A geotechnical engineering foundation pit anti-collapse supporting structure

Abstract

The utility model discloses a kind of geotechnical engineering foundation pit anti-collapse supporting structures, involve geotechnical engineering technical field.The utility model includes support frame, and the two sides of support frame are symmetrically movably connected with foundation pit anti-collapse supporting plate by telescopic link, and the inside of support frame is rotatably connected with double-end screw rod by bearing, and the thread rotation direction of double-end screw rod two ends is opposite.The utility model can drive two moving seats synchronous approach or synchronous away by rotating double-end screw rod, can be cooperated by telescopic link, connecting support, connecting rod and moving seat, drive the foundation pit anti-collapse supporting plate of two sides synchronous approach or synchronous away, to be able to smoothly carry out anti-collapse supporting of different width geotechnical engineering foundation pit, convenient operation, by inserting peg into foundation pit side wall, so that foundation pit anti-collapse supporting plate can be more stably attached on foundation pit side wall, more effectively prevent foundation pit anti-collapse supporting plate sliding, by the cover plate set, the structure in the inside of support frame can be shielded protection.

Description

Technical Field

[0001] This utility model belongs to the field of geotechnical engineering technology, and in particular relates to a geotechnical engineering foundation pit anti-collapse support structure. Background Technology

[0002] In the construction of foundation pits in geotechnical engineering, in order to prevent the foundation pit from collapsing, protective plates are often used to support the inner wall of the foundation pit. In order to improve the stability of the protective plates, a support structure formed by a double-ended screw and a threaded cylinder needs to be installed between parallel protective plates. That is, the double-ended screw is turned so that the two threaded cylinders on the double-ended screw contact the two protective plates respectively. A search revealed that patent application number 202122807854.9 discloses a geotechnical engineering foundation pit anti-collapse support structure, including a bidirectional screw rod. Both ends of the bidirectional screw rod are threadedly connected to threaded cylinders. A handle arranged perpendicular to the bidirectional screw rod is fixedly connected to the middle position of the bidirectional screw rod. A piston is fixedly connected to the end of the threaded cylinder away from the bidirectional screw rod. The piston is slidably installed inside a liquid storage cylinder. A disc body that contacts the foundation pit support plate is fixedly connected to the end of the liquid storage cylinder away from the threaded cylinder. A shut-off valve communicating with the liquid storage cylinder is installed on the outer surface of the end of the liquid storage cylinder near the disc body. A connecting pipe is installed on the other end of the shut-off valve. A collection container storing water is installed on the end of the connecting pipe away from the shut-off valve.

[0003] However, during actual use, the applicant found that when the bidirectional screw is rotated, it will cause the threaded cylinders connected to the threaded ends of the bidirectional screw to rotate synchronously, thus making it impossible to smoothly support the foundation pit against collapse through the protective plates on both sides. In view of this, we propose a geotechnical foundation pit anti-collapse support structure. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0005] This utility model relates to a foundation pit anti-collapse support structure for geotechnical engineering, comprising a support frame. Two foundation pit anti-collapse support plates are symmetrically and movably connected to both sides of the support frame via telescopic rods. A double-ended screw is rotatably connected inside the support frame via bearings. The threads at both ends of the double-ended screw have opposite directions, and movable seats are symmetrically threaded onto both ends of the double-ended screw. The front end of the double-ended screw extends to the outside of the support frame and is fitted with an adjusting disc. The two movable seats are movably connected to the foundation pit anti-collapse support plates on both sides via connecting rods. Pegs are fixedly installed on the outer wall of the foundation pit anti-collapse support plates. Cover plates are bolted to the top and bottom of the support frame.

[0006] Preferably, four nails are arranged side by side at equal intervals on the outer wall of the foundation pit anti-collapse support plate.

[0007] Preferably, connecting supports are symmetrically fixed on the inner sidewall of the foundation pit anti-collapse support plate.

[0008] Preferably, each side has two connecting rods, one end of each connecting rod is movably connected to two connecting supports on the foundation pit anti-collapse support plate, and the other end of each connecting rod is movably connected to one adjacent end of each of the two movable seats.

[0009] Preferably, the side wall of the support frame is provided with an avoidance groove, the connecting rod moves through the avoidance groove, and the top and bottom of the connecting rod are respectively attached to the top and bottom of the avoidance groove.

[0010] Preferably, one end of the telescopic rod is fixedly connected to the foundation pit anti-collapse support plate, and the other end of the telescopic rod is fixedly connected to the support frame.

[0011] This utility model has the following beneficial effects:

[0012] This utility model discloses a collapse-prevention support structure for foundation pits in geotechnical engineering. By rotating a double-headed screw, two movable seats move closer or further apart synchronously. Through the cooperation of the telescopic rod, connecting support, connecting rod, and movable seats, the collapse-prevention support plates on both sides of the foundation pit can move closer or further apart synchronously, thus enabling successful collapse-prevention support for foundation pits of different widths in geotechnical engineering. The operation is convenient. By inserting pins into the sidewall of the foundation pit, the collapse-prevention support plates can be more stably attached to the sidewall of the foundation pit, effectively preventing the collapse-prevention support plates from sliding. The cover plate can shield and protect the internal structure of the support frame. By unscrewing the bolts, the cover plate can be removed from the top and bottom of the support frame, facilitating personnel to maintain the internal structure of the support frame. Attached Figure Description

[0013] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a schematic diagram of the external structure of a foundation pit anti-collapse support structure for geotechnical engineering according to the present invention;

[0015] Figure 2 This is a schematic diagram of the internal structure of a foundation pit anti-collapse support structure for geotechnical engineering according to this utility model;

[0016] Figure 3 This utility model relates to a geotechnical engineering foundation pit anti-collapse support structure. Figure 2 Enlarged view of the structure at point A in the middle.

[0017] The attached diagram lists the components represented by each number as follows:

[0018] 1. Support frame; 11. Clearance channel; 2. Telescopic rod; 3. Pit anti-collapse support plate; 31. Inserted nail; 32. Connecting support; 4. Connecting rod; 5. Bolt; 6. Cover plate; 7. Double-ended screw; 71. Adjusting plate; 8. Moving seat. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0020] Please see Figure 1-3 As shown, this utility model provides a technical solution:

[0021] A foundation pit collapse prevention support structure for geotechnical engineering includes a support frame 1. Both sides of the support frame 1 are symmetrically and movably connected to foundation pit collapse prevention support plates 3 via telescopic rods 2. One end of the telescopic rod 2 is fixedly connected to the foundation pit collapse prevention support plate 3, and the other end is fixedly connected to the support frame 1. A double-ended screw 7 is rotatably connected inside the support frame 1 via bearings. The threads at both ends of the double-ended screw 7 have opposite directions, and movable seats 8 are symmetrically threaded onto both ends of the double-ended screw 7. The helix angle of the double-ended screw 7 is less than the equivalent friction angle, preventing the double-ended screw 7 from loosening. The front end of the double-ended screw 7 extends to the outside of the support frame 1 and is fitted with an adjusting disc 71. The two movable seats 8 are movably connected to the foundation pit collapse prevention support plates 3 on both sides via connecting rods 4. Connecting supports 32 are symmetrically fixed on the inner wall of the foundation pit collapse prevention support plates 3. Two rods 4 are provided. One end of each rod 4 is movably connected to two connecting supports 32 on the foundation pit anti-collapse support plate 3. The other end of each rod 4 is movably connected to the adjacent ends of two movable seats 8. A clearance groove 11 is provided on the side wall of the support frame 1. The rod 4 moves through the clearance groove 11, and the top and bottom of the rod 4 are respectively in contact with the top and bottom of the clearance groove 11, so that the rod 4 can move smoothly. Through the limiting of the rod 4, the movable seat 8 can move along the double-headed screw 7. By rotating the double-headed screw 7, the two movable seats 8 move closer or further away at the same time. Through the cooperation of the telescopic rod 2, connecting supports 32, rod 4 and movable seat 8, the foundation pit anti-collapse support plates 3 on both sides can move closer or further away at the same time, so as to smoothly carry out anti-collapse support for geotechnical engineering foundation pits of different widths, and the operation is convenient.

[0022] The outer wall of the foundation pit anti-collapse support plate 3 is fixedly equipped with nails 31. There are four nails 31 arranged side by side at equal intervals on the outer wall of the foundation pit anti-collapse support plate 3. The top and bottom of the support frame 1 are fixed with cover plates 6 by bolts 5. By inserting the nails 31 into the side wall of the foundation pit, the foundation pit anti-collapse support plate 3 can be more stably attached to the side wall of the foundation pit, and more effectively prevent the foundation pit anti-collapse support plate 3 from sliding. The cover plates 6 can shield and protect the internal structure of the support frame 1. By unscrewing the bolts 5, the cover plates 6 can be removed from the top and bottom of the support frame 1, which can facilitate personnel to maintain the internal structure of the support frame 1.

[0023] Working principle: When using the device, if it is necessary to prevent the collapse of a foundation pit in geotechnical engineering, the device can be moved to the location where the foundation pit needs to be prevented from collapsing. Then, manually rotate the adjusting disc 71 clockwise to drive the double-headed screw 7 to rotate. The rotation of the double-headed screw 7 can drive the two moving seats 8 to move away synchronously. At this time, under the combined action of the telescopic rod 2, the connecting support 32, the connecting rod 4 and the moving seats 8, the foundation pit anti-collapse support plates 3 on both sides can be driven away synchronously, and the foundation pit anti-collapse support plates 3 on both sides can be made to abut against the side walls on both sides of the foundation pit. The pins 31 can be inserted into the side walls of the foundation pit, and the foundation pit can be prevented from collapsing. By rotating the adjusting disc 71 counterclockwise, the foundation pit anti-collapse support plates 3 on both sides can be driven to move closer synchronously, and the support structure can be removed.

[0024] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0025] The above are merely preferred embodiments of the present utility model and do not limit the present utility model. Any modifications to the technical solutions described in the foregoing embodiments or equivalent substitutions of some of the technical features shall fall within the protection scope of the present utility model.

Claims

1. A geotechnical engineering foundation pit anti-collapse support structure, comprising a support frame (1), characterized in that: The two sides of the support frame (1) are symmetrically connected to the foundation pit anti-collapse support plate (3) by telescopic rods (2). The inside of the support frame (1) is rotatably connected to a double-headed screw (7) by bearings. The threads at both ends of the double-headed screw (7) are opposite in direction, and the two ends of the double-headed screw (7) are symmetrically threaded with movable seats (8). The front end of the double-headed screw (7) extends to the outside of the support frame (1) and is fitted with an adjusting plate (71). The two ends of the two movable seats (8) are movably connected to the foundation pit anti-collapse support plate (3) on both sides by connecting rods (4). The outer wall of the foundation pit anti-collapse support plate (3) is fixed with a pin (31). The top and bottom of the support frame (1) are fixed with a cover plate (6) by bolts (5).

2. The geotechnical engineering foundation pit anti-collapse support structure according to claim 1, characterized in that, The anti-collapse support plate (3) of the foundation pit has four nails (31) arranged side by side at equal intervals on the outer wall.

3. The anti-collapse support structure for foundation pits in geotechnical engineering according to claim 1, characterized in that, Connecting supports (32) are symmetrically fixed on the inner side wall of the foundation pit anti-collapse support plate (3).

4. The anti-collapse support structure for foundation pits in geotechnical engineering according to claim 3, characterized in that, Two connecting rods (4) are provided on each side. One end of the two connecting rods (4) is movably connected to the two connecting supports (32) on the foundation pit anti-collapse support plate (3), and the other end of the two connecting rods (4) is movably connected to the adjacent ends of the two movable seats (8).

5. The anti-collapse support structure for foundation pits in geotechnical engineering according to claim 1, characterized in that, The support frame (1) has an avoidance groove (11) on its side wall. The connecting rod (4) moves through the avoidance groove (11) and the top and bottom of the connecting rod (4) are respectively attached to the top and bottom of the avoidance groove (11).

6. The geotechnical engineering foundation pit anti-collapse support structure according to claim 1, characterized in that, One end of the telescopic rod (2) is fixedly connected to the foundation pit anti-collapse support plate (3), and the other end of the telescopic rod (2) is fixedly connected to the support frame (1).

Images