Combined supporting structure for foundation pit

Abstract

The utility model relates to the technical field of foundation pit supporting, and discloses a foundation pit combined supporting structure which comprises a bottom plate, a sliding groove is formed in the bottom plate, the bottom plate is slidably connected with two telescopic plates through the sliding groove, and bolts arranged at equal intervals are in threaded connection with the interiors of the telescopic plates. According to the combined supporting structure for the foundation pit, the telescopic plate in sliding connection with the bottom plate is arranged, and the supporting plates which can be transversely moved and adjusted and can be mounted and dismounted are arranged on the two sides of the telescopic plate, so that supporting operation can be conducted on the foundation pit with the large width, and the practicability of the supporting structure is improved; meanwhile, main components of the supporting structure are concentrated on the two sides of the supporting structure, construction work of workers and laying construction of other structures in a foundation pit are prevented from being affected, and the problems that an existing supporting structure needs to be arranged in the middle in the foundation pit during supporting work, construction work of the workers is easily affected, and construction efficiency is high are solved. And meanwhile, a foundation pit with a large width is inconvenient to support, and a certain improvement space exists.

Description

Technical Field

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

[0002] An excavation pit is a pit dug at the foundation design location according to the foundation elevation and foundation plane dimensions. Excavation pit support refers to the support, reinforcement and protection measures taken to ensure the safety of underground structure construction and the surrounding environment of the excavation pit.

[0003] An existing patent (publication number: CN213233476U) discloses a combined support structure for a foundation pit, including a base plate and a foundation pit body. The base plate has an internal mounting groove, and a connecting rod is installed inside the mounting groove. Bolts are installed on the outer surface of the connecting rod, and a support block is provided at the end of the connecting rod. The end of the support block is connected to the foundation pit body. A threaded rod is installed at the upper end of the base plate, and a guide block is provided on the outer surface of the threaded rod. A connecting shaft is provided on the outer surface of the guide block, and the end of the connecting shaft is connected to a telescopic rod. The end of the telescopic rod is connected to a limiting plate, and a limiting block is installed on the outer surface of the limiting plate. The end of the threaded rod is connected to a cover plate. In use, this combined support structure allows the support block to be connected to the interior of the foundation pit body, providing fixed support for the device. When the depth of the foundation pit body reaches the height of two devices, the support block can be placed inside the limiting hole to reinforce the foundation pit body.

[0004] The aforementioned support structure needs to be centrally located within the foundation pit during support operations, which can easily affect workers' work. It is also not convenient for support operations on foundation pits with a large width, indicating room for improvement. Utility Model Content

[0005] To address the shortcomings of existing technologies, this application provides a composite support structure for foundation pits, which facilitates support operations for foundation pits with large widths, improves the practicality of the support structure, and places the main components on both sides of the support structure to avoid affecting workers' construction work. This solves the problem that existing support structures need to be centrally located in the foundation pit during support operations, which can easily affect workers' construction work, and are also inconvenient for support operations in foundation pits with large widths, leaving room for improvement.

[0006] To achieve the above objectives, this application provides the following technical solution: a combined support structure for a foundation pit, comprising a base plate, wherein a sliding groove is provided inside the base plate, and two telescopic plates are slidably connected to the base plate through the sliding groove. Bolts arranged at equal intervals are threaded inside the telescopic plates. Positioning holes arranged at equal intervals are provided inside the base plate, and the bolts are slidably inserted into the positioning holes respectively. A fixing plate is fixedly connected to the upper surface of each telescopic plate. A lead screw is rotatably connected inside the fixing plate, and a threaded tube is threadedly connected to the outer circumference of the lead screw. An mounting plate is fixedly sleeved on the outer circumference of the threaded tube. A support plate is provided on one side of the mounting plate, and equidistantly arranged mounting rods are fixedly connected to the back of the support plate. The outer circumference of the mounting rods is slidably inserted into the mounting plate through a slot provided inside the mounting plate, and a nut is threadedly connected to the outer circumference of each mounting rod.

[0007] The above solution addresses the issue that existing support structures, which require a central location within the pit during support operations, can negatively impact worker work and are not suitable for supporting wider pits. Therefore, improvements are possible. By installing telescopic plates that slide on the base plate and laterally adjustable and removable support plates on both sides of these plates, support operations can be performed on wider pits, improving the practicality of the support structure. Furthermore, this concentrates the main components of the support structure on both sides, preventing disruption to worker work and the installation of other structures within the pit.

[0008] Furthermore, a first reinforcing plate is fixedly connected to the back of the support plate, and a second reinforcing plate is fixedly connected to one side of the fixed plate.

[0009] Through the above scheme, the first reinforcing plate can reinforce the support plate and improve the support strength of the support plate, and the second reinforcing plate can reinforce the fixing plate and improve the support strength of the fixing plate.

[0010] Furthermore, two crossbars are fixedly connected to one side of the fixing plate, and two sleeves are fixedly connected to the back of the support plate, with the inner wall of the sleeves slidingly sleeved with the outer circumferential surface of the crossbars.

[0011] The above scheme allows the crossbar and sleeve to restrict the support plate, ensuring that the support plate always moves laterally, preventing the support plate from rotating with the threaded pipe, and improving the stability of the support plate's movement.

[0012] Furthermore, a reinforcing ring is threaded onto the outer circumferential surface of the crossbar, and the outer surface of the reinforcing ring contacts one side of the sleeve.

[0013] Through the above scheme, the reinforcing ring can support the casing, prevent the casing from shifting back, and thus prevent the support plate from shifting back, further reinforcing the support plate and optimizing the support effect of the support plate.

[0014] Furthermore, the front side of the support plate is fixedly connected with equidistantly arranged reinforcing protrusions, which are integrally formed with the support plate.

[0015] Through the above scheme, the reinforcement protrusion can make the support plate fit tightly against the inner wall of the pit, thereby optimizing the support effect of the support plate. The reinforcement protrusion, which is integrally formed with the support plate, is convenient for production and processing.

[0016] Furthermore, the base plate is internally threaded with equidistant fixed cones, the bottom of which is cone-shaped.

[0017] The above method involves inserting a fixing cone into the inner bottom wall of the pit to fix the bottom plate and improve the overall stability of the support structure.

[0018] Furthermore, limit plates are fixedly connected to both sides of the telescopic plate, and limit grooves are formed on the side walls of the slide. The outer surface of the limit plate is slidably connected to the base plate through the limit grooves.

[0019] The above solution allows the limiting plate to restrict the telescopic plate, preventing it from easily detaching from the slide and improving the stability of the telescopic plate's movement.

[0020] Furthermore, a limiting ring is fixedly sleeved on the outer circumferential surface of each lead screw, and the outer circumferential surface of the limiting ring is rotatably connected to the inside of the fixed plate.

[0021] The above method restricts the lead screw, preventing it from moving laterally and ensuring that the lead screw always rotates.

[0022] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0023] This composite support structure for foundation pits, by incorporating telescopic plates that slide with the base plate and support plates on both sides of the telescopic plates that can move laterally, be installed, and disassembled, enables support operations for foundation pits with large widths. This improves the practicality of the support structure and concentrates the main components of the support structure on both sides, avoiding interference with workers' operations and the laying of other structures within the foundation pit. It solves the problem that existing support structures need to be centrally located within the foundation pit during support operations, which can easily affect workers' operations and is not convenient for supporting foundation pits with large widths, indicating room for improvement. Attached Figure Description

[0024] Figure 1 This is a three-dimensional structural diagram of the entire application;

[0025] Figure 2 This is a structural diagram of the telescopic plate in this application;

[0026] Figure 3 This is a structural diagram of the base plate of this application;

[0027] Figure 4 This is a partial cross-sectional view of the structure of this application.

[0028] In the picture:

[0029] 1. Base plate; 2. Telescopic plate; 3. Bolt; 4. Positioning hole; 5. Fixing plate; 6. Screw rod; 7. Threaded pipe; 8. Mounting plate; 9. Support plate; 10. Mounting rod; 11. Nut; 12. First reinforcing plate; 13. Second reinforcing plate; 14. Crossbar; 15. Sleeve; 16. Reinforcing ring; 17. Reinforcing protrusion; 18. Fixing cone; 19. Limiting plate; 20. Limiting groove; 21. Limiting ring; 22. Slide groove. Detailed Implementation

[0030] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0031] Please see Figure 1 , Figure 3 and Figure 4 This embodiment of a foundation pit combined support structure includes a base plate 1. The base plate 1 has a sliding groove 22 inside. The base plate 1 is slidably connected to two telescopic plates 2 through the sliding groove 22. The telescopic plates 2 are threaded with bolts 3 arranged at equal intervals inside. The base plate 1 has positioning holes 4 arranged at equal intervals inside. The bolts 3 are slidably inserted into the positioning holes 4 respectively. A fixing plate 5 is fixedly connected to the upper surface of each telescopic plate 2. A lead screw 6 is rotatably connected inside the fixing plate 5. A threaded tube 7 is threadedly connected to the outer circumference of the lead screw 6. An installation plate 8 is fixedly sleeved on the outer circumference of the threaded tube 7. A support plate 9 is provided on one side of the installation plate 8. An installation rod 10 arranged at equal intervals is fixedly connected to the back of the support plate 9. The outer circumference of the installation rod 10 is slidably inserted into the installation plate 8 through a slot opened inside the installation plate 8. A nut 11 is threadedly connected to the outer circumference of each installation rod 10.

[0032] Please see Figure 1 , Figure 2 and Figure 4 A first reinforcing plate 12 is fixedly connected to the back of the support plate 9, and a second reinforcing plate 13 is fixedly connected to one side of the fixing plate 5. The first reinforcing plate 12 can reinforce the support plate 9 and improve the support strength of the support plate 9, and the second reinforcing plate 13 can reinforce the fixing plate 5 and improve the support strength of the fixing plate 5.

[0033] Please see Figure 1 , Figure 2 and Figure 4 Two crossbars 14 are fixedly connected to one side of the fixed plate 5, and two sleeves 15 are fixedly connected to the back of the support plate 9. The inner wall of the sleeve 15 is slidably sleeved with the outer circumferential surface of the crossbars 14. The crossbars 14 and the sleeves 15 can restrict the support plate 9, so that the support plate 9 always moves laterally, preventing the support plate 9 from rotating with the threaded pipe 7, and improving the stability of the movement of the support plate 9.

[0034] Please see Figure 1 and Figure 2 The outer circumferential surface of the crossbar 14 is threaded with a reinforcing ring 16. The outer surface of the reinforcing ring 16 contacts one side of the sleeve 15. The reinforcing ring 16 can support the sleeve 15, prevent the sleeve 15 from shifting back, and thus prevent the support plate 9 from shifting back, further reinforcing the support plate 9 and optimizing the support effect of the support plate 9.

[0035] Please see Figure 1 and Figure 2 The front of the support plate 9 is fixedly connected with equidistantly arranged reinforcing protrusions 17. The reinforcing protrusions 17 are integrally formed with the support plate 9. The reinforcing protrusions 17 enable the support plate 9 to be tightly attached to the inner wall of the pit, thereby optimizing the support effect of the support plate 9. The reinforcing protrusions 17 integrally formed with the support plate 9 facilitate production and processing operations.

[0036] Please see Figure 1 and Figure 3 The base plate 1 has internal threads with equidistantly arranged fixing cones 18. The bottom of the fixing cones 18 is pointed. The fixing cones 18 are inserted into the inner bottom wall of the pit to fix the base plate 1 and improve the overall stability of the support structure.

[0037] Please see Figure 1 , Figure 2 and Figure 3 Limiting plates 19 are fixedly connected to both sides of the telescopic plate 2. Limiting grooves 20 are opened on the side wall of the slide groove 22. The outer surface of the limiting plate 19 is slidably connected to the base plate 1 through the limiting groove 20. The limiting plate 19 can restrict the telescopic plate 2, prevent the telescopic plate 2 from easily falling out of the slide groove 22, and improve the stability of the movement of the telescopic plate 2.

[0038] Please see Figure 4 Each lead screw 6 has a limiting ring 21 fixedly sleeved on its outer circumference. The outer circumference of the limiting ring 21 is rotatably connected to the inside of the fixed plate 5 to restrict the lead screw 6, prevent the lead screw 6 from moving laterally, and ensure that the lead screw 6 always rotates.

[0039] This embodiment of a foundation pit combined support structure, by setting a telescopic plate 2 that is slidably connected to the base plate 1, and setting support plates 9 on both sides of the telescopic plate 2 that can be moved laterally, adjusted, installed, and disassembled, can support foundation pits with a large width, improving the practicality of the support structure. At the same time, it makes the main components of the support structure concentrated on both sides of the support structure, avoiding affecting the construction work of workers and the laying of other structures in the foundation pit. It solves the problem that the existing support structure needs to be set in the center of the foundation pit during support work, which can easily affect the construction work of workers, and is also not convenient for supporting foundation pits with a large width, and there is still room for improvement.

[0040] It should be noted that a handwheel is provided on the outer circumference of the lead screw 6, which facilitates the rotation of the lead screw 6 via the handwheel.

[0041] The working principle of the above embodiments is as follows:

[0042] First, place the base plate 1 at the predetermined position in the foundation pit, and secure it firmly by inserting the fixing cone 18 into the inner bottom wall of the foundation pit to ensure the stability of the entire support structure. Next, adjust the position of the telescopic plate 2 in the sliding groove 22 of the base plate 1 according to the width of the foundation pit. Loosen the bolts 3 inside the telescopic plate 2 to prevent it from locking with the positioning hole 4 of the base plate 1. Then slide the telescopic plate 2 to the desired position and tighten the bolts 3 to lock it into the new positioning hole 4, thus completing the position adjustment of the telescopic plate 2. Finally, rotate the lead screw 6 to move the mounting plate 8 through the threaded tube 7. The support plate 9 is moved by the mounting rod 10 and nut 11 until it comes into contact with the side wall of the pit. When the support plate 9 moves, it will cause the sleeve 15 to move on the crossbar 14. After the support plate 9 is in contact with the side wall of the pit, the reinforcing ring 16 is rotated to contact the sleeve 15 and the reinforcing ring 16 is tightened to restrict the sleeve 15 and prevent it from moving back, thereby preventing the support plate 9 from moving back and further optimizing the support effect of the support plate 9. The nut 11 can be unscrewed to remove the positioning restriction on the support plate 9, and then the support plate 9 can be removed. The support plate 9 of different heights can be replaced according to the depth of the pit for support operations.

[0043] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0044] Although embodiments of this application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A composite support structure for a foundation pit, comprising a base plate (1), characterized in that: The base plate (1) has a sliding groove (22) inside, and two telescopic plates (2) are slidably connected to the base plate (1) through the sliding groove (22). The telescopic plates (2) are threaded with bolts (3) arranged at equal intervals inside. The base plate (1) has positioning holes (4) arranged at equal intervals inside, and the bolts (3) are slidably inserted into the positioning holes (4) respectively. A fixing plate (5) is fixedly connected to the upper surface of each telescopic plate (2), and a lead screw (6) is rotatably connected inside the fixing plate (5). The outer circumferential surface of the lead screw (6) is threaded with a threaded tube (7), and the outer circumferential surface of the threaded tube (7) is fixedly sleeved with an mounting plate (8). A support plate (9) is provided on one side of the mounting plate (8), and an equally spaced mounting rod (10) is fixedly connected to the back of the support plate (9). The outer circumferential surface of the mounting rod (10) is slidably inserted into the mounting plate (8) through a slot opened inside the mounting plate (8). A nut (11) is threadedly connected to the outer circumferential surface of each mounting rod (10).

2. The foundation pit composite support structure according to claim 1, characterized in that: The back of the support plate (9) is fixedly connected to a first reinforcing plate (12), and the side of the fixing plate (5) is fixedly connected to a second reinforcing plate (13).

3. The foundation pit composite support structure according to claim 1, characterized in that: Two crossbars (14) are fixedly connected to one side of the fixed plate (5), and two sleeves (15) are fixedly connected to the back of the support plate (9). The inner wall of the sleeve (15) is slidably sleeved with the outer circumferential surface of the crossbar (14).

4. The foundation pit composite support structure according to claim 3, characterized in that: The outer circumferential surface of the crossbar (14) is threaded with a reinforcing ring (16), and the outer surface of the reinforcing ring (16) contacts one side of the sleeve (15).

5. The foundation pit composite support structure according to claim 1, characterized in that: The front of the support plate (9) is fixedly connected with equidistantly arranged reinforcing protrusions (17), which are integrally formed with the support plate (9).

6. The foundation pit composite support structure according to claim 1, characterized in that: The base plate (1) has internal threads connected to equidistant fixed cones (18), the bottom of which is cone-shaped.

7. The foundation pit composite support structure according to claim 1, characterized in that: Both sides of the telescopic plate (2) are fixedly connected to limit plates (19), and the side wall of the slide (22) is provided with a limit groove (20). The outer surface of the limit plate (19) is slidably connected to the base plate (1) through the limit groove (20).

8. The foundation pit composite support structure according to claim 1, characterized in that: Each lead screw (6) is fixedly fitted with a limiting ring (21) on its outer circumference, and the outer circumference of the limiting ring (21) is rotatably connected to the inside of the fixed plate (5).

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