Miniature pile foundation construction equipment suitable for narrow space

Abstract

The utility model relates to the technical field of pile foundation construction equipment, in particular to miniature pile foundation construction equipment suitable for a narrow space. According to the technical scheme, a positioning frame is included, a plurality of pouring formworks are arranged on the inner side of the positioning frame, a lining support is arranged on the inner sides of the pouring formworks, the lining support comprises a plurality of lining plates, a plurality of steel bar penetrating holes are formed in the lining plates, and pouring openings are formed in the lining plates. Lining supporting is carried out on the pouring formwork through the lining support, it is ensured that the pouring formwork can be stably attached to the inner wall of a foundation pit, a large number of steel bars are inserted into the lining support in a penetrating mode, operation is convenient, and the lining support can be used as reinforcing ribs in the pile foundation pouring process; the problem that the reinforcement cage is easily blocked by soil on the inner wall of a foundation pit when being inserted can be solved, the lining support and the inserted reinforcing steel bars are adopted to replace a traditional reinforcement cage, and on the premise that firmness and reliability of a formed pile foundation are guaranteed, convenience of pile foundation pouring construction is effectively improved.

Description

Technical Field

[0001] This utility model relates to the field of pile foundation construction equipment technology, and in particular to a micro pile foundation construction equipment suitable for confined spaces. Background Technology

[0002] A pile foundation is a type of deep foundation structure that uses the skin friction and end resistance of the piles to bear the load of the building. It is mainly used when the bearing capacity of the foundation is insufficient or when the building has high requirements for settlement control. It can effectively improve the bearing capacity and stability of the foundation and reduce the settlement and uneven settlement of the building.

[0003] During pile foundation construction, a foundation pit needs to be dug in the soil first, then a steel cage is placed into the foundation pit, and concrete is poured into the foundation pit. The steel cage acts as an inner lining and reinforcing structure for the concrete, which can improve the stability of the pile foundation structure after the concrete has solidified.

[0004] However, in actual construction, when it is necessary to pour pile foundations in deep foundation pits in narrow spaces, the steel cage is prone to contact with the inner wall of the foundation pit during the placement of the steel cage, which causes the soil on the inner wall of the foundation pit to be scraped off. If a large amount of fallen soil accumulates at the bottom of the foundation pit, it will obstruct the steel cage, resulting in the steel cage not being able to be completely placed into the foundation pit, which significantly increases the difficulty of pile foundation construction. Therefore, this application proposes a micro pile foundation construction device suitable for narrow spaces that can facilitate the installation of the inner lining reinforcement structure of the pile foundation. Utility Model Content

[0005] The purpose of this invention is to address the problem in the prior art where soil is easily scraped off when the reinforcing cage is placed into the foundation pit, making it difficult to completely place the reinforcing cage into the foundation pit. The invention proposes a micro-pile foundation construction device suitable for confined spaces that can facilitate the installation of the pile foundation lining reinforcement structure.

[0006] The technical solution of this utility model: A micro-pile foundation construction device suitable for confined spaces, comprising a positioning frame, wherein the inner side of the positioning frame is provided with several casting templates, characterized in that it further comprises:

[0007] The inner lining support is disposed inside several casting templates. The inner lining support includes several inner lining plates, which are disposed inside several casting templates. Several connecting rods are fixedly installed between two adjacent inner lining plates.

[0008] The reinforcing bars are perforated, and the perforations are set in the inner lining plate, which has a casting port.

[0009] Optionally, the positioning frame includes a first sleeper and a second sleeper, the first sleeper being disposed on the outer wall of a matching casting template, and the second sleeper being fixed to the bottom of the matching first sleeper.

[0010] Optionally, the first sleeper has a positioning hole, and the top of the second sleeper is fixedly installed with a locking screw. The top end of the locking screw passes through the matching positioning hole and is movably connected to it. The top end of the locking screw is threaded with a limit nut, and the limit nut presses against the upper surface of the matching first sleeper.

[0011] Optionally, the inner lining plate has several arc-shaped openings, which are arranged in a ring around the outside of the pouring opening.

[0012] Optionally, a long strip-shaped limiting groove is chiseled on the inner side wall of the casting template, and a limiting block is fixedly installed on the outer side wall of the inner lining plate. One end of the limiting block is inserted into the matching long strip-shaped limiting groove and slidably connected to it.

[0013] Optionally, a frame fixing plate is fixedly installed on the outer side wall of the second sleeper, and the frame fixing plate has several circular perforations.

[0014] Compared with the prior art, this application includes at least one of the following beneficial technical effects: This utility model provides inner lining support for the casting template through an inner lining bracket, ensuring that the casting template can be stably attached to the inner wall of the foundation pit. A large number of steel bars are inserted on the inner lining bracket, which is convenient for operation and can be used as reinforcing bars during pile foundation casting. For deep foundation pits in narrow areas, it can solve the problem that the steel cage is easily obstructed by the soil on the inner wall of the foundation pit when it is inserted. By using an inner lining bracket and inserted steel bars to replace the traditional steel cage, the convenience of pile foundation casting construction is effectively improved while ensuring that the pile foundation is firm and reliable after it is formed. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the positioning frame assembly of this utility model;

[0017] Figure 3 This is a schematic diagram of the inner lining support structure of this utility model;

[0018] Figure 4 This is a schematic diagram of the inner lining plate structure of this utility model;

[0019] Figure 5 This utility model Figure 1 An enlarged diagram of A in the diagram.

[0020] Reference numerals: 1. Positioning frame;

[0021] 11. First sleeper; 111. Positioning hole;

[0022] 12. Second sleeper; 121. Locking screw; 122. Limit nut;

[0023] 2. Inner lining support;

[0024] 21. Inner lining plate; 211. Pouring port; 212. Arc-shaped opening; 213. Reinforcing bar perforation; 214. Limiting block;

[0025] 22. Connecting rod;

[0026] 3. Frame fixing plate; 31. Circular perforation;

[0027] 4. Casting template; 41. Long strip-shaped limiting groove. Detailed Implementation

[0028] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments. Example

[0029] like Figure 1 , Figure 3 and Figure 4 As shown, this utility model proposes a micro-pile foundation construction device suitable for confined spaces, including a positioning frame 1. The positioning frame 1 has several casting templates 4 on its inner side. These casting templates 4 are spliced ​​end-to-end to form a U-shaped structure. The casting templates 4 cover and support the inner wall of the foundation pit, preventing soil from falling into the inner lining area of ​​the casting templates 4 and reducing the risk of foundation pit collapse. The inner side of the casting templates 4 is provided with an inner lining support 2, which provides stable support to the inner wall of the casting templates 4, improving the stability of the casting templates 4 after installation. The inner lining support 2 consists of several inner lining plates 21 and connecting rods 22. Several connecting rods 22 are fixedly installed between adjacent inner lining plates 21, ensuring that the multiple inner lining plates 21 can be firmly connected as a whole. This ensures the overall structural integrity of the inner lining support 2. Several steel bar through-holes 213 are drilled in the inner lining plate 21. After the inner lining support 2 is placed into the inner lining section of the casting template 4, a large number of steel bars are passed through the steel bar through-holes 213, connecting them to the inner lining support 2 as a whole. A pouring port 211 is drilled in the inner lining plate 21. After the steel bars are installed, concrete is poured in through the pouring port 211. The pouring operation stops when the inner section of the casting template 4 is filled with concrete. At this time, the inner lining support 2 and a large number of steel bars are used as reinforcing bars during pile foundation pouring, replacing the traditional steel cage. After the concrete solidifies, it ensures the structural integrity of the pile foundation. The inner lining support 2 and steel bars are simple to install and easy to place into the deep foundation pit, effectively improving the convenience of pile foundation pouring construction.

[0030] like Figure 2 As shown, to improve the stability of the positioning frame 1 after installation, two first sleepers 11 and two second sleepers 12 are spliced ​​end to end. The bottom of the first sleepers 11 and the top of the second sleepers 12 are both provided with cutting parts. When the first sleepers 11 and the second sleepers 12 are joined together, the interlocking of the cutting parts can provide a strong connection between the sleepers. The top of the second sleeper 12 is fixedly installed with a locking screw 121. The first sleeper 11 has a positioning hole 111. After the locking screw 121 passes through the matching positioning hole 111, a limit nut 122 is threaded onto the top of the locking screw 121. By rotating the limit nut 122 downward and making it in close contact with the upper surface of the first sleeper 11, the first sleeper 11 can be locked and fixed onto the second sleeper 12, ensuring that the first sleeper 11 and the second sleeper 12 are firmly connected as one, which effectively improves the stability of the positioning frame 1 after installation.

[0031] Secondly, after the pile foundation is formed, the positioning frame 1 needs to be dismantled. At this time, the limiting nut 122 is removed to release the locking and fixing of the first sleeper 11, and the first sleeper 11 can be removed, which improves the convenience of disassembling and assembling the positioning frame 1. When the positioning frame 1 is disassembled into multiple independent structures, it is convenient to carry and transport it, and it is suitable for on-site assembly.

[0032] like Figure 4 As shown, in order to make the concrete and the inner lining plate 21 integrally formed, several arc-shaped openings 212 are chiseled on the inner lining plate 21. The arc-shaped openings 212 are distributed in a ring on the outside of the pouring port 211. When the inner lining section of the pouring template 4 is filled with concrete, some concrete enters the inner section of the arc-shaped openings 212. After the concrete has solidified, it can be more firmly interlocked with the inner lining plate 21, which improves the firmness of the connection between the inner lining support 2 and the concrete.

[0033] like Figure 1 , Figure 4 and Figure 5 As shown, in order to reduce the difficulty of installing the inner lining support 2, a long strip-shaped limiting groove 41 is chiseled on the inner side wall of the casting template 4, and a limiting block 214 is fixedly installed on the outer side wall of the inner lining plate 21. When the inner lining support 2 needs to be placed into the foundation pit, the limiting block 214 is aligned with the long strip-shaped limiting groove 41, and the inner lining support 2 is slowly lowered. During this process, the limiting block 214 slides down along the long strip-shaped limiting groove 41, which not only provides inner lining support for the casting template 4, but also facilitates its placement and installation.

[0034] like Figure 1As shown, in order to improve the stability of the positioning frame 1 after installation, a frame fixing plate 3 is fixedly installed on the outer side wall of the second sleeper 12. Several circular perforations 31 are drilled on the frame fixing plate 3. After the positioning frame 1 covers the ground around the pit opening, the insertion rod is inserted into the circular perforations 31 and its end is inserted into the soil layer. Then the second sleeper 12 can be positioned to ensure that the positioning frame 1 can be firmly installed on the ground. Then the soil around the pit opening is covered to reduce the probability of soil falling into the pit.

[0035] In this embodiment, the first sleeper 11 and the second sleeper 12 are first assembled together. The locking screw 121 and the limiting nut 122 work together to ensure a firm connection between the first sleeper 11 and the second sleeper 12, improving the structural stability of the assembled positioning frame 1. The positioning frame 1 is then placed on the ground around the pit opening. By pressing the soil with the positioning frame 1, the probability of soil falling into the pit is reduced. Next, the second sleeper 12 is fixed with stakes to ensure that the positioning frame 1 is firmly installed at the pit opening. After the positioning frame 1 is fixed, the casting template 4 is placed into the foundation pit. The top of the multiple casting templates 4 is limited by the positioning frame 1. Then, the inner lining support 2 is placed into the foundation pit. At this time, the limiting block 214 is limited in the horizontal direction by the long strip limiting groove 41, ensuring that the inner lining support 2 can fall stably into the foundation pit, which improves the convenience of the installation of the inner lining support 2. The inner lining support is provided by multiple inner lining plates 21 on the inner side of the casting template 4, ensuring that the casting template 4 can be tightly attached to the inner wall of the foundation pit, effectively reducing the risk of foundation pit collapse.

[0036] After the inner lining support 2 is installed, a large number of steel bars are passed through the steel bar through holes 213 to ensure that the steel bars can be connected with the inner lining support 2 as a whole, and the two constitute the internal reinforcement structure of the concrete. After the steel bars are inserted and installed, concrete is poured into the foundation pit from the pouring port 211. When the inner section of the pouring formwork 4 is filled with concrete, the pouring operation is stopped. After the concrete has solidified, the inner lining support 2 and a large number of steel bars can improve the stability of the pile foundation structure. The inner lining structure composed of inner lining support 2 and steel bars replaces the traditional steel cage, which can solve the problem that the steel cage is easily blocked by the soil on the inner wall of the foundation pit when it is put into the foundation pit, and also reduces the probability of the soil on the inner wall of the foundation pit being scraped off, effectively improving the convenience of pile foundation pouring construction.

[0037] The above specific embodiments are merely several optional embodiments of this utility model. Based on the technical solution of this utility model and the relevant teachings of the above embodiments, those skilled in the art can make various alternative improvements and combinations to the above specific embodiments.

Claims

1. A micro-pile foundation construction equipment suitable for narrow space, comprising a positioning frame (1), a plurality of pouring forms (4) are arranged inside the positioning frame (1), characterized in that, Also include: The inner lining support (2) is arranged in the inner side of the pouring formwork (4), the inner lining support (2) includes a plurality of inner lining plates (21), the inner lining plate (21) is arranged in the inner side of a plurality of pouring formworks (4), and a plurality of connecting rods (22) are fixedly installed between two adjacent inner lining plates (21); The steel bar perforation (213) is arranged on the inner lining plate (21), and the inner lining plate (21) is drilled with a pouring opening (211).

2. A micropile foundation construction apparatus suitable for use in tight spaces according to claim 1, characterized in that, The positioning frame (1) includes a first sleeper (11) and a second sleeper (12), the first sleeper (11) is arranged at the outer side wall of the matching pouring formwork (4), and the second sleeper (12) is fixed at the bottom of the matching first sleeper (11).

3. A micropile foundation construction apparatus suitable for use in tight spaces according to claim 2, characterized in that, The first sleeper (11) is drilled with a positioning hole (111), the top of the second sleeper (12) is fixedly installed with a locking screw (121), the top end of the locking screw (121) penetrates through the matching positioning hole (111) and is movably connected with the same, the top end of the locking screw (121) is threadedly installed with a limiting nut (122), and the limiting nut (122) is pressed on the upper surface of the matching first sleeper (11).

4. The micro-pile foundation construction equipment for narrow space according to claim 1, characterized in that, The inner lining plate (21) is drilled with a plurality of arc-shaped openings (212), and a plurality of arc-shaped openings (212) are annularly distributed on the outer side of the pouring opening (211).

5. A micropile foundation construction apparatus suitable for use in tight spaces according to claim 4, characterized in that, The inner side wall of the pouring formwork (4) is drilled with a long strip-shaped limiting groove (41), and the outer side wall of the inner lining plate (21) is fixedly installed with a limiting block (214), one end of the limiting block (214) is inserted into the matching long strip-shaped limiting groove (41) and is slidably connected with the same.

6. A micropile foundation construction apparatus suitable for use in tight spaces according to claim 3, wherein, The outer side wall of the second sleeper (12) is fixedly installed with a frame fixing plate (3), and the frame fixing plate (3) is drilled with a plurality of circular perforations (31).

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