Deep foundation pit supporting structure

Abstract

The utility model belongs to the technical field of deep foundation pit supporting, and particularly relates to a deep foundation pit supporting structure which comprises a protective plate, two hinge arms are fixedly connected to one side of the protective plate, two fixing plates are arranged on one side of the protective plate, the hinge arms are hinged to the inner sides of the fixing plates, a connecting plate is fixedly connected between the two fixing plates, and the connecting plate is fixedly connected with the protective plate. A first threaded rod is in threaded connection with the middle of the connecting plate, a hinge seat is arranged on one side of the protective plate, one end of the first threaded rod is rotatably connected with the hinge seat, and a stretching assembly is slidably mounted in the protective plate; through cooperation of a hinge arm, a fixing plate, a telescopic assembly and other parts, when a constructor carries out installation and use, the device can be adaptively adjusted according to the actual depth of a foundation pit and the inclination angle of the side wall, the overall applicability of the device is improved, it can be guaranteed that a protection plate is always attached to the side wall of the foundation pit, and the construction efficiency is improved. And a soil layer on the side wall of the foundation pit is stably supported, so that the overall supporting effect of the device can be ensured.

Description

Technical Field

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

[0002] A deep foundation pit refers to a project with an excavation depth of more than 5 meters (including 5 meters), or a project with a depth of less than 5 meters but particularly complex geological conditions, surrounding environment and underground pipelines. In order to prevent the soil near the foundation pit from loosening and endangering the normal use of adjacent buildings, roads and underground facilities, as well as to ensure that the underground structure and construction personnel are not damaged, temporary support structures will be densely arranged on the side walls of the deep foundation pit. However, in the actual construction process, due to the different depths of the foundation pit and the inclination angles of the side walls, the existing support structures are not convenient to adjust and adapt according to the actual conditions of the foundation pit during installation. When there is a gap between the support structure and the side wall of the foundation pit and they cannot remain close, the support effect will be affected. Summary of the invention

[0003] The utility model provides a deep foundation pit supporting structure, which is convenient for construction workers to make adaptive adjustments according to the actual depth of the foundation pit and the inclination angle of the side wall, thereby ensuring the overall supporting effect of the device.

[0004] The utility model provides the following technical solution: it includes a guard plate, two hinged arms are fixedly connected to one side of the guard plate, two fixed plates are provided on one side of the guard plate, the hinged arms are hinged to the inner sides of the fixed plates, a connecting plate is fixedly connected between the two fixed plates, a first threaded rod is threadedly connected to the middle part of the connecting plate, a hinge seat is provided on one side of the guard plate, one end of the first threaded rod is rotatably connected to the hinge seat, and an extension component is slidably installed inside the guard plate.

[0005] Among them, a guide seat is fixedly connected to one side of the guard plate, a mounting groove is opened inside the guide seat, a guide rod is fixedly connected in the mounting groove, and the hinge seat is slidably connected to the outer side of the guide rod.

[0006] Among them, the extension assembly includes an extension plate, a second threaded rod, and an adjustment handle. The extension plate slides inside the guard plate, the second threaded rod is threadedly connected to the extension plate, the adjustment handle is rotatably connected to the inside of the guard plate, and one end of the second threaded rod is fixedly connected to the adjustment handle.

[0007] A slide groove is provided inside the guard plate, the extension plate is slidably connected to the inner side of the slide groove, and a plurality of fixing piles are provided at the bottom end of the extension plate.

[0008] Among them, one end of the fixing plate is fixedly connected to a fixing seat, and the inner side of the fixing seat is movably connected to a fixing nail.

[0009] The beneficial effect of the utility model is that through the coordination of the articulated arm, the fixed plate, the telescopic assembly and other components, the construction personnel can adapt and adjust the device according to the actual depth of the foundation pit and the inclination angle of the side wall during installation and use, thereby improving the overall applicability of the device, ensuring that the guard plate always remains in contact with the side wall of the foundation pit, providing stable support for the soil layer of the side wall of the foundation pit, thereby ensuring the overall support effect of the device.

[0010] The parts not involved in the device are the same as those in the prior art or can be implemented by using the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a three-dimensional structural schematic diagram of the utility model.

[0012] Figure 2 It is a front view cross-sectional structural schematic diagram of the utility model.

[0013] Figure 3 It is a schematic diagram of the side cross-sectional structure of the middle guard plate and the extension plate of the utility model.

[0014] Figure 4 It is a schematic diagram of the cross-sectional structure of the fixing plate in the utility model.

[0015] In the figure: 1. guard plate; 11. articulated arm; 111. slide groove; 2. fixed plate; 21. connecting plate; 211. fixed seat; 212. fixing nail; 22. first threaded rod; 23. articulated seat; 24. guide seat; 241. mounting groove; 242. guide rod; 3. extension assembly; 31. extension plate; 311. fixed pile; 32. second threaded rod; 33. adjustment handle. Implementation

[0016] See also Figure 1-Figure 4 The utility model provides the following technical solutions: it includes a guard plate 1, one side of the guard plate 1 is fixedly connected to two hinged arms 11, one side of the guard plate 1 is provided with two fixed plates 2, the hinged arms 11 are hinged to the inner sides of the fixed plates 2, a connecting plate 21 is fixedly connected between the two fixed plates 2, a first threaded rod 22 is threadedly connected to the middle part of the connecting plate 21, a hinge seat 23 is provided on one side of the guard plate 1, one end of the first threaded rod 22 is rotatably connected to the hinge seat 23, and an extension component 3 is slidably installed inside the guard plate 1.

[0017] In this embodiment: the guard plate 1 is a component for supporting the soil on the side wall of the foundation pit, which is mainly used to prevent the side wall of the foundation pit from collapsing and play a role in ensuring the stability of the foundation pit. The guard plate 1 is connected to the fixed plate 2 through two hinged arms 11 fixed on one side thereof. The hinged arms 11 cooperate with the fixed plate 2 so that the guard plate 1 as a whole can rotate around the hinge axis of the hinged arm 11 as the center, so that the guard plate 1 as a whole can be adjusted according to the actual inclination angle of the side wall of the foundation pit to fit the side wall of the foundation pit, thereby ensuring that the guard plate 1 supports the side wall of the foundation pit. The fixing plate 2 can be fixed on the ground at one side of the foundation pit, and is mainly used to provide support for the upper part of the guard plate 1. A threaded hole is provided in the middle of the connecting plate 21 fixedly connected between the two fixing plates 2. The first threaded rod 22 is threadedly connected to the inner side of the threaded hole of the connecting plate 21. A control handle is installed at one end of the first threaded rod 22, and the other end of the first threaded rod 22 is hinged to the hinge seat 23. When the construction personnel control the first threaded rod 22 to rotate, under the action of the threaded hole in the middle of the connecting plate 21, the first threaded rod 22 can The guard plate 1 is capable of horizontal movement, and can drive the guard plate 1 to rotate slightly around the rotation axis of the hinged arm 11 through the hinged seat 23 provided on one side of the guard plate 1, so as to facilitate the construction personnel to control and adjust the overall inclination angle of the guard plate 1. The extension component 3 slides vertically inside the guard plate 1. The construction personnel control the extension component 3 to slide downward from the inside of the guard plate 1 and contact the bottom of the pit, so as to increase the supporting area of ​​the soil on the side wall of the foundation pit, so as to facilitate the construction personnel to adjust according to the actual depth of the foundation pit, so as to adapt the support to the foundation pits of different depths. When using it, the construction personnel first place the device as a whole on both sides of the foundation pit, and fix the bottom end of the fixed plate 2 to the ground on one side of the foundation pit. Then, the construction personnel drive the first threaded rod 22 to rotate through the control handle connected to one end of the first threaded rod 22, so as to drive the guard plate 1 to complete the rotation adjustment around the hinged end of the hinged arm 11, so that the guard plate 1 rotates and adjusts to keep in contact with the side wall of the foundation pit. At this time, the construction personnel can control the extension component 3 to slide downward and complete the connection with the ground, and the installation of the device as a whole can be completed.

[0018] A guide seat 24 is fixedly connected to one side of the guard plate 1, and a mounting groove 241 is provided inside the guide seat 24, and a guide rod 242 is fixedly connected inside the mounting groove 241, and the hinge seat 23 is slidably connected to the outer side of the guide rod 242; the mounting groove 241 provides a mounting surface for the guide rod 242, and can also provide a sliding space for the hinge seat 23, and the guide rod 242 is used to assist in guiding the horizontal sliding of the hinge seat 23 on the inner side of the mounting groove 241. When the construction personnel drive the first threaded rod 22 to rotate by controlling the handle, the first threaded rod 22 can apply a certain thrust or pull to the guard plate 1 through the hinge seat 23 and the guide seat 24 while performing horizontal movement, so that the guard plate 1 can be rotated and adjusted around the hinge axis of the hinge arm 11. During the rotation of the guard plate 1, the hinge seat 23 and the guide seat 24 will rotate synchronously with the guard plate 1, and at this time, the hinge seat 23 can slide in the guide seat 24 along the outer side of the guide rod 242, so that the guard plate 1 can complete the adjustment of the inclination.

[0019] The extension assembly 3 includes an extension plate 31, a second threaded rod 32, and an adjustment handle 33. The extension plate 31 slides inside the guard plate 1, the second threaded rod 32 is threadedly connected to the extension plate 31, the adjustment handle 33 is rotatably connected to the inside of the guard plate 1, and one end of the second threaded rod 32 is fixedly connected to the adjustment handle 33; a thread groove that matches the outer thread of the second threaded rod 32 is opened inside the extension plate 31, and the second threaded rod 32 is threadedly connected to the thread groove inside the extension plate 31. Since the second threaded rod 32 is fixedly connected to the bottom end of the adjustment handle 33, when the construction personnel control the adjustment inside the guard plate 1 When the handle 33 is rotated, the second threaded rod 32 can rotate synchronously with the adjusting handle 33. Under the action of the thread, the second threaded rod 32 can drive the extension plate 31 to slide vertically on the inside of the slide groove 111, so that the construction personnel can control the extension plate 31 to slide downward and connect with the foundation pit ground by rotating the adjusting handle 33. Through the cooperation between the second threaded rod 32 and the adjusting handle 33, the construction personnel can adjust the extension plate 31 downward to contact the bottom of the pit according to the depth of the foundation pit, so that the overall device can be adapted and installed for foundation pits of different depths.

[0020] A slide groove 111 is provided inside the guard plate 1, and the extension plate 31 is slidably connected to the inner side of the slide groove 111, and a plurality of fixed piles 311 are provided at the bottom end of the extension plate 31; the slide groove 111 is used to provide a space for the extension plate 31 to slide vertically, and a plurality of fixed piles 311 are fixed to the bottom end of the extension plate 31. Therefore, when the construction personnel adjust the guard plate 1 to fit the side wall of the foundation pit, the extension plate 31 is controlled to slide downward on the inside of the slide groove 111, which can drive the plurality of fixed piles 311 to be inserted into the ground at the bottom of the pit. After being inserted into the ground, the plurality of fixed piles 311 can jointly provide stable support for the lower part of the extension plate 31, thereby ensuring the support effect for the side wall of the foundation pit.

[0021] One end of the fixing plate 2 is fixedly connected to a fixing seat 211, and a fixing nail 212 is movably connected to the inner side of the fixing seat 211; a through hole with a size consistent with the fixing nail 212 is opened in the middle of the fixing seat 211, and the fixing seat 211 cooperates with the fixing nail 212 to fit the fixing plate 2 on the ground on one side of the foundation pit, so that the fixing plate 2 can provide stable support for the upper part of the guard plate 1, thereby ensuring the support effect on the side wall of the foundation pit.

[0022] The working principle and use process of the utility model are as follows: when using it, the construction personnel first place the device as a whole on both sides of the foundation pit so that the bottom end of the fixing plate 2 can fit with the ground on one side of the foundation pit, and then put the fixing nails 212 into the inner side of the fixing seat 211 in turn and wedge the tip of the fixing nail into the ground to fix the fixing plate 2. Then the construction personnel drive the first threaded rod 22 to rotate through the control handle connected to one end of the first threaded rod 22. Since the first threaded rod 22 is threadedly connected to the middle part of the connecting plate 21, when the first threaded rod 22 rotates, it can move along the direction of the thread under the action of the thread to complete the horizontal sliding. At this time, the first threaded rod 22 can apply a certain thrust or pulling force to the guard plate 1 through the hinge seat 23 and the guide seat 24, so that the hinge seat 23 can slide up and down inside the guide seat 24, and drive the guard plate 1 to complete the rotation adjustment with the hinge end of the hinged arm 11 as the center. The second threaded rod 32 rotates synchronously with the adjusting handle 33, and the extension plate 31 can be driven to slide vertically on the inner side of the slide groove 111 under the action of the thread. The construction personnel control the extension plate 31 to slide downward by continuously rotating the adjusting handle 33 until several fixed piles 311 are fully inserted into the ground of the foundation pit. At this time, the installation of the entire device can be completed. Through the cooperation of the articulated arm 11, the fixed plate 2, the telescopic assembly 3 and other components, the construction personnel can adapt and adjust the device according to the actual depth of the foundation pit and the inclination angle of the side wall during installation and use, thereby improving the overall applicability of the device, ensuring that the guard plate 1 always keeps in contact with the side wall of the foundation pit, and providing stable support for the soil layer of the side wall of the foundation pit, thereby ensuring the overall support effect of the device.

Claims

1. A deep foundation pit support structure, comprising a guard plate (1), characterized in that: One side of the guard plate (1) is fixedly connected to two hinged arms (11), one side of the guard plate (1) is provided with two fixed plates (2), the hinged arms (11) are hinged to the inner sides of the fixed plates (2), a connecting plate (21) is fixedly connected between the two fixed plates (2), a first threaded rod (22) is threadedly connected to the middle of the connecting plate (21), one side of the guard plate (1) is provided with a hinge seat (23), one end of the first threaded rod (22) is rotatably connected to the hinge seat (23), and an extension assembly (3) is slidably installed inside the guard plate (1).

2. A deep foundation pit support structure according to claim 1, characterized in that: A guide seat (24) is fixedly connected to one side of the guard plate (1), a mounting groove (241) is provided inside the guide seat (24), a guide rod (242) is fixedly connected inside the mounting groove (241), and the hinge seat (23) is slidably connected to the outside of the guide rod (242).

3. A deep foundation pit support structure according to claim 1, characterized in that: The extension assembly (3) comprises an extension plate (31), a second threaded rod (32), and an adjustment handle (33); the extension plate (31) slides inside the guard plate (1); the second threaded rod (32) is threadedly connected to the extension plate (31); the adjustment handle (33) is rotatably connected to the inside of the guard plate (1); and one end of the second threaded rod (32) is fixedly connected to the adjustment handle (33).

4. A deep foundation pit support structure according to claim 3, characterized in that: A sliding groove (111) is provided inside the guard plate (1), the extension plate (31) is slidably connected to the inner side of the sliding groove (111), and a plurality of fixing piles (311) are provided at the bottom end of the extension plate (31).

5. A deep foundation pit support structure according to claim 1, characterized in that: One end of the fixing plate (2) is fixedly connected to a fixing seat (211), and the inner side of the fixing seat (211) is movably connected to a fixing nail (212).

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