Deep foundation pit grading supporting structure suitable for water-rich stratum

Abstract

The utility model relates to the technical field of supporting structures, and discloses a deep foundation pit grading supporting structure suitable for a water-rich stratum, which comprises a first supporting plate, one side of the first supporting plate is rotatably connected with a second supporting plate through a rotating shaft, and the top end of the first supporting plate is fixedly connected with a connecting block. The top end of the connecting block is rotationally connected with a supporting plate through a rotating shaft, and an extending block is slidably connected into the supporting plate. According to the deep foundation pit grading supporting structure suitable for the water-rich stratum, a worker pushes an adjusting block into an adjusting groove, the adjusting block drives an inserting block to move and drives the inserting block to relieve limiting between the inserting block and an inserting groove, the worker moves a second supporting plate, the angle of the second supporting plate is inclined, the adaptive landform is adjusted, and the working efficiency is improved. And after the suitable position is adjusted, the adjusting block is pulled to drive the inserting block to be inserted into the inserting groove to fix the angle of the second supporting plate, so that supporting is more adaptive to landform characteristics.

Description

Technical Field

[0001] This utility model relates to the field of support structure technology, and in particular to a graded support structure for deep foundation pits suitable for water-rich strata. Background Technology

[0002] In recent years, due to the rapid development of urban subway projects, subway stations and some sections of open excavation have also involved a large number of foundation pit projects. In subway stations where two lines intersect, the foundation pits are as deep as 20-30 meters. Water conservancy and power also have the problem of foundation pit excavation for underground power plants and underground pump rooms. Whether it is a high-rise building or a deep foundation pit project for the subway, since the excavation is carried out in the city, there are usually various structures such as traffic arteries, existing buildings or pipelines around the foundation pit. This involves an important aspect of foundation pit excavation: protecting the safe use of the surrounding structures.

[0003] A Chinese patent discloses a deep foundation pit support structure (authorization announcement number CN214614104U). This patented technology can enhance the support of the support plate for the sidewall of the deep foundation pit and reduce the possibility of the sidewall of the deep foundation pit collapsing due to water accumulation on the side.

[0004] Regarding the above-mentioned and existing related technologies, the inventors believe that the following defects often exist: Traditional support structures are often designed based on relatively simple geological conditions. In cases where the deep foundation pit is more complex, such as in water-rich strata, they cannot meet the information requirements of the support structure. Therefore, in actual construction, these support structures may not be able to effectively cope with complex topographic changes, resulting in the inability to adjust the support angle according to actual needs. Utility Model Content

[0005] The technical problem to be solved by this utility model is that the existing technology has the disadvantage of not being able to adjust the support angle. To address this, we propose a graded support structure for deep foundation pits that is suitable for water-rich strata.

[0006] To achieve the above objectives, this application adopts the following technical solution: a graded support structure for deep foundation pits suitable for water-rich strata, comprising a first support plate, a second support plate rotatably connected to one side of the first support plate via a pivot, a connecting block fixedly connected to the top of the first support plate, a support plate rotatably connected to the top of the connecting block via a pivot, an extension block slidably connected inside the support plate, a fixing block rotatably connected to the top of the extension block via a pivot, one side of the fixing block being fixedly connected to the side of the second support plate near the connecting block, an adjusting box fixedly connected to the bottom of the support plate, adjusting grooves being provided on both sides of the adjusting box, an adjusting block slidably connected inside the adjusting groove, a through groove being provided at the top of the adjusting groove, an insert being fixedly connected to the top of the adjusting block, a straight groove being provided at the bottom of the extension block, and slots being provided on both sides of the straight groove.

[0007] Preferably, a storage spring is fixedly connected to the side of the adjusting block near the inside of the adjusting groove, and the side of the storage spring away from the adjusting block is fixedly connected to the inside of the adjusting groove.

[0008] Preferably, the size of the insert is adapted to the size of the slot, and the surface of the insert is slidably connected to the interior of the slot.

[0009] Preferably, sliding grooves are provided on both sides of the adjustment groove, and sliders are fixedly connected to both sides of the adjustment block, with the surface of the sliders slidably connected to the inside of the sliding groove.

[0010] Preferably, guide grooves are provided on both sides of the inside of the support plate, and guide blocks are fixedly connected to both sides of the extension block, with the surface of the guide block slidingly connected to the inside of the guide groove.

[0011] Preferably, a return spring is fixedly connected to both sides of the bottom of the extension block, and the bottom of the return spring is fixedly connected to the bottom end inside the support plate.

[0012] Preferably, a number of ground nails are fixedly connected to the bottom of the first support plate.

[0013] The technical effects and advantages of this utility model are as follows:

[0014] In this invention, the worker pushes the adjusting block into the adjusting groove, which moves the insert block and releases the limiting position between the insert block and the slot. The worker then moves the second support plate, tilting its angle to suit the terrain. After adjusting to the appropriate position, the worker pulls the adjusting block, which inserts the insert block into the slot to fix the angle of the second support plate, thereby achieving better support for the terrain features. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0016] Figure 2 This is a partial cross-sectional view of the present invention.

[0017] Figure 3 This is a cross-sectional view of the adjustment box of this utility model;

[0018] Figure 4 This is a cross-sectional view of the support plate of this utility model;

[0019] Figure 5 This is a schematic diagram of the internal structure of the adjustment groove of this utility model.

[0020] Legend: 1. First support plate; 2. Second support plate; 3. Connecting block; 4. Support plate; 5. Extension block; 6. Fixing block; 7. Adjustment box; 8. Adjustment groove; 9. Adjustment block; 10. Through groove; 11. Insert block; 12. Ground nail; 13. Straight groove; 14. Slot; 15. Storage spring; 16. Slide groove; 17. Slider; 18. Guide groove; 19. Guide block; 20. Return spring. Detailed Implementation

[0021] The present invention will now be described in further detail with reference to the accompanying drawings and preferred embodiments. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention.

[0022] Reference Figure 1 - Figure 5 As shown, this utility model provides a technical solution: a graded support structure for deep foundation pits in water-rich strata, including a first support plate 1, a second support plate 2 rotatably connected to one side of the first support plate 1 via a pivot, a connecting block 3 fixedly connected to the top of the first support plate 1, a support plate 4 rotatably connected to the top of the connecting block 3 via a pivot, an extension block 5 slidably connected inside the support plate 4, a fixing block 6 rotatably connected to the top of the extension block 5 via a pivot, one side of the fixing block 6 fixedly connected to the side of the second support plate 2 near the connecting block 3, an adjusting box 7 fixedly connected to the bottom end of the support plate 4, adjusting grooves 8 on both sides of the adjusting box 7, and adjusting... The top of the section block 9 and the adjusting groove 8 has a through groove 10. The top of the adjusting block 9 is fixedly connected to the insert block 11. The bottom of the extension block 5 has a straight groove 13. Both sides of the straight groove 13 have slots 14. When the worker pushes the adjusting block 9 into the adjusting groove 8, the adjusting block 9 moves the insert block 11 and releases the limit between the insert block 11 and the slot 14. The worker moves the second support plate 2 so that the angle of the second support plate 2 is tilted and adjusted to adapt to the terrain. After adjusting to the appropriate position, the worker pulls the adjusting block 9, which moves the insert block 11 into the slot 14 to fix the angle of the second support plate 2, thereby achieving support that is more adapted to the terrain features.

[0023] Reference Figure 1 - Figure 5As shown in this embodiment: A storage spring 15 is fixedly connected to the side of the adjusting block 9 near the inside of the adjusting groove 8, and the side of the storage spring 15 away from the adjusting block 9 is fixedly connected to the inside of the adjusting groove 8. When the operator pushes the adjusting block 9 into the adjusting groove 8, the adjusting block 9 compresses the storage spring 15 to store force, and drives the insertion block 11 to release the limit between it and the slot 14. After the operator adjusts the applicable angle, the insertion block 11 is aligned with the slot 14 and the adjusting block 9 is released. Under the action of the rebound force of the storage spring 15, the insertion block 11 is quickly inserted into the slot 14 for fixing.

[0024] Reference Figure 1 - Figure 5 As shown, in this embodiment, the size of the insert 11 is adapted to the size of the slot 14, and the surface of the insert 11 is slidably connected to the inside of the slot 14. By adapting the size of the insert 11 to the size of the slot 14, the smooth movement of the component insert 11 inside the component slot 14 is ensured, thereby improving the overall operating efficiency of the device. In addition, this design also allows the component insert 11 to remain stable when subjected to external forces, reducing wear caused by friction and extending the service life of the equipment.

[0025] Reference Figure 1 - Figure 5 As shown in this embodiment: sliding grooves 16 are provided on both sides of the inner side of the adjusting groove 8, and sliders 17 are fixedly connected to both sides of the adjusting block 9. The surface of the slider 17 is slidably connected to the inside of the sliding groove 16. When the operator moves the adjusting block 9, the adjusting block 9 drives the slider 17 to slide inside the sliding groove 16. Through the above settings, stable support and guidance of the adjusting block 9 are achieved, ensuring the smoothness and accuracy of its movement, so as to reduce wear and maintenance costs during long-term use, and to limit the movement range of the adjusting block 9 to prevent it from exceeding the predetermined working range.

[0026] Reference Figure 1 - Figure 5 As shown in this embodiment: guide grooves 18 are provided on both sides of the support plate 4, and guide blocks 19 are fixedly connected to both sides of the extension block 5. The surface of the guide block 19 is slidably connected to the inside of the guide groove 18. When the operator moves the extension block 5, the extension block 5 drives the guide block 19 to slide inside the guide groove 18. Through the above settings, precise control of the extension block 5 is achieved. In addition, the sliding friction of the guide block 19 is small, which ensures the smooth movement of the extension block 5 and reduces the resistance during operation. The design of the entire mechanism not only ensures the convenience of operation, but also improves the stability and durability of the equipment.

[0027] Reference Figure 1 - Figure 5As shown in this embodiment: both sides of the bottom of the extension block 5 are fixedly connected with a return spring 20. The bottom of the return spring 20 is fixedly connected to the bottom end inside the support plate 4. After the operator releases the limit of the extension block 5, the return spring 20 rebounds quickly and pushes the extension block 5 to move upward, so that the fixed angle of the extension block 5 is adjusted.

[0028] Reference Figure 1 As shown in this embodiment: a number of ground nails 12 are fixedly connected to the bottom of the first support plate 1. By fixing a number of ground nails 12 to the bottom of the first support plate 1, the stability and pull-out resistance of the first support plate 1 under different soil conditions are ensured. In addition, the ground nails 12 are usually made of high-strength steel to withstand greater tensile and compressive forces, ensuring the long-term stability and safety of the support structure.

[0029] Working principle: The operator pushes the adjusting block 9 into the adjusting groove 8. The adjusting block 9 moves the insert block 11, causing it to release its restraint from the slot 14. The operator then moves the second support plate 2, tilting it to suit the terrain. After adjusting to the desired position, the operator pulls the adjusting block 9, causing the insert block 11 to insert into the slot 14 and fix the angle of the second support plate 2. This achieves better support for the terrain features. When the operator pushes the adjusting block 9 into the adjusting groove 8, the adjusting block 9 compresses the storage spring 15, storing energy and causing the insert block 11 to release its restraint. The limiting mechanism between the insert block 11 and slot 14 allows the operator to adjust the angle of the insert block 11, align it with slot 14, and release the adjusting block 9. Under the rebound force of the storage spring 15, the insert block 11 quickly inserts into slot 14 for fixation. The matching size of the insert block 11 to the slot 14 ensures smooth movement of the insert block 11 within the slot 14, thereby improving the overall operating efficiency of the device. Furthermore, this design allows the insert block 11 to remain stable under external forces, reducing wear caused by friction and extending the equipment's lifespan. The operator adjusts the adjusting block 9... During movement, the adjusting block 9 drives the slider 17 to slide inside the slide groove 16. This configuration provides stable support and guidance for the adjusting block 9, ensuring smooth and precise movement, reducing wear and maintenance costs over long-term use, and limiting the range of movement of the adjusting block 9 to prevent it from exceeding the predetermined working range. When the operator moves the extension block 5, the extension block 5 drives the guide block 19 to slide inside the guide groove 18. This configuration achieves precise control of the extension block 5. Furthermore, the guide block 19 has low sliding friction, ensuring smooth movement of the extension block 5. The movement reduces resistance during operation. The design of the entire mechanism ensures both ease of operation and improved stability and durability of the equipment. After the operator releases the limit of the extension block 5, the return spring 20 quickly rebounds and pushes the extension block 5 upward, allowing the fixed angle of the extension block 5 to be adjusted. The setting of several ground nails 12 fixedly connected to the bottom of the first support plate 1 ensures the stability and pull-out resistance of the first support plate 1 under different soil conditions. In addition, the 12 ground nails are usually made of high-strength steel to withstand greater tensile and compressive forces, ensuring the long-term stability and safety of the support structure.

[0030] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A graded support structure for deep foundation pits suitable for water-rich strata, comprising a first support plate (1), characterized in that: A second support plate (2) is rotatably connected to one side of the first support plate (1) via a pivot. A connecting block (3) is fixedly connected to the top of the first support plate (1). A support plate (4) is rotatably connected to the top of the connecting block (3) via a pivot. An extension block (5) is slidably connected inside the support plate (4). A fixing block (6) is rotatably connected to the top of the extension block (5) via a pivot. One side of the fixing block (6) is adjacent to the second support plate (2) near the connecting block (3). The support plate (4) is fixedly connected to the bottom end of the support plate (4). An adjustment box (7) is fixedly connected to the bottom end of the support plate (4). An adjustment groove (8) is provided on both sides of the adjustment box (7). An adjustment block (9) is slidably connected inside the adjustment groove (8). A through groove (10) is provided at the top end of the adjustment groove (8). An insert block (11) is fixedly connected to the top end of the adjustment block (9). A straight groove (13) is provided at the bottom end of the extension block (5). Slots (14) are provided on both sides inside the straight groove (13).

2. The graded support structure for deep foundation pits suitable for water-rich strata according to claim 1, characterized in that: A storage spring (15) is fixedly connected to the side of the adjusting block (9) near the inside of the adjusting groove (8), and the side of the storage spring (15) away from the adjusting block (9) is fixedly connected to the inside of the adjusting groove (8).

3. The graded support structure for deep foundation pits suitable for water-rich strata according to claim 1, characterized in that: The size of the insert (11) is adapted to the size of the slot (14), and the surface of the insert (11) is slidably connected to the interior of the slot (14).

4. A graded support structure for deep foundation pits suitable for water-rich strata according to claim 1, characterized in that: The adjustment groove (8) has sliding grooves (16) on both sides, and the adjustment block (9) has sliders (17) fixedly connected to both sides. The surface of the sliders (17) is slidably connected to the inside of the sliding grooves (16).

5. A graded support structure for deep foundation pits suitable for water-rich strata according to claim 1, characterized in that: The support plate (4) has guide grooves (18) on both sides inside, and guide blocks (19) are fixedly connected to both sides of the extension block (5). The surface of the guide block (19) is slidably connected to the inside of the guide groove (18).

6. A graded support structure for deep foundation pits suitable for water-rich strata according to claim 1, characterized in that: Both sides of the bottom of the extension block (5) are fixedly connected with a return spring (20), and the bottom of the return spring (20) is fixedly connected to the bottom end inside the support plate (4).

7. A graded support structure for deep foundation pits suitable for water-rich strata according to claim 1, characterized in that: The bottom of the first support plate (1) is fixedly connected with several ground nails (12).

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