Underground passage foundation pit supporting structure

Abstract

The utility model relates to the technical field of underground passage foundation pit supporting structures, in particular to an underground passage foundation pit supporting structure which comprises a base, a mounting seat fixedly mounted on the front end face of the base, a plurality of baffles movably mounted on the mounting seat, an upper connecting seat fixedly mounted on one side of each baffle, and a supporting plate movably mounted in the base. A plurality of lower connecting bases are fixedly installed on the top of the supporting plate, first threaded rods are movably installed on the upper connecting bases, and second threaded rods are movably installed on the lower connecting bases. The first threaded rods and the second threaded rods are matched with the tighteners, so that each first threaded rod adjusts the position of the corresponding baffle according to the height of soil on the edge of the foundation pit, and it is ensured that each baffle can be tightly attached to the edge of the foundation pit to support and protect the foundation pit; and therefore, the overall supporting stability is improved, and the situation that the soil on the edge of the foundation pit collapses, and construction safety is affected is prevented.

Description

Technical Field

[0001] The utility model relates to a supporting structure for the foundation pit of an underground passage, in particular to a supporting structure for the foundation pit of an underground passage, belonging to the technical field of the supporting structure for the foundation pit of an underground passage. Background Art

[0002] The foundation pit supporting structure refers to the supporting and strengthening measures taken for the side wall of the foundation pit and the surrounding environment during the construction of the underground passage to ensure the safety and smooth progress of the underground structure construction. Its main purpose is to prevent the side wall of the foundation pit from collapsing and sliding, ensure the safety of workers and equipment, and at the same time ensure the quality and progress of the underground passage construction.

[0003] Because the soil at the edge of the foundation pit is uneven, when supporting and protecting the foundation pit, the baffle often cannot fit tightly with the edge of the foundation pit, which will cause gaps between the baffle and the foundation pit. Due to the gaps between the baffle and the foundation pit, the overall stability of the foundation pit supporting structure will be affected, which will cause the soil at the edge of the foundation pit to collapse, thus increasing the risk of foundation pit collapse and posing a serious threat to the safety of the construction site.

[0004] Therefore, it is urgent to improve the supporting structure for the foundation pit of the underground passage to solve the above existing problems. Content of the Utility Model

[0005] The purpose of the utility model is to provide a supporting structure for the foundation pit of an underground passage. The first threaded rod and the second threaded rod cooperate with the tightening device, so that each first threaded rod adjusts the position of each baffle according to the height of the soil at the edge of the foundation pit, ensuring that each baffle can fit tightly with the edge of the foundation pit to support and protect the foundation pit, thereby improving the overall supporting stability and preventing the soil at the edge of the foundation pit from collapsing, which may affect the construction safety.

[0006] To achieve the above purpose, the main technical solutions adopted by the utility model include: a base, an installation seat is fixedly installed on the front end face of the base, several baffles are movably installed on the installation seat, upper connecting seats are fixedly installed on one side of each baffle, a support plate is movably installed inside the base, several lower connecting seats are fixedly installed on the top of the support plate, a first threaded rod is movably installed on the upper connecting seat, a second threaded rod is movably installed on the lower connecting seat, and a tightening device is threadedly engaged between the first threaded rod and the second threaded rod.

[0007] Preferably, one end of each of the first threaded rod and the second threaded rod penetrates into the interior of the tightening device, and a limit ring is fixedly installed at one end of each of the first threaded rod and the second threaded rod located inside the tightening device.

[0008] Preferably, a hydraulic rod is fixedly installed on one side of the inner wall of the base, and one end of the hydraulic rod is fixedly connected to the support plate.

[0009] Preferably, sliders are fixedly installed on both sides of the support plate, and sliding grooves adapted to the sliders are formed in the inner wall of the base.

[0010] Preferably, a plurality of support blocks are fixedly installed on the rear end face of the base. Third threaded rods are threadedly engaged with the support blocks. Ground nails are fixedly installed at the bottoms of the third threaded rods, and a plurality of barbs are fixedly installed on both sides of each ground nail.

[0011] Preferably, a plurality of insertion blocks are fixedly installed on one side of the base, and insertion slots adapted to the insertion blocks are formed on the other side of the base.

[0012] Preferably, a bolt passing through the inside of the insertion slot is threadedly engaged with the base, and threaded holes adapted to the bolt are formed on the surface of the insertion block.

[0013] Preferably, a plurality of mounting holes are formed on one side of the baffle. Rubber clamping blocks are movably installed inside the mounting holes, and springs are fixedly installed between the rubber clamping blocks and the mounting holes.

[0014] The utility model has at least the following beneficial effects: Through the settings of the baffle, upper connecting seat, lower connecting seat, first threaded rod, second threaded rod, baffle, tightening device, mounting seat, and support plate, when each tightening device is rotated, under the action of the thread, the first threaded rod and the second threaded rod can move away from each other inside the tightening device, so that each first threaded rod can drive the baffle to move towards the foundation pit and abut against the edge of the foundation pit. This facilitates adjusting the position of each baffle according to the height of the soil at the edge of the foundation pit, ensuring that each baffle can closely fit the edge of the foundation pit to support and protect the foundation pit, thereby improving the overall stability of the support and avoiding the situation where the soil at the edge of the foundation pit collapses due to the gap formed when the baffle cannot closely fit the edge of the foundation pit, affecting the construction safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings described herein are used to provide a further understanding of the present application, and constitute a part of the present application. The schematic embodiments and descriptions thereof of the present application are used to explain the present application, and do not constitute an improper limitation to the present application. In the drawings:

[0016] Figure 1 is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 is a schematic diagram of the first threaded rod and the second threaded rod of the utility model;

[0018] Figure 3Schematic diagram of the second threaded rod and the support plate of the present utility model;

[0019] Figure 4 Schematic diagram of the half-section structure of the baffle of the present utility model;

[0020] Figure 5 Schematic diagram of the half-section structure of the first threaded rod and the second threaded rod of the present utility model.

[0021] In the figure, 1, base; 2, baffle; 3, upper connecting seat; 4, lower connecting seat; 5, first threaded rod; 6, second threaded rod; 7, tightener; 8, limit ring; 9, slider; 10, chute; 11, support block; 12, third threaded rod; 13, ground nail; 14, barbs; 15, insertion block; 16, insertion slot; 17, bolt; 18, threaded hole; 19, mounting hole; 20, rubber clamping block; 21, spring; 22, mounting seat; 23, hydraulic rod; 24, support plate. Detailed implementation manners

[0022] The following will cooperate with the drawings and embodiments to detail the implementation manners of the present application, so as to fully understand how the present application uses technical means to solve technical problems and achieve the realization process of technical effects and implement accordingly.

[0023] As Figures 1-5 shown, a foundation pit support structure for an underground passage provided in this embodiment includes a base 1. An installation seat 22 is fixedly installed on the front end face of the base 1. A plurality of baffles 2 are movably installed on the installation seat 22. Upper connecting seats 3 are fixedly installed on one side of each baffle 2. A support plate 24 is movably installed inside the base 1. A plurality of lower connecting seats 4 are fixedly installed on the top of the support plate 24. A first threaded rod 5 is movably installed on the upper connecting seat 3. A second threaded rod 6 is movably installed on the lower connecting seat 4. A tightener 7 is threadedly engaged between the first threaded rod 5 and the second threaded rod 6.

[0024] In this embodiment, by rotating each tightener 7, under the action of the thread, the first threaded rod 5 and the second threaded rod 6 can move away from each other inside the tightener 7, so that each first threaded rod 5 can drive the baffle 2 to move towards the foundation pit and abut against the edge of the foundation pit, facilitating the adjustment of the position of each baffle 2 according to the height of the soil at the edge of the foundation pit, ensuring that each baffle 2 can closely fit the edge of the foundation pit to support and protect the foundation pit, thereby improving the overall support stability and avoiding the situation that the soil at the edge of the foundation pit collapses due to the gap generated by the inability of the baffle 2 to closely fit the edge of the foundation pit, affecting the construction safety.

[0025] As Figures 1-3 and Figure 5As shown, one end of the first threaded rod 5 and the second threaded rod 6 both penetrate into the interior of the tightening device 7, and limit rings 8 are fixedly installed at one ends of the first threaded rod 5 and the second threaded rod 6 located inside the tightening device 7.

[0026] In this embodiment, when the tightening device 7 is rotated, the first threaded rod 5 and the second threaded rod 6 can move inside the tightening device 7. Through the arrangement of the limit rings 8, the first threaded rod 5 and the second threaded rod 6 can be limited to prevent the first threaded rod 5 and the second threaded rod 6 from detaching from the tightening device 7 when the tightening device 7 is rotated.

[0027] As Figures 2-4 shown, a hydraulic rod 23 is fixedly installed on one side of the inner wall of the base 1, and one end of the hydraulic rod 23 is fixedly connected to the support plate 24. Sliders 9 are fixedly installed on both sides of the support plate 24, and sliding grooves 10 adapted to the sliders 9 are provided on the inner wall of the base 1.

[0028] In this embodiment, when the hydraulic rod 23 is started, the hydraulic rod 23 pushes the support plate 24, so that each baffle 2 can abut more closely against the edge of the foundation pit, improving the supporting effect of the baffle 2 on the foundation pit.

[0029] As Figures 1-2 shown, a plurality of support blocks 11 are fixedly installed on the rear end face of the base 1, third threaded rods 12 are threadedly engaged on the support blocks 11, ground nails 13 are fixedly installed at the bottoms of the third threaded rods 12, and a plurality of barbs 14 are fixedly installed on both sides of the ground nails 13.

[0030] In this embodiment, by rotating the third threaded rod 12 to continuously move downward, the ground nail 13 is inserted into the ground soil, so that the base 1 can be fixed to prevent the base 1 from shaking and displacing when the baffle 2 supports and protects the foundation pit. When the barbs 14 are inserted into the soil, they can firmly penetrate into the soil mass, effectively preventing the ground nail 13 from loosening in the soil.

[0031] As Figure 1 、 Figure 2 and Figure 4 shown, a plurality of insertion blocks 15 are fixedly installed on one side of the base 1, insertion slots 16 adapted to the insertion blocks 15 are provided on the other side of the base 1, bolts 17 penetrating into the interior of the insertion slots 16 are threadedly engaged on the base 1, and threaded holes 18 adapted to the bolts 17 are provided on the surfaces of the insertion blocks 15.

[0032] In this embodiment, the insertion block 15 on one base 1 can be inserted into the slot 16 on another base 1, so that quick splicing can be completed. During support and protection, quick splicing can be carried out according to the different length requirements of the foundation pit, improving the flexibility of use. The rotating bolt 17 continuously moves downward until the bolt 17 penetrates into the threaded hole 18 to limit and fix the spliced base 1, preventing the situation of mutual separation.

[0033] As Figures 1-4 shown, a number of mounting holes 19 are formed on one side of the baffle 2. Rubber blocks 20 are movably installed inside the mounting holes 19, and springs 21 are fixedly installed between the rubber blocks 20 and the mounting holes 19.

[0034] In this embodiment, when the baffle 2 abuts against the edge of the foundation pit, the rubber block 20 contacts the edge of the foundation pit. Each rubber block 20 can squeeze the spring 21 inward when being squeezed, and the spring 21 is contracted by squeezing, so that each rubber block 20 can adjust its own position according to the height of the edge of the foundation pit, ensuring that each rubber block 20 can abut against the edge of the foundation pit, increasing the friction with the edge of the foundation pit, and thus improving the support and protection effect of the baffle 2.

[0035] As Figures 1-5 shown, the principle of the underground passage foundation pit support structure provided in this embodiment is as follows: By rotating each tightening device 7, under the action of the thread, the first threaded rod 5 and the second threaded rod 6 can move away from each other inside the tightening device 7, so that each first threaded rod 5 can drive the baffle 2 to move towards the foundation pit and abut against the edge of the foundation pit, facilitating the adjustment of the position of each baffle 2 according to the height of the soil at the edge of the foundation pit, ensuring that each baffle 2 can be closely attached to the edge of the foundation pit to support and protect the foundation pit, thereby improving the overall support stability and avoiding the situation that the soil at the edge of the foundation pit collapses due to the gap generated by the inability of the baffle 2 to be closely attached to the edge of the foundation pit, affecting the construction safety.

[0036] As used in the specification and claims, certain terms are used to refer to specific components. Those skilled in the art should understand that hardware manufacturers may use different terms to refer to the same component. The specification and claims do not use the difference in name as a way to distinguish components, but use the difference in function of components as the criterion for distinction. As mentioned throughout the specification and claims, "comprising" is an open-ended term and should be interpreted as "including but not limited to". "Substantially" means within an acceptable error range. Those skilled in the art can solve technical problems within a certain error range and basically achieve the technical effect.

[0037] It should be noted that the term "including", "comprising" or any other variant thereof is intended to cover non-exclusive inclusion, so that a commodity or system including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or elements inherent to such commodity or system. Without further limitation, an element defined by the statement "including one..." does not exclude the existence of additional identical elements in the commodity or system including the element.

[0038] The above description shows and describes several preferred embodiments of the present invention. However, as mentioned above, it should be understood that the present invention is not limited to the forms disclosed herein, should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be changed within the scope of the inventive concept described herein through the above teachings or the techniques or knowledge in the relevant field. And any changes and variations made by those skilled in the art without departing from the spirit and scope of the present invention shall fall within the protection scope of the appended claims of the present invention.

Claims

1. An underground passage foundation pit support structure, comprising a base (1), characterized in that: A mounting base (22) is fixedly installed on the front end face of the base (1). A number of baffle plates (2) are movably installed on the mounting base (22). Upper connecting seats (3) are fixedly installed on one side of each baffle plate (2). A support plate (24) is movably installed inside the base (1). A number of lower connecting seats (4) are fixedly installed on the top of the support plate (24). A first threaded rod (5) is movably installed on the upper connecting seat (3). A second threaded rod (6) is movably installed on the lower connecting seat (4). A tightening device (7) is threadedly engaged between the first threaded rod (5) and the second threaded rod (6).

2. The retaining structure for the foundation pit of an underground passage according to claim 1, wherein: One end of each of the first threaded rod (5) and the second threaded rod (6) penetrates into the interior of the tightening device (7). Limiting rings (8) are fixedly installed at one end of the first threaded rod (5) and the second threaded rod (6) located inside the tightening device (7).

3. The retaining structure for the foundation pit of the underground passage according to claim 1, characterized in that: A hydraulic rod (23) is fixedly installed on one side of the inner wall of the base (1). One end of the hydraulic rod (23) is fixedly connected to the support plate (24).

4. A foundation pit support structure for an underground passage according to claim 1, characterized in that: Sliders (9) are fixedly installed on both sides of the support plate (24). Sliding grooves (10) adapted to the sliders (9) are formed on the inner wall of the base (1).

5. The retaining structure for the foundation pit of an underground passage according to claim 1, characterized in that: A number of support blocks (11) are fixedly installed on the rear end face of the base (1). Third threaded rods (12) are threadedly engaged on the support blocks (11). Ground nails (13) are fixedly installed at the bottom of the third threaded rods (12). A number of barbs (14) are fixedly installed on both sides of the ground nails (13).

6. The retaining structure for the foundation pit of the underground passage according to claim 1, wherein: A number of insertion blocks (15) are fixedly installed on one side of the base (1). Insertion slots (16) adapted to the insertion blocks (15) are formed on the other side of the base (1).

7. The retaining structure for the foundation pit of an underground passage according to claim 6, wherein: A bolt (17) that penetrates into the interior of the insertion slot (16) is threadedly engaged on the base (1). Threaded holes (18) adapted to the bolt (17) are formed on the surface of the insertion block (15).

8. A foundation pit support structure for an underground passage according to claim 1, characterized in that: A number of mounting holes (19) are formed on one side of the baffle plate (2). Rubber clamping blocks (20) are movably installed inside the mounting holes (19). Springs (21) are fixedly installed between the rubber clamping blocks (20) and the mounting holes (19).

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