Deep foundation pit supporting structure

Abstract

The utility model discloses a deep foundation pit supporting structure which comprises a base, supporting mechanisms are arranged at the four corners of the outer side of the base, electric push rods are arranged on the two sides of the base, the telescopic ends of the electric push rods are fixedly connected with movable plates, rotating grooves are formed in one sides of the movable plates, the inner side walls of the rotating grooves are rotationally connected with rotating blocks, and the rotating blocks are fixedly connected with the base. Supporting plates are fixedly connected to the upper ends of the rotating blocks, and angle adjusting mechanisms are fixedly connected to the tops of the sides, close to each other, of the two supporting plates. The equipment can be adjusted according to the actual width of a foundation pit through the arranged supporting mechanism so as to meet the supporting requirements of foundation pits with different widths, during use, a screw rod is rotated through a rotating handle, and the inner wall of a nut is in threaded connection with the outer wall of the screw rod; and through the arranged angle adjusting mechanism, the equipment can be adjusted according to the actual inclination angle of the side wall of the foundation pit so as to meet the foundation pit supporting requirements under different terrain conditions, and the angle of the supporting plate can be adjusted.

Description

Technical Field

[0001] This utility model relates to the field of deep foundation pit support technology, specifically to a deep foundation pit support structure. Background Technology

[0002] Foundation pit support is a measure to ensure the safety of underground structure construction and the surrounding environment of the foundation pit. It involves supporting, reinforcing, and protecting the sidewalls and surrounding environment of the foundation pit. Currently, steel sheet pile support is widely used due to its advantages such as high strength, easy penetration into hard soil layers, ability to be constructed in deep water, good waterproof performance, ability to form cofferdams of various shapes as needed, and reusability. Deep foundation pit support refers to the measures taken to support, reinforce, and protect the sidewalls and surrounding environment of deep foundation pits to ensure the safety of underground structure construction and the surrounding environment of the foundation pit. Therefore, steel sheet pile support structures are often needed to support foundation pits during road construction.

[0003] According to patent document CN113494093B, a deep foundation pit support structure is disclosed, including a load-bearing plate and a support rod disposed on one side of the load-bearing plate. An insert rod is connected to the side of the load-bearing plate away from the support rod. A fixing hole extending along its own length is opened on the end face of the insert rod near the load-bearing plate. A grouting hole communicating with the fixing hole is opened on the load-bearing plate. A guide hole communicating with the outer wall of the insert rod is opened on the wall of the fixing hole. An elastic piece for opening and closing the guide hole is provided on the insert rod. One end of the elastic piece is a fixed end fixed to the side wall of the guide hole away from the load-bearing plate, and the other end is a movable end extending away from the insert rod. An opening and closing component for pushing the elastic piece to open the guide hole is connected to the insert rod.

[0004] Currently, in practical applications of traditional deep foundation pit support structures, the width of the pit varies depending on the construction of the pit. Since the length of the steel supports is not adjustable, steel supports of different lengths need to be fabricated to support the steel sheet piles for foundation pits of different widths, thereby reducing the efficiency of foundation pit support. Utility Model Content

[0005] The purpose of this utility model is to provide a deep foundation pit support structure to solve the problem mentioned in the background art that, in actual use, the width of the pit varies in different foundation pit constructions, and the length of the steel support is not adjustable. This results in the need to manufacture steel supports of different lengths to support the steel sheet piles for foundation pits of different widths, thereby reducing the efficiency of foundation pit support.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a base is included, with support mechanisms provided at the four outer corners of the base, electric push rods provided on both sides of the base, a movable plate fixedly connected to the telescopic end of the electric push rod, a rotating groove opened on one side of the movable plate, a rotating block rotatably connected to the inner side wall of the rotating groove, a support plate fixedly connected to the upper end of the rotating block, and an angle adjustment mechanism fixedly connected to the top of the side of the two support plates that are close to each other.

[0007] The support mechanism includes a nut, the lower end of which is fixedly connected to the upper end of the base around the perimeter. A screw is provided on the inner wall of the nut, and a support plate is provided at the lower end of the screw. An insert rod is fixedly connected to the lower end of the support plate. Guide rods are fixedly connected to the four corners of the upper end of the support plate. Limit blocks are fixedly connected to the upper ends of the guide rods. A rotating handle is fixedly connected to the upper end of the screw.

[0008] Preferably, the inner wall of the nut is threaded to the outer wall of the screw, and the lower end of the screw is rotatably connected to the upper end of the support plate.

[0009] Preferably, the guide rod and the limiting block are provided in a quantity of four, and all of them are slidably connected to the four corners of the base.

[0010] Preferably, the lower end of the support mechanism is fixedly connected to the four corners of the upper end of the base, and one side of the electric push rod is fixedly connected to both sides of the base.

[0011] Preferably, the angle adjustment mechanism includes a slide rail, one side of which is fixedly connected to one side of the support plate. The inner wall of the slide rail is provided with an adjustment hole. The front and rear ends of the slide rail are provided with slide grooves. A slider is slidably connected to the inner wall of the slide groove. A hinge seat is fixedly connected to one side of the slider. An adjustment bolt is inserted into the middle of one side of the hinge seat. A top rod is rotatably connected to the inner wall of the hinge seat. A telescopic rod is hinged to the lower end of the top rod. A circular plate is fixedly connected to one end of the top rod. A sleeve is sleeved on the outer wall of the circular plate. A double-headed motor is fixedly connected to the middle of the inner wall of the sleeve. Lead screws are driven to both sides of the double-headed motor. A threaded hole is opened on the inner wall of the top rod.

[0012] Preferably, the inner wall of the slide rail is connected through the outer wall of the adjustment hole, and the front and rear ends of the slide rail are both embedded with slide grooves.

[0013] Preferably, the outer wall of the circular plate is slidably connected to one side of the inner wall of the sleeve and their shapes are compatible.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] 1. The support mechanism allows the equipment to be adjusted according to the actual width of the pit to adapt to the support needs of pits of different widths. During use, the screw is rotated by the handle. Because the inner wall of the nut is threadedly connected to the outer wall of the screw, the screw can move up and down on the inner wall of the nut, thereby driving the support plate and the insert rod at the lower end of the support plate to move up and down, thus adjusting the height of the support mechanism. This allows the entire support structure to adapt to pits of different depths. At the same time, the guide rod and limit block not only provide guidance for the screw's lifting and lowering movement, but also limit the screw's lifting and lowering range, preventing the screw from dislodging from the nut and ensuring the stability and safety of the support structure. In addition, the telescopic movement of the electric push rod can drive the movable plate and the support plate at the upper end of the movable plate to move, thereby adjusting the distance between the two support plates and further adapting to pits of different widths.

[0016] 2. The angle adjustment mechanism allows the equipment to be adjusted according to the actual inclination angle of the pit sidewall to adapt to the support requirements under different terrain conditions. It enables adjustment of the support plate angle, allowing the support plate to better fit the pit sidewall and improve the support effect. Specifically, by adjusting the position of the slider on the slide rail, the relative position between the hinge seat and the support plate can be changed, thereby adjusting the angle between the top rod and the telescopic rod. Subsequently, a double-headed motor drives the lead screw to rotate. Because the lead screw is threadedly connected to the inner wall of the top rod, the top rod can extend and retract within the sleeve, thus achieving precise adjustment of the support plate angle. This design not only improves the flexibility and adaptability of the support structure but also ensures a tight fit between the support plate and the pit sidewall, effectively enhancing the support effect and construction safety. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0018] Figure 2 This is a schematic diagram of the support mechanism structure of this utility model;

[0019] Figure 3 This is a schematic diagram of the angle adjustment mechanism of this utility model;

[0020] Figure 4 This is a partial three-dimensional side view structural diagram of the present invention.

[0021] In the diagram: 1. Base; 2. Support mechanism; 3. Electric push rod; 4. Movable plate; 5. Rotating groove; 6. Rotating block; 7. Support plate; 8. Angle adjustment mechanism; 21. Nut; 22. Screw; 23. Support plate; 24. Insert rod; 25. Guide rod; 26. Limiting block; 27. Rotating handle; 81. Slide rail; 82. Adjusting hole; 83. Slide groove; 84. Slider; 85. Hinge seat; 86. Adjusting bolt; 87. Top rod; 88. Telescopic rod; 89. Circular plate; 810. Sleeve; 811. Double-headed motor; 812. Lead screw; 813. Lead hole. Detailed Implementation

[0022] 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.

[0023] Please see Figure 1 , Figure 2 and Figure 4 This utility model provides a technical solution: a deep foundation pit support structure, including a base 1, with support mechanisms 2 set at the four outer corners of the base 1, electric push rods 3 set on both sides of the base 1, and movable plates 4 fixedly connected to the telescopic ends of the electric push rods 3. A rotating groove 5 is opened on one side of the movable plate 4, and a rotating block 6 is rotatably connected to the inner side wall of the rotating groove 5. A support plate 7 is fixedly connected to the upper end of the rotating block 6, and an angle adjustment mechanism 8 is fixedly connected to the top of the side of the two support plates 7 that are close to each other. The support mechanism 2 includes a nut 21, the lower end of which is fixedly connected to the upper end of the base 1 around the perimeter, and a screw 2 is set on the inner wall of the nut 21. 2. A support plate 23 is provided at the lower end of the screw 22. A plug rod 24 is fixedly connected to the lower end of the support plate 23. Guide rods 25 are fixedly connected to the four corners of the upper end of the support plate 23. Limiting blocks 26 are fixedly connected to the upper end of the guide rods 25. A rotating handle 27 is fixedly connected to the upper end of the screw 22. The inner wall of the nut 21 is threadedly connected to the outer wall of the screw 22. The lower end of the screw 22 is rotatably connected to the upper end of the support plate 23. There are four guide rods 25 and limiting blocks 26, and they are all slidably connected to the four corners of the base 1. The lower end of the support mechanism 2 is fixedly connected to the four corners of the upper end of the base 1. One side of the electric push rod 3 is fixedly connected to both sides of the base 1.

[0024] Several support mechanisms 2 are installed at the four outer corners of the base 1. Additionally, electric push rods 3 are provided on both sides of the base 1. The telescopic ends of these electric push rods 3 are securely connected to movable plates 4. A rotating groove 5 is provided on one side of the movable plate 4, and a rotating block 6 is rotatably connected to the inner wall of the rotating groove 5. A support plate 7 is fixedly installed on the upper end of the rotating block 6. Two support plates 7 are connected to each other on their adjacent sides via an angle adjustment mechanism 8. The support mechanism 2 is composed of nuts 21, the lower end of which is tightly fixed to the upper perimeter of the base 1. A screw 22 is provided in the inner wall of the nut 21, and the lower end of the screw 22 is installed with… There is a support plate 23, and several insert rods 24 are fixedly connected to the lower end of the support plate 23. Guide rods 25 are fixedly connected to the four corners of the upper end of the support plate 23. Limiting blocks 26 are fixedly connected to the upper end of the guide rods 25. A rotating handle 27 is fixedly connected to the upper end of the screw 22. The inner wall of the nut 21 is tightly connected to the outer wall of the screw 22 by threads. The lower end of the screw 22 is rotatably connected to the upper end of the support plate 23. There are four guide rods 25 and four limiting blocks 26. They are all slidably connected to the four corners of the base 1. The lower end of the support mechanism 2 is firmly fixed to the four corners of the upper end of the base 1. One side of the electric push rod 3 is fixedly connected to both sides of the base 1.

[0025] Please see Figure 1 , Figure 3 and Figure 4 The angle adjustment mechanism 8 includes a slide rail 81, one side of which is fixedly connected to one side of the support plate 7. An adjustment hole 82 is provided on the inner wall of the slide rail 81. Slide grooves 83 are provided at both the front and rear ends of the slide rail 81. A slider 84 is slidably connected to the inner wall of the slide groove 83. A hinge seat 85 is fixedly connected to one side of the slider 84. An adjusting bolt 86 is inserted into the middle of one side of the hinge seat 85. A push rod 87 is rotatably connected to the inner wall of the hinge seat 85. A telescopic rod 88 is hinged to the lower end of the push rod 87. One end of the rod 87 is fixedly connected to a circular plate 89. A sleeve 810 is fitted onto the outer wall of the circular plate 89. A double-headed motor 811 is fixedly connected to the middle of the inner wall of the sleeve 810. Lead screws 812 are connected to both sides of the double-headed motor 811. A threaded hole 813 is opened on the inner wall of the push rod 87. The inner wall of the slide rail 81 is connected to the outer wall of the adjustment hole 82. The front and rear ends of the slide rail 81 are both embedded with sliding grooves 83. The outer wall of the circular plate 89 is slidably connected to one side of the inner wall of the sleeve 810 and their shapes are compatible.

[0026] The dual-head motor 811 operates, driving the lead screw 812 to rotate. Since the outer wall of the lead screw 812 is threadedly connected to the threaded hole 813 on the inner wall of the top rod 87, the rotation of the lead screw 812 allows the top rod 87 to move up and down within the sleeve 810. Simultaneously, one end of the top rod 87 rotates within the hinge seat 85. The lower end of the top rod 87, through a hinge, allows for angle adjustment of the telescopic rod 88, thereby adjusting the tilt angle of the support plate 7. This enables the support plate 7 to provide more stable support for the pit sidewall, preventing collapse and improving the support efficiency of the pit support structure. The angle adjustment mechanism 8 allows for free adjustment of the inclination angle of the support plate 7, enabling support for pit sidewalls of varying widths. This avoids the inefficiency and cost associated with traditional deep pit support structures where the steel support length is not adjustable, necessitating the fabrication of steel supports of different lengths to support sheet piles for pits of varying widths. One end of the slide rail 81 is tightly fixed to one side of the support plate 7, ensuring structural stability. Adjustment holes 82 are provided on the inner wall of the slide rail 81, providing necessary adjustment space for the adjustment bolts 86. Furthermore, both the front and rear ends of the slide rail 81 are equipped with grooves 83. 3 provides a channel for the sliding of slider 84. Slider 84 is designed to slide smoothly on the inner wall of slide groove 83, ensuring smooth movement of slider 84. Each slider 84 has a hinge seat 85 fixed to one side. An adjusting bolt 86 is inserted into the middle of the hinge seat 85. The adjusting bolt 86 can be used to finely adjust the angle. A push rod 87 is rotatably connected to the inner wall of the hinge seat 85. The lower end of the push rod 87 is hinged to a telescopic rod 88. The telescopic rod 88 allows the entire mechanism to be extended and retracted as needed. A circular plate 89 is fixed to one end of the push rod 87. A sleeve 810 is sleeved on the outer wall of the circular plate 89. A double-headed motor 811 is fixed to the middle of the inner wall of the sleeve 810. The head motor 811 is connected to lead screws 812 on both sides. The lead screws 812 enable the mechanism to make precise linear adjustments. The inner wall of the top rod 87 is also provided with a threaded hole 813, which works in conjunction with the lead screw 812 to further enhance the accuracy of the adjustment. The inner wall of the slide rail 81 is connected to the outer wall of the adjustment hole 82, ensuring that the adjustment hole 82 can effectively cooperate with the slide rail 81. The front and rear ends of the slide rail 81 are both embedded with sliding grooves 83. This design is not only aesthetically pleasing but also practical. Finally, the outer wall of the circular plate 89 is slidably connected to one side of the inner wall of the sleeve 810, and their shapes are perfectly matched. This design ensures the smoothness and stability of the mechanism during operation.

[0027] Working principle: First, several support mechanisms 2 are installed at the four outer corners of the base 1. Additionally, electric push rods 3 are equipped on both sides of the base 1. The telescopic ends of these electric push rods 3 are firmly connected to movable plates 4. A rotating groove 5 is provided on one side of the movable plate 4. A rotating block 6 is rotatably connected to the inner wall of the rotating groove 5. A support plate 7 is fixedly installed on the upper end of the rotating block 6. Two support plates 7 are connected to each other on their adjacent sides via an angle adjustment mechanism 8. The support mechanism 2 is composed of nuts 21. The lower end of the nuts 21 is tightly fixed to the upper perimeter of the base 1. A screw 22 is provided in the inner wall of the nuts 21. The lower end is equipped with a support plate 23, and several insert rods 24 are fixedly connected to the lower end of the support plate 23. Guide rods 25 are fixedly connected to the four corners of the upper end of the support plate 23. Limiting blocks 26 are fixedly connected to the upper end of the guide rods 25. A rotating handle 27 is fixedly connected to the upper end of the screw 22. The inner wall of the nut 21 is tightly connected to the outer wall of the screw 22 by threads. The lower end of the screw 22 is rotatably connected to the upper end of the support plate 23. There are four guide rods 25 and four limiting blocks 26. They are all slidably connected to the four corners of the base 1. The lower end of the support mechanism 2 is firmly fixed to the four corners of the upper end of the base 1. One side of the electric push rod 3 is fixedly connected to both sides of the base 1.

[0028] Then, the dual-head motor 811 operates, causing the lead screw 812 to rotate. Since the outer wall of the lead screw 812 is threadedly connected to the threaded hole 813 on the inner wall of the top rod 87, the rotation of the lead screw 812 allows the top rod 87 to move up and down within the sleeve 810. Simultaneously, one end of the top rod 87 rotates within the hinge seat 85. The lower end of the top rod 87, through a hinge, allows the telescopic rod 88 to be angled, thereby adjusting the tilt angle of the support plate 7. This enables the support plate 7 to provide more stable support for the pit sidewall, preventing collapse and improving the support efficiency of the pit support structure. Furthermore, the angle adjustment... Mechanism 8 allows for free adjustment of the inclination angle of the support plate 7, enabling support treatment of pit sidewalls of different widths. This avoids the problem of traditional deep pit support structures where the length of the steel supports is not adjustable, necessitating the fabrication of steel supports of different lengths to support the sheet piles for pits of different widths, thus reducing the efficiency and cost of pit support. One end of the slide rail 81 is tightly fixed to one side of the support plate 7, ensuring structural stability. The inner wall of the slide rail 81 is provided with adjustment holes 82, which provide necessary adjustment space for the adjustment bolts 86. In addition, both the front and rear ends of the slide rail 81 are equipped with grooves 83, which provide channels for the sliding of the slider 84. The slider 84 is designed to be movable. The slider 84 is slidably connected to the inner wall of the slide groove 83, ensuring smooth movement. Each slider 84 has a hinge seat 85 fixed to one side, with an adjusting bolt 86 inserted in the middle. The adjusting bolt 86 can be used for fine angle adjustment. A push rod 87 is rotatably connected to the inner wall of the hinge seat 85, and a telescopic rod 88 is hinged to the lower end of the push rod 87. The telescopic rod 88 allows the entire mechanism to be extended and retracted as needed. A circular plate 89 is fixed to one end of the push rod 87, and a sleeve 810 is fitted onto the outer wall of the circular plate 89. A double-headed motor 811 is fixed to the middle of the inner wall of the sleeve 810, and lead screws 812 are connected to both sides of the double-headed motor 811. The lead screws 812 enable the mechanism to... Precise linear adjustment is achieved by providing a threaded hole 813 on the inner wall of the top rod 87, which works in conjunction with the lead screw 812 to further enhance the accuracy of the adjustment. The inner wall of the slide rail 81 is connected to the outer wall of the adjustment hole 82, ensuring that the adjustment hole 82 can effectively cooperate with the slide rail 81. Both ends of the slide rail 81 are embedded with sliding grooves 83, which is not only aesthetically pleasing but also practical. Finally, the outer wall of the circular plate 89 is slidably connected to one side of the inner wall of the sleeve 810, and their shapes are perfectly matched. This design ensures the smoothness and stability of the mechanism during operation. The above is the working process of the entire device. Any content not described in detail in this specification belongs to the prior art known to those skilled in the art.

[0029] 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 deep foundation pit support structure, comprising a base (1), characterized in that: Support mechanisms (2) are provided at the four outer corners of the base (1). Electric push rods (3) are provided on both sides of the base (1). A movable plate (4) is fixedly connected to the telescopic end of the electric push rod (3). A rotating groove (5) is opened on one side of the movable plate (4). A rotating block (6) is rotatably connected to the inner wall of the rotating groove (5). A support plate (7) is fixedly connected to the upper end of the rotating block (6). An angle adjustment mechanism (8) is fixedly connected to the top of the side of the two support plates (7) that are close to each other. The support mechanism (2) includes a nut (21), the lower end of which is fixedly connected to the upper end of the base (1) around the perimeter. A screw (22) is provided on the inner wall of the nut (21). A support plate (23) is provided at the lower end of the screw (22). A plug rod (24) is fixedly connected to the lower end of the support plate (23). Guide rods (25) are fixedly connected to the four corners of the upper end of the support plate (23). A limit block (26) is fixedly connected to the upper end of the guide rod (25). A rotating handle (27) is fixedly connected to the upper end of the screw (22).

2. The deep foundation pit support structure according to claim 1, characterized in that: The inner wall of the nut (21) is threaded to the outer wall of the screw (22), and the lower end of the screw (22) is rotatably connected to the upper end of the support plate (23).

3. The deep foundation pit support structure according to claim 2, characterized in that: The number of guide rods (25) and limiting blocks (26) is four, and all of them are slidably connected to the four corners of the base (1).

4. The deep foundation pit support structure according to claim 1, characterized in that: The lower end of the support mechanism (2) is fixedly connected to the four corners of the upper end of the base (1), and one side of the electric push rod (3) is fixedly connected to both sides of the base (1).

5. The deep foundation pit support structure according to claim 1, characterized in that: The angle adjustment mechanism (8) includes a slide rail (81), one side of which is fixedly connected to one side of the support plate (7). An adjustment hole (82) is provided on the inner wall of the slide rail (81). Slide grooves (83) are provided at both the front and rear ends of the slide rail (81). A slider (84) is slidably connected to the inner wall of the slide groove (83). A hinge seat (85) is fixedly connected to one side of the slider (84). An adjustment bolt (86) is inserted into the middle of one side of the hinge seat (85). A top rod (87) is rotatably connected to the inner wall of the receiving seat (85). A telescopic rod (88) is hinged to the lower end of the top rod (87). A circular plate (89) is fixed to one end of the top rod (87). A sleeve (810) is sleeved on the outer wall of the circular plate (89). A double-headed motor (811) is fixed to the middle of the inner wall of the sleeve (810). Lead screws (812) are connected to both sides of the double-headed motor (811). A threaded hole (813) is opened on the inner wall of the top rod (87).

6. A deep foundation pit support structure according to claim 5, characterized in that: The inner wall of the slide rail (81) is connected through the outer wall of the adjustment hole (82), and the front and rear ends of the slide rail (81) are both embedded with slide grooves (83).

7. A deep foundation pit support structure according to claim 5, characterized in that: The outer wall of the circular plate (89) is slidably connected to one side of the inner wall of the sleeve (810) and their shapes are compatible.

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