Spiral type heliostat prestressed concrete pipe pile

Abstract

The utility model relates to a spiral type heliostat prestressed concrete pipe pile, which belongs to the technical field of heliostats and comprises a pile body, an upper end plate, a spiral blade, a lower end plate, an annular embedded part and a closed pile head. The pile body is a concrete pipe pile; the upper end plate and the lower end plate are installed at the upper end and the lower end of the pile body respectively. The closed pile head is coaxially welded and mounted at the lower end of the lower end plate; the annular embedded part is fixedly embedded in a pile body at the lower end of the pile body; and the spiral blade surrounds the pile body and is welded and fixed on the annular embedded part at the lower part of the pile body. The pipe pile can be directly screwed into the ground, damage to the pipe pile during hammering or static pressure construction is avoided, the construction steps of hole forming in advance and concrete grouting material pouring are omitted, cost input is reduced, and the construction period is greatly shortened.

Description

Technical Field

[0001] The utility model relates to the technical field of heliostats, in particular to a spiral heliostat prestressed concrete pipe pile. Background Art

[0002] As a clean, renewable new energy, solar energy is increasingly widely used in production and life. With the rapid development of my country's solar thermal industry, the tower-type concentrating solar collector technology system has been increasingly widely used in the market due to its high thermal efficiency and good grid peak regulation capability. It has clean and green attributes, as well as a wide range of active and reactive power regulation and inertia support capabilities.

[0003] In the tower solar concentrator system, heliostats are solar radiation energy collection devices used to track the sun and project sunlight to a fixed position. Heliostats are installed on columns through a rotary reducer and a support structure, and then fixed to the base on the ground through the columns. The number of heliostats is very large, so it is necessary to increase the speed of heliostat column foundation construction and reduce the cost investment.

[0004] The heliostat columns in the prior art are prestressed concrete pipe piles with piles and columns integrated into one. There are two construction methods:

[0005] 1. Hammer or static pressure construction, using machinery to hammer / press the pipe piles into the ground. When the project soil is hard and has a high bearing capacity, it is easy to cause the pipe piles to break and be damaged.

[0006] 2. Pre-dig holes, plant piles, and then pour secondary grouting material to fix the piles. After 28 days of curing, subsequent installation and construction work can be carried out. This operation has high requirements, a long construction period, and many difficulties in winter. Utility Model Content

[0007] In view of the above shortcomings in the prior art, the utility model provides a spiral heliostat prestressed concrete pipe pile. A spiral blade is welded on the prestressed concrete pipe pile body, and the pipe pile can be directly screwed into the ground with the spiral blade, which is convenient and fast, with high construction speed and low cost.

[0008] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0009] A spiral heliostat prestressed concrete pipe pile, the pipe pile comprising a pile body, an upper end plate, an annular embedded part, a spiral blade, a lower end plate and a closed pile head;

[0010] The pile body is a concrete pipe pile; the upper end plate and the lower end plate are respectively installed at the upper and lower ends of the pile body; the closed-end pile head is coaxially welded and installed at the lower end of the lower end plate; the annular embedded part is fixedly buried in the pile body at the lower end of the pile body; the spiral blade surrounds the pile body and is welded and fixed on the annular embedded part at the lower part of the pile body.

[0011] Furthermore, the annular embedded part is a metal part; the height of the annular embedded part matches the number of turns of the spiral blade.

[0012] Furthermore, the annular embedded part includes a cylinder and anchor bars, and multiple rows of the anchor bars are evenly arranged around the cylinder.

[0013] Furthermore, the anchor bar is Type steel bars.

[0014] Furthermore, the closed pile head is a conical closed pile tip.

[0015] Furthermore, the pipe pile also includes prestressed steel bars; a plurality of the prestressed steel bars are evenly arranged around the pile body; the upper end plate and the lower end plate are respectively tied and fixed to the upper and lower ends of the prestressed steel bars.

[0016] Furthermore, a driving head of a screw pile driver is installed on the upper end plate, and the screw pile driver drives the pipe pile to rotate, and the rotation of the screw blade drives the pipe pile to be screwed into the ground.

[0017] Furthermore, a torque sensor and a verticality monitor are installed on the upper end plate; the torque sensor is used to measure the torsional moment on the pipe pile in real time; the verticality monitor is used to monitor the verticality of the pipe pile in real time.

[0018] Beneficial effects of the utility model:

[0019] The utility model welds a spiral blade on the prestressed concrete pipe pile, which is directly screwed into the ground by rotation, so as to avoid damage to the pipe pile during hammering or static pressure construction, and also saves the construction steps of pre-forming holes and pouring concrete grouting materials, thereby reducing cost investment and greatly shortening the construction period.

[0020] The utility model is equipped with a conical closed pile tip and a spiral blade on the prestressed concrete pipe pile. During construction, the circular upper end plate is connected to the driving head of the spiral pile driver. In combination with the torque sensor and the verticality monitor, the pipe pile is directly screwed into the ground, and the installation quality of the pipe pile can be monitored at any time. At the same time, the pile body fits tightly with the surrounding land, and there is no need to pour concrete grouting materials, which saves 28 days of maintenance period, reduces the investment of construction costs, greatly saves construction period, and is not restricted by winter construction.

[0021] The utility model fixes the spiral blade on the pile body through the annular embedded part, so as to ensure that the spiral blade rotates stably and drives the pile body to rotate into the ground. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the prestressed concrete pipe pile of the spiral heliostat of the utility model;

[0023] Figure 2 This is a schematic diagram of the structure of the annular embedded part in the utility model;

[0024] Figure 3 It is a side view of the left side wall of the annular embedded part in the utility model;

[0025] Figure 4 It is a cross-sectional view of the annular embedded part in the utility model.

[0026] Among them: 1-pile body, 2-prestressed steel bar, 3-circular upper end plate, 4-annular embedded parts, 4.1-cylinder, 4.2-anchor bar, 5-spiral blade, 6-circular lower end plate, 7-closed pile head. DETAILED DESCRIPTION

[0027] The following is a further detailed description of the specific implementation of the utility model in conjunction with the accompanying drawings and examples. The following examples are only used to illustrate the utility model, but are not intended to limit the scope of the utility model.

[0028] The terms such as upper, lower, left, right, inside, outside, front end, rear end, head, tail, etc. in this application document are based on the positions or positions shown in the drawings. If the drawings are different, the corresponding positions may also change accordingly, so they cannot be understood as limiting the scope of protection.

[0029] In the present utility model, the terms "install", "connected", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, an integral connection, a mechanical connection, an electrical connection or mutual communication, a direct connection, an indirect connection through an intermediate medium, the internal connection of two components, or the interaction relationship between two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0030] This embodiment describes a spiral heliostat prestressed concrete pipe pile, which is simple to construct, can greatly shorten the construction period, and reduce the investment in construction costs.

[0031] like Figure 1As shown, the pipe pile includes a pile body 1, prestressed steel bars 2, an annular upper end plate 3, an annular embedded part 4, a spiral blade 5, an annular lower end plate 6 and a closed pile head 7.

[0032] The pile body 1 is a hollow concrete pipe pile, in which a plurality of prestressed steel bars 2 are evenly arranged to strengthen the strength of the concrete pipe pile. The pile body 1 of this embodiment reduces the use of concrete and reduces the weight of the pipe pile while ensuring the strength of the pipe pile.

[0033] The annular upper end plate 3 and the annular lower end plate 6 are respectively tied and fixed to the two ends of the prestressed steel bar 2. The annular upper end plate 3 is used to connect with the heliostat or other equipment that needs to be supported. The closed pile head 7 is coaxially welded and installed at the lower end of the annular lower end plate 6. The closed pile head 7 can improve the overall stability and bearing capacity of the pipe pile during installation. The closed pile head 7 of this embodiment is a conical closed pile tip, which reduces the resistance of the pipe pile to be implanted underground.

[0034] In this embodiment, a spiral blade 5 is installed at the lower part of the pile body 1. During construction, the annular upper end plate 3 is connected to the driving head of the spiral pile driver. The spiral pile driver drives the pipe pile to rotate. The spiral blade 5 drives the pipe pile to rotate into the ground during the rotation process, which can avoid damage to the pile body during the construction of hammer piles or static pressure piles. A torque sensor and a verticality monitor are installed on the driving head of the spiral pile driver. The torque sensor can measure the torsional moment applied to the pipe pile by the spiral pile driver in real time to ensure that the pile body 1 is evenly rotated into the ground, while avoiding overload of the spiral pile driver. The verticality monitor can monitor the verticality of the pipe pile in real time to ensure that the pipe pile is vertically rotated into the ground. In this embodiment, the installation quality of the pipe pile can be monitored at any time through the torque sensor and the verticality monitor. At the same time, because the pile body 1 is closely attached to the surrounding land, there is no need to pour concrete grouting material, which saves 28 days of maintenance period, reduces the investment of construction costs and greatly saves construction period, and is not restricted by winter construction.

[0035] In order to ensure that the spiral blade 5 is firmly connected to the pipe pile, the present embodiment provides an annular embedded part 4 at the lower part of the pile body 1, the annular embedded part 4 is embedded in the lower part of the pile body 1, and anchor bars are provided on the annular embedded part 4 to enhance stability. The annular embedded part 4 is a metal part, and the spiral blade 5 surrounds the lower part of the pile body 1 and is welded to the annular embedded part 4.

[0036] like Figures 2 to 4 As shown, the annular embedded part 4 includes a cylinder 4.1 and anchor bars 4.2. The cylinder 4.1 is placed at the lower inner part of the pile body 1 to ensure that it is fixed to the lower end of the pile body 1 through concrete, and the outer diameter of the cylinder 4.1 matches the outer diameter of the pile body 1. Multiple rows of anchor bars 4.2 are evenly arranged around the cylinder 4.1 to improve the connection strength between the annular embedded part 4 and the pile body 1. The height of the annular embedded part 4 in this embodiment matches the number of turns of the spiral blade 5. The anchor bars 4.2 can be Type steel bars, when buried in concrete, enhance the strength of the pile.

[0037] Although the principle of the present invention is described in detail above in conjunction with the preferred embodiments of the present invention, those skilled in the art should understand that the above embodiments are merely explanations of the exemplary implementation of the present invention, and are not intended to limit the scope of the present invention. The details in the embodiments do not constitute limitations on the scope of the present invention. Without departing from the spirit and scope of the present invention, any obvious changes such as equivalent transformations and simple replacements based on the technical solution of the present invention fall within the scope of protection of the present invention.

Claims

1. A spiral heliostat prestressed concrete pipe pile, characterized in that: The pipe pile comprises a pile body (1), an upper end plate, an annular embedded part (4), a spiral blade (5), a lower end plate and a closed pile head (7); The pile body (1) is a concrete pipe pile; the upper end plate and the lower end plate are respectively mounted at the upper and lower ends of the pile body (1); the closed-end pile head (7) is coaxially welded and mounted at the lower end of the lower end plate; the annular embedded part (4) is fixedly embedded in the pile body at the lower end of the pile body (1); the spiral blade (5) surrounds the pile body (1) and is welded and fixed to the annular embedded part (4) at the lower part of the pile body (1).

2. The spiral heliostat prestressed concrete pipe pile according to claim 1, characterized in that: The annular embedded part (4) is a metal part; the height of the annular embedded part (4) matches the number of turns of the spiral blade (5).

3. The spiral heliostat prestressed concrete pipe pile according to claim 2, characterized in that: The annular embedded part (4) comprises a cylinder (4.1) and anchor bars (4.2), and a plurality of rows of anchor bars (4.2) are evenly arranged around the cylinder (4.1).

4. The spiral heliostat prestressed concrete pipe pile according to claim 3, characterized in that: The anchor bar (4.2) is Type steel bars.

5. The spiral heliostat prestressed concrete pipe pile according to claim 1, characterized in that: The closed pile head (7) is a conical closed pile tip.

6. The spiral heliostat prestressed concrete pipe pile according to claim 1, characterized in that: The pipe pile also includes prestressed steel bars (2); a plurality of the prestressed steel bars (2) are evenly arranged around the inside of the pile body (1); the upper end plate and the lower end plate are respectively tied and fixed to the upper and lower ends of the prestressed steel bars (2).

7. The spiral heliostat prestressed concrete pipe pile according to claim 1, characterized in that: A screw pile driver driving head is installed on the upper end plate, and the screw pile driver drives the pipe pile to rotate. The rotation of the screw blade (5) drives the pipe pile to be screwed into the ground.

8. The spiral heliostat prestressed concrete pipe pile according to claim 7, characterized in that: The upper end plate is also provided with a torque sensor and a verticality monitor; the torque sensor is used to measure the torsional moment on the pipe pile in real time; the verticality monitor is used to monitor the verticality of the pipe pile in real time.

Images