Foundation pit supporting device

Abstract

The utility model discloses a foundation pit supporting device which comprises a base and a movable protection assembly plate arranged on the side face of the base, a plurality of telescopic rods are arranged on the top face of the base in a rotating mode, and the telescopic rods are driven by an external driving source. A connecting piece is arranged at the top end of the telescopic rod, a connecting buckle is correspondingly arranged on the movable protection assembly plate, and the connecting piece can be connected with the connecting buckle in a matched mode after the telescopic rod extends to the movable protection assembly plate. Compared with the prior art, the movable protection assembly plate is ingenious in structure, the protection assembly plate is flexible to use and can be flexibly attached to the side walls of different foundation pits, the use area of the movable protection assembly plate is increased, and various foundation pit side walls are stably protected. And meanwhile, the base is stabilized on the ground, the movable protection assembly plates are supported through the telescopic rods, the movable protection assembly plates are stably attached to the side wall of the foundation pit, and the use stability is high. And the base, the telescopic rod and the movable protection assembly plate are easy to disassemble and convenient to install, and good flexibility is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of foundation pit support, in particular to a foundation pit support device. Background Art

[0002] Foundation pit support refers to temporary support and protection measures for the side walls of the foundation pit and the surrounding environment during the construction of underground structures (such as building basements, subway stations, tunnels, etc.) to ensure stability during the foundation pit excavation process, prevent the collapse of the surrounding soil, groundwater seepage and other problems, and protect the safety of nearby buildings, underground pipelines and other facilities.

[0003] In the existing foundation pit support measures, a straight steel plate is usually used to stick to the side wall of the foundation pit, and a support rod is provided on the other side of the steel plate to support the steel plate so that the steel plate can be stably attached to the side wall of the foundation pit. For example, Chinese patent application number CN202320319032.2 discloses a foundation pit support frame for industrial construction, which includes a foundation pit support plate, a fixed bottom plate is fixedly connected to the bottom of the foundation pit support plate, a telescopic rod structure is rotatably connected to the foundation pit support plate, a second ground fixing plate is rotatably connected to the telescopic rod structure, the foundation pit support plate and the second ground fixing plate are fixed to the ground, and the telescopic rod structure includes a sleeve seat, a sliding rod and a locking seat. The foundation pit support plate is fixed to the ground using the fixed bottom plate, and the foundation pit is supported by the foundation pit support plate, and the foundation pit support plate is reinforced in cooperation with the telescopic rod structure and the second ground fixing plate. The foundation pit support plate is in a straight shape, and can play a stabilizing role when protecting the straight side walls of the foundation pit. However, for the curved side walls of the foundation pit, when the straight foundation pit protection plate is used to protect the curved side walls of the foundation pit, there will be a large space between the two, resulting in a low adhesion rate of the straight foundation pit protection plate to protect the curved side walls of the foundation pit, and it is impossible to stably protect the curved side walls of the foundation pit over a large area. Therefore, it is urgent to design a flexible foundation pit protection plate to solve the above problems. Utility Model Content

[0004] The utility model aims to provide a foundation pit supporting device to solve the problems described in the background technology.

[0005] The technical solution of the utility model is achieved in this way:

[0006] A foundation pit support device comprises a base and a movable protective group plate arranged on the side of the base, a plurality of telescopic rods are rotatably arranged on the top surface of the base, and the telescopic rods are driven by an external driving source;

[0007] A connecting piece is provided at the top end of the telescopic rod, and a connecting buckle is correspondingly provided at the movable protection group plate. The connecting piece can be adapted and connected with the connecting buckle after the telescopic rod is extended toward the movable protection group plate.

[0008] A further technical solution is that the movable protective plate assembly includes multiple rotating columns and multiple protective plates, wherein one rotating column is rotatably connected to two protective plates on opposite sides, and multiple rotating columns are spaced apart between the multiple protective plates.

[0009] A further technical solution is that each of the rotating columns is provided with two first annular grooves and two second annular grooves at the upper and lower parts, and the upper and lower parts of the protective plates on the left and right sides of the rotating columns are correspondingly provided with rotating sleeves which are respectively sleeved in the first annular grooves and the second annular grooves for rotational connection.

[0010] A further technical solution is that balls are provided between the rotating sleeve and the first annular groove and the second annular groove.

[0011] A further technical solution is that the connecting buckle is arranged on the side of the rotating column or the protective plate.

[0012] A further technical solution is that a strip block is provided on the left side of the top surface of the base, the strip block is provided with a plurality of movable grooves, a plurality of rotating rods are horizontally provided in the movable grooves, and the plurality of rotating rods are correspondingly connected to the bottom ends of the telescopic rods.

[0013] A further technical solution is that the telescopic rod is a hydraulic telescopic rod, and the hydraulic telescopic rod is driven by the external driving source.

[0014] A further technical solution is that the connecting member is a curved column, the top end of the curved column is fixedly connected to the ground with the top end of the hydraulic telescopic rod, and the bottom end of the curved column can be extended into the connecting buckle for adaptive connection.

[0015] A further technical solution is that a plurality of fixing rods are provided on the bottom surface of the base, and the fixing rods are used to penetrate into the ground to stabilize the base.

[0016] A further technical solution is that the fixing rod comprises a fixing block and an embedding block, the top surface of the fixing block is fixedly connected to the bottom surface of the base, and the bottom surface of the fixing block is detachably connected to the top surface of the embedding block.

[0017] The beneficial effects of the utility model are:

[0018] 1. The movable protective panels can be folded flexibly and attached to the curved side walls of the foundation pit, which provides a certain degree of protection for the curved side walls of the foundation pit. At the same time, the movable protective panels also provide protection for the directly facing foundation pits. Compared with traditional technologies, the protective panels can be used flexibly and can be attached to different side walls of the foundation pit, thereby increasing the use area of ​​the movable protective panels and providing stable protection for a variety of side walls of the foundation pit.

[0019] 2. After the base is fixed on the ground, the output end of the telescopic rod arranged on the top surface thereof is extended by an external driving source, and the connecting piece is brought close to the side of the movable protective panel. After the output end of the telescopic rod is extended to a preset length, the connecting piece is adapted to be connected with the connecting buckle, so that the base and the movable protective panel are connected through the telescopic rod. The base is firmly on the ground, and the movable protective panel is supported by the telescopic rod, so that the movable protective panel is stably attached to the side wall of the foundation pit. On the whole, the utility model has high stability in use.

[0020] 3. Through the interlocking design of the connecting parts and the connecting buckles, the base, telescopic rod and movable protective group plate are easy to disassemble and install, and the overall use flexibility is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0022] Figure 2 It is a side view of the utility model;

[0023] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0024] Figure 4 is a schematic front cross-sectional view of a rotating column;

[0025] Figure 5 is a top view cross-sectional schematic diagram of a rotating column;

[0026] Figure 6 It is a schematic cross-sectional view of the bar block from the right side;

[0027] Figure 7 It is a top view schematic diagram of the movable protection group panel in the folded state.

[0028] In the figure, 1, base; 2, connecting piece; 3, connecting buckle; 4, rotating column; 5, protective plate; 6, first annular groove; 7, second annular groove; 8, rotating sleeve; 9, ball bearing; 10, bar block; 11, movable groove; 12, rotating rod; 13, fixed block; 14, embedded block; 15, hydraulic telescopic rod. DETAILED DESCRIPTION

[0029] In order to better understand the technical content of the present invention, specific embodiments are provided below, and the present invention is further described in conjunction with the accompanying drawings.

[0030] Example 1

[0031] See also Figure 1 and Figure 7The utility model provides a foundation pit supporting device, including a base 1 and a movable protective plate arranged on the side of the base 1. A plurality of telescopic rods are rotatably arranged on the top surface of the base 1, and the telescopic rods are driven by an external driving source; a connecting piece 2 is arranged on the top of the telescopic rod, and a connecting buckle 3 is correspondingly arranged on the movable protective plate. The connecting piece 2 can be adapted and connected with the connecting buckle 3 after the telescopic rod is extended toward the movable protective plate.

[0032] Furthermore, a plurality of fixing rods are provided on the bottom surface of the base 1 , and the fixing rods are used to penetrate into the ground to stabilize the base 1 .

[0033] Preferably, the fixing rod comprises a fixing block 13 and an embedding block 14 , the top surface of the fixing block 13 is fixedly connected to the bottom surface of the base 1 , and the bottom surface of the fixing block 13 is detachably connected to the top surface of the embedding block 14 .

[0034] It should be noted that the external driving source is a hydraulic press. The fixing rod is used to increase the grip of the base 1. At the same time, the fixing rod is divided into a fixing block 13 and an embedding block 14. For softer geology, the fixing block 13 is directly used to extend into the ground, and for harder geology, the embedding block 14 is used to conveniently extend into the ground. The bottom of the embedding block 14 is conical in shape, which is convenient for extending into the ground. In addition, the bottom surface of the fixing block 13 and the top surface of the embedding block 14 are connected by threaded detachable connection, and appropriate solutions are adopted for different application scenarios, which will not be repeated here.

[0035] Specifically, the base 1 is placed on the ground, and the fixing rod can be extended into the ground to increase the grip of the base 1 and improve the stability of the base 1. After the base 1 is placed stably, the movable protective panel is attached to the side wall of the foundation pit. If there is a side wall facing the foundation pit directly, the movable protective panel is directly attached to the side wall facing the foundation pit, and then the output end of the telescopic rod is started by an external driving source to extend in the direction of the movable protective panel. After extending to a preset length, the connector 2 is snap-connected with the connector 3, thereby supporting and stabilizing the movable protective panel. If there is a curved side wall of the foundation pit, the movable protective panel is folded corresponding to the side part of the curved surface of the foundation pit to form a curved shape, thereby corresponding to the curved side wall of the foundation pit. When attached to the curved side wall of the foundation pit, it has a certain protective effect on the curved side wall of the foundation pit. Compared with traditional technology, the movable protective panel is flexibly used, and can be flexibly attached to the side wall of different foundation pits, thereby increasing the use area of ​​the movable protective panel and stably protecting a variety of foundation pit side walls.

[0036] See also Figure 1 , Figure 4 and Figure 5 In this embodiment, the movable protective plate assembly includes a plurality of rotating columns 4 and a plurality of protective plates 5, wherein one rotating column 4 is rotatably connected to two protective plates 5 on opposite sides, and the plurality of rotating columns 4 are spaced apart between the plurality of protective plates 5.

[0037] Furthermore, each rotating column 4 is provided with two first annular grooves 6 and two second annular grooves 7 at the upper and lower parts, and the upper and lower parts of the protective plates 5 on the left and right sides of the rotating column 4 are correspondingly provided with rotating sleeves 8 which are respectively sleeved in the first annular grooves 6 and the second annular grooves 7 for rotational connection.

[0038] Furthermore, balls 9 are provided between the rotating sleeve 8 and the first annular groove 6 and the second annular groove 7 .

[0039] Specifically, a plurality of protective plates 5 and a plurality of rotating columns 4 are connected to form a movable protective panel assembly, which is applied in the protection of the curved side wall of the foundation pit, and is flexibly adapted to improve the contact rate between the movable protective panel assembly and the curved side wall of the foundation pit. When the curved side wall of the foundation pit is actually used, the rotating column 4 or the protective plate 5 is pushed toward the curved side wall, and the rotating sleeve and the first annular groove 6 and the second annular groove 7 are relatively rotated, so that the rotating column 4 and the protective plate 5 are folded to form a curved surface, thereby adapting to the curved side wall of the foundation pit, and the movable protective panel assembly is in contact with the curved side wall of the foundation pit over a large area. When the movable protective panel assembly is in contact with the curved surface, the telescopic rod supports the movable protective panel assembly to achieve the purpose of stable protection. A ball 9 is provided between the rotating sleeve 8 and the first annular groove 6 and the second annular groove 7 to reduce friction between the rotating sleeve 8 and the first annular groove 6 and the second annular groove 7, and the rotation is more convenient.

[0040] See also Figures 2 to 3 In a preferred embodiment, the connecting buckle 3 is arranged on the side of the rotating column 4 or the protective plate 5.

[0041] It should be noted that, according to actual needs, the connecting buckle 3 is set on the side of the rotating column 4 or the protective plate 5 to complete the folding of the movable protective plate assembly into a curved surface.

[0042] See also Figure 1 and Figure 6 In this embodiment, a strip block 10 is provided on the left side of the top surface of the base 1, and the strip block 10 is provided with a plurality of movable grooves 11, and a plurality of rotating rods 12 are horizontally provided in the plurality of movable grooves 11, and the plurality of rotating rods 12 are correspondingly connected to the bottom ends of the telescopic rods.

[0043] Furthermore, the telescopic rod is a hydraulic telescopic rod 15 , and the hydraulic telescopic rod 15 is driven by an external driving source.

[0044] Furthermore, the connecting member 2 is a curved column, the top end of which is fixedly connected to the ground with the top end of the hydraulic telescopic rod, and the bottom end of the curved column can be inserted into the connecting buckle 3 for adaptive connection.

[0045] Specifically, when the bottom end of the hydraulic telescopic rod 15 needs to adjust the angle, the angle adjustment is completed by swinging up and down around the rotating rod 12 with the rotating rod 12 as the origin, which is suitable for connecting the connecting piece 2 with the connecting buckle 3 that is not on the same horizontal line (such as attached to the side wall of the curved surface). The connecting piece 2 is a curved column to avoid the straight column from easily producing dry movement when the connecting buckle 3 is connected when it is on the curved surface, and the buckle connection cannot be completed smoothly.

[0046] When the utility model is used, the base 1 is placed at a predetermined position, and the fixing rod is extended into the ground. The movable protection panel is placed correspondingly on the straight side wall or the curved side wall of the foundation pit, and the output end of the hydraulic telescopic rod 15 is driven by a hydraulic press to connect the connecting piece 2 to the connecting buckle 3 set on the movable protection panel, so as to achieve the purpose of stabilizing and protecting the side wall of the foundation pit.

[0047] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A foundation pit support device, characterized in that: It includes a base and a movable protective panel arranged on the side of the base, and a plurality of telescopic rods are rotatably arranged on the top surface of the base, and the telescopic rods are driven by an external driving source; A connecting piece is provided at the top end of the telescopic rod, and a connecting buckle is correspondingly provided at the movable protection group plate. The connecting piece can be adapted and connected with the connecting buckle after the telescopic rod is extended toward the movable protection group plate.

2. A foundation pit supporting device according to claim 1, characterized in that: The movable protection plate assembly includes a plurality of rotating columns and a plurality of protection plates, wherein one rotating column is rotationally connected to two protection plates on opposite sides, and the plurality of rotating columns are spaced apart between the plurality of protection plates.

3. A foundation pit supporting device according to claim 2, characterized in that: Each of the rotating columns is provided with two first annular grooves and two second annular grooves at the upper and lower parts, and the upper and lower parts of the protective plates on the left and right sides of the rotating column are correspondingly provided with rotating sleeves which are respectively sleeved in the first annular grooves and the second annular grooves for rotational connection.

4. A foundation pit supporting device according to claim 3, characterized in that: Ball bearings are arranged between the rotating sleeve and the first annular groove and the second annular groove.

5. A foundation pit supporting device according to claim 2, characterized in that: The connecting buckle is arranged on the side of the rotating column or the protective plate.

6. A foundation pit supporting device according to claim 1, characterized in that: A strip block is provided on the left side of the top surface of the base, and the strip block is provided with a plurality of movable grooves, and a plurality of rotating rods are transversely provided in the plurality of movable grooves, and the plurality of rotating rods are correspondingly connected to the bottom ends of the telescopic rods.

7. A foundation pit supporting device according to claim 6, characterized in that: The telescopic rod is a hydraulic telescopic rod, and the hydraulic telescopic rod is driven by the external driving source.

8. A foundation pit supporting device according to claim 7, characterized in that: The connecting piece is a curved column, the top end of which is fixedly connected to the ground with the top end of the hydraulic telescopic rod, and the bottom end of which can be inserted into the connecting buckle for adaptive connection.

9. A foundation pit supporting device according to claim 1, characterized in that: The bottom surface of the base is provided with a plurality of fixing rods, and the fixing rods are used to penetrate into the ground to stabilize the base.

10. A foundation pit supporting device according to claim 9, characterized in that: The fixing rod comprises a fixing block and an embedding block, the top surface of the fixing block is fixedly connected to the bottom surface of the base, and the bottom surface of the fixing block is detachably connected to the top surface of the embedding block.

Images