Subway foundation pit supporting structure

Abstract

The utility model provides a subway foundation pit supporting structure, relates to the supporting structure technical field, including L-shaped frame and connecting block, the surface of L-shaped frame is provided with slot A, the inside of slot A is slidingly connected with guard plate, the surface of L-shaped frame is rotatingly connected with connecting rod A, the surface of connecting rod A is fixedly provided with extension rod, the extension rod is connected with the connecting rod A through the connecting rod A, and the connecting rod A is connected with the connecting rod A through the connecting rod A. The surface of the connecting block B is rotationally connected with a connecting rod B. An inserting strip is inserted into the connecting rod B. The surface of the connecting rod B is rotationally connected with a rotating block, and the surface of the connecting block is rotationally connected with a lead screw A. The surface of the connecting block is rotationally connected with a screw rod A. By arranging the L-shaped frame, the protective plate, the connecting block, the connecting rod A, the connecting rod B, an extension rod, a lead screw A, a limiting rod, an inserting strip and a rotating block, the effect of conveniently supporting the foundation pit through the L-shaped frame and the protective plate is achieved, while the foundation pit is supported, the effect of preventing the supporting structure from blocking passing of workers is also avoided, the structure is simple, and practicability is high.

Description

Technical Field

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

[0002] The subway foundation pit support structure is a structural system used to prevent ground collapse and support the surrounding soil during subway construction.

[0003] Announcement No. CN209923939U announces a subway foundation pit support structure, including a subway foundation pit, wherein the inner walls on the left and right sides of the subway foundation pit are respectively provided with a first steel pipe and a third steel pipe, the first steel pipe and the third steel pipe are connected through a second steel pipe, and the inner walls of the first steel pipe and the third steel pipe are both provided with a threaded structure, and the outer wall of the second steel pipe is provided with a threaded structure, the second steel pipe is threadedly connected with the first steel pipe and the third steel pipe, and a turntable is provided on the outer wall of the first steel pipe and the third steel pipe. The subway foundation pit support structure is provided with a first steel pipe, a second steel pipe and a third steel pipe, so that the first steel pipe and the third steel pipe are threadedly connected with the second steel pipe, which not only allows the length between the first steel pipe, the second steel pipe and the third steel pipe to be freely adjusted, but also avoids the cutting of the steel pipe and the welding and fixing of the steel pipe, thereby improving the work efficiency of the construction personnel. Although this type of support structure facilitates the installation of the support structure, it is lacking in facilitating the passage of workers, because this type of support structure requires multiple cross bars to support the foundation pit, and the cross bars not only hinder the passage of workers in the foundation pit, but also restrict the workers from working in the foundation pit. Utility Model Content

[0004] The purpose of the utility model is to solve the technical problems raised in the above background technology.

[0005] The utility model adopts the following technical scheme: a subway foundation pit supporting structure, comprising an L-shaped frame and a connecting block, a slot A is opened on the surface of the L-shaped frame, a guard plate is slidably connected inside the slot A, a connecting rod A is rotatably connected on the surface of the L-shaped frame, an extension rod is fixedly installed on the surface of the connecting rod A, a connecting rod B is rotatably connected on the surface of the connecting block B, an insert strip is inserted inside the connecting rod B, a rotating block is rotatably connected on the surface of the connecting rod B, a screw rod A is rotatably connected on the surface of the connecting block, and a limiting rod is fixedly installed on the surface of the connecting block.

[0006] Preferably, a slot B is provided on the surface of the guard plate, a plug block is inserted into the slot B, a support rod is fixedly installed on the surface of the plug block, a screw rod B is rotatably connected to the inside of the support rod, and a handle is fixedly installed on the surface of the screw rod B. Here, the design of the support rod plays the role of reinforcing and supporting the guard plate.

[0007] Preferably, the limit rod is slidably connected to the L-shaped frame, and the screw rod A is threadedly connected to the L-shaped frame. Here, the sliding design of the limit rod and the L-shaped frame facilitates the fixing of the guard plate in the L-shaped frame, and the threaded connection design of the screw rod A and the L-shaped frame drives the connection block to move when the screw rod A rotates.

[0008] Preferably, the extension rod is slidably connected to the connecting rod B, and the insert is slidably connected to the positioning hole. Here, the sliding design of the extension rod and the connecting rod B has the effect of extending the connecting rod A and the connecting rod B, and the sliding design of the insert and the positioning hole has the effect of facilitating the fixing of the extension rod in the connecting rod B.

[0009] Preferably, the inserting strip is connected to the rotating block by a thread. Here, the threaded connection design between the inserting strip and the rotating block facilitates the fixing and removal of the inserting strip.

[0010] Preferably, the insert block is slidably connected to the slot B, and the screw rod B is threadedly connected to the support rod. Here, the sliding design of the insert block and the slot B facilitates the installation of the support rod, and the threaded connection design of the screw rod B and the support rod facilitates the adjustment according to the width of the guard plate.

[0011] Compared with the prior art, the advantages and positive effects of the utility model are:

[0012] 1. In the utility model, by arranging the L-shaped frame, the guard plate, the connecting block, the connecting rod A, the connecting rod B, the extension rod, the screw rod A, the limit rod, the insert and the rotating block, the effect of supporting the foundation pit by the L-shaped frame and the guard plate is played. While supporting the foundation pit, the effect of the supporting structure blocking the passage of the staff is also avoided, and the structure is simple and practical.

[0013] 2. In the utility model, by providing the screw rod B, the turning handle, the support rod, the plug block and the slot B, it is convenient to reinforce and support the guard plate, and it is also convenient to adjust the length of the support rod according to the width of the guard plate, thereby improving the adaptability of the support rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 A three-dimensional structural schematic diagram of a subway foundation pit support structure is proposed for the utility model;

[0015] Figure 2 The utility model proposes an exploded structural diagram of an L-shaped frame, a connecting rod A, a connecting rod B, an extension rod, an insert, a rotating block and a connecting block in a subway foundation pit support structure;

[0016] Figure 3 The utility model proposes a subway foundation pit support structure Figure 2 Enlarged view of point A in the middle;

[0017] Figure 4 The utility model provides a schematic diagram of the exploded structure of a support rod, a screw rod B and a turning handle in a subway foundation pit support structure.

[0018] Legend:

[0019] 1. L-shaped frame; 2. Guard plate; 3. Connecting block; 4. Slot A; 5. Connecting rod A; 6. Extension rod; 7. Connecting rod B; 8. Insert strip; 9. Turning block; 10. Positioning hole; 11. Screw A; 12. Limit rod; 13. Slot B; 14. Insert block; 15. Support rod; 16. Turning handle; 17. Screw B. DETAILED DESCRIPTION

[0020] In order to more clearly understand the above-mentioned purpose, features and advantages of the utility model, the utility model is further described below in conjunction with the accompanying drawings and embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0021] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the present invention is not limited to the specific embodiments of the following disclosure.

[0022] Embodiment 1

[0023] See also Figure 1-4 The utility model provides a technical solution: a subway foundation pit support structure, including an L-shaped frame 1 and a connecting block 3, a slot A4 is opened on the surface of the L-shaped frame 1, a guard plate 2 is slidably connected inside the slot A4, a connecting rod A5 is rotatably connected on the surface of the L-shaped frame 1, an extension rod 6 is fixedly installed on the surface of the connecting rod A5, a connecting rod B7 is rotatably connected on the surface of the connecting block 3B, the extension rod 6 is slidably connected to the connecting rod B7, the sliding design of the extension rod 6 and the connecting rod B7 has the effect of extending the connecting rod A5 and the connecting rod B7, an insert 8 is inserted inside the connecting rod B7, the insert 8 is slidably connected to the positioning hole 10, and the sliding design of the insert 8 and the positioning hole 10 has the effect of facilitating the fixing of the extension rod 6 in the connecting rod B7.

[0024] See also Figure 1-4The surface of the connecting rod B7 is rotatably connected with a rotating block 9, and the insert strip 8 is connected to the rotating block 9 by a thread. The threaded connection design of the insert strip 8 and the rotating block 9 facilitates the fixing and disassembly of the insert strip 8. The surface of the connecting block 3 is rotatably connected with a screw rod A11, and the screw rod A11 is connected to the L-shaped frame 1 by a thread. The threaded connection design of the screw rod A11 and the L-shaped frame 1 has the effect of driving the connecting block 3 to move when the screw rod A11 rotates. A limit rod 12 is fixedly installed on the surface of the connecting block 3, and the limit rod 12 is slidably connected to the L-shaped frame 1. The sliding design of the limit rod 12 and the L-shaped frame 1 facilitates the fixing of the guard plate 2 in the L-shaped frame 1.

[0025] Embodiment 2

[0026] See also Figure 1-4 A slot B13 is provided on the surface of the guard plate 2, and an insert block 14 is inserted inside the slot B13. The insert block 14 is slidably connected to the slot B13. The sliding design of the insert block 14 and the slot B13 facilitates the installation of the support rod 15. The support rod 15 is fixedly installed on the surface of the insert block 14. The design of the support rod 15 serves to reinforce and support the guard plate 2. A screw rod B17 is rotatably connected inside the support rod 15. The screw rod B17 and the support rod 15 are threadedly connected. The threaded connection design of the screw rod B17 and the support rod 15 facilitates adjustment according to the width of the guard plate 2. A turning handle 16 is fixedly installed on the surface of the screw rod B17.

[0027] Working principle: When supporting the foundation pit, first fix the L-shaped frame 1 in the foundation pit, then insert the guard plate 2 into the L-shaped frame 1 through the slot A4, and then rotate the screw rod A11. When the screw rod A11 rotates, it will drive the connecting block 3 to move. When the connecting block 3 moves, it will drive the limit rod 12 to slide outward in the L-shaped frame 1, and also make the connecting rod B7 rotate on the connecting block 3. When the connecting rod B7 rotates, it will drive the connecting rod B7 to slide on the surface of the extension rod 6. After adjusting the connecting rod A5 and the connecting rod B7, insert the insertion strip 8 into the connecting rod B7, and then fix the rotating block 9 with the insertion strip 8 through the thread. At this time, the guard plate 2 and the L-shaped frame 1 can be fixed. The L-shaped frame 1, the guard plate 2, the connecting block 3, the connecting rod A5, the connecting rod B7, the extension rod 6, the screw rod Rod A11, limit rod 12, insert strip 8 and rotating block 9 play the role of facilitating the support of the foundation pit through L-shaped frame 1 and guard plate 2. While supporting the foundation pit, it also avoids the effect of the supporting structure blocking the passage of workers. When it is necessary to reinforce the guard plate 2, first insert the insert plate into the slot B13, and then rotate the screw rod B17 through the turning handle 16. When the screw rod B17 rotates, it will drive the support rod 15 and the insert block 14 to move, so as to support the guard plate 2 through the insert block 14. The screw rod B17, turning handle 16, support rod 15, insert block 14 and slot B13 play the role of facilitating the reinforcement and support of the guard plate 2, and also play the role of facilitating the adjustment of the length of the support rod 15 according to the width of the guard plate 2, thereby improving the adaptability of the support rod 15.

[0028] The above description is only a preferred embodiment of the present invention and does not limit the present invention in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes and apply it to other fields. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. A subway foundation pit support structure, comprising an L-shaped frame (1) and a connecting block (3), characterized in that: The surface of the L-shaped frame (1) is provided with a slot A (4), the interior of the slot A (4) is slidably connected to a guard plate (2), the surface of the L-shaped frame (1) is rotatably connected to a connecting rod A (5), the surface of the connecting rod A (5) is fixedly mounted with an extension rod (6), the surface of the connecting block (3) B is rotatably connected to a connecting rod B (7), the interior of the connecting rod B (7) is inserted with an insert strip (8), the surface of the connecting rod B (7) is rotatably connected to a rotating block (9), the surface of the connecting block (3) is rotatably connected to a screw rod A (11), and the surface of the connecting block (3) is fixedly mounted with a limit rod (12).

2. The subway foundation pit support structure according to claim 1, characterized in that: The surface of the guard plate (2) is provided with a slot B (13), an insert block (14) is inserted into the slot B (13), a support rod (15) is fixedly mounted on the surface of the insert block (14), a screw rod B (17) is rotatably connected to the inside of the support rod (15), and a handle (16) is fixedly mounted on the surface of the screw rod B (17).

3. The subway foundation pit support structure according to claim 1, characterized in that: The limiting rod (12) is slidably connected to the L-shaped frame (1), and the screw rod A (11) is threadedly connected to the L-shaped frame (1).

4. The subway foundation pit support structure according to claim 1, characterized in that: The extension rod (6) is slidably connected to the connecting rod B (7), and the insertion strip (8) is slidably connected to the positioning hole (10).

5. The subway foundation pit support structure according to claim 1, characterized in that: The inserting strip (8) and the rotating block (9) are connected via threads.

6. The subway foundation pit support structure according to claim 2, characterized in that: The insert block (14) is slidably connected to the slot B (13), and the screw rod B (17) is threadedly connected to the support rod (15).

Images