard brush 5 is used to enhance friction, ensuring that the surface of the compaction wheel 3 is always clean, thus solving the problem of soil adhesion and inconvenient cleaning of traditional compaction wheels 3.

[0028] Through the above technical solution, the electric telescopic rod 10 enables the adaptive switching between the soft brush 13 and the hard brush 5 by precise driving. The telescopic action of the electric telescopic rod 10 is transmitted through the meshing of the upper rack 4 and the transmission gear 18, which simultaneously drives the lower rack 19 to drive the hard brush 5 to move in the opposite direction, forming a seamless switching between the soft brush 13 and the hard brush 5. This allows for directional cleaning of different soil types adhering to the surface of the compaction wheel 3. When loose sand adheres to the surface of the compaction wheel 3, the electric telescopic rod 10 extends to push the soft brush 13 to fit against the wheel surface. The micro-elastic deformation of its flexible bristles penetrates deep into the wheel surface texture, peeling off sand particles under contact pressure, thus avoiding scratches and damage to the wheel surface caused by traditional rigid brush heads. When encountering silty clay with high water content, the electric telescopic rod 10 retracts, causing the soft brush 13 to detach from the surface of the compaction wheel 3. At the same time, through the transmission gear 18 and other mechanisms, the hard brush 5 contacts the wheel surface. The high-strength scraping force of the steel wire bundle breaks the molecular adsorption force between the clay and the metal surface, peeling off the mud film.

[0029] Both sides of the mounting bracket 8 are fixedly connected to protrusions 9, and electric telescopic rods 10 are fixedly connected to the protrusions 9.

[0030] Both sides of the upper support plate 12 are fixedly connected to connectors 11, and the end of the electric telescopic rod 10 away from the protrusion 9 is fixedly connected to the outer wall of the connector 11.

[0031] Hydraulic telescopic rods 14 are fixedly connected to both sides of the left mounting frame 8, and a horizontal plate 15 is fixedly connected to the ends of the hydraulic telescopic rods 14 on both sides. A drive wheel 7 is installed at the tail of the main body 1 of the equipment.

[0032] The main body of the equipment 1 is equipped with a driver's seat 6, and the driver's seat 6 is equipped with drive wheels 7.

[0033] While the front compaction wheel 3 rolls and compacts the soil, the stone-discharging teeth 16 will come into contact with the soil that the compaction wheel 3 is about to compact. During the movement, the soil will be overturned. As the horizontal plate 15 moves in the soil with the compaction wheel 3, the loose soil will slide away through the gaps in the stone-discharging teeth 16. If there are stones in the soil that are larger than the gaps in the stone-discharging teeth 16, they will be blocked by the smaller gaps in the stone-discharging teeth 16 and left on the surface of the stone-discharging teeth 16. They will be continuously pushed by the stone-discharging teeth 16 to prevent the compaction wheel 3 from pressing the stones into the soil layer. By promptly removing the stones in the compacted soil, the compaction effect can be guaranteed.

[0034] As can be seen from the above, the combination structure of the stone-discharging teeth 16 and the horizontal plate 15 can pre-treat the soil before the compaction wheel 3 operates. The gaps between the stone-discharging teeth 16 screen and block stones larger than the gaps, preventing stones from being pressed into the soil layer by the compaction wheel 3 and forming local hard spots or voids. At the same time, loose soil can slide through the gaps between the stone-discharging teeth 16 without affecting the operation. This solves the problem of uneven compaction layer density and easy settlement in the later stage caused by stones mixed in the backfill soil of the house core.

[0035] It should be noted that when the compaction wheel 3 performs secondary compaction on the soil surface, the operator can control the hydraulic telescopic rod 14 to retract, so that the horizontal plate 15 is away from contact with the soil, thus avoiding the stone discharge teeth 16 scratching the first compacted soil surface during secondary compaction.

[0036] It should be noted that soft brush 13 is a nylon bristle brush, and hard brush 5 is a steel wire brush.

[0037] Through the above technical solution, the gap between adjacent teeth of the stone-discharging tooth 16 is strictly controlled at 30±2mm. This size is based on the common stone particle size in the backfill soil of the house core. It ensures that stones with a diameter >30mm are effectively blocked, while allowing loose soil particles with a particle size <30mm to slide smoothly through the gap. During operation, the horizontal plate 15 is suspended in front of the compaction wheel 3 by two hydraulic telescopic rods 14. When the equipment moves forward, the stone-discharging tooth 16 is inserted into the surface soil. During the synchronous movement with the compaction wheel 3, the stone-discharging tooth 16 forms a shearing and overturning effect on the soil. Under the action of gravity and tooth surface guidance, loose soil particles slide from the 30mm gap to the original soil layer, while stones exceeding the gap size are blocked by the tooth tip. Under the action of continuous propulsion, they slide upward along the tooth surface and gather at the front end of the horizontal plate 15, forming a stone accumulation area, preventing them from entering the working range of the compaction wheel 3.

[0038] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A backfill compaction device for atrial cores, comprising a main body (1), characterized in that, A bracket (2) is fixedly connected to the outer wall of the main body (1) of the equipment. A compaction wheel (3) is rotatably connected to the bracket (2). An installation frame (8) is fixedly connected to the outer wall of the bracket (2). Two sets of sliding grooves (17) are provided on the upper and lower sides of the installation frame (8). An upper support plate (12) and a lower support plate (20) are slidably connected inside the two sets of sliding grooves (17). A lower rack (19) is fixedly connected to both sides of the lower support plate (20). An upper rack (4) is fixedly connected to both sides of the upper support plate (12). A transmission gear (18) is rotatably connected to both sides of the installation frame (8). The transmission gear (18) is meshed with the upper rack (4) and the lower rack (19) respectively.

2. The atrial core backfill compaction device according to claim 1, characterized in that: A soft brush (13) is fixedly connected to the outer wall of the upper support plate (12), and a hard brush (5) is fixedly connected to the outer wall of the lower support plate (20).

3. The atrial core backfill compaction device according to claim 1, characterized in that: Both sides of the mounting bracket (8) are fixedly connected to protrusions (9), and electric telescopic rods (10) are fixedly connected to the protrusions (9).

4. The atrial core backfill compaction device according to claim 3, characterized in that: Both sides of the upper support plate (12) are fixedly connected to connectors (11), and the end of the electric telescopic rod (10) away from the protrusion (9) is fixedly connected to the outer wall of the connector (11).

5. The atrial core backfill compaction device according to claim 1, characterized in that: Hydraulic telescopic rods (14) are fixedly connected to both sides of the mounting bracket (8) on the left side. A horizontal plate (15) is fixedly connected to the ends of the hydraulic telescopic rods (14) on both sides. Multiple stone-discharging teeth (16) are provided on the horizontal plate (15).

6. The atrial core backfill compaction device according to claim 1, characterized in that: A driver's seat (6) is installed on the main body (1) of the equipment, and a drive wheel (7) is installed at the rear of the main body (1).

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