High-pressure jet grouting equipment suitable for precast pile head protection

Abstract

A high-pressure jet grouting device suitable for precast pile head protection relates to the technical field of precast pile head protection and comprises a protection mechanism and a tubular pile. The pipe pile is driven into the ground, and the protection mechanism is arranged outside the pipe pile in a sleeving mode. A pile driver is used for hammering a tubular pile, the tubular pile is driven into the ground, it is guaranteed that the end of the tubular pile is exposed out of the ground by about one meter, a protection mechanism is hooked and hoisted by a pile conveying machine, then the tubular pile is sleeved with the protection mechanism, and the pile conveying machine is used for hammering the protection mechanism, so that the lower end of the protection device enters the ground along the outer side of the tubular pile; cement paste is poured on the outer side of the periphery of the pile, and after the cement paste is solidified and formed, the stability of the pile is improved through cement, and the pile is prevented from inclining.

Description

Technical Field

[0001] The utility model relates to the technical field of prefabricated pile head protection, in particular to high-pressure jet grouting equipment suitable for prefabricated pile head protection. Background Art

[0002] Precast piles are hollow cylindrical, slender concrete prefabricated components manufactured using a pre-tensioning prestressing process, the addition of a high-efficiency water-reducing agent, and high-speed centrifugal steam curing molding method. They are primarily composed of a cylindrical pile body, an end plate, and a steel sleeve. Precast piles include concrete precast piles and steel piles. Commonly used precast concrete piles include reinforced concrete solid square piles and prestressed concrete hollow pipe piles.

[0003] Today's precast piles need to be hammered into the ground using a traditional pile driver. However, if the piles are simply held upright by the soil, they are likely to tilt due to environmental influences.

[0004] Therefore, a new type of high-pressure jet grouting equipment suitable for protecting the head of precast piles is needed, which can inject cement around the precast piles, and through the solidification of the cement, it can limit the precast piles around them, making the precast piles not easy to tilt. Utility Model Content

[0005] In view of the above technical problems, the utility model provides a high-pressure jet grouting equipment suitable for protecting the pile head of precast piles to solve the above problems.

[0006] The technical solution used in the utility model is: a high-pressure jet grouting device suitable for protecting the pile head of a prefabricated pile, comprising: a protection mechanism, a pipe pile;

[0007] The pipe pile is driven into the ground, and the protective mechanism is sleeved on the outside of the pipe pile; the pile is hammered by the pile driver to drive the pile into the ground, and the end of the pile is ensured to be exposed about one meter above the ground. The protective mechanism is then hooked by the pile driver and hoisted up. The protective mechanism is then sleeved on the pipe pile, and the pile driver hammers the protective mechanism so that the lower end of the protective device is inserted into the ground along the outside of the pipe pile;

[0008] The protection mechanism includes: a vertical pipe, a ring pipe, and a cylindrical hole;

[0009] There are two vertical tubes, each of which is hollow in design. The two vertical tubes are symmetrically distributed. The middle positions of the two vertical tubes are attached to the predetermined installation area of the circular plate above the outer sleeve frame through fastening mechanisms, and the lower ends of the two vertical tubes are connected to the ring tube through movable connecting parts; the ring tube is ring-shaped, and the ring tube is attached to the predetermined installation area on the outside of the cylindrical sleeve below the outer sleeve frame through a fastening mechanism. A cavity is provided inside the ring tube, and the cavity inside the ring tube is connected to the vertical tube. A plurality of cylindrical holes are provided on the ring tube, and each cylindrical hole is facing obliquely upward. The interval between each cylindrical hole is ten centimeters, and the diameter of each cylindrical hole is five millimeters.

[0010] Preferably, the protection mechanism further comprises: an outer sleeve frame and a hook block;

[0011] The outer sleeve frame structure is a circular plate on the top, with a cylindrical sleeve fixedly installed below the circular plate. A cylindrical through hole is provided at the center of the outer sleeve frame, and the diameter of this hole is slightly larger than the diameter of the pipe pile; the outer sleeve frame is equipped with two hook blocks at the first installation position on the surface of the circular plate above it, and the two hook blocks are symmetrically distributed.

[0012] Preferably, the protection mechanism further comprises: a hammer block; the hammer block is attached to a predetermined installation area of the upper circular plate of the outer sleeve frame through a fastening mechanism.

[0013] Preferably, the hook blocks are each provided with a hook hole, which is used to connect with a steel wire rope to facilitate lifting the protective mechanism.

[0014] The beneficial effects of the present invention compared with the prior art are:

[0015] 1. The utility model pours cement around the outside of the pile. After the cement solidifies and takes shape, the cement is used to improve the stability of the pile and prevent the pile from tilting.

[0016] 2. The utility model adopts internal grouting to carry out grouting, thus avoiding the problem of pile tilting caused by drilling and grouting on the ground.

[0017] 3. The utility model has a simple structure, is easy to manufacture, has a low cost and is more practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the first angle of the overall equipment and pipe piles of the utility model.

[0019] Figure 2 This is a schematic diagram of the second angle of the overall equipment of the utility model combined with the pipe pile.

[0020] Figure 3 This is a schematic diagram of the third angle of the overall equipment of the utility model combined with the pipe pile.

[0021] Figure 4 This is a schematic diagram of the overall device of the present invention from a first angle.

[0022] Figure 5 This is a schematic diagram of the overall device of the present invention from a second angle.

[0023] Figure numbers: 1. Vertical pipe; 2. Ring pipe; 3. Pipe pile; 4. Outer sleeve frame; 5. Hammer block; 6. Hook block; 7. Cylindrical hole. DETAILED DESCRIPTION

[0024] The following examples and accompanying drawings further illustrate the technical solution of the present invention. Many specific details are set forth in the following description to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways than those described herein, and those skilled in the art can make similar improvements without violating the scope of the present invention. Therefore, the present invention is not limited to the specific implementations disclosed below.

[0025] In the description of the present utility model, it should be noted that the terms "upper", "lower", "front", "back", "left", "right", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, or are the orientation or position relationship in which the utility model product is usually placed when in use. They are only for the convenience of describing the simplified description of the utility model patent, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as a limitation on the utility model patent. In addition, for the convenience of explanation, spatial relative terms such as "below", "below", "below", "above", "above", etc. may be used in the text to describe the relationship of an element or feature relative to other elements or features as shown in the figures. Spatially relative terms are intended to include different orientations of the device in use or operation other than the orientation shown in the drawings. The device may have other orientations (rotated 90 degrees or in other orientations), and the spatially relative descriptors used in the text may also be interpreted accordingly. It should be noted that, in this document, certain connection methods, such as "fixed connection" and "fixed installation," include but are not limited to methods of fixing two components, such as welding, screw-nut fixing, gluing, riveting, interference fit, etc. Those skilled in the art will understand the specific meanings of these terms in this application based on specific circumstances.

[0026] To facilitate understanding of the present invention, a more comprehensive description of the present invention will be provided below with reference to the accompanying drawings. The accompanying drawings illustrate preferred embodiments of the present invention. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and comprehensive understanding of the disclosure of the present invention.

[0027] Implementation example Figure 1-Figure 5 As shown, a high-pressure jet grouting device suitable for protecting the head of a precast pile comprises: a protection mechanism and a pipe pile 3;

[0028] The pipe pile 3 is driven into the ground, and the protective mechanism is sleeved on the outside of the pipe pile 3; the pile driver hammers the pipe pile 3, driving it into the ground, ensuring that the end of the pipe pile 3 is about one meter above the ground. The protective mechanism is hooked by the pile driver and hoisted up, then sleeved on the pipe pile 3, and the pile driver hammers the protective mechanism, so that the lower end of the protective device goes into the ground along the outside of the pipe pile 3;

[0029] The protection mechanism includes: a vertical pipe 1, a ring pipe 2, and a cylindrical hole 7;

[0030] There are two vertical tubes 1, and the interior of each vertical tube 1 is hollow. The two vertical tubes 1 are symmetrically distributed. The middle positions of the two vertical tubes 1 are respectively attached to the predetermined installation area of the circular plate above the outer sleeve frame 4 through a fastening mechanism. The lower ends of the two vertical tubes 1 are connected to the ring tube 2 through a movable connecting piece; the ring tube 2 is ring-shaped, and the ring tube 2 is attached to the predetermined installation area on the outside of the cylindrical sleeve below the outer sleeve frame 4 through a fastening mechanism. A cavity is provided inside the ring tube 2, and the cavity inside the ring tube 2 is connected to the vertical tube 1. The ring tube 2 is provided with multiple The cylindrical holes 7 are each oriented obliquely upward, and the interval between each cylindrical hole 7 is ten centimeters. The diameter of each cylindrical hole 7 is five millimeters. Specifically, by connecting the grouting pump to the two vertical pipes 1, one hundred to one hundred and fifty liters of cement are injected into the vertical pipes 1, and during the injection process, a pressure of two to three MPa is applied to fill the gaps between the outer sides of the pipe pile 3 and the ground with cement. After the grouting is completed, a steel wire rope is passed through the hook block 6, and the protective mechanism is lifted by the lifting equipment, and the equipment is removed to complete the grouting.

[0031] Implementation example Figure 1-Figure 5 As shown, the protection mechanism also includes: an outer sleeve frame 4, a hook block 6;

[0032] The outer sleeve frame 4 is structured as a circular plate on the top, with a cylindrical sleeve fixedly installed below the circular plate. A cylindrical through hole is provided at the center of the outer sleeve frame 4, and the diameter of this hole is slightly larger than the diameter of the pipe pile 3; the outer sleeve frame 4 is equipped with two hook blocks 6 at the first mounting position on the surface of the circular plate above it, and the two hook blocks 6 are symmetrically distributed.

[0033] Implementation example Figure 1-Figure 5 As shown, the protection mechanism further includes: a hammer block 5; the hammer block 5 is attached to a predetermined installation area of the circular plate above the outer sleeve frame 4 by a fastening mechanism. Specifically, the hook block 6 is hoisted by a crane, thereby driving the protection mechanism to descend together, so that the cylindrical sleeve below the outer sleeve frame 4 is sleeved on the pipe pile 3, and then the hammer block 5 is struck by a traditional pile driver, so that the lower part of the outer sleeve frame 4 goes into the ground along the outer side of the pipe pile 3.

[0034] Implementation example Figure 1-Figure 5 As shown, the hook blocks 6 are each provided with a hook hole, which is used to connect with a steel wire rope to facilitate lifting the protective mechanism.

[0035] Working principle:

[0036] Hammer the pipe pile 3 with a pile driver to drive the pipe pile 3 into the ground, leaving a distance of one meter between the top of the pipe pile 3 and the ground;

[0037] The hook block 6 is hoisted by a crane, which drives the protective mechanism down together, so that the cylindrical sleeve below the outer sleeve frame 4 is sleeved on the pile 3. Then, the hammer block 5 is struck by a conventional pile driver, so that the lower part of the outer sleeve frame 4 is driven into the ground along the outer side of the pile 3.

[0038] Subsequently, by connecting the grouting pump to the two vertical pipes 1, one hundred to one hundred and fifty liters of cement are injected into the vertical pipes 1, and during the injection process, a pressure of two to three MPa is applied to fill the gaps between the outside of the pipe pile 3 and the ground with cement. After the grouting is completed, a steel wire rope is passed through the hook block 6, the protective mechanism is lifted by the lifting equipment, the equipment is removed, and the grouting is completed.

[0039] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A high-pressure jet grouting equipment suitable for precast pile head protection, characterized in that: include: Protection mechanism, pipe pile (3); The pipe pile (3) is driven into the ground, and the protective mechanism is sleeved on the outside of the pipe pile (3); the pipe pile (3) is hammered by a pile driver to drive the pipe pile (3) into the ground, and the end of the pipe pile (3) is ensured to be exposed about one meter above the ground. The protective mechanism is hooked by the pile driver and hoisted up, and then the protective mechanism is sleeved on the pipe pile (3). The pile driver hammers the protective mechanism so that the lower end of the protective device enters the ground along the outside of the pipe pile (3); The protection mechanism comprises: a vertical pipe (1), a ring pipe (2), and a cylindrical hole (7); There are two vertical tubes (1), the interior of each vertical tube (1) is hollow, the two vertical tubes (1) are symmetrically distributed, the middle positions of the two vertical tubes (1) are respectively attached to the predetermined installation area of the circular plate above the outer sleeve frame (4) through a fastening mechanism, and the lower ends of the two vertical tubes (1) are connected to the ring tube (2) through a movable connecting piece; the ring tube (2) is ring-shaped, and the ring tube (2) is attached to the predetermined installation area on the outside of the cylindrical sleeve below the outer sleeve frame (4) through a fastening mechanism, and a cavity is provided inside the ring tube (2), and the cavity inside the ring tube (2) is connected to the vertical tube (1), and a plurality of cylindrical holes (7) are provided on the ring tube (2), each cylindrical hole (7) is oriented obliquely upward, and the interval between each cylindrical hole (7) is ten centimeters, and the diameter of each cylindrical hole (7) is five millimeters.

2. The high-pressure jet grouting equipment suitable for precast pile head protection according to claim 1 is characterized in that: The protection mechanism further comprises: an outer sleeve frame (4) and a hook block (6); The outer sleeve frame (4) is structured as follows: the upper portion is a circular plate, the lower portion of which is fixedly provided with a cylindrical sleeve; the center portion of the outer sleeve frame (4) is provided with a cylindrical through hole, the diameter of which is slightly larger than the diameter of the pipe pile (3); the outer sleeve frame (4) is provided with two hook blocks (6) at the first installation position on the upper circular plate surface thereof, and the two hook blocks (6) are symmetrically distributed.

3. The high-pressure jet grouting equipment suitable for precast pile head protection according to claim 1, characterized in that: The protection mechanism further comprises a hammer block (5); the hammer block (5) is attached to a predetermined installation area of the upper circular plate of the outer sleeve frame (4) through a fastening mechanism.

4. The high-pressure jet grouting equipment suitable for precast pile head protection according to claim 2, characterized in that: The hook blocks (6) are all provided with hook holes, which are used to connect with steel wire ropes to facilitate the lifting of the protective mechanism.

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