Deep foundation pit narrow passage support device

Abstract

The present invention belongs to the field of construction technology, and specifically discloses a deep foundation pit narrow passage support device, aiming to solve the problems that when the existing foundation pit support device is applied to the terrain of a deep foundation pit narrow passage, it is difficult to move and cannot be spliced into a corresponding shape according to the terrain of the foundation pit edge. The deep foundation pit narrow passage support device is mainly composed of a first protective fence in an "n" shape and one or more second protective fences in a "∽" shape. The structure of a single first protective fence or second protective fence is simple, the overall area is small, and it is convenient for production and manufacturing. When applied to the terrain of a deep foundation pit narrow passage, it is less restricted by the terrain, easy to move, and is conducive to being spliced into a corresponding shape according to the terrain of the foundation pit edge, reducing the occupied area of the support and having a better support effect.

Description

Technical Field

[0001] The present invention belongs to the technical field of construction, and particularly relates to a deep foundation pit narrow passage support device. Background Art

[0002] Foundation pit support is a measure of temporary retaining, reinforcement, protection and groundwater control for the foundation pit to protect the safety of the underground main structure construction and the surrounding environment of the foundation pit. Most of the existing foundation pit support devices are composed of large plate-shaped or block-shaped guardrails. However, when this type of foundation pit support device is applied to the terrain of a deep foundation pit narrow passage, due to the fact that the overall area of a single guardrail is too large and the installation operation space is small, it is not only difficult to move, but also very inconvenient to splice and disassemble; in addition, because the floor area of a single guardrail is too large, it cannot be spliced into a corresponding shape according to the terrain of the foundation pit edge, resulting in poor support effect. Summary of the Invention

[0003] The present invention provides a deep foundation pit narrow passage support device, aiming to solve the problems that when the existing foundation pit support device is applied to the terrain of a deep foundation pit narrow passage, it is difficult to move and cannot be spliced into a corresponding shape according to the terrain of the foundation pit edge.

[0004] The technical solution adopted by the present invention to solve its technical problems is: a deep foundation pit narrow passage support device, including a first guardrail in an "n" shape and at least one second guardrail in a "∽" shape; the first guardrail has a downward connecting portion, and the second guardrail has a downward connecting portion and an upward connecting portion; first connecting structures are provided on the respective downward connecting portions of the first guardrail and the second guardrail, and a second connecting structure capable of being connected in cooperation with the first connecting structure is provided on the upward connecting portion of the second guardrail.

[0005] Further, both the first guardrail and the second guardrail are made of hollow round tubes.

[0006] Further, the first connecting structure includes a first sleeve ring provided on the downward connecting portion, anti-detachment insertion blocks are provided on the inner wall of the first sleeve ring, and a first connecting member is provided on the outer wall of the first sleeve ring; the second connecting structure includes a second sleeve ring and a second connecting member provided on the upward connecting portion, the second sleeve ring can be embedded in the first sleeve ring, and a slot for the anti-detachment insertion block to pass through is provided on the side wall of the second sleeve ring, the second connecting member is located below the second sleeve ring, a first sleeve ring installation gap is formed between the second connecting member and the second sleeve ring, and a connecting hole for connecting with the first connecting member is provided on the second connecting member.

[0007] Further, the first connecting structure further includes an indicating block for indicating the position of the anti-detachment insertion block, and the indicating block is provided on the upper side of the first sleeve ring.

[0008] Furthermore, an extension block with a connection through-hole is provided on the outer wall of the first sleeve ring, and the connection end of the first connecting member can pass through the connection through-hole and be connected to the corresponding connection hole together.

[0009] Furthermore, an annular groove is formed on the outer wall of the second protective fence, and the second connecting member is a connecting ring rotatably arranged in the annular groove.

[0010] Furthermore, an anti-slip sleeve is sleeved on the second connecting member.

[0011] Furthermore, the anti-slip sleeve is made of rubber.

[0012] Furthermore, a spherical groove is provided at the lower end of the first sleeve ring, and a ball is rotatably arranged in the spherical groove.

[0013] Furthermore, there are at least two spherical grooves, which are evenly distributed at the lower end of the first sleeve ring.

[0014] The beneficial effects of the present invention are as follows: The deep foundation pit narrow passage support device is mainly composed of a first protective fence in an "n" shape and one or more second protective fences in a "∽" shape. The structure of a single first protective fence or second protective fence is simple, the overall area is small, and the production and manufacturing are convenient. When applied to the terrain of a deep foundation pit narrow passage, it is less restricted by the terrain, easy to move, and is conducive to splicing into a corresponding shape according to the terrain of the foundation pit edge, reducing the occupied area of the support and having a better support effect. Description of the Drawings

[0015] Figure 1 is the schematic structural diagram of the implementation of the present invention;

[0016] Figure 2 is Figure 1 the partial enlarged view of A in

[0017] Figure 3 is the three-dimensional structural diagram before the assembly of the first connection structure and the second connection structure;

[0018] The marks in the figure are: first protective fence 1, first sleeve ring 101, anti-disengagement plug 102, spherical groove 103, ball 104, indicating block 105, extension block 106, connection through-hole 107, second protective fence 2, second sleeve ring 201, slot 202, annular groove 203, second connecting member 204, connection hole 205. Detailed Embodiment

[0019] The present invention will be further described below with reference to the drawings.

[0020] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for convenience of description and does not indicate or imply that the device or component referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as a limitation on the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0021] As Figure 1 shown, the deep foundation pit narrow passage support device includes a first guardrail 1 in an "n" shape and at least one second guardrail 2 in a "∽" shape; the first guardrail 1 has a downward connecting portion, and the second guardrail 2 has a downward connecting portion and an upward connecting portion; first connecting structures are provided on the respective downward connecting portions of the first guardrail 1 and the second guardrail 2, and a second connecting structure capable of cooperating and connecting with the first connecting structure is provided on the upward connecting portion of the second guardrail 2.

[0022] The structures of the first guardrail 1 and the second guardrail 2 of the deep foundation pit narrow passage support device are relatively simple. When applied to the terrain of a deep foundation pit narrow passage, generally, an appropriate number of second guardrails 2 are selected according to the terrain of the foundation pit edge. After moving into place, the first guardrail 1 and each second guardrail 2 are spliced together to form a shape adapted to the edge of the foundation pit to be supported for temporary bracing.

[0023] Among them, the first guardrail 1 and the second guardrail 2 can usually be made of a variety of materials, preferably made of hollow round tubes. The first connecting structure and the second connecting structure are mainly used to detachably connect the upward connecting portion and the downward connecting portion. The first connecting structure and the second connecting structure can be various, for example: a hoop structure, a buckle structure, a threaded nut structure, a flange structure, a connecting sleeve structure, a connecting tape, a magnetic connection structure, a coupling, etc.

[0024] Preferably, as Figure 1 and Figure 3 shown, the first connecting structure includes a first collar 101 provided on the downward connecting portion. An anti - detachment plug 102 is provided on the inner wall of the first collar 101, and a first connecting member is provided on the outer wall of the first collar 101; the second connecting structure includes a second collar 201 and a second connecting member 204 provided on the upward connecting portion. The second collar 201 can be embedded in the first collar 101, and a slot 202 for the anti - detachment plug 102 to pass through is provided on the side wall of the second collar 201. The second connecting member 204 is located below the second collar 201. A first collar installation gap is formed between the second connecting member 204 and the second collar 201, and a connection hole 205 for connecting with the first connecting member is provided on the second connecting member 204.

[0025] When splicing, first place the second set of rings 201 under the first set of rings 101, align the anti-disengagement plug 102 with the slot 202 vertically, then embed the second set of rings 201 into the first set of rings 101, make the anti-disengagement plug 102 pass through the slot 202 and place the first set of rings 101 in the installation gap of the first set of rings; then, rotate the second guardrail 2 to an angle consistent with the terrain of the foundation pit edge, and then connect the first connecting piece to the connection hole 205 on the second connecting piece 204 to complete the connection and fixation; then connect and fix the next second guardrail 2 in the same way, and so on, splicing into a deep foundation pit narrow passage support device adapted to the terrain of the foundation pit edge. When it needs to be disassembled after use, disconnect the first connecting piece from the connection hole 205, then rotate the second guardrail 2 to the position where the anti-disengagement plug 102 is vertically aligned with the slot 202, and then move the second guardrail 2 downward to complete the separation.

[0026] The first connection structure and the second connection structure in the above form are simple in structure, convenient to adjust, and firm in connection. When applied to the terrain of the deep foundation pit narrow passage, the connection is less restricted by the installation operation space, which is convenient for the staff to splice or disassemble the first guardrail 1 and the second guardrail 2 and between the second guardrails 2.

[0027] To facilitate the staff to insert the anti-disengagement plug 102 into the slot 202, again as Figure 1 shown, the first connection structure further includes an indicating block 105 for indicating the position of the anti-disengagement plug 102, and the indicating block 105 is arranged on the upper side of the first set of rings 101. The indicating block 105 can have various structures, such as: arrow structure, triangular structure, etc.; when setting, it is generally arranged on the outer wall of the first guardrail 1 or the second guardrail 2 and directly above the anti-disengagement plug 102.

[0028] Specifically, again as Figure 3 shown, an extension block 106 with a connection through-hole 107 is provided on the outer wall of the first set of rings 101, and the connection end of the first connecting piece can pass through the connection through-hole 107 and be connected to the corresponding connection hole 205 together.

[0029] On the above basis, in order to facilitate adjusting the second connecting piece 204 to the position where the connection hole 205 is directly opposite to the connection through-hole 107, a circular groove 203 is usually opened on the outer wall of the second guardrail 2, and the second connecting piece 204 is a connecting ring rotatably arranged in the circular groove 203.

[0030] In order to increase the friction force to facilitate the staff to rotate the second connecting piece 204, an anti-slip sleeve is generally sleeved on the second connecting piece 204; anti-slip lines are engraved on the outer peripheral wall surface of the anti-slip sleeve. The anti-slip sleeve is generally made of an elastic material, preferably made of rubber.

[0031] To reduce the frictional force between the second connecting member 204 and the first collar 101 and further facilitate the rotation of the second connecting member 204 by the staff, as Figure 2 shown, a spherical groove 103 is provided at the lower end of the first collar 101, and a ball 104 is rotatably arranged in the spherical groove 103.

[0032] Preferably, there are at least two spherical grooves 103, which are evenly distributed at the lower end of the first collar 101.

Claims

1. Deep foundation pit narrow path support device, Characterized in that: It includes a first protective fence (1) in an "n" shape and at least one second protective fence (2) in a "∽" shape; the first protective fence (1) has a downward connecting part, and the second protective fence (2) has a downward connecting part and an upward connecting part; on the downward connecting parts of the first protective fence (1) and the second protective fence (2) respectively, there are first connecting structures, and on the upward connecting part of the second protective fence (2), there is a second connecting structure capable of being connected in cooperation with the first connecting structure; The first connecting structure includes a first collar (101) arranged on the downward connecting part, an anti - detachment plug (102) is arranged on the inner wall of the first collar (101), and a first connecting piece is arranged on the outer wall of the first collar (101); the second connecting structure includes a second collar (201) and a second connecting piece (204) arranged on the upward connecting part, the second collar (201) can be embedded into the first collar (101), and a slot (202) for the anti - detachment plug (102) to pass through is arranged on the side wall of the second collar (201), the second connecting piece (204) is located on the lower side of the second collar (201), a first collar installation gap is formed between the second connecting piece (204) and the second collar (201), and a connecting hole (205) for connecting with the first connecting piece is arranged on the second connecting piece (204); The first connecting structure further includes an indicating block (105) for indicating the position of the anti - detachment plug (102), and the indicating block (105) is arranged on the upper side of the first collar (101); An extension block (106) with a connecting through - hole (107) is arranged on the outer wall of the first collar (101), and the connecting end of the first connecting piece can pass through the connecting through - hole (107) to be connected with the corresponding connecting hole (205).

2. The deep foundation pit narrow path support device according to claim 1, Characterized in that: Both the first protective fence (1) and the second protective fence (2) are made of hollow round tubes.

3. The deep foundation pit narrow path support device according to claim 1, Characterized in that: An annular groove (203) is formed on the outer wall of the second protective fence (2), and the second connecting piece (204) is a connecting ring rotatably arranged in the annular groove (203).

4. The deep foundation pit narrow path support device according to claim 3, Characterized in that: An anti - slip sleeve is sleeved on the second connecting piece (204).

5. The deep foundation pit narrow path support device according to claim 4, Characterized in that: The anti - slip sleeve is made of rubber.

6. The deep foundation pit narrow path support device according to claim 3, Characterized in that: A spherical groove (103) is arranged at the lower end of the first collar (101), and a ball (104) is rotatably arranged in the spherical groove (103).

7. The deep foundation pit narrow path support device according to claim 6, Characterized in that: There are at least two spherical grooves (103), which are evenly distributed at the lower end of the first collar (101).

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