Foundation pit retaining drainage device
By designing an adjustable foundation pit retaining drainage device, and utilizing multi-stage electro-hydraulic rods and a lateral adjustment mechanism, the drainage problem of foundation pits of different depths and sizes was solved, achieving efficient drainage of accumulated water from the foundation pit.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHINA RAILWAY FIFTH GROUP SECOND ENGINEERING CO LTD
- Filing Date
- 2025-05-10
- Publication Date
- 2026-06-02
AI Technical Summary
Existing foundation pit retaining devices are difficult to adapt to foundation pits of different depths and sizes, resulting in low drainage efficiency and inability to effectively drain water from the foundation pit.
The device employs components such as a top box, dual-axis motor, telescopic square column, support frame, self-locking casters, multi-stage electro-hydraulic rod, and lateral adjustment mechanism to achieve adjustability and flexible movement. Combined with the position adjustment of the suction steel pipe and filter shell, it ensures effective drainage for different foundation pits.
It enables flexible adaptation to foundation pits of different depths and sizes, improves drainage efficiency and applicability, and ensures effective drainage of water accumulated in the foundation pit.
Smart Images
Figure CN224314228U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of foundation pit retaining drainage technology, and more specifically, to a foundation pit retaining drainage device. Background Technology
[0002] Foundation pit support refers to a temporary or permanent support system set up to ensure the safety of foundation pit construction and the stability of the surrounding environment. It mainly includes structural forms such as retaining walls, water stops, and supports. The foundation pit support system is an organic whole in which the soil and support structure work together. Due to the constraints of surrounding buildings and underground pipelines, higher requirements are placed on the safety of the support structure. It must not only ensure the stability of the foundation pit and the safety and convenience of operations inside the pit, but also control the displacement of the soil at the bottom and outside the pit within a certain range to ensure the normal use of adjacent buildings and municipal facilities. In addition, water may accumulate in the foundation pit during the foundation pit support process, which needs to be drained.
[0003] A search revealed that utility model patent CN214401853U discloses a drainage device for foundation pit protection, comprising a main pipe and a bottom pipe. A water pump is fixedly connected to the outer left side of the main pipe, and a first filter element is provided on the inner wall of the main pipe. A first branch pipe is fixedly connected to the outer left bottom side of the main pipe, a second branch pipe is fixedly connected to the bottom left end of the main pipe, a third branch pipe is fixedly connected to the bottom right end of the main pipe, and a fourth branch pipe is fixedly connected to the outer right side of the main pipe. A first stabilizing rod is fixedly connected to the outer wall of the middle section of the first, second, third, and fourth branch pipes, and a second stabilizing rod is fixedly connected to the outer wall of the bottom section of the first, second, third, and fourth branch pipes. The bottom of the first, second, third, and fourth branch pipes is fixedly connected to the bottom pipe. This patent improves the drainage efficiency of the device during operation, alleviates the load pressure caused by a single pipeline, and alleviates the problem of easy blockage inside the pipeline and water pump. However, the above patents still have the following shortcomings: the depth of the foundation pit varies, which makes it inconvenient to drain foundation pits of different depths. In addition, the size of the foundation pit enclosure space varies, but the length between the bottom pipe, the first water intake port and the second water intake port is fixed, which makes it inconvenient to drain foundation pits with different inner diameters. Therefore, we propose a foundation pit enclosure drainage device. Utility Model Content
[0004] In view of the problems existing in the prior art, the purpose of this utility model is to provide a foundation pit retaining drainage device.
[0005] To solve the above problems, the present invention adopts the following technical solution:
[0006] A foundation pit retaining drainage device includes a top box. A dual-shaft motor is fixedly installed in the center of the top box's inner cavity. The two output shafts of the dual-shaft motor are respectively fixedly connected to first screws via couplings. Telescopic square columns are threaded onto the outer sides of the two first screws. One end of each of the two telescopic square columns extends to the outside of the top box and is fixedly connected to a support frame. Two self-locking casters are fixedly installed at the bottom ends of the two support frames. Multiple multi-stage electro-hydraulic rods are fixedly installed on the bottom surface of the top box, and the bottom ends of the multiple multi-stage electro-hydraulic rods are fixedly connected to... The device includes a lifting base, a collection pipe fixedly connected to the top surface of the lifting base, a water pumping mechanism on the top box, four horizontal adjustment mechanisms at the bottom of the lifting base, a fixed seat on each of the four horizontal adjustment mechanisms, a water suction steel pipe fixedly sleeved on each of the four fixed seats, a filter mechanism at the bottom end of each of the four water suction steel pipes, an electric control valve fixedly connected to the top end of each of the four water suction steel pipes, a water suction flexible branch pipe fixedly connected to the top end of each of the four electric control valves, and the ends of each of the four water suction flexible branch pipes fixedly sleeved into the inner cavity of the collection pipe.
[0007] As a preferred embodiment of this utility model, the lateral adjustment mechanism includes an extension box fixedly connected to the bottom surface of the lifting seat. A servo motor is fixedly installed at the end of the extension box. The output shaft of the servo motor extends into the inner cavity of the extension box and is fixedly connected to a second screw via a coupling. An extension column is threaded onto the outer side of the second screw. The end of the extension column extends to the outside of the extension box and is fixedly connected to the fixed seat. The side of the extension column fits against the inner wall of the extension box.
[0008] As a preferred embodiment of this utility model, the filtration mechanism includes a filter shell fixedly sleeved on the bottom end of the water-absorbing steel pipe, the filter shell having multiple water inlet holes on its side, and a filter element sleeved in the inner cavity of the filter shell.
[0009] As a preferred embodiment of this utility model, the pumping mechanism includes a water pump fixedly installed on the top surface of the top box, the input end of the water pump is fixedly connected to a flexible pumping pipe, the end of the flexible pumping pipe is fixedly sleeved into the inner cavity of the collection pipe, and the output end of the water pump is fixedly connected to a drain pipe.
[0010] As a preferred embodiment of this utility model, a control panel is fixedly installed on the outer side of one of the support frames, and a storage battery is provided on the top surface of the top box.
[0011] In a preferred embodiment of this utility model, the side of the telescopic square column is fitted to the inner wall of the top box.
[0012] Compared with existing technologies, the advantages of this utility model are:
[0013] (1) In this utility model, the width of the device can be adjusted by the cooperation of the top box, dual-axis motor, first screw, telescopic square column, support frame and self-locking casters, so that the device can be moved above the foundation pit of different sizes for drainage. In addition, the multi-stage electric hydraulic rod can drive the lifting seat, water suction steel pipe and filter shell to move up and down, so that the bottom surface of the filter shell and the bottom surface of the foundation pit come into contact, so as to realize drainage of different foundation pits.
[0014] (2) In this utility model, four horizontal adjustment mechanisms are set below the lifting seat. The horizontal position of the fixed seat, the water suction steel pipe and the filter shell can be adjusted by the cooperation of the extension box, the servo motor, the second screw and the extension column in the horizontal adjustment mechanism. The position of the four filter shells can be adjusted according to the size of the pit so that drainage can be carried out from different positions of the pit. At the same time, the device can drain pits of different sizes, which is practical. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0016] Figure 2 This is a cross-sectional schematic diagram of the top box of this utility model;
[0017] Figure 3 This is a cross-sectional schematic diagram of the extension box of this utility model;
[0018] Figure 4 This is a schematic diagram of the filter mechanism of this utility model.
[0019] Explanation of the labels in the diagram:
[0020] 1. Top box; 2. Dual-axis motor; 3. First screw; 4. Telescopic square column; 5. Support frame; 6. Self-locking casters; 7. Multi-stage electro-hydraulic rod; 8. Lifting seat; 9. Main pipe; 10. Lateral adjustment mechanism; 11. Fixed seat; 12. Suction steel pipe; 13. Filter mechanism; 14. Electrically controlled valve; 15. Suction flexible branch pipe; 16. Water pump; 17. Pumping flexible main pipe; 18. Drain pipe; 19. Pumping mechanism; 20. Extension box; 21. Servo motor; 22. Second screw; 23. Extension column; 24. Filter shell; 25. Water inlet; 26. Filter element; 27. Control panel; 28. Battery. Detailed Implementation
[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.
[0022] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0023] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0024] Example 1:
[0025] Please see Figure 1-4 A foundation pit retaining drainage device includes a top box 1. A dual-shaft motor 2 is fixedly installed in the middle of the inner cavity of the top box 1. The two output shafts of the dual-shaft motor 2 are respectively fixedly connected to first screws 3 via couplings. Telescopic square columns 4 are threadedly sleeved on the outer sides of the two first screws 3. One end of each telescopic square column 4 extends to the outside of the top box 1 and is fixedly connected to a support frame 5. Two self-locking casters 6 are fixedly installed at the bottom ends of the two support frames 5. Multiple multi-stage electro-hydraulic rods 7 are fixedly installed on the bottom surface of the top box 1. Lifting seats 8 are fixedly connected to the bottom ends of the multiple multi-stage electro-hydraulic rods 7. A collection pipe 9 is fixedly connected to the top surface of the lifting seat 8. A water pumping mechanism 19 is provided on the top box 1. Four horizontal adjustment mechanisms 10 are provided at the bottom of the lifting seat 8. Each of the four horizontal adjustment mechanisms 10 is provided with a fixed seat 11. A water suction steel pipe 12 is fixedly sleeved on each of the four fixed seats 11. A filter mechanism 13 is provided at the bottom end of each of the four water suction steel pipes 12. An electric control valve 14 is fixedly connected to the top end of each of the four electric control valves 14. A water suction flexible branch pipe 15 is fixedly connected to the top end of each of the four water suction flexible branch pipes 15. The ends of each of the four water suction flexible branch pipes 15 are fixedly sleeved into the inner cavity of the collection pipe 9.
[0026] For details, please refer to Figure 1 and Figure 3The lateral adjustment mechanism 10 includes an extension box 20 fixedly connected to the bottom surface of the lifting seat 8. A servo motor 21 is fixedly installed at the end of the extension box 20. The output shaft of the servo motor 21 extends into the inner cavity of the extension box 20 and is fixedly connected to a second screw 22 via a coupling. An extension column 23 is threaded onto the outer side of the second screw 22. The end of the extension column 23 extends to the outside of the extension box 20 and is fixedly connected to the fixed seat 11. The side of the extension column 23 fits against the inner wall of the extension box 20.
[0027] In this embodiment, the inner wall of the extension box 20 is used to limit the extension column 23, so that the extension column 23 can only move along the axial direction of the second screw 22. At the same time, the extension column 23 is provided with a screw hole that matches the second screw 22, so that the second screw 22 and the extension column 23 can be smoothly threadedly transmitted.
[0028] For details, please refer to Figure 1 and Figure 4 The filtration mechanism 13 includes a filter shell 24 fixedly sleeved on the bottom end of the water suction steel pipe 12. Multiple water inlet holes 25 are opened on the side of the filter shell 24, and a filter element 26 is sleeved in the inner cavity of the filter shell 24.
[0029] In this embodiment, the water inlet hole 25 is used to prevent stones from entering the inner cavity of the filter shell 24, and the filter element 26 is used to prevent soil from being drawn into the inner cavity of the water suction pipe 12.
[0030] For details, please refer to Figure 1 and Figure 2 The pumping mechanism 19 includes a water pump 16 fixedly installed on the top surface of the top box 1. The input end of the water pump 16 is fixedly connected to a flexible water pumping pipe 17. The end of the flexible water pumping pipe 17 is fixedly sleeved into the inner cavity of the collection pipe 9. The output end of the water pump 16 is fixedly connected to a drain pipe 18.
[0031] In this embodiment, the water pumped out of the foundation pit is discharged to the outside, such as into an external sewer, through the drain pipe 18.
[0032] For details, please refer to Figure 1 A control panel 27 is fixedly installed on the outside of a support frame 5, and a battery 28 is installed on the top surface of the top box 1.
[0033] In this embodiment, the control panel 27 is electrically connected to the water pump 16, the multi-stage electro-hydraulic rod 7, the dual-axis motor 2, the solenoid valve 14, and the servo motor 21, respectively. The control panel 27 controls the water pump 16, the multi-stage electro-hydraulic rod 7, the dual-axis motor 2, the solenoid valve 14, and the servo motor 21. The battery 28 is electrically connected to the control panel 27, the water pump 16, the multi-stage electro-hydraulic rod 7, the dual-axis motor 2, the solenoid valve 14, and the servo motor 21, respectively, and supplies power to the control panel 27, the water pump 16, the multi-stage electro-hydraulic rod 7, the dual-axis motor 2, the solenoid valve 14, and the servo motor 21.
[0034] For details, please refer to Figure 2 The side of the telescopic square column 4 fits into the inner wall of the top box 1.
[0035] In this embodiment, the inner wall of the top box 1 is used to limit the telescopic column 4, so that the telescopic column 4 can only move along the axial direction of the first screw 3, while ensuring the stability of the telescopic column 4 in the top box 1. In addition, the first screws 3 at both ends of the dual-axis motor 2 rotate in opposite directions, and the two telescopic columns 4 are provided with screw holes that are compatible with the first screws 3, so that the first screws 3 and the telescopic columns 4 can be smoothly threaded.
[0036] Working Principle: In use, the dual-axis motor 2 is first started, driving the two first screws 3 to rotate. The threaded engagement between the two first screws 3 and the two telescopic columns 4 causes the two telescopic columns 4 and the two support frames 5 to move away from each other, making the distance between the two support frames 5 greater than the pit opening size. This allows the self-locking casters 6 to push the device above the pit. The self-locking function of the casters 6 then secures the device. Next, four servo motors 21 are started, driving the four second screws 22 to rotate. The threaded engagement between the second screws 22 and the extension column 23 moves the extension column 23, the fixed base 11, and the suction steel pipe 12, positioning the four suction steel pipes 12 and the filter shells 24 at their bottoms at different positions above the pit. This facilitates subsequent cleaning of different locations within the pit. First, drain the water. Then, activate the multi-stage electric hydraulic rod 7 to move the lifting seat 8, extension box 20, suction steel pipe 12, and filter shell 24 downwards, so that the filter shell 24 extends into the foundation pit and the bottom surface of the filter shell 24 contacts the bottom of the foundation pit. Finally, open the electric control valve 14 at the top of the four suction steel pipes 12 and start the water pump 16 to generate suction through the main suction pipe 17, the collection pipe 9, the four suction branch pipes 15, the four suction steel pipes 12, and the four filter shells 24. This allows the water in the foundation pit to enter the inner cavity of the filter shell 24 through the water inlet 25. The filter element 26 filters the mud in the water. The filtered water is collected from the suction steel pipe 12, the electric control valve 14, and the suction branch pipes 15 into the collection pipe 9. The collected water in the collection pipe 9 is then discharged through the main suction pipe 17 and the pumping mechanism 19.
[0037] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model based on the technical solution and its improved concept should be covered within the protection scope of the present utility model.
Claims
1. A retaining wall drainage device for a foundation pit, characterised in that: The system includes a top box (1), in which a dual-axis motor (2) is fixedly installed in the middle of the inner cavity of the top box (1). The two output shafts of the dual-axis motor (2) are respectively fixedly connected to first screws (3) via couplings. Telescopic square columns (4) are threaded onto the outer sides of the two first screws (3). One end of each telescopic square column (4) extends to the outside of the top box (1) and is fixedly connected to a support frame (5). Two self-locking casters (6) are fixedly installed at the bottom ends of the two support frames (5). Multiple multi-stage electric hydraulic rods (7) are fixedly installed on the bottom surface of the top box (1). Lifting seats (8) are fixedly connected to the bottom ends of the multiple multi-stage electric hydraulic rods (7). The top of the lifting seat (8) is... A collection pipe (9) is fixedly connected to the top box (1). A water pumping mechanism (19) is provided on the top box (1). Four horizontal adjustment mechanisms (10) are provided at the bottom of the lifting seat (8). Each of the four horizontal adjustment mechanisms (10) is provided with a fixed seat (11). Each of the four fixed seats (11) is fixedly sleeved with a water suction steel pipe (12). Each of the four water suction steel pipes (12) is provided with a filter mechanism (13) at the bottom end. Each of the four water suction steel pipes (12) is fixedly connected with an electric control valve (14) at the top end. Each of the four electric control valves (14) is fixedly connected with a water suction soft branch pipe (15) at the top end. Each of the four water suction soft branch pipes (15) is fixedly sleeved into the inner cavity of the collection pipe (9).
2. The retaining wall drainage device according to claim 1, wherein: The lateral adjustment mechanism (10) includes an extension box (20) fixedly connected to the bottom surface of the lifting seat (8). A servo motor (21) is fixedly installed at the end of the extension box (20). The output shaft of the servo motor (21) extends into the inner cavity of the extension box (20) and is fixedly connected to a second screw (22) via a coupling. An extension column (23) is threaded onto the outer side of the second screw (22). The end of the extension column (23) extends to the outside of the extension box (20) and is fixedly connected to the fixed seat (11). The side of the extension column (23) fits against the inner wall of the extension box (20).
3. The retaining wall drainage device according to claim 1, wherein: The filtration mechanism (13) includes a filter shell (24) fixedly sleeved on the bottom end of the water-absorbing steel pipe (12). The filter shell (24) has multiple water inlet holes (25) on its side and a filter element (26) sleeved in the inner cavity of the filter shell (24).
4. The foundation pit retaining drainage device according to claim 1, characterized in that: The pumping mechanism (19) includes a water pump (16) fixedly installed on the top surface of the top box (1). The input end of the water pump (16) is fixedly connected to a pumping soft pipe (17). The end of the pumping soft pipe (17) is fixedly sleeved to the inner cavity of the collection pipe (9). The output end of the water pump (16) is fixedly connected to a drain pipe (18).
5. A foundation pit retaining drainage device according to claim 1, characterized in that: A control panel (27) is fixedly installed on the outside of one of the support frames (5), and a battery (28) is provided on the top surface of the top box (1).
6. The foundation pit retaining drainage device according to claim 1, characterized in that: The side of the telescopic column (4) fits against the inner wall of the top box (1).