Static pile driver for foundation pit support equipped with modular combined pile frame

Abstract

This utility model relates to the field of static pile driving technology, specifically to a static pile driving machine for foundation pit support equipped with a modular combined pile frame. It includes a crossbeam mounted on the hydraulic arm of the static pile driving machine, a hydraulic cylinder fixedly mounted on the crossbeam, and an external fixing frame detachably mounted at the end of the telescopic shaft of the hydraulic cylinder. The external fixing frame has a cross-shaped cross section, and a modular pile frame is fixedly mounted on the bottom surface of the external fixing frame. The modular pile frame has a double-stepped cross section, and multiple inner abutment grooves are provided inside the modular pile frame. Adjacent inner abutment grooves are interconnected, and the bottom of the lowest inner abutment groove is connected to the outside. The inner diameter of the multiple inner abutment grooves decreases sequentially from bottom to top. Multiple clamping steps are fixedly mounted on each side plate of the external fixing frame, and the clamping steps abut against the top surface of the corresponding part of the modular pile frame. This utility model modularizes the pile frame, facilitating adaptation to foundation piles of different sizes and making it convenient to use.

Description

Technical Field

[0001] This utility model relates to the field of static pile driver technology, and more specifically, to a static pile driver for foundation pit support equipped with a modular combined pile frame. Background Technology

[0002] In modern urban construction, foundation pit engineering is a fundamental link in the development of underground space. Its construction quality and efficiency directly affect the safety and progress of the entire project. Static pile drivers, with their advantages of low noise and low vibration, have become an important piece of equipment for foundation pit support pile construction.

[0003] Patent CN114319357B discloses a static pile driver, comprising a body, a crane, and a quick-assembly device. The body has a first hinge seat, and the crane is detachably mounted on the body. The crane has a second hinge seat that mates with the first hinge seat. The quick-assembly device is connected to the body or the crane and includes a cylinder, a movable shaft, and a fluid supply mechanism. The movable shaft is connected to the cylinder, and the fluid supply mechanism is also connected to the cylinder. The fluid supply mechanism provides fluid to the cylinder to drive the cylinder or the movable shaft to connect the first and second hinge seats. This static pile driver allows for quick assembly and disassembly of the crane during transport, simplifying the process and saving time.

[0004] Although this technical solution has the advantages of enabling rapid assembly and disassembly of cranes, making assembly and disassembly convenient and saving time, as the scale of foundation pits continues to expand, their shapes become increasingly complex, and geological conditions become more diverse, traditional static pile drivers have exposed many problems in practical applications.

[0005] Traditional static pile drivers have fixed pile frame structures and dimensions. These frames are generally only suitable for long piles of constant dimensions and are ill-suited for piles of different sizes. When dealing with large, ultra-deep foundation pits, fixed pile frames are difficult to adapt to different long and large-diameter piles, affecting pile driving requirements. Therefore, we propose a static pile driver for foundation pit support equipped with a modular combined pile frame. Utility Model Content

[0006] The purpose of this utility model is to provide a static pile driver for foundation pit support equipped with a modular combined pile frame, so as to solve the defects mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] A static pile driver for foundation pit support equipped with a modular combined pile frame includes a crossbeam mounted on the hydraulic arm of the static pile driver. A hydraulic cylinder is fixedly mounted on the crossbeam. An external fixing frame is detachably mounted at the end of the telescopic shaft of the hydraulic cylinder. The cross-section of the external fixing frame is cross-shaped. A modular pile frame is fixedly mounted on the bottom surface of the external fixing frame. The cross-section of the modular pile frame is double-stepped. Multiple inner abutment grooves are provided inside the modular pile frame. Two adjacent inner abutment grooves are interconnected. The bottom of the inner abutment groove located at the bottom is connected to the outside. The inner diameter of the multiple inner abutment grooves decreases sequentially from bottom to top. Multiple clamping steps are fixedly mounted on each side plate of the external fixing frame. The clamping steps abut against the top surface of the corresponding part of the modular pile frame.

[0009] Preferably, the top of the inner abutment groove located at the top is not connected to the outside, and the foundation pile of the corresponding size abuts against the top wall of the inner abutment groove for the foundation pile pressing operation.

[0010] Preferably, a top plate is fixedly installed at the top of the external fixing frame, and a vertically arranged support column is fixedly installed at the center of the top surface of the top plate. A bolt plate is fixedly installed at the top of the support column, and the bolt plate is detachably installed on the telescopic shaft of the hydraulic cylinder.

[0011] Preferably, a steel plate is fixedly installed at the end of the telescopic shaft of the hydraulic cylinder, and the bolt plate is detachably connected to the steel plate;

[0012] The above two settings facilitate loading, unloading, and replacement operations.

[0013] Preferably, a reinforcing pad is fixedly installed between the support column and the top plate, and the outer diameter of the reinforcing pad increases sequentially from top to bottom;

[0014] This feature increases the fixed contact area between the support column and the top plate, making the structure more robust and stable.

[0015] Preferably, a rectangular insertion hole is provided at the center of the bolt plate, and a rectangular positioning block is fixedly installed at the center of the bottom surface of the steel plate. The rectangular positioning block is located inside the rectangular insertion hole and is inserted into the rectangular insertion hole.

[0016] This setting facilitates positioning and assembly operations.

[0017] Preferably, both the rectangular positioning block and the rectangular socket have rectangular cross-sections, and the size of the rectangular positioning block is adapted to the size of the rectangular socket.

[0018] Preferably, the steel plate and the bolt plate are fixed together by a plurality of fastening bolts, and the fastening bolts are threaded with nuts.

[0019] Compared with the prior art, the beneficial effects of this utility model are:

[0020] 1. This utility model achieves modular combination of pile frame structure by setting an external fixed frame and a modular pile frame that can be detachably installed on the telescopic shaft of the hydraulic cylinder. The cross-shaped cross section of the external fixed frame and the double-sided stepped design of the modular pile frame, together with multiple inner abutment grooves with successively decreasing inner diameters, can adapt to piles of different sizes. Whether it is long piles and large-diameter piles in large and ultra-deep foundation pits, or conventional piles in small foundation pits, they can be flexibly installed and used, effectively solving the problem that traditional fixed pile frames are difficult to adapt to diverse piles.

[0021] 2. This utility model features a detachable connection structure between the top plate, support column, bolt plate, and steel plate at the end of the hydraulic cylinder telescopic shaft of the external fixing frame. Combined with the insertion and matching of rectangular positioning blocks and rectangular insertion holes, it facilitates quick loading, unloading, and replacement of modular pile frames. This significantly shortens equipment adjustment time and improves construction efficiency when switching between different construction scenarios. At the same time, the reinforcing pad increases the fixed contact area between the support column and the top plate, ensuring the structural firmness and stability and guaranteeing the safety and reliability of the pile driving process. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0023] Figure 2 This is a schematic diagram of the exploded structure of this utility model;

[0024] Figure 3 This utility model Figure 2 Enlarged view of point A in the middle;

[0025] Figure 4 This is a partial structural schematic diagram of the present invention;

[0026] Figure 5 This is a sectional view of the modular pile frame of this utility model;

[0027] The meanings of the labels in the diagram are as follows:

[0028] 1. Crossbeam;

[0029] 2. Hydraulic cylinder; 20. Steel plate; 201. Rectangular positioning block;

[0030] 3. Modular pile frame; 30. Inner abutment groove; 31. Outer fixing frame; 32. Abutment step; 33. Top plate; 34. Support column; 341. Reinforcing pad; 35. Bolt plate; 351. Rectangular insertion hole; 36. Fastening bolt; 37. Nut. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0032] Please see Figures 1-5 This utility model provides a technical solution: a static pile driver for foundation pit support equipped with a modular combined pile frame, including a crossbeam 1 installed on the hydraulic arm of the static pile driver, a hydraulic cylinder 2 fixedly installed on the crossbeam 1, an external fixing frame 31 detachably installed at the end of the telescopic shaft of the hydraulic cylinder 2, the cross section of the external fixing frame 31 being cross-shaped, a modular pile frame 3 fixedly installed on the bottom surface of the external fixing frame 31, the cross section of the modular pile frame 3 being double-sided stepped, and multiple inner abutment grooves 30 provided inside the modular pile frame 3, with two adjacent inner abutment grooves 30 interconnected, located in... The bottom of the lowest inner abutment groove 30 is connected to the outside. The inner diameter of the multiple inner abutment grooves 30 decreases sequentially from bottom to top, which can accommodate foundation piles of different diameters and lengths. Multiple clamping steps 32 are fixedly installed on each side plate of the outer fixing frame 31. The clamping steps 32 abut against the top surface of the corresponding part of the modular pile frame 3, so that the cross-shaped cross section of the outer fixing frame 31 matches the double-sided stepped structure of the modular pile frame 3 to achieve a stable connection. This allows the static pile driver to flexibly cope with diverse foundation pit support needs and overcomes the problem of poor adaptability of traditional fixed pile frames.

[0033] like Figure 5 As shown, the top of the inner abutment groove 30 located at the top is not connected to the outside. The foundation pile of the corresponding size abuts against the top wall of the inner abutment groove 30 for the foundation pile pressing operation, so that the foundation pile of the corresponding size can be stably abutted against the top wall of the inner abutment groove 30. Under the drive of the hydraulic cylinder 2, it provides a reliable force point for the foundation pile pressing operation, ensuring accurate positioning of the foundation pile during the pile pressing process, and effectively improving the stability and accuracy of the pile pressing construction.

[0034] In this embodiment, a top plate 33 is fixedly installed on the top of the external fixing frame 31. A vertically arranged support column 34 is fixedly installed at the center of the top surface of the top plate 33. A bolt plate 35 is fixedly installed on the top of the support column 34. The bolt plate 35 is detachably installed on the telescopic shaft of the hydraulic cylinder 2. A steel plate 20 is fixedly installed at the end of the telescopic shaft of the hydraulic cylinder 2. The bolt plate 35 and the steel plate 20 are detachably connected, so that the bolt plate 35 and the steel plate 20 are detachably connected by fastening bolts 36. This facilitates quick loading, unloading and replacement of the modular pile frame 3. When switching between different construction scenarios, the equipment adjustment time can be greatly shortened, the construction efficiency can be significantly improved, and the risk of construction delays caused by equipment replacement can be reduced.

[0035] like Figure 3As shown, a reinforcing pad 341 is fixedly installed between the support column 34 and the top plate 33. The outer diameter of the reinforcing pad 341 increases sequentially from top to bottom, which effectively increases the fixed contact area between the two and enhances the connection strength between the support column 34 and the top plate 33. This makes the overall structure of the outer fixing frame 31 and the modular pile frame 3 more solid and stable during the pile driving process, ensuring the safe operation of the equipment and reducing construction accidents caused by structural loosening.

[0036] like Figure 3 As shown, a rectangular insertion hole 351 is provided at the center of the bolt plate 35, and a rectangular positioning block 201 is fixedly installed at the center of the bottom surface of the steel plate 20. The rectangular positioning block 201 is located inside the rectangular insertion hole 351 and is inserted into the rectangular insertion hole 351. The cross-section of both the rectangular positioning block 201 and the rectangular insertion hole 351 is rectangular. The size of the rectangular positioning block 201 is adapted to the size of the rectangular insertion hole 351. When installing the external fixing bracket 31, accurate positioning can be achieved quickly, avoiding installation deviation.

[0037] like Figure 3 As shown, the steel plate 20 and the bolt plate 35 are fixed together by multiple fastening bolts 36. Nuts 37 are threaded onto the fastening bolts 36, which not only ensures installation efficiency but also ensures the reliability of the connection, simplifies the equipment assembly process, and reduces the difficulty of installation operation.

[0038] Finally, it should be noted that the hydraulic cylinder 2, the corresponding control system, and the external power supply involved in this utility model are all general standard parts or parts known to those skilled in the art. Their structure and principle can be known to those skilled in the art through technical manuals or conventional experimental methods. In the idle space of this device, all the above-mentioned electrical components, which refer to power elements, electrical components, and the matching controller and power supply, are connected by wires. The specific connection method should refer to the working principle in this utility model. The electrical connections between each electrical component are completed in the order of operation. The detailed connection methods are all technologies known in the art.

[0039] When using the static pile driver for foundation pit support equipped with modular combined pile frame of this utility model, firstly, select the appropriate specification of modular pile frame 3 according to the diameter and length of the foundation pile. Then, align the rectangular insertion hole 351 with the rectangular positioning block 201 on the bottom surface of the steel plate 20 for insertion and positioning. After positioning, use fastening bolts 36 and nuts 37 to firmly connect the bolt plate 35 to the steel plate 20, thereby installing the modular pile frame 3 and the external fixing frame 31 onto the telescopic shaft of the hydraulic cylinder 2.

[0040] After installation, start the static pile driver. Adjust the position of the crossbeam 1 using the hydraulic arm, align the modular pile frame 3 with the vertically placed foundation pile, such as a long pile or cylindrical pile, so that the top of the foundation pile abuts into the corresponding inner groove 30. Operate the hydraulic cylinder 2 to drive the modular pile frame 3 to press the foundation pile down, inserting the foundation pile into the soil and completing the foundation pit support operation. When it is necessary to replace the foundation pile with a different specification, remove the fastening bolts 36 and nuts 37, remove the modular pile frame 3, and replace it.

[0041] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A static pile press for foundation pit support equipped with a modular combined pile frame, comprising a cross beam (1) installed on the hydraulic arm of the static pile press, characterized in that: A hydraulic cylinder (2) is fixedly installed on the crossbeam (1). An external fixing frame (31) is detachably installed at the end of the telescopic shaft of the hydraulic cylinder (2). The cross section of the external fixing frame (31) is cross-shaped. A modular pile frame (3) is fixedly installed on the bottom surface of the external fixing frame (31). The cross section of the modular pile frame (3) is double-sided stepped. Multiple inner abutment grooves (30) are provided inside the modular pile frame (3). Two adjacent inner abutment grooves (30) are interconnected. The bottom of the inner abutment groove (30) located at the bottom is connected to the outside. The inner diameter of the multiple inner abutment grooves (30) decreases sequentially from bottom to top. Multiple clamping steps (32) are fixedly installed on each side plate of the external fixing frame (31). The clamping steps (32) abut against the top surface of the corresponding part of the modular pile frame (3).

2. The static press machine for foundation pit support equipped with the modular combined pile frame according to claim 1, characterized in that: The top of the inner abutment groove (30) located at the top is not connected to the outside. The foundation pile of the corresponding size abuts against the top wall of the inner abutment groove (30) for the foundation pile pressing operation.

3. The static press machine for foundation pit support equipped with the modular combined pile frame according to claim 1, characterized in that: The top of the external fixing frame (31) is fixedly installed with a top plate (33), and a vertically arranged support column (34) is fixedly installed at the center of the top surface of the top plate (33). A bolt plate (35) is fixedly installed at the top of the support column (34), and the bolt plate (35) is detachably installed on the telescopic shaft of the hydraulic cylinder (2).

4. The static press of the foundation pit support equipped with the modular combined pile frame according to claim 3, characterized in that: A steel plate (20) is fixedly installed at the end of the telescopic shaft of the hydraulic cylinder (2), and the bolt plate (35) is detachably connected to the steel plate (20).

5. The static pile press for foundation pit support equipped with the modular combined pile rack according to claim 4, characterized in that: A reinforcing pad (341) is fixedly installed between the support column (34) and the top plate (33), and the outer diameter of the reinforcing pad (341) increases sequentially from top to bottom.

6. The static pile driver for foundation pit support equipped with a modular combined pile frame as described in claim 4, characterized in that: A rectangular insertion hole (351) is provided at the center of the bolt plate (35), and a rectangular positioning block (201) is fixedly installed at the center of the bottom surface of the steel plate (20). The rectangular positioning block (201) is located inside the rectangular insertion hole (351) and is inserted into the rectangular insertion hole (351).

7. The static pile driver for foundation pit support equipped with a modular combined pile frame as described in claim 6, characterized in that: The rectangular positioning block (201) and the rectangular socket (351) both have rectangular cross sections, and the size of the rectangular positioning block (201) is adapted to the size of the rectangular socket (351).

8. The static pile driver for foundation pit support equipped with a modular combined pile frame as described in claim 5, characterized in that: The steel plate (20) and the bolt plate (35) are fixed together by a plurality of fastening bolts (36), and nuts (37) are threaded onto the fastening bolts (36).

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