A building engineering foundation pit support steel form

Abstract

The utility model relates to the technical field of foundation pit support, disclose a kind of building engineering foundation pit support steel form, comprising: support base table;Multiple oblique sliding grooves are opened on the upper surface of support base table, and multiple straight section sliding grooves;Through the oblique sliding groove and straight section sliding groove of being set on the surface of support base table, the sliding guide of the separate direction sliding of slide bar a and slide bar b is realized, so that multiple vertical guard plates can be expanded in linkage mode in space, and three-dimensional closed support structure is formed. The rotation connection is formed by the hinged connection of the guard plate through the slide bar, and synchronous expansion can be realized during the movement of slide bar b, effectively improving the enclosure efficiency and consistency. The introduction of screw rod - threaded tube structure makes the movement of slide bar b more stable and controllable, avoiding the accumulation of traditional manual propulsion error.

Description

Technical Field

[0001] This utility model relates to the field of foundation pit support technology, specifically to a steel formwork for foundation pit support in building engineering. Background Technology

[0002] In the construction process, excavation of foundation pits is a common preliminary step, especially in the laying of underground pipelines, pile foundation construction, or basement structure construction, where deep foundation pits are often required. To prevent the collapse of foundation pit slopes, lateral displacement of sand and soil, or groundwater seepage, support structures are usually installed on the inner side of the foundation pit to maintain the stability of the pit walls and ensure construction safety.

[0003] Existing methods for foundation pit support mainly include placing steel sections, driving sheet piles, installing retaining walls, or assembling steel formwork. Among these, the use of steel formwork is widely used due to its high reusability, good structural strength, and ease of standardized construction. However, traditional steel formwork support structures are mostly fixed connections, usually assembled by bolts or welded parts. The installation and dismantling process is cumbersome, inconvenient to adjust, and consumes a lot of manpower and time. Utility Model Content

[0004] In view of the shortcomings of the existing technology, this utility model provides a steel formwork for foundation pit support in building engineering, which aims to alleviate the above problems to at least a certain extent.

[0005] The above-mentioned technical objective of this utility model is achieved through the following technical solution: A steel formwork for foundation pit support in construction engineering, comprising: Support base; Multiple inclined grooves and multiple straight grooves are formed on the upper surface of the support base platform; A slide rod a is provided in the inclined slide groove, and a slide rod b is provided in the straight slide groove. A vertical guard plate is rotatably connected between adjacent slide rods a and slide rod b. A support component located between the support base and the slide bar b is used to slide and position the slide bar b to deploy the multiple vertical guard plates.

[0006] Preferably, a lead screw is rotatably connected inside the straight section slide groove, and a threaded tube that is threadedly engaged with the lead screw is fixed at the bottom of the slide rod b.

[0007] Preferably, a notch is provided at the center of the support base, the end of the lead screw extends into the notch and is fixed with gear a, a synchronous table is rotatably connected in the notch, and a gear b that meshes with gear a is fixed at the bottom of the synchronous table.

[0008] Preferably, the synchronization table has a drive hole for accommodating a hex wrench.

[0009] Preferably, the outer wall of the support base is fitted with an extension platform, on which an extension groove a adapted to the straight section slide groove is provided, and an extension groove b adapted to the inclined slide groove is also provided.

[0010] Preferably, the upper surface of the support base is provided with a connection port, and the inner wall of the extension platform is fixed with a connecting plate sleeved with the connection port. The connecting plate is provided with a fixing port that penetrates the connecting plate and the support base.

[0011] In summary, the present invention has the following main advantages: This application provides a steel formwork for foundation pit support in building engineering. Through inclined and straight sliding grooves on the surface of the support base, it enables the directional sliding guidance of sliding rods a and b, allowing multiple vertical protective plates to unfold in a coordinated manner within space, forming a three-dimensional closed support structure. The protective plates are connected by hinged sliding rods, achieving synchronous unfolding during the movement of sliding rod b, effectively improving the efficiency and consistency of the enclosure. The introduction of a screw-threaded tube structure makes the movement of sliding rod b smoother and more controllable, avoiding the accumulation of errors associated with traditional manual advancement. Furthermore, by setting a central synchronous platform and its bottom gear set, multiple screws are driven uniformly, ensuring that all protective plates unfold or retract simultaneously, improving the symmetry and stability of the support structure. In addition, the synchronous platform is equipped with drive holes adapted for hexagonal wrenches, supporting rapid manual operation and meeting the needs of use in complex construction environments without electricity. The overall structure has a high degree of modularity and is easy to operate, suitable for foundation pit construction conditions requiring rapid deployment and high-strength, stable support. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is another schematic diagram of the overall structure of this utility model; Figure 3 This is a cross-sectional schematic diagram of the overall structure of this utility model; Figure 4 yes Figure 3 Enlarged schematic diagram of the local structure at point A; Figure 5 This is a schematic diagram of the support base and extension platform structure of this utility model.

[0013] Figure label: 100. Support base; 101. Inclined slideway; 102. Straight slideway; 103. Slide rod a; 104. Slide rod b; 105. Vertical guard plate; 200. Lead screw; 201. Threaded tube; 202. Notch; 203. Gear a; 204. Synchronizer; 205. Gear b; 206. Drive hole; 300. Extension platform; 301. Extension slot a; 302. Extension slot b; 303. Connection port; 304. Connection plate; 305. Fixing port. Detailed Implementation

[0014] 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.

[0015] refer to Figure 1 - Figure 5 This embodiment provides a steel formwork for foundation pit support in building construction, comprising: A 100mm base support is arranged horizontally and used for the load-bearing and stability support of the overall structure; The upper surface of the support base 100 is provided with inclined sliding grooves 101 and straight sliding grooves 102 in multiple directions. The inclined sliding grooves 101 are arranged obliquely along the base, and the straight sliding grooves 102 are arranged parallel and perpendicularly in specific directions to form a three-dimensional sliding guide path. Sliding rods a103 are respectively provided in the inclined slide groove 101, and sliding rods b104 are provided in the straight slide groove 102. Sliding rods a103 and b104 are slidably installed along their respective slide grooves. Each adjacent slide bar a103 and slide bar b104 is rotatably connected by a vertical guard plate 105, which is a steel plate.

[0016] By controlling the sliding position of the slide bar b104, the connected vertical guard plate 105 can be driven to unfold synchronously in the unfolding direction, thereby forming a continuous support enclosure around the foundation pit. To achieve controllable sliding and position holding of the slide bar b104, a support component is provided between the support base 100 and the slide bar b104. The support component can provide guiding support during the sliding of the slide bar b104, and after sliding to the target position, it can fix the slide bar b104 in position to keep the multiple vertical guard plates 105 in the unfolded state, forming a stable foundation pit retaining structure.

[0017] The steel formwork for foundation pit support in this application adopts a linkage structure that allows for sliding connection and rotational deployment, aiming to solve the problems of complex assembly process, inaccurate positioning, and difficulty in unifying support angles in traditional steel formwork. Through the coordinated operation of the support base 100, the sliding groove system, the sliding rod assembly, and the vertical guard plate 105, it achieves rapid deployment and stable positioning of the support formwork.

[0018] Specifically, before construction, the support platform 100 is horizontally placed at the bottom of the foundation pit. The upper surface of the support platform 100 has multiple inclined grooves 101 and straight grooves 102 pre-set, used to guide the sliding rods a103 and b104, respectively. The inclined grooves 101 are arranged radially or diagonally, while the straight grooves 102 can be arranged horizontally or vertically, forming a three-dimensional, interwoven sliding guide path. This structure ensures that the sliding rods a103 and b104 have a clear direction of movement and constraint within the grooves, thereby improving the overall deployment accuracy and consistency, and effectively avoiding the problems of angle deviation and difficulty in alignment during assembly associated with traditional templates.

[0019] Sliding rods a103 and b104 are respectively installed in corresponding sliding grooves, sliding and relatively independent. They are connected by a vertical guard plate 105 via a rotating hinge. Each vertical guard plate 105 is a steel plate that can change angle as the sliding rod b104 slides. When the construction worker pushes the sliding rod b104 along the straight section of the sliding groove 102, the guard plate will gradually unfold from a folded state to a vertical state because the guard plate maintains a rotating connection with the sliding rod a103. When multiple sliding rods b104 move simultaneously, all guard plates can be unfolded synchronously in a linked manner, ultimately forming a continuous and closed support enclosure around the foundation pit. This unfolding process does not require manual installation of each piece, greatly simplifying the construction process and significantly improving the efficiency and consistency of formwork layout.

[0020] To ensure the stability and reliability of the deployed protective plate structure, a support component is installed between the support base 100 and the sliding rod b104. This component not only provides guiding support during sliding to prevent the sliding rod from deflecting, but also locks the sliding rod after it has moved to the designated position, preventing it from retraction, sliding, or loosening. With the assistance of this support component, precise control and stable maintenance of the protective plate deployment angle can be achieved, thus giving the support structure good lateral pressure resistance and meeting the actual retaining requirements in foundation pit construction.

[0021] Based on the above embodiments, this embodiment further proposes a driving and adjustment structure for realizing the controllable movement of the slide bar b104.

[0022] Specifically, a lead screw 200 is rotatably connected within the straight section slide groove 102. The lead screw 200 is arranged along the length of the straight section slide groove 102 and can be rotatably connected to the support base 100 via a bearing assembly. A threaded tube 201 that is threadedly engaged with the lead screw 200 is fixedly connected to the bottom of the slide rod b104. The threaded tube 201 is arranged along the axial direction of the lead screw 200, so that when the lead screw 200 rotates, the threaded tube 201 can drive the slide rod b104 to move linearly along the straight section slide groove 102 under the action of the thread.

[0023] Through the cooperation structure between the lead screw 200 and the threaded pipe 201, the construction personnel can rotate the lead screw 200 to achieve precise control over the movement position of the slide bar b104, facilitating the adjustment and positioning of the unfolding angle of the vertical guard plate 105. This driving method reduces the force required to manually push the slide bar, improves operational stability, and further ensures the synchronization and consistency of the unfolding of multiple guard plates.

[0024] In this embodiment, a lead screw 200 is installed within the straight section slide groove 102, and a threaded tube 201 meshing with the lead screw 200 is fixedly connected to the bottom of the slide rod b104. This allows the slide rod b104 to move linearly along the straight section slide groove 102 when subjected to the rotation of the lead screw 200. When the construction worker rotates the lead screw 200 using an end crank or power source, the threaded tube 201 undergoes axial displacement under the guidance of the lead screw 200 thread, thereby driving the slide rod b104 to move smoothly along the straight groove. Due to the good self-locking property and power transmission accuracy of the threaded pair, the moving speed and stroke of the slide rod b104 can be controllably adjusted, effectively avoiding the problems of unstable slide rod movement and inaccurate positioning in traditional push-pull operation.

[0025] As the slide bar b104 moves within the straight section slide groove 102, the vertical guard plate 105, which is rotatably connected to the slide bar a103, will unfold synchronously. Due to the continuous and smooth motion characteristics of the lead screw 200 drive, the guard plate can maintain a consistent angle change rhythm during the unfolding process, making the support structure formed by multiple guard plates more neat when it is formed.

[0026] Based on the aforementioned embodiments, in order to achieve unified driving and synchronous deployment among multiple lead screws 200, this embodiment further optimizes the design of the driving structure: Specifically, a recess 202 is provided at the center of the support base 100 to accommodate the central transmission structure. The end of the lead screw 200 extends into the recess 202, and a gear a203 is fixed to its end. A synchronization platform 204 is rotatably connected within the recess 202, and a gear b205 that meshes with gear a203 is fixed to the bottom of the synchronization platform 204. Multiple lead screws 200 can be connected to the synchronization platform 204 via their respective gears a203 and gears b205 located below the synchronization platform 204, achieving unified drive or coordinated control.

[0027] When the construction worker rotates the synchronous table 204, the rotation of the synchronous table 204 drives multiple gears b205 to rotate synchronously, which in turn drives the lead screws 200 connected to the meshing gears a203 to rotate synchronously. Since the lead screw 200 and the threaded pipe 201 are connected by a threaded transmission, the rotation of the lead screw 200 will push the corresponding slide bar b104 to move synchronously in a straight line. Compared with the traditional manual single-rod propulsion method, this solution uses the synchronous table 204 to centrally drive multiple slide bars b104, effectively ensuring the coordination of movement during the unfolding of each vertical guard plate 105, and avoiding problems such as template misalignment, uneven gaps, or angle deviations caused by inconsistent propulsion. Furthermore, as a transmission hub, the synchronous table 204 only requires one power input to drive multiple lead screws 200, greatly simplifying the construction operation steps, reducing manpower consumption, and improving construction efficiency.

[0028] Based on the aforementioned embodiments, to facilitate manual operation of the synchronization table 204 by on-site personnel, this embodiment further optimizes the drive structure: The synchronization table 204 has a drive hole 206, which is an internal hexagonal structure used to fit a standard hex wrench. Construction workers can manually apply torque by inserting a hex wrench into the drive hole 206, thereby driving the synchronization table 204 to rotate around its vertical central axis and achieving synchronous drive of the gear set.

[0029] The drive hole 206 is located in the center of the synchronous table 204 or in an area on the upper surface that is easy to operate. Its size is matched with commonly used hand tools, which not only ensures the convenience of operation, but also enhances the reliability and adaptability under on-site construction conditions.

[0030] Based on the aforementioned embodiments, to further extend the sliding trajectory of the vertical guard plate 105 and improve the enclosure range and layout flexibility of the formwork system, this embodiment provides an extension structure: The outer wall of the support base 100 is fitted with an extension platform 300. The extension platform 300 has a rectangular frame structure and is fixedly connected to the outer edge of the support base 100. Its upper surface extends along the sliding groove direction of the support base 100 to extend the trajectory of the sliding rod structure.

[0031] Specifically, the extension platform 300 is provided with an extension groove a301 that is adapted to the straight section slide groove 102. The extension groove a301 is spatially aligned with the straight section slide groove 102 of the base platform and is continuous with its guide rail outline, so that the slide rod b104 originally provided in the straight section slide groove 102 can continue to slide outward along the extension groove a301. Meanwhile, the extension platform 300 is also provided with an extension groove b302 that is adapted to the inclined slide groove 101. The extension groove b302 is arranged along the inclined trajectory direction and is consistent with the movement path of the inclined slide rod a103, so as to ensure that the slide rod a103 can still obtain reliable guiding support when it is deployed at a large angle.

[0032] The extension platform 300 significantly expands the sliding stroke and unfolding coverage of the protective plate, making the steel formwork system suitable for larger or non-standard sized foundation pit support scenarios.

[0033] To achieve a secure connection between the extension platform 300 and the support base platform 100, and to ensure the continuity of the chute guidance and the overall structural stability, this embodiment further provides a docking structure that is easy to assemble and has a reliable connection: The upper surface of the support base 100 is provided with a connection port 303, which is a recessed structure used to form a fitting space with the extension platform 300. A connecting plate 304 is fixed to the inner wall of the extension platform 300. The size of the connecting plate 304 is adapted to the connection port 303, and it can be inserted into the connection port 303 from above to realize the partial fitting connection between the extension platform 300 and the support base 100.

[0034] To enhance connection stability and prevent the extension platform 300 from shaking, shifting, or detaching during use, a fixing port 305 is provided on the connecting plate 304. The fixing port 305 corresponds to a pre-drilled screw hole on the support base 100, allowing screws to pass through the connecting plate 304 and the base to form a stable and secure connection. This connection method is simple to assemble, provides precise positioning, and improves installation efficiency and resistance to external interference.

[0035] 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 steel formwork for foundation pit support in building construction, characterized in that, include: Support base (100); Multiple inclined grooves (101) and multiple straight grooves (102) are formed on the upper surface of the support base (100). A slide rod a (103) is provided in the inclined slide groove (101), and a slide rod b (104) is provided in the straight slide groove (102). A vertical guard plate (105) is rotatably connected between adjacent slide rods a (103) and slide rod b (104). A support component located between the support base (100) and the slide bar b (104) is used to slide and position the slide bar b (104) to deploy the plurality of vertical guard plates (105).

2. The steel formwork for foundation pit support in building construction according to claim 1, characterized in that, A lead screw (200) is rotatably connected inside the straight section slide groove (102), and a threaded tube (201) that is threadedly engaged with the lead screw (200) is fixed at the bottom of the slide rod b (104).

3. The steel formwork for foundation pit support in building construction according to claim 2, characterized in that, A notch (202) is provided at the center of the support base (100). The end of the lead screw (200) extends into the notch (202) and is fixed with a gear a (203). A timing table (204) is rotatably connected in the notch (202). A gear b (205) that meshes with the gear a (203) is fixed at the bottom of the timing table (204).

4. The steel formwork for foundation pit support in building construction according to claim 3, characterized in that, The synchronization table (204) has a drive hole (206) for fitting a hex wrench.

5. A steel formwork for foundation pit support in building construction according to claim 1, characterized in that, The outer wall of the support base (100) is fitted with an extension platform (300), on which an extension groove a (301) adapted to the straight section slide groove (102) is provided, and an extension groove b (302) adapted to the inclined slide groove (101) is also provided.

6. A steel formwork for foundation pit support in building construction according to claim 5, characterized in that, The upper surface of the support base (100) is provided with a connection port (303), and the inner wall of the extension platform (300) is fixed with a connecting plate (304) sleeved with the connection port (303). The connecting plate (304) is provided with a fixing port (305) that penetrates the connecting plate (304) and the support base (100).

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