An assembled device for removing wall surface floating mud in deep foundation pit underground continuous wall

Abstract

The utility model discloses an assembly type is used for deep foundation pit underground continuous wall inner wall surface floating slurry brush removal device, it includes bush steel brush, connecting plate and excavator bucket, bush steel brush evenly installs at the bottom of connecting plate, and connecting plate is located at the outside of excavator bucket, and connecting plate is detachable with the digging tooth of excavator bucket through fastener. This assembly type is used for deep foundation pit underground continuous wall inner wall surface floating slurry brush removal device and has simple structure, convenient to use, high assembling efficiency, high precision, safe and reliable and so on, can satisfy the demand of the floating slurry brush removal of ground continuous wall inner wall surface.

Description

Technical Field

[0001] This utility model relates to the technical field of construction devices for underground continuous walls in deep foundation pits, specifically a prefabricated device for brushing away laitance on the inner wall surface of underground continuous walls in deep foundation pits. Background Technology

[0002] Diaphragm walls, as an important method of deep foundation pit support, are widely used due to their high rigidity, integrity, durability, and excellent seepage prevention performance. In railway stations using diaphragm walls as retaining structures, it is necessary to clean away any remaining concrete bulges on the surface of the diaphragm walls during earthwork excavation to facilitate the construction of a waterproof surface layer. Typically, the concrete laitance on the inner wall surface of deep foundation pits is removed by cleaning personnel using cleaning tools, followed by surface cleaning. However, due to the considerable height of diaphragm walls, a large number of cleaning personnel are required, the work is time-consuming, and the costs and manpower are substantial, slowing down the subsequent excavation process.

[0003] Therefore, in order to solve the problem of laitance on the inner wall surface of diaphragm walls in deep foundation pits, improve excavation rate and seepage resistance quality, and reduce construction costs and safety risks, it is necessary to design a laitance removal device for the inner wall surface of diaphragm walls in deep foundation pits. Summary of the Invention

[0004] The purpose of this utility model is to address the problems existing in the prior art by providing a prefabricated device for brushing away laitance on the inner wall surface of diaphragm walls in deep foundation pits. This prefabricated device for brushing away laitance on the inner wall surface of diaphragm walls in deep foundation pits has the advantages of simple structure, convenient use, high assembly efficiency, high precision, and safety and reliability, and can meet the needs of brushing away laitance on the inner wall surface of diaphragm walls.

[0005] This utility model is achieved using the following technical solution:

[0006] A prefabricated device for removing laitance from the inner wall surface of a deep foundation pit diaphragm wall includes a bush steel brush, a connecting plate, and an excavator bucket. The bush steel brush is evenly distributed and installed at the bottom of the connecting plate, which is located on the outside of the excavator bucket. The connecting plate is detachably connected to the digging teeth of the excavator bucket by fasteners.

[0007] A further preferred embodiment: The connecting plate includes two parallel upper connecting plates and a lower connecting plate. A limiting seat plate is horizontally welded to the bottom front end of the lower connecting plate. The limiting seat plate is provided with a slot for placing the bush brush. The limiting seat plate can be divided into multiple sections, and the space between each two sections is a slot. The bush brush is installed in the slot between the upper connecting plate and the lower connecting plate. The upper connecting plate and the lower connecting plate are respectively provided with connecting through holes at the corresponding connecting hole positions of the digging teeth. The original connecting holes of the digging teeth are used for connection, and there is no need to modify the excavator bucket.

[0008] A further preferred embodiment: the bush brush includes steel wires and a brush rod, the brush rod is installed in a slot, the brush rod and the slot are fitted with a clearance, the depth of the slot is less than the thickness of the brush rod, multiple steel wires are bundled and fixedly connected to the lower end of the brush rod, and a limiting platform is provided at the upper end of the brush rod for locking at the top of the slot; a limiting plate for pressing the limiting platform is welded laterally to the back of the upper connecting plate.

[0009] A further preferred embodiment: the fastener includes a high-strength bolt, a triangular washer, and a nut. The high-strength bolt passes through the connecting plate and the digging teeth in sequence and then connects to the triangular washer and the nut, thus fixing the connecting plate and the digging teeth together. Because the front end of the excavator's digging teeth is thin and the rear end is thick, a triangular washer is provided in the fastening device, which is used as a washer.

[0010] This prefabricated device for removing laitance from the inner wall surface of diaphragm walls in deep foundation pits includes a bush brush, a connecting plate, and an excavator bucket. The bush brushes are evenly distributed at the bottom of the connecting plate, which is located on the outside of the excavator bucket. The connecting plate is detachably connected to the excavator bucket's teeth via fasteners. During deep foundation pit excavation, after completing a section of excavation, the excavator can install the device to brush away the laitance and soil adhering to the inner wall surface. Utilizing the excavator's mobility and the ability to freely adjust the bucket height and direction of movement, it allows for "brushing as you excavate," enabling rapid, efficient, and thorough cleaning of laitance and soil adhering to the inner wall surface of diaphragm walls during deep foundation pit excavation. Furthermore, operators of each excavator can complete the laitance removal work at higher elevations in a short time, avoiding the time required for scaffolding installation during manual brushing. This not only saves manpower but also does not slow down the foundation pit excavation process, thus improving work efficiency. Therefore, this device is a modular, reusable unit. Once the cleaning work is completed, the brushing device can be removed from the excavator bucket without affecting the excavator's normal excavation work. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the installation structure of a prefabricated device for brushing away laitance from the inner wall surface of a deep foundation pit diaphragm wall.

[0012] Figure 2 for Figure 1 Schematic diagram of the connection structure between the middle connecting plate and the excavator bucket;

[0013] Figure 3 This is a schematic diagram of the upper connecting plate.

[0014] Figure 4 A schematic diagram of the connection structure between the bush steel brush and the lower connecting plate;

[0015] The component names corresponding to the serial numbers in the diagram are:

[0016] 1. Bush brush; 2. Connecting plate; 3. High-strength bolt; 4. Excavator bucket; 5. Lower connecting plate; 6. Upper connecting plate; 7. Digging teeth; 8. Triangular pad; 9. Nut; 10. Limiting plate; 11. Connecting through hole; 12. Limiting seat plate; 13. Slot; 14. Steel wire; 15. Brush rod; 16. Limiting platform. Detailed Implementation

[0017] The technical solutions of the invention will be clearly and completely described below with reference to the embodiments. The described embodiments are only a part of the present utility model, and not all of the embodiments. Example

[0018] A prefabricated device for removing laitance from the inner wall surface of a deep foundation pit diaphragm wall includes a bush steel brush 1, a connecting plate 2, and an excavator bucket 4. The bush steel brush 1 is evenly distributed and installed at the bottom of the connecting plate 2, which is located on the outside of the excavator bucket 4. The connecting plate 2 is detachably connected to the digging teeth 7 of the excavator bucket 4 by fasteners.

[0019] The connecting plate 2 includes two parallel upper connecting plate 5 and lower connecting plate 6. A limiting seat plate 12 is horizontally welded to the bottom front end of the lower connecting plate 6. The limiting seat plate 12 is provided with a slot 13 for placing the bush brush 1. The limiting seat plate 12 can be divided into multiple segments, and the space between each two segments is the slot 13. The bush brush 1 is installed in the slot 13 between the upper connecting plate 5 and the lower connecting plate 6. The upper connecting plate 5 and the lower connecting plate 6 are respectively provided with connecting through holes 11 at the corresponding connecting hole positions of the digging teeth 7. The upper connecting plate 5 and the lower connecting plate 6 are made of two steel plates of the same size, and their strength must be sufficient to prevent deformation during operation.

[0020] The bush brush 1 includes steel wires 14 and brush rods 15. The brush rods 15 are installed in slots 13 with a clearance fit. The depth of the slots 13 is less than the thickness of the brush rods 15. Multiple steel wires 14 are bundled and fixedly connected to the lower end of the brush rods 15. A limiting platform 16 is provided at the upper end of the brush rods 15 for locking onto the top of the slots 13. A limiting plate 10 for pressing against the limiting platform 16 is welded laterally to the back of the upper connecting plate 5. The steel wires 14 are made of high-strength, high-hardness high-carbon steel wire, and their length depends on the actual use. After installation, the length of the steel wires should exceed the digging teeth 7.

[0021] The fasteners include a high-strength bolt 3, a triangular washer 8, and a nut 9. The high-strength bolt 3 passes through the connecting plate 2 and the cutting tooth 7 in sequence and then connects to the triangular washer 8 and the nut 9. The connecting plate 2 and the cutting tooth 7 are fixedly connected by the high-strength bolt 3, the triangular washer 8, and the nut 9.

[0022] During installation, place the brush rod 15 of the bush steel brush 1 into the corresponding slot 13 on the lower connecting plate 5, and the limiting platform 16 is locked on the top of the slot 13. Then, cover the upper connecting plate 6, and the limiting plate 10 on the upper connecting plate 6 presses against the top of the limiting platform 16, restricting the bush steel brush 1 between the upper connecting plate 6 and the lower connecting plate 5. Insert the high-strength bolt 3 into the connecting through hole 11 and pass it through the corresponding digging tooth 7 of the excavator bucket 4. Insert the triangular washer 8 and nut 9 into the high-strength bolt 3 in sequence, and finally tighten the nut 9.

[0023] The above description is not intended to limit the present utility model, nor is the present utility model limited to the above examples. Any changes, modifications, additions or substitutions made by those skilled in the art within the scope of the present utility model should be protected by the present utility model.

Claims

1. A prefabricated device for brushing away laitance on the inner wall surface of a deep foundation pit diaphragm wall, characterized in that: The device includes a bush brush (1), a connecting plate (2), and an excavator bucket (4). The bush brushes (1) are evenly distributed and installed at the bottom of the connecting plate (2). The connecting plate (2) is located on the outside of the excavator bucket (4). The connecting plate (2) is detachably connected to the digging teeth (7) of the excavator bucket (4) by fasteners. The connecting plate (2) includes two parallel upper connecting plates (5) and a lower connecting plate (6). A limiting seat plate (12) is horizontally welded to the front bottom end of the lower connecting plate (6). The limiting seat plate (12) is provided with a slot (13) for placing the bush brushes (1). The bush brushes (1) are installed in the slot (13) between the upper connecting plate (5) and the lower connecting plate (6). (6) Connecting through holes (11) are respectively provided at the corresponding connecting hole positions of the upper digging teeth (7). The upper connecting plate (5) and the lower connecting plate (6) are made of two steel plates of the same size. The bush steel brush (1) includes steel wire (14) and brush rod (15). The brush rod (15) is installed in the slot (13). The brush rod (15) and the slot (13) are fitted with a clearance. The depth of the slot (13) is less than the thickness of the brush rod (15). Multiple steel wires (14) are bundled and fixedly connected to the lower end of the brush rod (15). The upper end of the brush rod (15) is provided with a limiting platform (16) for locking at the top of the slot (13). A limiting plate (10) for pressing the limiting platform (16) is welded horizontally on the back of the upper connecting plate (5).

2. The prefabricated device for removing laitance from the inner wall surface of a deep foundation pit diaphragm wall as described in claim 1, characterized in that: The fasteners include a high-strength bolt (3), a triangular washer (8), and a nut (9). The high-strength bolt (3) passes through the connecting plate (2) and the cutting tooth (7) in sequence and then connects to the triangular washer (8) and the nut (9). The connecting plate (2) and the cutting tooth (7) are fixedly connected by the high-strength bolt (3), the triangular washer (8), and the nut (9).

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