Building foundation pit supporting structure
By designing a combination of fixed rods, movable sleeve plates and support rods, the guide grooves and levers are used to control the lowering and shrinking of the steel cage, the problem of inaccurate positioning and movement of the steel cage in the foundation pit is solved, and the stability and accuracy of the foundation pit support are improved.
Patent Information
- Application Number
- CN202421751852.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-23
- Publication Date
- 2025-07-04
- Estimated Expiration
- 2034-07-23
AI Technical Summary
It is difficult to quickly locate the center of the foundation pit when the steel cage is lowered, which can easily lead to position deviation. The steel cage is easy to move during subsequent grouting, affecting the concrete solidification effect.
A building foundation pit support structure is adopted. Through the combined design of fixed rods, movable sleeve plates, support rods and threaded rods, the precise positioning and stability of the steel cage is achieved. The guide grooves and leverages are used to control the lowering and shrinking of the steel cage to ensure the accurate positioning and support of the steel cage in the foundation pit.
The precise placement and stability of the steel cage is achieved, the quality of foundation pit support is improved, the accuracy of subsequent grouting and maintenance is ensured, and the position deviation of the steel cage under impact is avoided.
Smart Images
Figure CN223061604U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of foundation pit support, in particular to a building foundation pit support structure. Background Technique
[0002] Building foundation pit support refers to the support measures taken to prevent soil collapse during underground construction or civil engineering. Common foundation pit support methods include retaining walls, steel supports, pile walls, slope protection, etc.
[0003] Currently, in foundation pit support, for pile hole foundation pit support, a steel reinforcement cage is usually used in combination with pouring concrete to achieve support. However, when the steel reinforcement cage is lowered into the foundation pit, it is difficult to quickly locate the center of the foundation pit, which is prone to position deviation. Moreover, during subsequent grouting, the steel reinforcement cage is prone to move under impact and is not easy to maintain stability, affecting the solidification effect of the subsequent concrete. Content of the Utility Model
[0004] The purpose of the utility model is to solve the problems existing in the prior art that when the steel reinforcement cage is lowered into the foundation pit, it is difficult to quickly locate the center of the foundation pit, which is prone to position deviation, and during subsequent grouting, the steel reinforcement cage is prone to move under impact and is not easy to maintain stability, affecting the solidification effect of the subsequent concrete, and to propose a building foundation pit support structure.
[0005] To achieve the above purpose, the utility model adopts the following technical scheme: a building foundation pit support structure, including a fixed rod, an activity sleeve plate is movably sleeved on the outer wall of the fixed rod, a fixed sleeve plate is arranged below the activity sleeve plate, the fixed sleeve plate is fixedly sleeved on the outer wall of the fixed rod, a first support rod is rotatably connected to the outer wall of the activity sleeve plate, one end of the first support rod is rotatably connected to a second support rod, one end of the second support rod is rotatably connected to a side support plate, a guide groove is opened at the top end of the side support plate, one end of the bottom surface of the first support rod is rotatably connected to a telescopic rod, the bottom end of the telescopic rod is rotatably connected to the fixed sleeve plate, the top surface of the fixed rod penetrates and is threadedly connected with a threaded rod, the bottom end of the threaded rod is rotatably connected to a pressing plate, and the bottom surface of the pressing plate is fixedly connected to the top surface of the activity sleeve plate.
[0006] Preferably, an activity groove is penetrated and opened on the outer wall of the fixed rod, and the inner wall of the activity groove is movably connected to the outer wall of the pressing plate.
[0007] Preferably, a dial rod is fixedly connected to the top end of the threaded rod.
[0008] Preferably, a backing plate is fixedly connected to the bottom surface of the fixed rod.
[0009] Preferably, four side support plates are provided, and the four side support plates are arranged in a circumferential equidistant array on the outside of the fixed rod.
[0010] Preferably, a reinforcing rib plate is fixedly connected to the inner wall of the side support plate.
[0011] Preferably, one end of the second support rod is rotatably connected to the outer wall of the reinforcing rib plate.
[0012] Compared with the prior art, the advantages and positive effects of the present utility model are as follows:
[0013] 1. In the present utility model, by rotating the threaded rod to control the downward pressure of the movable sleeve plate, and cooperating with the rotation of the first support rod, the telescopic rod and the second support rod, the four side support plates outside the fixed rod are synchronously expanded to fit the inner wall of the foundation pit to achieve central positioning. The guiding groove at the top of the side support plate is used for positioning when lowering the steel reinforcement cage. By cooperating with the lever to control the rotation of the threaded rod, the side support plates are synchronously contracted to automatically lower the steel reinforcement cage, realizing the precise placement of the steel reinforcement cage. Then, by controlling the contraction of the side support plates again to leave a gap for the protection plate and inserting the baffle plate, and cooperating with the present utility model to support the protection plate, it is convenient to ensure the accuracy of the support position during subsequent grouting and maintenance. The steel reinforcement cage is not easily impacted and displaced, improving the support quality.
[0014] 2. In the present utility model, the lever is provided to facilitate the control of the rotation of the threaded rod. Through the connection between the reinforcing rib plate and the second support rod, when the second support rod pushes the side support plate, the edge of the side support plate adaptively rotates and fits after contacting the pit wall, realizing the central positioning of the present utility model in the foundation pit. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 is a three-dimensional structural schematic diagram of a building foundation pit support structure proposed by the present utility model;
[0016] Figure 2 is a building foundation pit support structure proposed by the present utility model Figure 1 The enlarged view of the structure at A in;
[0017] Figure 3 is a partial structural schematic diagram of a building foundation pit support structure proposed by the present utility model;
[0018] Figure 4 is an internal structural schematic diagram of a building foundation pit support structure proposed by the present utility model.
[0019] Legend: 1. Fixed rod; 11. Movable groove; 12. Threaded rod; 121. Pressing plate; 13. Lever; 14. Base plate; 15. Fixed sleeve plate; 16. Movable sleeve plate; 17. First support rod; 18. Telescopic rod; 19. Second support rod; 2. Side support plate; 21. Reinforcing rib plate; 22. Guiding groove. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0020] In order to more clearly understand the above-mentioned objects, features and advantages of the present utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, without conflict, the embodiments of the present application and the features in the embodiments can be combined with each other.
[0021] In the following description, many specific details are set forth in order to fully understand the present utility model. However, the present utility model can also be implemented in other ways different from those described herein. Therefore, the present utility model is not limited by the specific embodiments disclosed in the following specification. Embodiment 1
[0022] As Figures 1-4 shown, the present utility model provides a building foundation pit support structure, which includes a fixed rod 1. An activity sleeve plate 16 is movably sleeved on the outer wall of the fixed rod 1. A fixed sleeve plate 15 is arranged below the activity sleeve plate 16. The fixed sleeve plate 15 is fixedly sleeved on the outer wall of the fixed rod 1. One end of a support rod one 17 is rotatably connected to the outer wall of the activity sleeve plate 16. One end of the support rod one 17 is rotatably connected to a support rod two 19. One end of the support rod two 19 is rotatably connected to a side support plate 2. A guide groove 22 is opened at the top end of the side support plate 2. One end of the support rod one 17 is rotatably connected to the bottom surface of a telescopic rod 18 at the bottom end of the telescopic rod 18. The bottom end of the telescopic rod 18 is rotatably connected to the fixed sleeve plate 15. The top surface of the fixed rod 1 penetrates and is threadedly connected with a threaded rod 12. The bottom end of the threaded rod 12 is rotatably connected to a pressing plate 121. The bottom surface of the pressing plate 121 is fixedly connected to the top surface of the activity sleeve plate 16.
[0023] The following specifically describes the specific settings and functions of this embodiment. By rotating the threaded rod 12 to control the downward pressure of the activity sleeve plate 16, and cooperating with the rotation of the support rod one 17, the telescopic rod 18 and the support rod two 19, the four side support plates 2 outside the fixed rod 1 are synchronously expanded to fit the inner wall of the foundation pit to achieve central positioning. When the steel reinforcement cage is lowered subsequently, the steel reinforcement cage is positioned by using the guide groove 22 at the top of the side support plate 2. Cooperating with the control of the threaded rod 12 to rotate back by the lever 13, the side support plates 2 are synchronously contracted to automatically lower the steel reinforcement cage, realizing the accurate placement of the steel reinforcement cage. The side support plates 2 are controlled to contract again to leave a gap for the guard plate, facilitating the user to insert a baffle inside the steel reinforcement cage and cooperating with the present utility model to support the guard plate, facilitating subsequent grouting and maintenance to ensure the accuracy of the support position, not being easily impacted and displaced, and improving the support quality. Embodiment 2
[0024] As Figures 1-4As shown in the figure, the outer wall of the fixed rod 1 is penetrated with an activity groove 11. The inner wall of the activity groove 11 is movably connected to the outer wall of the pressing plate 121. The top end of the threaded rod 12 is fixedly connected with a dial rod 13. The bottom surface of the fixed rod 1 is fixedly connected with a backing plate 14. There are four side support plates 2. The four side support plates 2 are arranged in a circumferential equidistant array on the outside of the fixed rod 1. The inner wall of the side support plate 2 is fixedly connected with a reinforcing rib plate 21. One end of the second support rod 19 is rotatably connected to the outer wall of the reinforcing rib plate 21.
[0025] The effect achieved by the whole embodiment is that through the setting of the activity groove 11, the lifting control of the pressing plate 121 is guided. Through the setting of the dial rod 13, it is convenient to control the rotation of the threaded rod 12. Through the connection between the reinforcing rib plate 21 and the second support rod 19, when the second support rod 19 pushes the side support plate 2, after the edge of the side support plate 2 contacts the pit wall, it adaptively rotates and fits, realizing the central positioning of the utility model in the foundation pit.
[0026] The usage method and working principle of this device: When in use, the user puts the utility model into the pile hole foundation pit. By rotating the threaded rod 12 through the dial rod 13, the pressing plate 121 presses down on the movable sleeve plate 16. Cooperating with the rotation of the first support rod 17, the telescopic rod 18 and the second support rod 19, the four side support plates 2 outside the fixed rod 1 expand synchronously and fit with the inner wall of the foundation pit, realizing the central positioning of the utility model in the foundation pit. When lowering the steel reinforcement cage subsequently, the positioning of the steel reinforcement cage is realized by using the guiding groove 22 at the top of the side support plate 2. Cooperating with the dial rod 13 to control the threaded rod 12 to rotate back, the side support plates 2 contract synchronously to automatically lower the steel reinforcement cage, realizing the precise placement of the steel reinforcement cage. Control the side support plates 2 to contract again to leave a gap for the guard plate, facilitating the user to insert a baffle inside the steel reinforcement cage and cooperating with the utility model to support the guard plate.
[0027] The above is only a preferred embodiment of the present invention, and it is not a limitation to the present invention in other forms. Any person skilled in the art may use the disclosed technical content to make changes or modifications into equivalent embodiments with equivalent changes and apply them to other fields. However, as long as it does not depart from the technical solution content of the present invention, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present invention still belong to the protection scope of the technical solution of the present invention.
Claims
1. A building foundation pit support structure, including a fixed rod (1), characterized in that: An activity sleeve plate (16) is movably sleeved on the outer wall of the fixed rod (1). A fixed sleeve plate (15) is arranged below the activity sleeve plate (16). The fixed sleeve plate (15) is fixedly sleeved on the outer wall of the fixed rod (1). A first support rod (17) is rotatably connected to the outer wall of the activity sleeve plate (16). One end of the first support rod (17) is rotatably connected to a second support rod (19). One end of the second support rod (19) is rotatably connected to a side support plate (2). A guide groove (22) is formed at the top end of the side support plate (2). An expansion rod (18) is rotatably connected to the bottom surface of one end of the first support rod (17). The bottom end of the expansion rod (18) is rotatably connected to the fixed sleeve plate (15). A threaded rod (12) is threadedly connected through the top surface of the fixed rod (1). A pressing plate (121) is rotatably connected to the bottom end of the threaded rod (12). The bottom surface of the pressing plate (121) is fixedly connected to the top surface of the activity sleeve plate (16).
2. The building foundation pit support structure according to claim 1, wherein: An activity groove (11) is formed through the outer wall of the fixed rod (1). The inner wall of the activity groove (11) is movably connected to the outer wall of the pressing plate (121).
3. A building foundation pit support structure according to claim 1, characterized in that: A dial rod (13) is fixedly connected to the top end of the threaded rod (12).
4. A building foundation pit support structure according to claim 1, characterized in that: A backing plate (14) is fixedly connected to the bottom surface of the fixed rod (1).
5. A building foundation pit support structure according to claim 1, characterized in that: There are four side support plates (2). The four side support plates (2) are arranged in a circumferential equidistant array on the outside of the fixed rod (1).
6. The building foundation pit support structure according to claim 5, characterized in that: Reinforcing rib plates (21) are fixedly connected to the inner wall of the side support plate (2).
7. A building foundation pit support structure according to claim 6, characterized in that: One end of the second support rod (19) is rotatably connected to the outer wall of the reinforcing rib plate (21).