A new low-vibration static pressure pile

Abstract

The utility model relates to static pressure pile technical field, concretely relates to a new low vibration static pressure pile, including static pressure pile main part, the bottom end rotationally connected with connecting pile of static pressure pile main part, the bottom end nested installation of connecting pile has pile head mechanism, and reaches the inside of connecting pile, the pile head mechanism includes the connecting seat, the connecting seat fixed mounting is at the bottom end of connecting pile, the bottom end of connecting seat is installed movable pile head, the outer wall sliding connection of pile head mechanism has installation mechanism, and reaches the inside of connecting pile. The utility model through the mutual cooperation between inside parts of installation mechanism, the movable pile head is fixed in the connecting pile bottom end, is convenient for the replacement of the worn movable pile head, through the mutual cooperation between inside parts of pile head mechanism, the movable pile head is convenient for the low frequency vibration extrusion of soil, reduces the influence of pile tip resistance to movable pile head, and further improves the construction efficiency of static pressure pile main part.

Description

Technical Field

[0001] This utility model relates to the field of static pressure pile technology, specifically to a novel low-vibration static pressure pile. Background Technology

[0002] Static pressure piling is a method of engineering pile foundation construction. Static pressure piling involves using a static pile driver's pile-driving mechanism, with the machine's own weight and counterweights on the frame providing the reaction force to press the pile into the soil. This method offers advantages such as being noiseless, vibration-free, and impact-free, making it suitable for future green geotechnical engineering requirements. Furthermore, after the static pressure pile compresses the soil, it creates a cavity at the compression point, facilitating the pouring of concrete to form the pile foundation or the embedding of steel pipe piles.

[0003] A search revealed a utility model patent with publication number CN216428244U, which discloses a static pressure pile, including a pile body and a pile head. The pile body contains two channels. The pile head includes a base, a conical drill, a rotating shaft, and a bearing. The base is connected to the bottom of the pile body and contains a cavity communicating with the two channels. The bearing is fixed to the base, and the rotating shaft is connected to the bearing. One end of the rotating shaft is located within the cavity and has blades on its surface; the other end is connected to the conical drill. Multiple leakage holes are provided on the outer wall of the base, communicating with the cavity. This utility model, through the two channels communicating with the cavity, allows for the injection of high-pressure liquid into one channel, which drives the blades to move, thereby rotating the conical drill and reducing the pressure at the pile tip during pile driving. The leakage holes allow a small amount of liquid to seep out, wetting the surface around the pile and providing lubrication.

[0004] Although the aforementioned patent connects to the cavity through two channels, allowing the injection of high-pressure liquid into one channel to drive the fan blades and then the conical drill to rotate, thereby reducing the pressure at the pile tip during pile driving; and the setting of leakage holes allows a small amount of liquid to seep out, wetting the surface around the pile and playing a lubricating role, in the existing static pressure pile construction (pile driving) process, the pile body of the static pressure pile will inevitably be subjected to the strong reverse resistance of the soil, resulting in pile perimeter friction and pile tip resistance. Among them, the pile tip resistance will seriously affect the sinking speed during the static pressure pile construction process, thus affecting the work efficiency of the static pressure pile construction process.

[0005] Therefore, it is necessary to propose a new type of low-vibration static pressure pile to solve the above problems. Utility Model Content

[0006] The purpose of this invention is to provide a novel low-vibration static pressure pile. Through the mutual cooperation of the internal parts of the installation mechanism, the movable pile head is easily fixed at the bottom of the connecting pile, facilitating the replacement of worn movable pile heads. The mutual cooperation of the internal parts of the pile head mechanism also facilitates low-frequency vibration and compression of the soil by the movable pile head, reducing the impact of pile tip resistance on the movable pile head, thereby improving the construction efficiency of the static pressure pile body. This addresses the problem in existing static pressure piles where the pile body is inevitably subjected to strong reverse resistance from the soil, causing pile perimeter friction and pile tip resistance. Pile tip resistance significantly affects the sinking speed during static pressure pile construction, thus impacting work efficiency.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a novel low-vibration static pressure pile, comprising a static pressure pile body, a connecting pile rotatably connected to the bottom end of the static pressure pile body, a pile head mechanism nested at the bottom end of the connecting pile and penetrating into the interior of the connecting pile, and an installation mechanism slidably connected to the outer wall of the pile head mechanism and penetrating into the interior of the connecting pile;

[0008] The pile head mechanism includes a connecting seat, which is fixedly installed at the bottom end of the connecting pile. A movable pile head is installed at the bottom end of the connecting seat. A hydraulic telescopic rod is installed inside the connecting seat and connected to the bottom end of the connecting seat and the top end of the movable pile head.

[0009] The installation mechanism includes fixing bolts located on both sides of the bottom end of the connecting seat and penetrating the connecting seat to the interior of the connecting pile. A support ring is slidably connected inside the connecting seat, and the support ring is threadedly connected to the outer wall of the fixing bolt. A support spring is mechanically connected between the top end of the support ring and the interior of the connecting seat. Slider blocks are slidably connected to both sides of the outer wall of the connecting seat, penetrating the connecting seat to the interior of the connecting pile and fitting against both sides of the outer wall of the support ring. A limit plate is mechanically fixed to the top end of the slider, and a limit spring is mechanically connected between the limit plate and the inner wall of the connecting seat.

[0010] Preferably, the pile head mechanism further includes a servo motor, which is fixed inside the static pressure pile body by bolts and mechanically connected to the top of the connecting pile by a coupling.

[0011] Preferably, the connecting seat has an internal expansion groove that matches the hydraulic expansion rod, the top of the connecting seat is equipped with a hydraulic cylinder that drives the hydraulic expansion rod, and the bottom of the static pressure pile body has an installation groove that matches the connecting seat.

[0012] Preferably, a sealing ring is nested at the connection between the top of the connecting pile and the bottom of the static pressure pile body, and is rotatably connected to the static pressure pile body through a bearing; the bottom of the movable pile head is provided with a conical structure.

[0013] Preferably, the connecting pile, the connecting seat, and the support ring are all provided with threaded holes that match the fixing bolts. The outer wall of the fixing bolt is mechanically fixed with a protrusion located at the bottom end of the support ring. The connecting seat is provided with a moving groove that matches the support ring.

[0014] Preferably, the contact surfaces of the slider and the outer wall of the support ring are both conical surfaces, and the inner wall of the connecting pile is provided with a vertical groove that matches the slider, and the top of the vertical groove is provided with a 90-degree arc groove.

[0015] The technical effects and advantages provided by this utility model in the above technical solution are as follows:

[0016] 1. By rotating the fixing bolt, the fixing bolt moves through the threaded rotation inside the support ring and the connecting seat. The movement of the fixing bolt presses the support ring through the protrusions on the outer wall, causing the support ring to compress the support spring and move. The movement of the support ring presses the slider through the conical surface, and the slider, under the force, drives the limiting plate to compress the limiting spring and move. This causes the slider to move to the outer wall of the connecting seat, allowing the connecting seat to slide in the vertical groove on the inner wall of the connecting pile through the slider. Rotating the connecting seat allows it to move through the slider into the arc-shaped groove, completing the connection and limiting between the connecting pile and the connecting seat. Finally, rotating the fixing bolt allows it to pass through the connecting seat and into the interior of the connecting pile, thus completing the connection and fixing between the connecting seat and the connecting pile.

[0017] 2. The connecting seat drives the movable pile head to be installed at the bottom of the site. By starting the servo motor, the servo motor drives the connecting pile to rotate. The rotation of the connecting pile drives the connecting seat to rotate counterclockwise through the fixing bolts and slider. The rotation of the connecting seat drives the movable pile head to rotate through the hydraulic telescopic rod. The rotation of the connecting pile and the movable pile head compresses the soil around them. At the same time, the hydraulic telescopic rod drives the movable pile head to move at a low frequency through the hydraulic cylinder. This causes the movable pile head to vibrate and compress the soil at a low frequency, reducing the impact of pile tip resistance on the movable pile head, thereby improving the construction efficiency of the static pressure pile body. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is a cross-sectional structural diagram of the connector of this utility model;

[0021] Figure 3 This is a schematic cross-sectional view of the connection structure between the connecting pile and the static pressure pile of this utility model;

[0022] Figure 4 For the present utility model Figure 3 Enlarged structural diagram at point A in the middle.

[0023] Explanation of reference numerals in the attached figures:

[0024] 1. Static pressure pile body; 101. Connecting pile; 2. Pile head mechanism; 201. Connecting seat; 202. Movable pile head; 203. Hydraulic telescopic rod; 204. Servo motor; 3. Installation mechanism; 301. Fixing bolt; 302. Support ring; 303. Support spring; 304. Sliding block; 305. Limiting plate; 306. Limiting spring. Detailed Implementation

[0025] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0026] This utility model provides, for example Figure 1-4 The present invention relates to a novel low-vibration static pressure pile, comprising a static pressure pile body 1, a connecting pile 101 rotatably connected to the bottom end of the static pressure pile body 1, a pile head mechanism 2 nested at the bottom end of the connecting pile 101 and extending into the interior of the connecting pile 101, and an installation mechanism 3 slidably connected to the outer wall of the pile head mechanism 2 and extending into the interior of the connecting pile 101.

[0027] The pile head mechanism 2 includes a connecting seat 201, which is fixedly installed at the bottom end of the connecting pile 101. A movable pile head 202 is installed at the bottom end of the connecting seat 201. A hydraulic telescopic rod 203 is installed inside the connecting seat 201 and is connected to the bottom end of the connecting seat 201 and the top end of the movable pile head 202.

[0028] The mounting mechanism 3 includes fixing bolts 301, which are located on both sides of the bottom end of the connecting seat 201 and penetrate through the connecting seat 201 to the interior of the connecting pile 101. A support ring 302 is slidably connected inside the connecting seat 201, and the support ring 302 is threadedly connected to the outer wall of the fixing bolt 301. A support spring 303 is mechanically connected between the top of the support ring 302 and the interior of the connecting seat 201. Slider blocks 304 are slidably connected on both sides of the outer wall of the connecting seat 201, penetrate through the connecting seat 201 to the interior of the connecting pile 101, and fit against both sides of the outer wall of the support ring 302. A limit plate 305 is mechanically fixed at the top of the slider 304, and a limit spring 306 is mechanically connected between the limit plate 305 and the inner wall of the connecting seat 201.

[0029] The mutual cooperation between the internal parts of the installation mechanism 3 facilitates the fixing of the movable pile head 202 at the bottom of the connecting pile 101, and facilitates the replacement of the worn movable pile head 202. The mutual cooperation between the internal parts of the pile head mechanism 2 facilitates the low-frequency vibration and compression of the soil by the movable pile head 202, reducing the impact of the pile tip resistance on the movable pile head 202, thereby improving the construction efficiency of the static pressure pile body 1.

[0030] Refer to the instruction manual appendix Figure 1-4 The pile head mechanism 2 also includes a servo motor 204, which is fixed inside the static pressure pile body 1 by bolts and mechanically connected to the top of the connecting pile 101 by a coupling. Through the mutual cooperation between the internal parts of the pile head mechanism 2, the servo motor 204 can drive the connecting pile 101 to rotate and squeeze at the bottom of the static pressure pile body 1.

[0031] Refer to the instruction manual appendix Figure 1-4 The connecting seat 201 has an internal expansion groove that matches the hydraulic expansion rod 203. A hydraulic cylinder that drives the hydraulic expansion rod 203 is installed at the top of the connecting seat 201. The bottom of the static pressure pile body 1 has an installation groove that matches the connecting seat 201. The hydraulic expansion rod 203 drives the movable pile head 202 to extend and slide by the hydraulic expansion rod 203.

[0032] Refer to the instruction manual appendix Figure 1-4 A sealing ring is nested at the connection between the top of the connecting pile 101 and the bottom of the static pressure pile body 1, and is rotatably connected to the static pressure pile body 1 through a bearing. The bottom of the movable pile head 202 is provided with a conical structure. A sealing ring is nested at the connection between the top of the connecting pile 101 and the bottom of the static pressure pile body 1, and is rotatably connected to the static pressure pile body 1 through a bearing. This facilitates the sealing rotation of the connecting pile 101 at the bottom of the static pressure pile body 1 and the compression of the soil around it.

[0033] Refer to the instruction manual appendix Figure 1-4 The connecting pile 101, the connecting seat 201, and the support ring 302 are all provided with threaded holes that match the fixing bolt 301. The outer wall of the fixing bolt 301 has a protrusion that is mechanically fixed on one side and is located at the bottom of the support ring 302. The connecting seat 201 has a moving groove that matches the support ring 302 inside. Since the connecting pile 101, the connecting seat 201, and the support ring 302 are all provided with threaded holes that match the fixing bolt 301, it is convenient for the connecting seat 201 to be installed and fixed at the bottom of the connecting pile 101 by the fixing bolt 301.

[0034] Refer to the instruction manual appendix Figure 1-4The contact surfaces of the slider 304 and the outer wall of the support ring 302 are both conical. The inner wall of the connecting pile 101 is provided with a vertical groove that matches the slider 304, and the top of the vertical groove is provided with a 90-degree arc groove. The vertical groove that matches the slider 304 and the 90-degree arc groove at the top of the vertical groove facilitate the slider 304 to slide vertically in the vertical groove and rotate into the arc groove, thus completing the connection between the connecting pile 101 and the connecting seat 201.

[0035] The working principle of this practical application is as follows:

[0036] Refer to the instruction manual appendix Figure 1-4 By rotating the fixing bolt 301, the fixing bolt 301 moves within the support ring 302 and the connecting seat 201 via the threaded rotation. The moving fixing bolt 301 presses the support ring 302 through the protrusions on the outer wall, causing the support ring 302 to compress the support spring 303 and move. The moving support ring 302 then presses the slider 304 through the conical surface. The slider 304, under pressure, drives the limiting plate 305 to compress the limiting spring 306 and move, causing the slider 304 to move to the outer wall of the connecting seat 201. The connecting seat 201 can then slide in the vertical groove on the inner wall of the connecting pile 101 via the slider 304. The connecting seat 201 is then rotated, causing it to move into the arc-shaped groove via the slider 304, thus completing the connection and limiting between the connecting pile 101 and the connecting seat 201. Finally, the fixing bolt 301 is rotated, allowing it to pass through the connecting seat 201 and into the interior of the connecting pile 101, thus completing the connection and fixing between the connecting seat 201 and the connecting pile 101.

[0037] Refer to the instruction manual appendix Figure 1-4 The connecting seat 201 drives the movable pile head 202 to install the bottom end of the connecting pile 101 on the construction site. By starting the servo motor 204, the servo motor 204 drives the connecting pile 101 to rotate. The rotation of the connecting pile 101 drives the connecting seat 201 to rotate counterclockwise through the fixing bolt 301 and the slider 304. The rotation of the connecting seat 201 drives the movable pile head 202 to rotate through the hydraulic telescopic rod 203. The rotation of the connecting pile 101 and the movable pile head 202 compresses the soil around them. At the same time, the hydraulic telescopic rod 203 drives the movable pile head 202 to move at a low frequency through the hydraulic cylinder. This causes the movable pile head 202 to vibrate and compress the soil at a low frequency, reducing the impact of the pile tip resistance on the movable pile head 202, thereby improving the construction efficiency of the static pressure pile body 1.

[0038] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A novel low-vibration static pressure pile, characterized in that: The system includes a static pressure pile body (1), a connecting pile (101) is rotatably connected to the bottom end of the static pressure pile body (1), a pile head mechanism (2) is nested at the bottom end of the connecting pile (101) and extends into the interior of the connecting pile (101), and an installation mechanism (3) is slidably connected to the outer wall of the pile head mechanism (2) and extends into the interior of the connecting pile (101); The pile head mechanism (2) includes a connecting seat (201), which is fixedly installed at the bottom end of the connecting pile (101). A movable pile head (202) is installed at the bottom end of the connecting seat (201). A hydraulic telescopic rod (203) is installed inside the connecting seat (201) and connected to the bottom end of the connecting seat (201) and the top end of the movable pile head (202). The installation mechanism (3) includes fixing bolts (301), which are located on both sides of the bottom end of the connecting seat (201) and penetrate through the connecting seat (201) to the interior of the connecting pile (101). A support ring (302) is slidably connected inside the connecting seat (201), and the support ring (302) is threadedly connected to the outer wall of the fixing bolt (301). A support spring (303) is mechanically connected between the top end of the support ring (302) and the interior of the connecting seat (201). A slider (304) is slidably connected on both sides of the outer wall of the connecting seat (201), and penetrates through the connecting seat (201) to the interior of the connecting pile (101) and fits against both sides of the outer wall of the support ring (302). A limit plate (305) is mechanically fixed at the top end of the slider (304), and a limit spring (306) is mechanically connected between the limit plate (305) and the inner wall of the connecting seat (201).

2. The novel low-vibration static pressure pile according to claim 1, characterized in that: The pile head mechanism (2) also includes a servo motor (204), which is fixed inside the static pressure pile body (1) by bolts and is mechanically connected to the top of the connecting pile (101) by a coupling.

3. The novel low-vibration static pressure pile according to claim 1, characterized in that: The connecting seat (201) has an internal expansion groove that matches the hydraulic telescopic rod (203). The top of the connecting seat (201) is equipped with a hydraulic cylinder that drives the hydraulic telescopic rod (203). The bottom of the static pressure pile body (1) has an installation groove that matches the connecting seat (201).

4. A novel low-vibration static pressure pile according to claim 2, characterized in that: The top of the connecting pile (101) is nested with a sealing ring at the connection between the top end and the bottom end of the static pressure pile body (1), and is rotatably connected to the static pressure pile body (1) through a bearing. The bottom end of the movable pile head (202) is provided with a conical structure.

5. A novel low-vibration static pressure pile according to claim 1, characterized in that: The connecting pile (101), connecting seat (201) and supporting ring (302) are all provided with threaded holes that match the fixing bolt (301). The outer wall of the fixing bolt (301) is mechanically fixed with a protrusion on one side and located at the bottom end of the supporting ring (302). The connecting seat (201) is provided with a moving groove that matches the supporting ring (302).

6. A novel low-vibration static pressure pile according to claim 1, characterized in that: The contact surfaces of the slider (304) and the outer wall of the support ring (302) are both conical surfaces. The inner wall of the connecting pile (101) is provided with a vertical groove that matches the slider (304), and the top of the vertical groove is provided with a 90-degree arc groove.

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