A foundation pit excavation support structure

Abstract

This utility model relates to the field of foundation pit support structure technology, specifically a foundation pit excavation support structure, including a support plate and a hydraulic support mechanism. A positioning rod is fixedly connected to the upper end of the support plate, and a positioning groove is formed at the lower end of the support plate. The two support plates are connected by engaging the positioning rod at the upper end of one support plate with the positioning groove at the lower end of another support plate. A support clamping mechanism is provided on one side of each support plate, which connects and clamps the two support plates together. By using multiple support plates, a corresponding number of support plates can be spliced ​​together according to the depth of the foundation pit, making operation convenient. Furthermore, the small height of each individual support plate makes transportation easier. The support clamping mechanism and the hydraulic support mechanism ensure a tighter fit between the two support plates while providing support.

Description

Technical Field

[0001] This utility model relates to the field of foundation pit support structure technology, specifically a foundation pit excavation support structure. Background Technology

[0002] For example, Chinese patent CN217053387U discloses a foundation pit excavation support device for civil construction, including a retaining plate, a hydraulic cylinder, a connecting seat, and a support plate. The hydraulic cylinder is directly fastened to the retaining plate; the support plate is installed in the connecting seat to support the end of the hydraulic cylinder; the connecting seats on the two oppositely installed retaining plates limit the two ends of the hydraulic cylinder respectively; the hydraulic cylinder is connected to the hydraulic station through an oil pipe; the retaining plate includes a vertically arranged rectangular plate.

[0003] However, the above solution has the following shortcomings: the above patent can provide strong support for the tunnel by using the combination of retaining plate, hydraulic cylinder and connecting seat, but because the support plate is relatively high, it is not convenient to transport and install the support. At the same time, the height of the support plate cannot be adjusted at will according to the depth of the foundation pit. Therefore, we have introduced a foundation pit excavation support structure. Utility Model Content

[0004] The purpose of this utility model is to provide a foundation pit excavation support structure to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A foundation pit excavation support structure includes a support plate and a hydraulic support mechanism. A positioning rod is fixedly connected to the upper end of the support plate, and a positioning groove is formed at the lower end of the support plate. The two support plates are connected by engaging the positioning rod at the upper end of the support plate with the positioning groove at the lower end of another support plate. A support clamping mechanism is provided on one side of the support plate to connect and clamp the two support plates together. The hydraulic support mechanism is used to support the two support clamping mechanisms. Several reinforcing rods are fixedly connected to the side of the support plate away from the hydraulic support mechanism.

[0007] Preferably, the support and clamping mechanism includes a U-shaped plate with two positioning through holes on the outer side of the U-shaped plate. The positioning through holes are movably connected to a support rod, and the support rod is fixedly connected to the outer side of the U-shaped plate. A clamping plate is movably connected to the inner side of the U-shaped plate by connecting bolts. The lower end of the clamping plate is also movably connected to two connecting rings by connecting bolts, and the connecting rings are fixedly connected to the outer side of the U-shaped plate.

[0008] Preferably, the U-shaped plate has a screw hole on the side away from the support plate, and a connecting plate is provided on one side of the U-shaped plate. Two sliding grooves are provided on the outer side of the connecting plate, and a screw is provided in the sliding groove. The screw is screwed into the screw hole, so that the connecting plate and the U-shaped plate are installed together. A limit ring is fixedly connected to the side of the connecting plate away from the U-shaped plate.

[0009] Preferably, the hydraulic support mechanism includes a hydraulic pipe, and a T-shaped support rod is movably connected inside the hydraulic pipe. The T-shaped support rod has several insertion holes on its outer side, and limit bolts are inserted into the insertion holes.

[0010] Compared with the prior art, the beneficial effects of this utility model are: by setting up a number of support plates, the corresponding number of support plates can be spliced ​​together according to the depth of the foundation pit, which is convenient to operate. At the same time, due to the small height of a single support plate, it is also convenient to transport. Furthermore, by setting up a support pressing mechanism and a hydraulic support mechanism, the support plates can be supported while also making the two support plates fit together more tightly. Attached Figure Description

[0011] Figure 1 This is a three-dimensional structural diagram of the support plate of this utility model in use;

[0012] Figure 2 This is a three-dimensional structural diagram showing the connection relationship between the support plate and the U-shaped plate of this utility model;

[0013] Figure 3 This is a three-dimensional structural diagram showing the exploded view of the connection between the support plate and the U-shaped plate of this utility model.

[0014] Figure 4 This is a three-dimensional structural diagram of the connection state of several support plates of this utility model;

[0015] Figure 5 This is a three-dimensional sectional view of the support plate of this utility model;

[0016] Figure 6 This is a three-dimensional structural diagram of the connection between the hydraulic pipe and the T-shaped support rod of this utility model.

[0017] In the diagram: 1. Support plate; 2. Connecting ring; 3. U-shaped plate; 4. Support rod; 5. Pressing plate; 6. Connecting plate; 7. Limiting ring; 8. Hydraulic pipe; 9. Reinforcing rod; 10. Positioning rod; 11. Limiting bolt; 12. Insertion hole; 13. T-shaped support rod; 14. Screw hole; 15. Positioning through hole; 16. Connecting bolt; 17. Positioning groove; 18. Slide groove. Detailed Implementation

[0018] 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 of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] Please see Figure 1-6 This utility model provides a technical solution:

[0020] Example 1:

[0021] A foundation pit excavation support structure includes a support plate 1 and a hydraulic support mechanism. A positioning rod 10 is fixedly connected to the upper end of the support plate 1, and a positioning groove 17 is provided at the lower end of the support plate 1. The two support plates 1 are connected by snapping the positioning rod 10 at the upper end of the support plate 1 into the positioning groove 17 at the lower end of another support plate 1. Several support plates 1 can be installed together according to the depth of the foundation pit. A support clamping mechanism is provided on one side of the support plate 1. The two support plates 1 are connected together and clamped by the support clamping mechanism. The hydraulic support mechanism is used to support the two support clamping mechanisms. Several reinforcing rods 9 are fixedly connected to the side of the support plate 1 away from the hydraulic support mechanism. The strength of the support plate 1 is improved by the reinforcing rods 9.

[0022] The support and clamping mechanism includes a U-shaped plate 3. Two positioning through holes 15 are opened on the outer side of the U-shaped plate 3. The positioning through holes 15 are movably connected to the support rod 4. The support rod 4 is fixedly connected to the outer side of the U-shaped plate 3. A clamping plate 5 is movably connected to the inner side of the U-shaped plate 3 by a connecting bolt 16. The lower end of the clamping plate 5 is also movably connected to two connecting rings 2 by a connecting bolt 16. The connecting rings 2 are fixedly connected to the outer side of the U-shaped plate 3. The movement of the connecting plate 6 drives the U-shaped plate 3 to move. The U-shaped plate 3 slides along the support rod 4 and pushes the clamping plate 5 to move. During the movement of the clamping plate 5, it pushes the support plate 1 connected to it to move downward, so that the two support plates 1 are tightly fitted together.

[0023] A screw hole 14 is provided on the side of the U-shaped plate 3 away from the support plate 1. A connecting plate 6 is provided on one side of the U-shaped plate 3. Two sliding grooves 18 are provided on the outer side of the connecting plate 6. A screw is provided in the sliding groove 18 and screwed into the screw hole 14 so that the connecting plate 6 and the U-shaped plate 3 are installed together. A limit ring 7 is fixedly connected to the side of the connecting plate 6 away from the U-shaped plate 3. In actual use, multiple connecting plates 6 will appear depending on the depth of the pit. At this time, several connecting plates 6 can be connected to each other by screws. During the movement of the U-shaped plate 3, the screw located in the sliding groove 18 will move along the sliding groove 18.

[0024] The hydraulic support mechanism includes a hydraulic pipe 8, with a T-shaped support rod 13 movably connected inside the hydraulic pipe 8. Several insertion holes 12 are opened on the outer side of the T-shaped support rod 13, and limit bolts 11 are inserted into the insertion holes 12. The hydraulic oil supply device is connected to the hydraulic pipe 8. The hydraulic oil enters the hydraulic pipe 8 and pushes the T-shaped support rod 13 to move, causing the two connecting plates 6 to be pushed outward. After the support plates 1 on both sides are in the supported position, the limit bolts 11 are installed into the corresponding insertion holes 12 so that the T-shaped support rod 13 will not move into the hydraulic pipe 8. At this time, the hydraulic oil supply device can be connected to another hydraulic pipe 8.

[0025] Working principle: When in use, two support plates 1 are supported on both sides of the foundation pit. After the support is completed, the positioning groove 17 at the lower end of the other support plate 1 is engaged with the positioning rod 10 at the upper end of the support plate 1 supported in the foundation pit. At this time, the two support plates 1 are installed together. According to the depth of the foundation pit, multiple support plates 1 can be installed together. After the installation is completed, the positioning through hole 15 on the outside of the U-shaped plate 3 is connected to the support rod 4 on the outside of the lower support plate 1. The clamping plate 5 is installed on the inside of the U-shaped plate 3 by connecting bolts 16. Then, the lower end of the clamping plate 5 is connected to the two connecting rings 2 on the outside of the other support plate 1 by connecting bolts 16. At this time, the upper and lower support plates 1 are installed together. The connecting plate 6 is screwed into the screw hole 14 by screws, so that the connecting plate 6 is installed together with the U-shaped plate 3.

[0026] After the screw is screwed into the screw hole 14, the connecting plate 6 should be able to slide up and down. One end of the hydraulic pipe 8 is placed into the limiting ring 7 on one side, and one end of the T-shaped support rod 13 is placed into the limiting ring 7 on the outside of the other connecting plate 6. The hydraulic oil supply device is connected to the hydraulic pipe 8, and the hydraulic oil enters into the hydraulic pipe 8 to push the T-shaped support rod 13 to move, so that the two connecting plates 6 are pushed outward. The movement of the connecting plates 6 drives the U-shaped plate 3 to move. The U-shaped plate 3 slides along the support rod 4 and pushes the pressing plate 5 to move. During the movement of the pressing plate 5, it will push the support plate 1 connected to it to move downward, so that the two support plates 1 are tightly attached together. When the U-shaped plate 3 moves, the screw located in the slide groove 18 will move along the slide groove 18. At this time, the support of the support plate 1 in the foundation pit is completed.

[0027] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A foundation pit excavation support structure, characterised in that: The device includes a support plate and a hydraulic support mechanism. A positioning rod is fixedly connected to the upper end of the support plate, and a positioning groove is opened at the lower end of the support plate. The two support plates are connected by snapping the positioning rod at the upper end of the support plate into the positioning groove at the lower end of the other support plate. A support pressing mechanism is provided on one side of the support plate to connect and press the two support plates together. The hydraulic support mechanism is used to support the two support pressing mechanisms. Several reinforcing rods are fixedly connected to the side of the support plate away from the hydraulic support mechanism.

2. The foundation pit excavation support structure according to claim 1, characterized in that: The supporting and pressing mechanism includes a U-shaped plate with two positioning through holes on the outer side of the U-shaped plate. The positioning through holes are movably connected to a support rod, and the support rod is fixedly connected to the outer side of the U-shaped plate. A pressing plate is movably connected to the inner side of the U-shaped plate by connecting bolts. The lower end of the pressing plate is also movably connected to two connecting rings by connecting bolts, and the connecting rings are fixedly connected to the outer side of the U-shaped plate.

3. The foundation pit excavation support structure according to claim 2, characterized in that: The U-shaped plate has a screw hole on the side away from the support plate, and a connecting plate is provided on one side of the U-shaped plate. Two sliding grooves are provided on the outer side of the connecting plate, and a screw is provided in the sliding groove. The screw is screwed into the screw hole, so that the connecting plate and the U-shaped plate are installed together. A limit ring is fixedly connected to the side of the connecting plate away from the U-shaped plate.

4. The foundation pit excavation support structure according to claim 1, characterized in that: The hydraulic support mechanism includes a hydraulic pipe, and a T-shaped support rod is movably connected inside the hydraulic pipe. Several insertion holes are opened on the outer side of the T-shaped support rod, and limit bolts are inserted into the insertion holes.

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