Foundation pit supporting structure

Abstract

The utility model belongs to the technical field of tunnel construction, and particularly relates to a foundation pit supporting structure which comprises a distance adjusting part, connecting frames, mounting frames, supporting parts and expansion parts, the two connecting frames are symmetrically arranged on the distance adjusting part, the two mounting frames are rotationally connected to the distance adjusting part, the five supporting parts are arranged on the mounting frames, and the expansion parts are arranged on the mounting frames. Expansion pieces are symmetrically connected to the supporting piece in a sliding mode. According to the foundation pit supporting structure designed in the scheme, through the matched design, when the foundation pit supporting structure is not used, through the matched design of the distance adjusting piece, the connecting frame, the mounting frame and the supporting piece, adjustment and storage can be conveniently achieved, the overall occupied space is reduced, and the moving convenience of the supporting structure is improved; when the supporting structure in the scheme is unfolded for use, the supporting firmness can be improved, the supporting effect of the tunnel foundation pit is ensured, and the construction safety is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of tunnel construction, in particular to a foundation pit supporting structure. Background Art

[0002] Most urban transportation methods include buses and subways. The construction of subways requires tunnel excavation. After the tunnel is excavated, the inside of the tunnel needs to be supported, which reduces the safety of tunnel construction. The existing foundation pit support structure is relatively large when in use, which is inconvenient to move and use, and the overall support firmness is low, which affects safe construction and use. Utility Model Content

[0003] 1. Technical issues to be resolved

[0004] In view of the deficiencies of the prior art, the utility model provides a foundation pit support structure, which solves the problems of the foundation pit support structure proposed in the above background technology that is inconvenient to store and move and has poor support firmness.

[0005] (II) Technical solution

[0006] In order to achieve the above-mentioned purpose, the utility model specifically adopts the following technical solutions:

[0007] A foundation pit support structure includes a spacing adjustment member, a connecting frame, a mounting frame, a supporting member and an expansion member, wherein two connecting frames are symmetrically arranged on the spacing adjustment member, two mounting frames are rotatably connected to the spacing adjustment member, five supporting members are arranged on the mounting frame, and the expansion member is symmetrically slidably connected to the supporting member.

[0008] Furthermore, the spacing adjustment member is composed of a bidirectional screw rod, a knob, a rotating shaft and a plug-in hole. The two ends of the bidirectional screw rod are fixedly connected with a knob. The bidirectional screw rod is symmetrically threaded with a rotating shaft, and the rotating shaft is symmetrically provided with plug-in holes.

[0009] Furthermore, the connecting frame is composed of a rotating disk and a plug-in column. The rotating disk is rotatably connected to the bidirectional screw rod. The plug-in columns are fixedly connected to both sides of the rotating disk, and the plug-in columns are slidably plugged into the plug-in holes.

[0010] Furthermore, the mounting frame is composed of a central tube, a cylinder column and a nut, the central tube is fixedly connected to five cylinder columns, the inner wall of the cylinder column is fixedly connected to a protrusion, and the cylinder column is rotatably connected to a nut.

[0011] Furthermore, the support member is composed of a screw, a sliding groove, a trapezoidal block, a limiting groove and an embedding groove. The screw is slidably inserted in the column, and a sliding groove is provided on the screw to cooperate with a protrusion fixedly connected to the inner wall of the column. The sliding groove and the protrusion are slidably connected, and the screw is threadedly connected to the nut. A trapezoidal block is fixedly connected to the screw, and the trapezoidal block has a limiting groove and an embedding groove symmetrically provided on it.

[0012] Furthermore, the expansion piece consists of a trapezoidal bar, a plug-in rod and a limit block, the trapezoidal bar is fixedly connected to the plug-in rod, the limit block is fixedly connected to the plug-in rod, the plug-in rod and the limit block are slidably connected in the limit groove, and the trapezoidal bar is adapted to the embedded groove.

[0013] (III) Beneficial effects

[0014] Compared with the prior art, the utility model provides a foundation pit support structure, which has the following beneficial effects:

[0015] The foundation pit support structure designed by the utility model can be easily adjusted and stored when not in use through the coordinated design of the spacing adjustment parts, the connecting frame, the mounting frame and the support parts, thereby reducing the overall floor space and improving the mobility of the support structure. Through the design of the support parts, the support firmness can be improved when the support structure of the scheme is deployed and used, thereby ensuring the support effect of the tunnel foundation pit and ensuring construction safety. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0017] Figure 2 This is a schematic diagram of the overall storage structure of the utility model;

[0018] Figure 3 This is a schematic diagram of the structure of the spacing adjustment member and the connecting frame of the utility model;

[0019] Figure 4 This is a schematic diagram of the structure of the mounting frame of the utility model;

[0020] Figure 5 This is a schematic diagram of the structure of the support member of the utility model;

[0021] Figure 6 It is a schematic diagram of the structure of the expansion piece of the utility model.

[0022] In the figure: 1. spacing adjustment member; 101. bidirectional screw rod; 102. knob; 103. rotating shaft; 104. plug-in hole; 2. connecting frame; 201. rotating disk; 202. plug-in column; 3. mounting frame; 301. center tube; 302. cylinder column; 303. nut; 4. supporting member; 401. screw rod; 402. sliding groove; 403. trapezoidal block; 404. limiting groove; 405. embedding groove; 5. expansion member; 501. trapezoidal bar; 502. plug-in rod; 503. limiting block. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] Example

[0025] like Figure 1-6As shown, a foundation pit support structure proposed in an embodiment of the utility model can improve the overall adjustment and storage convenience. When not in use, the space occupied can be reduced after storage, and the mobility can be improved. When it can be deployed and used in a tunnel, the support firmness can be improved. The structure comprises a spacing adjustment member 1, a connecting frame 2, a mounting frame 3, a support member 4 and an expansion member 5. Two connecting frames 2 are symmetrically arranged on the spacing adjustment member 1. Two mounting frames 3 are rotatably connected to the spacing adjustment member 1. Five support members 4 are arranged on the mounting frame 3. The expansion member 5 is symmetrically slidably connected to the support member 4. When the support structure is used for tunnel installation support, it is suitable for use as a circular tunnel support. By rotating the nut 303, the screw rod 401 is slidably plugged in the cylinder column 302 for adjustment. The sliding groove 402 is slidably connected to the protrusion fixedly connected to the inner wall of the cylinder column 302. The nut 303 is threadedly connected to the screw 401. Therefore, rotating the nut 303 can make the screw 401 in the cylinder column 3 02, and the combined length of the cylinder column 302 and the screw rod 401 is controlled, so that the trapezoidal block 403 contacts the inner wall of the tunnel. In this way, several support members 4 are adjusted. After the adjustment is completed, by rotating the mounting frame 3, the central cylinder 301 rotates on the rotating shaft 103, so that the support members 4 on the two mounting frames 3 are dislocated, and then by rotating the knob 102, the bidirectional screw rod 101 is rotated. Since the rotating shaft 103 is threadedly connected to the bidirectional screw rod 101, The bidirectional screw rod 101 is rotatably connected to the rotating disk 201, and the plug-in columns 202 on both sides of the rotating disk 201 are slidably plugged into the plug-in holes 104 opened on the rotating shaft 103. Therefore, when the bidirectional screw rod 101 rotates, the rotating shaft 103 will not rotate by itself, so that the rotating shaft 103 can slide and adjust on the bidirectional screw rod 101. By controlling the two rotating shafts 103 to fit together, a plurality of trapezoidal blocks 403 will be plugged in a straight line. At this time, the support structure is fully unfolded, and the unfolding effect is as follows: Figure 1 As shown, at this time, it can be used for support in a circular tunnel. The trapezoidal block 403 is a trapezoidal design. Several trapezoidal blocks 403 arranged in a trapezoidal shape are fitted together to improve the overall support firmness. The principle is the same as the principle of the existing arch bridge, and no further elaboration is given here. After the structure is unfolded, the expansion pieces 5 slidably inserted on both sides of the trapezoidal block 403 can be pulled and unfolded, so that the combined area of ​​the trapezoidal block 403 and the expansion piece 5 can be increased, thereby increasing the support area of ​​the support structure. When the device is not in use, the storage and adjustment are performed in the reverse step of the unfolding step to realize the storage and use of the device, reduce the space occupied, and facilitate the overall mobile transportation. The contents not described in detail in this description belong to the prior art known to professional and technical personnel in this field.

[0026] like Figure 3As shown, in some embodiments, the spacing adjustment member 1 is composed of a bidirectional screw rod 101, a knob 102, a rotating shaft 103 and a plug-in hole 104. The two ends of the bidirectional screw rod 101 are fixedly connected with the knob 102. The bidirectional screw rod 101 is symmetrically threaded with the rotating shaft 103. The rotating shaft 103 is symmetrically provided with plug-in holes 104. The design of the spacing adjustment member 1 meets the use requirements and ensures that the distance between the two mounting frames 3 can be adjusted to meet the storage use of the support structure.

[0027] like Figure 3 As shown, in some embodiments, the connecting frame 2 is composed of a rotating disk 201 and a plug-in column 202. The rotating disk 201 is rotatably connected to the bidirectional screw rod 101. The plug-in columns 202 are fixedly connected on both sides of the rotating disk 201. The plug-in columns 202 are slidably plugged into the plug-in holes 104. When the spacing adjustment member 1 is rotated for adjustment, the connecting frame 2 can prevent the rotating shaft 103 from rotating, thereby meeting the adjustment requirements.

[0028] like Figure 4 As shown, in some embodiments, the mounting frame 3 is composed of a central tube 301, a column 302 and a nut 303. Five columns 302 are fixedly connected to the central tube 301. A protrusion is fixedly connected to the inner wall of the column 302. The nut 303 is rotatably connected to the column 302. The mounting frame 3 meets the connection use of the support member 4 to ensure the use effect.

[0029] like Figure 5 As shown, in some embodiments, the support member 4 is composed of a screw 401, a sliding groove 402, a trapezoidal block 403, a limiting groove 404 and an embedding groove 405. The screw 401 is slidably inserted in the column 302, and a sliding groove 402 is provided on the screw 401 to cooperate with a protrusion fixedly connected to the inner wall of the column 302. The sliding groove 402 is slidably connected to the protrusion, and the screw 401 is threadedly connected to the nut 303. A trapezoidal block 403 is fixedly connected to the screw 401, and a limiting groove 404 and an embedding groove 405 are symmetrically provided on the trapezoidal block 403. The design of the support member 4 meets the use requirements and improves the supporting effect of the support structure in the circular tunnel.

[0030] like Figure 6 As shown, in some embodiments, the expansion piece 5 is composed of a trapezoidal bar 501, a plug-in rod 502 and a limit block 503. The plug-in rod 502 is fixedly connected to the trapezoidal bar 501, and the limit block 503 is fixedly connected to the plug-in rod 502. The plug-in rod 502 and the limit block 503 are slidably connected in the limit groove 404. The trapezoidal bar 501 is adapted to the embedded groove 405. The expansion piece 5 can cooperate with the trapezoidal block 403 to increase the supporting area of ​​the supporting structure and improve the use effect.

[0031] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A foundation pit support structure, characterized in that: The invention comprises a spacing adjustment member (1), a connecting frame (2), a mounting frame (3), a supporting member (4) and an expansion member (5), wherein two connecting frames (2) are symmetrically arranged on the spacing adjustment member (1), two mounting frames (3) are rotatably connected to the spacing adjustment member (1), five supporting members (4) are arranged on the mounting frame (3), and the expansion member (5) is symmetrically slidably connected to the supporting member (4).

2. A foundation pit support structure according to claim 1, characterized in that: The spacing adjustment member (1) is composed of a bidirectional screw rod (101), a knob (102), a rotating shaft (103) and a plug hole (104); both ends of the bidirectional screw rod (101) are fixedly connected to the knob (102); the bidirectional screw rod (101) is symmetrically threaded with the rotating shaft (103); and the rotating shaft (103) is symmetrically provided with the plug hole (104).

3. A foundation pit support structure according to claim 1, characterized in that: The connecting frame (2) is composed of a rotating disk (201) and a plug-in column (202); the rotating disk (201) is rotatably connected to the bidirectional screw rod (101); the plug-in columns (202) are fixedly connected to both sides of the rotating disk (201); and the plug-in columns (202) are slidably plugged into the plug-in holes (104).

4. A foundation pit support structure according to claim 1, characterized in that: The mounting frame (3) is composed of a central tube (301), a tube column (302) and a nut (303); five tube columns (302) are fixedly connected to the central tube (301); a protrusion is fixedly connected to the inner wall of the tube column (302); and a nut (303) is rotatably connected to the tube column (302).

5. The foundation pit support structure according to claim 1, characterized in that: The support member (4) is composed of a screw (401), a sliding groove (402), a trapezoidal block (403), a limiting groove (404) and an embedding groove (405); the screw (401) is slidably inserted in the cylinder (302); a protrusion on the screw (401) that is fixedly connected to the inner wall of the cylinder (302) is provided with a sliding groove (402); the sliding groove (402) and the protrusion are slidably connected; the screw (401) and the nut (303) are threadedly connected; the screw (401) is fixedly connected with a trapezoidal block (403); and the trapezoidal block (403) is symmetrically provided with a limiting groove (404) and an embedding groove (405).

6. A foundation pit support structure according to claim 1, characterized in that: The expansion piece (5) is composed of a trapezoidal bar (501), a plug-in rod (502) and a limit block (503); the trapezoidal bar (501) is fixedly connected to the plug-in rod (502); the limit block (503) is fixedly connected to the plug-in rod (502); the plug-in rod (502) and the limit block (503) are slidably connected in the limit groove (404); and the trapezoidal bar (501) is adapted to the embedding groove (405).

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