Supporting frame for excavation of foundation pit in subway station

Abstract

The subway station excavation foundation pit supporting frame comprises a supporting column, the outer side of the supporting column is movably sleeved with a first lantern ring, the outer side of the first lantern ring is rotationally connected with a pressing rod through a rotating shaft, the middle of the lower end of the pressing rod is fixedly connected with a connecting rod, and the lower end of the connecting rod is fixedly connected with a connecting plate; a plurality of arc supporting rods are fixedly connected to the lower part of the right end of the connecting plate at equal intervals; the middle of the right end of the supporting plate is rotationally connected with a supporting rod, and the other end of the supporting rod is fixedly connected with a second lantern ring. According to the structure provided by the embodiment of the invention, the fastening screw rod is screwed through a tool, so that the top block extrudes the left side of the lower part of the supporting column, the lower part of the supporting column extrudes the baffle, the supporting column is stably placed, the pressing rod can apply leftward force to the supporting column, and the leftward force is applied to the supporting plate through the supporting rods; and the side wall of the foundation pit is protected, so that the side wall of the foundation pit is protected more stably.

Description

Technical Field

[0001] This application relates to the technical field of foundation pit support, and particularly relates to a support frame for an excavation foundation pit of a subway station. Background Art

[0002] A subway station is a place for passengers to board, transfer, and wait for trains. When constructing and excavating a subway station, there will be large and deep foundation pits that need to be supported. However, for ordinary support mechanisms, the main rods are less stable during erection, resulting in insufficient protection force. Therefore, we have proposed a support frame for an excavation foundation pit of a subway station. Utility Model Content

[0003] This application provides a support frame for an excavation foundation pit of a subway station to solve the above-mentioned problems.

[0004] This application provides a support frame for an excavation foundation pit of a subway station, including:

[0005] Support columns, with a first collar movably sleeved on the outside of the support columns. The outside of the first collar is rotatably connected to a pressure rod through a rotating shaft. The middle of the lower end of the pressure rod is fixedly connected to a connecting rod. The lower end of the connecting rod is fixedly connected to a connecting plate. A plurality of arc-shaped support rods are equidistantly and fixedly connected to the lower right part of the connecting plate;

[0006] Support plates, with a support rod rotatably connected to the middle of the right end of the support plates, and a second collar fixedly connected to the other end of the support rod. The second collar is movably sleeved on the outside of the support columns;

[0007] Bottom plates, with plugging rods equidistantly and fixedly connected to the lower end of the bottom plates. A connecting block is fixedly connected to the middle of the upper end of the bottom plates. A fastening screw rod is inserted into the middle of the connecting block through a thread, and the end of the fastening screw rod is rotatably connected to a top block.

[0008] Preferably, a baffle is movably placed at the opposite direction of the lower part of the outside of the support columns and the top block, and an arc-shaped groove is opened in the middle of the baffle. The support columns are movably inserted into the inside of the arc-shaped groove.

[0009] Preferably, the top block is arc-shaped, and the arc-shaped groove of the top block is sleeved on the outside of the support columns.

[0010] Preferably, a connecting ear plate is fixedly connected to the middle of the right end of the support plates, and the end of the support rod is rotatably connected to the inside of the connecting ear plate through a rotating shaft.

[0011] Preferably, positioning blocks are fixedly connected to the left sides of the upper and lower ends of the support rod, and positioning screw rods are inserted into the middle of the positioning blocks through threads.

[0012] Preferably, a pressing block is fixedly connected to the outer end of the second collar, and the pressing block is provided with plug holes equidistantly and obliquely, and the right end face of the pressing block is an inclined surface.

[0013] The above technical solution provided by the embodiment of the present application has the following advantages compared with the prior art:

[0014] In the structure provided by the embodiment of the present application, the lower end of the support column is pre-buried in the ground, and a baffle is placed on the upper part of the pre-buried part of the support column, and the bottom plate is plugged into the opposite surface of the baffle of the support column, and then the fastening screw is screwed by a tool so that the top block squeezes the lower left side of the support column, so that the lower part of the support column squeezes the baffle, and the placement of the support column is stable;

[0015] Sleeve the second ring on the outside of the support column, and then sleeve multiple second rings in sequence, and then sleeve the first ring at the appropriate position, and then adjust the inclination angle of the pressure rod, and then fill the inside of the pocket with soil, and place it on the upper end of the arc support rod to provide downward gravity, so that the pressure rod can apply a leftward force to the support column, and through each support rod, apply a leftward force to the support plate, thereby protecting the side wall of the foundation pit, and the protection of the side wall of the foundation pit is more stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0017] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0018] Figure 1 The overall structure diagram provided for the embodiment of the present application;

[0019] Figure 2 A diagram showing the connection structure of the support plate and the support rod according to an embodiment of the present application;

[0020] Figure 3 Provided for the embodiments of this application Figure 1 Enlarged view of point A in the middle.

[0021] In the figure: 1, support column; 2, first set of rings; 3, pressure rod; 4, connecting rod; 5, connecting plate; 6, arc support rod; 7, arc groove; 8, support plate; 9, support rod; 10, bottom plate; 11, connecting block; 12, fastening screw; 13, top block; 14, insertion rod; 15, second set of rings; 16, pressing block; 17, pressing block; 18, insertion hole; 19, positioning block; 20, positioning screw; 21, arc support rod. Detailed implementation manners

[0022] To make the objectives, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Apparently, the described embodiments are some but not all of the embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without creative efforts shall fall within the scope of protection of the present application.

[0023] The various embodiments of the present application may exist in the form of a range. It should be understood that the description in the form of a range is only for convenience and brevity and should not be construed as a rigid limitation on the scope of the present application. Therefore, it should be considered that the described range description has specifically disclosed all possible sub-ranges and single values within that range. For example, it should be considered that the range description from 1 to 6 has specifically disclosed sub-ranges such as from 1 to 3, from 1 to 4, from 1 to 5, from 2 to 4, from 2 to 6, from 3 to 6, etc., and single numbers within that range, such as 1, 2, 3, 4, 5, and 6, regardless of the range. Additionally, whenever a numerical range is indicated in the present application, it means including any cited number (fraction or integer) within the indicated range. Unless otherwise specifically stated, the various raw materials, reagents, instruments, and equipment used in the present application can be obtained through market purchases or can be prepared using existing equipment.

[0024] In this application, unless otherwise stated, the orientation terms such as "upper" and "lower" specifically refer to the drawing direction in the attached drawings. Additionally, in this application, terms such as "including" and "comprising" mean "including but not limited to". In this application, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. In this application, "and / or" describes the association relationship of associated objects and indicates that three relationships can exist. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone. Where A and B can be singular or plural. In this application, "at least one" means one or more, and "multiple" means two or more. "At least one kind", "at least one of the following items (pieces)" or similar expressions refer to any combination of these items, including any combination of single items or plural items. For example, "at least one of a, b, or c", or, "at least one of a, b, and c" can both represent: a, b, c, a - b (i.e., a and b), a - c, b - c, or a - b - c, where a, b, and c can be single or multiple respectively.

[0025] Figure 1 It is the overall structure diagram provided by the embodiment of this application;

[0026] Figure 2 It is the connection structure diagram of the support plate and the support rod provided by the embodiment of this application;

[0027] Figure 3 Provided by the embodiment of this application Figure 1 The enlarged view at position A in

[0028] As Figures 1 - 3 shown, the embodiment of this application provides a subway station excavation foundation pit support frame, including:

[0029] Support column 1, the outer side of the support column 1 is movably sleeved with a first collar 2, the outer side of the first collar 2 is rotatably connected to a pressure rod 3 through a rotating shaft, the middle part of the lower end of the pressure rod 3 is fixedly connected with a connecting rod 4, the lower end of the connecting rod 4 is fixedly connected with a connecting plate 5, and a plurality of arc-shaped support rods 21 are fixedly connected at equal intervals to the lower part of the right end of the connecting plate 5;

[0030] Support plate 8, the middle part of the right end of the support plate 8 is rotatably connected to a support rod 9, and a second collar 15 is fixedly connected to the other end of the support rod 9, and the second collar 15 is movably sleeved on the outer side of the support column 1;

[0031] The bottom plate 10, the lower end of the bottom plate 10 is fixedly connected with plugging rods 14 at equal intervals, the middle part of the upper end of the bottom plate 10 is fixedly connected with a connecting block 11, a fastening screw rod 12 is plugged in the middle of the connecting block 11 through threads, and the end of the fastening screw rod 12 is rotatably connected with a top block 13.

[0032] As Figure 1 and Figure 2 shown: A baffle 6 is movably placed at the lower part of the outer side of the support column 1 and at the opposite direction of the top block 13, and an arc groove 7 is opened in the middle of the baffle 6, and the support column 1 is movably plugged in the inside of the arc groove 7.

[0033] Specifically: The area of the baffle 6 is large, so as to increase the force-bearing area. When the top block 13 squeezes the support column 1, a relatively stable supporting force can be provided, and the support column 1 will not be displaced by a large distance when plugged into the ground.

[0034] As Figure 1 shown: The top block 13 is arc-shaped, and the arc-shaped groove of the top block 13 is sleeved on the outer side of the support column 1.

[0035] Specifically: The top block 13 can squeeze the support column 1

[0036] As Figure 3 shown: The middle part of the right end of the support plate 8 is fixedly connected with a connecting ear plate 17, and the end of a support rod 9 is rotatably connected inside the connecting ear plate 17 through a rotating shaft.

[0037] Specifically: When the support rod 9 is not limited by the positioning screw rod 20, it can rotate automatically.

[0038] As Figure 3 shown: Positioning blocks 19 are fixedly connected to the upper and lower left sides of the support rod 9, and a positioning screw rod 20 is plugged in the middle of the positioning blocks 19 through threads.

[0039] Specifically: When the end of the positioning screw rod 20 squeezes the end face of the support plate 8, the support plate 8 and the support rod 9 can be perpendicular to each other.

[0040] As Figure 2 shown: A pressing block 16 is fixedly connected to the outer end of the second collar 15, plugging holes 18 are equidistantly and obliquely opened in the pressing block 16, and the right end face of the pressing block 16 is an inclined plane.

[0041] Specifically: The second collar 15 is sleeved on the outer side of the support column 1. When the support plate 8 is used alone, the pressing block 16 and the plugging holes 18 are positioned on the ground.

[0042] When the device is in use:

[0043] For the protection of a deep foundation pit, the lower end of the support column 1 is pre-buried in the ground, and a baffle 6 is placed on the upper part of the pre-buried part of the support column 1. At the same time, the bottom plate 10 is plugged into the opposite surface of the baffle 6 of the support column 1. Then, the fastening screw 12 is screwed by a tool so that the top block 13 squeezes the lower left side of the support column 1, so that the lower part of the support column 1 squeezes the baffle 6, and the placement of the support column 1 is stable;

[0044] Then, screw the positioning screw 20 so that the end of the positioning screw 20 squeezes the support plate 8 so that the support plate 8 can only be in a vertical state. Then, the second ring 15 is sleeved on the outside of the support column 1. Multiple second rings 15 are sleeved in sequence, and then the first ring 2 is sleeved at the appropriate position. Then, the inclination angle of the pressure rod 3 is adjusted. After that, the inside of the pocket is filled with soil and placed on the upper end of the arc support rod 21 to provide downward gravity, so that the pressure rod 3 can apply a leftward force to the support column 1, and apply a leftward force to the support plate 8 through each support rod 9, thereby protecting the side wall of the foundation pit.

[0045] When the foundation pit is shallow, a single support plate 8 can be used, that is, the positioning screw 20 is turned so that the support plate 8 can change its angle freely, thereby changing the angle of the support rod 9, so that the lower part of the support rod 9 can be supported on the ground, and force is applied to the support plate 8. At the same time, the positioning cylindrical rod is inserted into the socket hole 18 to position the positioning block 16.

[0046] The above is only a specific implementation of the present application, so that those skilled in the art can understand or implement the present application. It will be apparent to those skilled in the art that various modifications to these embodiments are possible, and the general principles defined in the present application can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to these embodiments shown in the present application, but will conform to the widest scope consistent with the principles and novel features applied for by the present application.

Claims

1. A support frame for excavation of a subway station foundation pit, characterized in that: include: A support column (1), wherein the outer side of the support column (1) is movably sleeved with a first sleeve ring (2), the outer side of the first sleeve ring (2) is rotatably connected to a pressure rod (3) via a rotating shaft, a connecting rod (4) is fixedly connected to the middle of the lower end of the pressure rod (3), the lower end of the connecting rod (4) is fixedly connected to a connecting plate (5), and a plurality of arc support rods (21) are fixedly connected to the lower right end of the connecting plate (5) at equal intervals; A support plate (8), wherein the middle portion of the right end of the support plate (8) is rotatably connected to the support rod (9), and a second ring (15) is fixedly connected to the other end of the support rod (9), and the second ring (15) is movably sleeved on the outer side of the support column (1); A base plate (10), the lower end of the base plate (10) is fixedly connected with a plug rod (14) at equal intervals, the middle part of the upper end of the base plate (10) is fixedly connected with a connection block (11), the middle part of the connection block (11) is threadedly plugged with a fastening screw (12), and the end of the fastening screw (12) is rotatably connected to a top block (13).

2. A subway station excavation pit support frame according to claim 1, characterized in that: A baffle (6) is movably placed at the lower outer portion of the support column (1) in the opposite direction of the top block (13), and a circular arc groove (7) is opened in the middle of the baffle (6), and the support column (1) is movably inserted into the inside of the circular arc groove (7).

3. A subway station excavation pit support frame according to claim 1, characterized in that: The top block (13) is in an arc shape, and the arc-shaped groove of the top block (13) is sleeved on the outer side of the support column (1).

4. A subway station excavation pit support frame according to claim 1, characterized in that: A connecting ear plate (17) is fixedly connected to the middle of the right end of the support plate (8), and the interior of the connecting ear plate (17) is rotatably connected to the end of the support rod (9) via a rotating shaft.

5. A subway station excavation pit support frame according to claim 4, characterized in that: The left sides of the upper and lower ends of the support rod (9) are fixedly connected with positioning blocks (19), and the middle part of the positioning block (19) is threadedly inserted with a positioning screw (20).

6. The subway station excavation pit support frame according to claim 1, characterized in that: The outer end of the second sleeve ring (15) is fixedly connected to a pressing block (16), the pressing block (16) is provided with plug holes (18) at equal intervals and inclines, and the right end surface of the pressing block (16) is an inclined surface.

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