A construction technology for foundation pit support and soil excavation adjacent to buildings

Abstract

The present invention relates to the technical field of foundation pit support and earth excavation, and specifically to a construction process for foundation pit support and earth excavation adjacent to buildings, including: steel lattice columns, with two steel lattice columns provided. A belt conveyor is inclined above the foundation pit support cross beam; an adjusting sleeve is movably sleeved on the outer side of the end of the extension shaft body, and the installation hanging plate is hung on the cross beam of the steel lattice column from top to bottom; a blanking pipe is fixedly connected to the lower end of one side of the earthwork hopper, and the blanking pipe is directly above the lower end of the belt conveyor; The beneficial effects are as follows: By pre-setting steel lattice columns and foundation pit support cross beams in the foundation pit, a belt conveyor is inclined above the foundation pit support cross beam and the upper end of the belt conveyor extends above the road. The excavator enters the foundation pit for excavation, and the excavated earthwork is poured into the earthwork hopper and conveyed by the belt conveyor and directly falls into the muck truck, thus effectively avoiding road blockage and affecting the construction progress.

Description

Technical Field

[0001] The present invention relates to the technical field of foundation pit support and earth excavation, and specifically relates to a construction technology for foundation pit support and earth excavation applicable to foundation pits adjacent to buildings. Background Technique

[0002] There are many methods for deep foundation pit support and earth excavation, and some of the methods are still in continuous development. Each foundation pit support has its own applicable conditions and certain limitations. Generally, long-arm excavators are used for foundation pit excavation, stacking, and then earth transfer.

[0003] At present, in some cases where the surrounding of the foundation pit is adjacent to buildings and the site is severely restricted (one side is a temporary construction road, and the other three sides are buildings that have been constructed), the long-arm excavator needs to be placed on the temporary road to excavate the foundation pit, and the excavated soil is stacked on the temporary road, which is likely to block the road and affect the overall construction progress. Therefore, the present invention proposes a construction technology for foundation pit support and earth excavation applicable to foundation pits adjacent to buildings to solve the above problems. Summary of the Invention

[0004] The purpose of the present invention is to provide a construction technology for foundation pit support and earth excavation applicable to foundation pits adjacent to buildings, so as to solve the problem that in the case where the surrounding of the foundation pit is adjacent to buildings, the excavator and the excavated soil are likely to block the road and affect the construction progress as mentioned in the above background technique.

[0005] To achieve the above purpose, the present invention provides the following technical solution: A foundation pit support applicable to adjacent buildings, including:

[0006] Steel lattice columns, there are two steel lattice columns, a foundation pit support cross beam is fixedly arranged between the upper ends of the two steel lattice columns, and a belt conveyor is obliquely arranged above the foundation pit support cross beam;

[0007] Extension shaft body, the extension shaft body is fixedly connected to the driving roller at the lower end of the belt conveyor, an adjusting sleeve is movably sleeved on the outer side of the end of the extension shaft body, and a mounting hanging plate is fixedly connected to the outer side wall of the adjusting sleeve, and the mounting hanging plate is suspended from the cross beam of the steel lattice column from top to bottom; and

[0008] Earth hopper, the earth hopper is installed between the two steel lattice columns, a feeding pipe is fixedly connected to the lower end of one side surface of the earth hopper, and the feeding pipe is directly above the lower end of the belt conveyor.

[0009] Preferably, a rotating bearing is sleeved on the outer side of the end of the extension shaft body, the adjusting sleeve is movably sleeved on the outer side of the extension shaft body through the rotating bearing, and an adjusting stud is movably inserted into the end of one of the adjusting sleeves through threads.

[0010] Preferably, one end of the adjusting stud is fixedly connected with a top block, the top block is located in the inner cavity of the adjusting sleeve and is adapted thereto, a ball is rotatably installed on the side surface of the top block, and the ball abuts against the end surface of the extension shaft body.

[0011] Preferably, two hanging buckles are fixedly connected to one side of the upper surface of the earthwork hopper, the hanging buckles are arranged in a "C" shape with the opening facing downwards, and the hanging buckles are buckled on the cross beam of the steel lattice column from top to bottom.

[0012] Preferably, the blanking pipe is inclined, an avoidance groove is formed on the upper surface of the lower end of the blanking pipe, and a gap is left between the lower end surface of the blanking pipe and the upper surface of the lower end of the belt conveyor.

[0013] Preferably, a plurality of support columns are fixedly connected to the upper surface of the foundation pit support cross beam and are distributed at equal intervals, the lengths of the plurality of support columns increase in sequence, and the tops of the support columns are fixedly connected to the support of the belt conveyor.

[0014] Preferably, a plurality of adjusting positioning holes are vertically arranged at equal intervals on the side surface of the support column, a sliding sleeve adapted thereto is sleeved outside the support column, and the sliding sleeve is fixed outside the support column through the cooperation of a fastening bolt and the adjusting positioning hole.

[0015] Preferably, a diagonal brace is arranged on one side of the sliding sleeve, and the upper and lower ends of the diagonal brace are respectively rotatably connected to the support of the belt conveyor and the side surface of the sliding sleeve through movable pin shafts.

[0016] Preferably, the upper end of the belt conveyor extends above the temporary road, a foundation pit enclosure formed by concrete pouring is arranged directly below the upper end of the belt conveyor, and the end of the foundation pit support cross beam is fixed to the side surface of the foundation pit enclosure.

[0017] A construction process for the excavation of the foundation pit support adjacent to a building according to the above, specifically comprising the following steps:

[0018] Step 1, measuring and setting out: Use a theodolite to make marks between the head and the tail of the belt conveyor, and then use a chalk line to snap lines point by point to connect the center lines between the head and the tail into a straight line to ensure high installation accuracy;

[0019] Step 2, setting the support structure: Pre-excavate a deep foundation pit, pour a concrete base in the foundation pit, install a steel lattice column on the concrete base, fix the foundation pit support cross beam between the upper ends of the two steel lattice columns, and connect the end of the foundation pit support cross beam to the foundation pit enclosure;

[0020] Step 3. Install the belt conveyor: The belt conveyor mainly consists of a driving motor, a speed reducer, a driving roller, a belt, and a support. The support of the belt conveyor is supported by support columns and reinforced by diagonal braces. The driving motor and the speed reducer are installed at the upper end of the belt conveyor for convenient later maintenance. When installing the belt conveyor, a spirit level is used for calibration to prevent the belt conveyor from tilting to the side.

[0021] Step 4. Earthwork excavation and soil removal: The excavator conducts earthwork excavation around the belt conveyor. The excavated soil is transported by the belt conveyor and falls into the muck truck on the road surface. After the muck truck is full, it drives away immediately. The excavator does not need to occupy the temporary road, thus avoiding road congestion and affecting the construction progress.

[0022] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0023] In the present invention, by pre-setting steel lattice columns and foundation pit support crossbeams in the foundation pit, a belt conveyor is inclined above the foundation pit support crossbeam and the upper end of the belt conveyor extends above the road, and an earthwork hopper is arranged above the lower end of the belt conveyor. The excavator enters the foundation pit for excavation, and the excavated soil is poured into the earthwork hopper and conveyed by the belt conveyor directly into the muck truck, thus effectively avoiding road congestion and affecting the construction progress. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is a schematic sectional view of the overall structure of the present invention;

[0025] Figure 2 is a schematic diagram of the relative positional relationship between the earthwork hopper and the belt conveyor of the present invention;

[0026] Figure 3 is the present invention Figure 1 Schematic enlarged view of the structure at A in;

[0027] Figure 4 is a three-dimensional schematic diagram of the earthwork hopper structure of the present invention;

[0028] Figure 5 is an exploded schematic diagram of a partial structure of the belt conveyor of the present invention.

[0029] In the figure: 1. Steel lattice column; 2. Foundation pit support crossbeam; 3. Belt conveyor; 4. Extension shaft body; 41. Rotating bearing; 5. Adjusting sleeve; 6. Installation hanging plate; 7. Adjusting stud; 8. Top block; 9. Earthwork hopper; 10. Feeding pipe; 11. Hanging buckle; 12. Avoidance groove; 13. Support column; 14. Diagonal brace; 15. Adjusting positioning hole; 16. Sliding sleeve; 17. Tightening bolt; 18. Movable pin shaft; 19. Foundation pit enclosure. DETAILED DESCRIPTION OF THE INVENTION

[0030] In order to clearly and completely describe the objectives and technical solutions of the present invention and make its advantages more clearly understood, the following further details the embodiments of the present invention with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are part of the embodiments of the present invention, rather than all of the embodiments, and are only used to explain the embodiments of the present invention, not to limit the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present invention.

[0031] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "middle", "upper", "lower", "left", "right", "inner", "outer", "top", "bottom", "side", "vertical", "horizontal", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention. In addition, the terms "one", "first", "second", "third", "fourth", "fifth", "sixth" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0032] In the description of the present invention, it should be noted that unless otherwise clearly specified and defined, the terms "installed", "connected", "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0033] For the purposes of simplicity and illustration, the principles of the embodiments are mainly described by reference to examples. In the following description, many specific details are set forth to provide a thorough understanding of the embodiments. However, it is obvious that for those of ordinary skill in the art, these embodiments may not be limited to these specific details in practice. In some instances, well-known methods and structures have not been described in detail to avoid unnecessarily obscuring these embodiments. Additionally, all embodiments can be used in combination with each other.

[0034] Please refer to Figures 1 to 5 , the present invention provides a technical solution:

[0035] Embodiment 1

[0036] A foundation pit support applicable to adjacent to a building, comprising: a steel lattice column 1, an extension shaft body 4, and an earth hopper 9.

[0037] Specifically, there are two steel lattice columns 1. A foundation pit support cross beam 2 is fixedly arranged between the upper ends of the two steel lattice columns 1. A belt conveyor 3 is obliquely arranged above the foundation pit support cross beam 2. The steel lattice columns 1 are installed in a pre-excavated foundation pit. The steel lattice columns 1 support the foundation pit support cross beam 2, and the foundation pit support cross beam 2 supports the belt conveyor 3 to ensure that the belt conveyor 3 can timely transport the soil during the later excavation;

[0038] Secondly, the extension shaft body 4 is fixedly connected to the driving roller at the lower end of the belt conveyor 3. An adjusting sleeve 5 is movably sleeved on the outer side of the end of the extension shaft body 4. A mounting hanging plate 6 is fixedly connected to the outer side wall of the adjusting sleeve 5. The mounting hanging plate 6 is suspended from the cross beam of the steel lattice column 1 from top to bottom. The adjusting sleeve 5 and the extension shaft body 4 can relatively slide a certain distance to adjust the installation position of the lower end of the belt conveyor 3, so as to ensure that the whole belt conveyor 3 is straight, thereby reducing the possibility of soil falling during soil transportation;

[0039] Furthermore, the soil hopper 9 is installed between the two steel lattice columns 1. A feeding pipe 10 is fixedly connected to the lower end of one side surface of the soil hopper 9. The feeding pipe 10 is located directly above the lower end of the belt conveyor 3. When the excavator excavates, the soil is poured into the inner cavity of the soil hopper 9. Under the action of gravity, the soil falls on the surface of the belt conveyor 3 through the feeding pipe 10 and is transported by the belt conveyor 3.

[0040] Embodiment Two

[0041] On the basis of Embodiment One, in order to adjust the position of the lower end of the belt conveyor 3, the present application also has a rotating bearing 41 sleeved on the outer side of the end of the extension shaft body 4. The adjusting sleeve 5 is movably sleeved on the outer side of the extension shaft body 4 through the rotating bearing 41. One end of an adjusting stud 7 is movably inserted into the end of the adjusting sleeve 5 through threads. One end of the adjusting stud 7 is fixedly connected to a top block 8. The top block 8 is located in the inner cavity of the adjusting sleeve 5 and is adapted to it. A ball is rotatably installed on the side surface of the top block 8. The ball abuts against the end face of the extension shaft body 4. By screwing the adjusting stud 7, the top block 8 is driven to slide along the length direction of the adjusting sleeve 5 in the inner cavity of the adjusting sleeve 5. After the top block 8 abuts against the end face of the extension shaft body 4, the extension shaft body 4 is driven to move, so that the position of the lower end of the belt conveyor 3 can be adjusted, thereby avoiding the lateral bending of the belt conveyor 3. In addition, when the extension shaft body 4 rotates, since a ball is arranged between the end of the extension shaft body 4 and the top block 8, the friction force received by the top block 8 can be reduced, thereby avoiding the rotation of the adjusting stud 7 and the displacement of the position of the top block 8.

[0042] Embodiment Three

[0043] On the basis of the second embodiment, in order to reduce the possibility of earthwork scattering, the present application further has two hanging buckles 11 fixedly connected to one side of the upper surface of the earthwork hopper 9. The hanging buckles 11 are arranged in a "C" shape with the opening facing downwards. The hanging buckles 11 are buckled on the cross beam of the steel lattice column 1 from top to bottom. Under the action of gravity, the earthwork hopper 9 can be suspended outside the steel lattice column 1. The feeding pipe 10 is inclined. An avoidance groove 12 is opened on the upper surface of the lower end of the feeding pipe 10. There is a gap between the lower end surface of the feeding pipe 10 and the upper surface of the lower end of the belt conveyor 3. The setting of the avoidance groove 12 ensures that the earthwork in the inner cavity of the feeding pipe 10 can move along the conveying direction of the belt conveyor 3 and reduces the possibility of earthwork scattering.

[0044] Embodiment Four

[0045] On the basis of the third embodiment, in order to support the middle part of the belt conveyor 3, the present application further has a plurality of support columns 13 fixedly connected to the upper surface of the foundation pit support cross beam 2 and distributed at equal intervals. The lengths of the plurality of support columns 13 increase in sequence. The top of the support column 13 is fixedly connected to the bracket of the belt conveyor 3. The support column 13 is used to support the middle part of the belt conveyor 3.

[0046] In addition, a plurality of adjustment positioning holes 15 are vertically distributed at equal intervals on the side surface of the support column 13. A sliding sleeve 16 adapted to it is sleeved outside the support column 13. The sliding sleeve 16 is fixed outside the support column 13 through the cooperation of a fastening bolt 17 and the adjustment positioning hole 15. After the fastening bolt 17 is loosened, the sliding sleeve 16 can slide up and down along the length direction of the support column 13, so as to adjust the height position of the sliding sleeve 16.

[0047] Embodiment Five

[0048] On the basis of the fourth embodiment, in order to further reinforce and support the belt conveyor 3, the present application further has an inclined strut 14 arranged on one side of the sliding sleeve 16. The upper and lower ends of the inclined strut 14 are respectively rotatably connected to the bracket of the belt conveyor 3 and the side surface of the sliding sleeve 16 through movable pins 18. The inclined strut 14 and the upper end part of the support column 13 form an isosceles triangle structure for further reinforcing and supporting the belt conveyor 3.

[0049] Embodiment Six

[0050] On the basis of Embodiment 5, in order to timely transport the earthwork, the upper end of the belt conveyor 3 is extended above the temporary road. A foundation pit enclosure 19 formed by pouring concrete is arranged directly below the upper end of the belt conveyor 3. The end of the foundation pit support cross beam 2 is fixed to the side surface of the foundation pit enclosure 19. The foundation pit enclosure 19 is pre-poured to protect the temporary road surface and the foundation pit, and prevent the road surface from collapsing caused by later excavation. When the excavator is excavating, the belt conveyor 3 transports the earthwork. The muck truck is located on the temporary road surface directly below the upper end of the belt conveyor 3. After the muck truck is filled, it can drive away immediately to avoid blocking the temporary road and affecting the construction progress.

[0051] A construction process for excavating the soil out of the foundation pit support adjacent to the building according to the above, specifically includes the following steps:

[0052] Step 1, measuring and setting out: Use a theodolite to make marks between the head and the tail of the belt conveyor 3, and then use a chalk line to snap lines point by point to connect the center lines between the head and the tail into a straight line to ensure high installation accuracy;

[0053] Step 2, setting up the support structure: Pre-excavate a deep foundation pit, pour a concrete base in the foundation pit, install the steel lattice column 1 on the concrete base, fix the foundation pit support cross beam 2 between the upper ends of the two steel lattice columns 1, and connect the end of the foundation pit support cross beam 2 to the foundation pit enclosure 19;

[0054] Step 3, installing the belt conveyor 3: The belt conveyor 3 is mainly composed of a driving motor, a reducer, a driving roller, a belt and a bracket. The bracket of the belt conveyor 3 is supported by the support columns 13 and reinforced by the diagonal braces 14. The driving motor and the reducer are installed at the upper end of the belt conveyor 3 for convenient later maintenance. When the belt conveyor 3 is installed, a level is used for calibration to prevent the belt conveyor 3 from tilting to the side;

[0055] Step 4, earth excavation and soil out: The excavator excavates the earthwork around the belt conveyor 3. The excavated earthwork is transported by the belt conveyor 3 and falls into the muck truck on the road surface. After the muck truck is filled, it drives away immediately. The excavator does not need to occupy the temporary road, thus avoiding road congestion and affecting the construction progress.

[0056] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirits of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A foundation pit support applicable to the vicinity of a building, characterized in that: Including: Steel lattice columns (1), two of the steel lattice columns (1) are provided, a foundation pit support cross beam (2) is fixedly arranged between the upper ends of the two steel lattice columns (1), and a belt conveyor (3) is obliquely arranged above the foundation pit support cross beam (2); An extension shaft body (4), the extension shaft body (4) is fixedly connected to the driving roller at the lower end of the belt conveyor (3), an adjusting sleeve (5) is movably sleeved on the outer side of the end of the extension shaft body (4), a mounting hanging plate (6) is fixedly connected to the outer side wall of the adjusting sleeve (5), and the mounting hanging plate (6) is hung on the cross beam of the steel lattice column (1) from top to bottom; and An earthwork hopper (9), the earthwork hopper (9) is installed between the two steel lattice columns (1), a blanking pipe (10) is fixedly connected to the lower end of one side surface of the earthwork hopper (9), and the blanking pipe (10) is located directly above the lower end of the belt conveyor (3); A rotating bearing (41) is sleeved on the outer side of the end of the extension shaft body (4), the adjusting sleeve (5) is movably sleeved on the outer side of the extension shaft body (4) through the rotating bearing (41), and one end of the adjusting sleeve (5) is movably inserted with an adjusting stud (7) through a thread; One end of the adjusting stud (7) is fixedly connected with a top block (8), the top block (8) is located in the inner cavity of the adjusting sleeve (5) and is adapted to it, a ball is rotatably installed on the side surface of the top block (8), and the ball abuts against the end surface of the extension shaft body (4); The upper end of the belt conveyor (3) extends above the temporary road, a foundation pit enclosure (19) formed by concrete pouring is arranged directly below the upper end of the belt conveyor (3), and the end of the foundation pit support cross beam (2) is fixed to the side surface of the foundation pit enclosure (19).

2. The foundation pit support applicable to the area adjacent to a building according to claim 1, characterized in that: Two hanging buckles (11) are fixedly connected to one side of the upper surface of the earthwork hopper (9), the hanging buckles (11) are arranged in a "C" shape with the opening downward, and the hanging buckles (11) are buckled on the cross beam of the steel lattice column (1) from top to bottom.

3. A foundation pit support applicable to a building adjacent to a building according to claim 2, characterized in that: The blanking pipe (10) is obliquely arranged, an avoidance groove (12) is opened on the upper surface of the lower end of the blanking pipe (10), and a gap is left between the lower end surface of the blanking pipe (10) and the upper surface of the lower end of the belt conveyor (3).

4. A foundation pit support applicable to a foundation pit adjacent to a building according to claim 3, characterized in that: A plurality of support columns (13) evenly distributed at equal intervals are fixedly connected to the upper surface of the foundation pit support cross beam (2), the lengths of the plurality of support columns (13) increase in sequence, and the top of the support column (13) is fixedly connected to the support of the belt conveyor (3).

5. A foundation pit support applicable to a foundation pit adjacent to a building according to claim 4, characterized in that: A plurality of adjusting positioning holes (15) vertically distributed at equal intervals are opened on the side surface of the support column (13), a sliding sleeve (16) adapted to it is sleeved on the outer side of the support column (13), and the sliding sleeve (16) is fixed on the outer side of the support column (13) through the cooperation of a fastening bolt (17) and the adjusting positioning hole (15).

6. The foundation pit support applicable to the area adjacent to a building according to claim 5, characterized in that: An inclined strut (14) is arranged on one side of the sliding sleeve (16), and the upper and lower ends of the inclined strut (14) are respectively rotatably connected to the support of the belt conveyor (3) and the side surface of the sliding sleeve (16) through movable pin shafts (18).

7. A construction process for excavating soil for the foundation pit support adjacent to a building according to claim 6, characterized in that: Specifically, it includes the following steps: Step 1. Measuring and setting out: Use a theodolite to make marks between the head and the tail of the belt conveyor (3), and then use an ink box to snap lines point by point to connect the center lines between the head and the tail into a straight line to ensure high installation accuracy; Step 2. Setting up the support structure: Pre-excavate a deep foundation pit, pour a concrete base in the foundation pit, install a steel lattice column (1) on the concrete base, fix the foundation pit support cross beam (2) between the upper ends of the two steel lattice columns (1), and connect the end of the foundation pit support cross beam (2) to the foundation pit enclosure (19); Step 3. Installing the belt conveyor (3): The belt conveyor (3) mainly consists of a driving motor, a reducer, a driving drum, a belt and a support. The support of the belt conveyor (3) is supported by support columns (13) and reinforced by diagonal braces (14). The driving motor and the reducer are installed at the upper end of the belt conveyor (3) for convenient later maintenance. The belt conveyor (3) is calibrated with a level during installation to prevent the belt conveyor (3) from tilting to the side; Step 4. Earth excavation and soil removal: Use an excavator to carry out earth excavation around the belt conveyor (3). The excavated soil is transported by the belt conveyor (3) and falls into the muck truck on the road surface. The muck truck drives away immediately after being filled. The excavator does not need to occupy the temporary road, thus avoiding road congestion and affecting the construction progress.

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