Foundation pit support changing device

Abstract

The utility model relates to a foundation pit support changing device, and belongs to the technical field of building or reinforcing of the edge of a foundation pit. The device comprises an open operation box and a base connected with the bottom of the operation box through a vertical hydraulic rod. The interior of the operation box is divided into a plurality of square containing grooves, sliding strips and horizontal hydraulic rods are arranged in the square containing grooves respectively, all the horizontal hydraulic rods are placed in the same direction, the fixed ends of the horizontal hydraulic rods are fixed to the inner walls of the square containing grooves, and the telescopic ends of the horizontal hydraulic rods are connected to the sliding strips; the fixed end of the inclined hydraulic rod and the sliding strip form a first hinge, and the telescopic end of the inclined hydraulic rod and the supporting plate form a second hinge and a third hinge which are perpendicular to each other in the steering direction. The horizontal hydraulic rod stretches out and draws back to drive the sliding strip to horizontally move in the square containing groove, the inclined hydraulic rod forms first rotation in the vertical plane relative to the sliding strip at the first hinge, and the supporting plate forms second rotation and third rotation in the vertical plane and the horizontal plane relative to the inclined hydraulic rod at the second hinge and the third hinge.

Description

Technical Field

[0001] The utility model relates to a foundation pit support replacement device, belonging to the technical field of repairing or reinforcing the edge of a foundation pit (E02D17 / 04). Background Art

[0002] With the development of urban transportation, underground interchange projects have increasingly become the preferred solution to urban traffic congestion. This project effectively alleviates the pressure of ground traffic by building complex interchange structures underground, connecting multiple main roads and expressways. Foundation pit replacement is an important construction step in underground interchange projects. The support device is used to reduce the deformation of the side wall during the replacement process, thereby improving the stability of the side wall of the foundation pit and the construction safety. At present, the support devices used in foundation pit replacement are mostly shallow pits with flat sides, and the height and angle adjustment of the support devices are small. However, there are more and more large-scale underground interchange projects, and the construction foundation pits are mostly ultra-deep, large-curvature arc-shaped deep pits. Such foundation pits have multiple turning points, large curvature, and complex forces. Traditional support devices cannot flexibly cope with ultra-deep, large-curvature arc-shaped deep pits. Moreover, in the traditional foundation pit replacement operation, the disassembly and assembly process of the support device is often complicated and time-consuming, which is even more unfavorable for the replacement of ultra-deep, large-curvature arc-shaped deep pits. Summary of the invention

[0003] The technical problem to be solved by the utility model is: how to improve the adjustability of the foundation pit support replacement device.

[0004] The utility model provides a technical solution for solving the above technical problems: a foundation pit support replacement device, comprising an open operating box and a base connected to the bottom of the operating box through a vertical hydraulic rod; the operating box is divided into a plurality of square mounting grooves, and the square mounting grooves are respectively provided with slide bars and horizontal hydraulic rods, all of the horizontal hydraulic rods are placed in the same direction, the fixed end of the horizontal hydraulic rod is fixed to the inner wall of the square mounting groove, and the telescopic end of the horizontal hydraulic rod is connected to the slide bar; the fixed end of the oblique hydraulic rod and the slide bar form a first hinge, and the telescopic end of the oblique hydraulic rod and the support plate form two second hinges and a third hinge that are turned perpendicular to each other; the telescopic extension of the horizontal hydraulic rod drives the slide bar to move horizontally in the square mounting groove, the oblique hydraulic rod forms a first rotation in a vertical plane relative to the slide bar at the first hinge, and the support plate forms a second rotation and a third rotation in a vertical plane and a horizontal plane respectively relative to the oblique hydraulic rod at the second hinge and the third hinge.

[0005] Furthermore, there is a short circuit between the second hinge and the third hinge, one end of the short circuit and the telescopic end of the oblique hydraulic rod form the second hinge, and the other end of the short circuit and the support plate form the third hinge.

[0006] Furthermore, the base is provided with a plurality of supporting legs, and cross braces are connected between the supporting legs.

[0007] Furthermore, the telescopic end of the vertical hydraulic rod is fixedly connected to the bottom of the operation box, and the fixed end of the vertical hydraulic rod is fixedly connected to the top of the base.

[0008] The beneficial effects of the utility model are as follows: since the base is connected to the bottom of the operation box through the vertical hydraulic rod, and the sliders in the respective accommodating grooves in the operation box are horizontally moved by the extension and retraction of the horizontal hydraulic rod, the height of the operation box and the horizontal distance of the sliders can be adjusted according to the actual situation of the foundation pit, and the height of the support plate and the horizontal distance from the side wall of the foundation pit are indirectly adjusted; and since the fixed end of the oblique hydraulic rod and the slide bar form a first hinge, the oblique hydraulic rod forms a first rotation in a vertical plane relative to the slide bar at the first hinge, and therefore the height of the operation box and the horizontal distance of the sliders can be further adjusted under the extension and retraction of the oblique hydraulic rod and the rotation of the first hinge. The precise support plate height and distance from the side wall of the foundation pit are determined; and the telescopic end of the oblique hydraulic rod and the support plate form two second hinges and a third hinge that are turned perpendicular to each other, so that the support plate forms a second rotation and a third rotation in the vertical plane and the horizontal plane respectively at the second hinge and the third hinge relative to the oblique hydraulic rod. Therefore, the angle of the support plate is adjusted by the rotation of the second hinge and the third hinge to offset the deviation caused by the ultra-deep, large-curvature arc-shaped deep pit, so that the support plate can fit the side wall of the foundation pit, thereby protecting the stability of the side wall of the foundation pit and the construction safety to a great extent; in addition, most of the components are connected by hinges for easy disassembly and assembly, saving time. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] The foundation pit support replacement device of the utility model is further described below in conjunction with the accompanying drawings.

[0010] Figure 1 It is a schematic diagram of the overall structure of the foundation pit support replacement device of the embodiment.

[0011] In the figure: 1. operating box; 2. hydraulic rod; 3. base; 4. square mounting groove; 5. slide bar; 6. horizontal hydraulic rod; 7. oblique hydraulic rod; 8. first hinge; 9. support plate; 10. first hinge; 11. second hinge; 12. short circuit; 13. rivet; 14. support foot; 15. cross brace. DETAILED DESCRIPTION Example

[0012] A foundation pit support replacement device of this embodiment is as follows Figure 1As shown, it includes an open operating box 1 and a base 3 connected to the bottom of the operating box 1 through a vertical hydraulic rod 2; the operating box is divided into three square storage grooves 4, and a slide bar 5 and two horizontal hydraulic rods 6 are respectively arranged in the square storage grooves 4. All horizontal hydraulic rods 6 are placed in the same direction, and the fixed ends of the horizontal hydraulic rods 6 are fixed to the inner walls of the square storage grooves 4. The telescopic ends of the horizontal hydraulic rods 6 are connected to the slide bar 5. The telescopic ends of the horizontal hydraulic rods 6 drive the slide bar 5 to move horizontally in the square storage grooves 4; the fixed ends of every two oblique hydraulic rods 7 form a first hinge 8 with the same slide bar 5, and the oblique hydraulic rods 7 are connected to the slide bar 5. The pressure rod 7 forms a first rotation in a vertical plane at the first hinge 8 relative to the slide bar 5; the telescopic end of the oblique hydraulic rod 7 and the support plate 9 form two second hinges 10 and a third hinge 11 that are perpendicular to each other, and there is a short circuit 12 between the second hinge 10 and the third hinge 11. One end of the short circuit 12 forms the second hinge 10 with the telescopic end of the oblique hydraulic rod 7, and the other end of the short circuit 12 forms the third hinge 11 with the support plate 9. The support plate 9 forms a second rotation and a third rotation in the vertical plane and the horizontal plane respectively relative to the oblique hydraulic rod 7 at the second hinge 10 and the third hinge 11.

[0013] During the pit support replacement operation, the base 3 is fixed in the pit with rivets 13, and the extension and retraction of the vertical hydraulic rod 2 and the horizontal hydraulic rod 6 are controlled according to the actual situation of the pit to adjust the height of the operating box 1 and the horizontal distance of the slider 9. The changes in the height of the operating box 1 and the horizontal distance of the slider 5 drive the changes in the height of the support plate 9 and the horizontal distance of the support plate 9 from the pit side wall; then the extension and retraction of the oblique hydraulic rod 7 and the rotation amount of the first hinge 8 are controlled simultaneously to further adjust the height of the support plate 9 and the horizontal distance from the pit side wall more accurately, and finally the angle of the support plate 9 is changed by adjusting the rotation amount of the second hinge 10 and the rotation amount of the third hinge 11 to offset the deviation caused by the ultra-deep large curvature arc pit, so that the support plate 9 can fit the pit side wall, which greatly protects the stability of the pit side wall and the construction safety.

[0014] In addition, the base is provided with four supporting legs 14, and a cross brace 15 is fixed between the supporting legs 14 by screws to improve the stability of the device during operation.

[0015] Moreover, before and after the foundation pit replacement, since the parts are mostly connected by hinges, screws, and rivets 14, they can be quickly disassembled and assembled, saving time.

[0016] The base 3 is connected to the bottom of the operating box 1 through the vertical hydraulic rod 2. In this embodiment, the telescopic end of the vertical hydraulic rod 2 is fixedly connected to the bottom of the operating box 1, and the fixed end of the vertical hydraulic rod 2 is fixedly connected to the top of the base 3. In addition, it is easy to think that the telescopic end of the vertical hydraulic rod 2 can also be connected to the bottom of the operating box 1 by hinges or other active connections so that the operating box 1 can move laterally, which will not be repeated here.

[0017] The present invention is not limited to the above-mentioned embodiments, and any technical solutions formed by equivalent replacement shall fall within the protection scope required by the present invention.

Claims

1. A foundation pit replacement device, characterized in that : It includes an open operating box and a base connected to the bottom of the operating box through a vertical hydraulic rod; the operating box is divided into a plurality of square mounting grooves, and the square mounting grooves are respectively provided with slide bars and horizontal hydraulic rods, and all horizontal hydraulic rods are placed in the same direction, and the fixed end of the horizontal hydraulic rod is fixed to the inner wall of the square mounting groove, and the telescopic end of the horizontal hydraulic rod is connected to the slide bar; the fixed end of the oblique hydraulic rod and the slide bar form a first hinge, and the telescopic end of the oblique hydraulic rod and the support plate form two second hinges and a third hinge that are turned perpendicular to each other; the telescopic extension of the horizontal hydraulic rod drives the slide bar to move horizontally in the square mounting groove, and the oblique hydraulic rod forms a first rotation in a vertical plane relative to the slide bar at the first hinge, and the support plate forms a second rotation and a third rotation in a vertical plane and a horizontal plane respectively relative to the oblique hydraulic rod at the second hinge and the third hinge.

2. The device according to claim 1, characterized in that: There is a short circuit between the second hinge and the third hinge, one end of the short circuit and the telescopic end of the oblique hydraulic rod form the second hinge, and the other end of the short circuit and the support plate form the third hinge.

3. The device according to claim 1, characterized in that: The base is provided with a plurality of supporting legs, and cross braces are connected between the supporting legs.

4. The device according to claim 1, characterized in that: The telescopic end of the vertical hydraulic rod is fixedly connected to the bottom of the operation box, and the fixed end of the vertical hydraulic rod is fixedly connected to the top of the base.

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