An insert type prestressed concrete pile

Abstract

The utility model provides a kind of plug-in prestressed concrete pile, it is related to plug-in prestressed concrete pile technical field, comprising: lower section pile, the bottom end of lower section pile is fixedly connected with pile tip, the top of lower section pile inner chamber is fixedly connected with four L type connecting plates one in equidistant around, the top of four L type connecting plates one is fixedly connected with pressure head one.The utility model, reduce the height of upper section pile assembly, make L type clamping plate insert corresponding arc-shaped groove and insert slot inside, after the bottom of L type clamping plate is attached insert slot bottom, rotate upper section pile, make the bottom end of L type clamping plate rotate to the inside of rotating groove, the advantage of reducing the height of upper section pile, make the bottom end of L type clamping plate embed in the inside of locking groove, finally insert from the outside of four bolt holes two in turn and tighten lock bolt, fix upper section pile assembly, the use amount of bolt is reduced using buckle type connection, connection operation is cumbersome degree reduces, improve construction efficiency simultaneously.

Description

Technical Field

[0001] This utility model relates to the field of inserted prestressed concrete pile technology, and in particular to an inserted prestressed concrete pile. Background Technology

[0002] Concrete piles are piles made of concrete. Prestressed concrete pipe piles have become one of the most widely used pile types in recent years due to their high bearing capacity and guaranteed quality.

[0003] However, in existing technologies, when prestressed concrete piles are inserted into the underground soil, the top of the pile is continuously struck by a pile driver to allow the lower end to penetrate deeper into the ground. When the length of one pile is insufficient, another pile is placed on top of it and then inserted together. However, when prestressed concrete piles are spliced, they are mostly connected by a large number of bolts and other fasteners, which makes the connection operation cumbersome and directly affects the efficiency of the prestressed concrete pile insertion operation. Utility Model Content

[0004] The purpose of this invention is to solve the problems existing in the prior art.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: an insertable prestressed concrete pile, comprising: a lower pile section, wherein a pile tip is fixedly connected to the bottom end of the lower pile section, four L-shaped connecting plates are fixedly connected at equal intervals around the top of the inner cavity of the lower pile section, a pressure head is fixedly connected to the top of the four L-shaped connecting plates, four bolt holes are equidistantly opened around the top of the inner cavity of the lower pile section, and multiple upper pile components are provided at the top of the lower pile section, with connecting components provided at the top of both the lower pile section and the multiple upper pile components.

[0006] Furthermore, the upper pile assembly includes an upper pile, the bottom of which is fixedly connected with four L-shaped clamping plates at equal intervals around the circumference, and each of the four L-shaped clamping plates has a through hole on its side. The top of the inner cavity of the upper pile is fixedly connected with four L-shaped connecting plates at equal intervals around the circumference, and the top of each of the four L-shaped connecting plates is fixedly connected with a pressure head.

[0007] Furthermore, the top of the inner cavity of the upper section pile is provided with four bolt holes that are equidistantly spaced in a circular pattern.

[0008] Furthermore, the connecting assembly includes a fixing ring, the top of which has four circumferentially spaced arc-shaped grooves, one end of each of the four arc-shaped grooves has an insertion groove, the bottom of each of the four insertion grooves has a rotation groove, and the bottom of the other end of each of the four rotation grooves has a locking groove. The inner cavities of the four arc-shaped grooves, the four insertion grooves, the four rotation grooves, and the four locking grooves are interconnected.

[0009] Furthermore, one side of each of the four locking groove cavities is provided with a through hole II, and one side of each of the four arc-shaped groove cavities is provided with a threaded hole. The four through holes II and the four threaded holes are paired together, and anti-loosening bolts are movably embedded inside the four pairs of through holes II and threaded holes.

[0010] Furthermore, the surfaces of the multiple L-shaped plates are correspondingly and movably embedded inside the multiple arc-shaped grooves and multiple locking grooves, and the interior of the lower end of the lowest upper pile is movably sleeved on the surface of the first pressure head, wherein the surfaces of the multiple second pressure heads are correspondingly and movably embedded inside the interior of the lower ends of the multiple upper piles located above them.

[0011] Furthermore, the surfaces of the plurality of fixing rings are correspondingly fixedly embedded inside the tops of the lower pile and the plurality of upper piles, the surfaces of the plurality of anti-loosening bolts are correspondingly movably embedded inside the plurality of through holes II, the surfaces of the plurality of anti-loosening bolts are correspondingly threaded embedded inside the plurality of threaded holes, the plurality of anti-loosening bolts are correspondingly movably embedded inside the plurality of bolt holes II and the plurality of bolt holes I, and the surfaces of the plurality of anti-loosening bolts are correspondingly movably embedded inside the plurality of through holes I.

[0012] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0013] This invention reduces the height of the upper pile assembly, allowing the L-shaped clamping plate to be inserted into the corresponding arc-shaped groove and insertion slot. After the bottom of the L-shaped clamping plate is in contact with the bottom of the insertion slot, the upper pile is rotated so that the bottom end of the L-shaped clamping plate rotates into the rotation slot. This reduces the height of the upper pile and allows the bottom end of the L-shaped clamping plate to be embedded into the locking slot. Finally, the anti-loosening bolts are inserted and tightened sequentially from the outside of the four bolt holes to fix the upper pile assembly. The snap-fit ​​connection reduces the amount of bolts used, simplifies the connection operation, and improves construction efficiency. Attached Figure Description

[0014] Figure 1 A schematic diagram of the overall structure of an insert-type prestressed concrete pile provided by this utility model;

[0015] Figure 2 A schematic diagram of the lower section of an insert-type prestressed concrete pile provided for this utility model;

[0016] Figure 3 A schematic diagram of a connection component for an insert-type prestressed concrete pile provided by this utility model;

[0017] Figure 4 A schematic diagram of the upper section of an insert-type prestressed concrete pile provided for this utility model;

[0018] Figure 5 A top view of the upper section of an insert-type prestressed concrete pile provided by this utility model;

[0019] Figure 6 A partial sectional view of the connection between the upper and lower sections of an insert-type prestressed concrete pile, which is provided for this utility model.

[0020] Legend:

[0021] 1. Lower pile section; 101. Pile tip; 102. L-shaped connecting plate one; 103. Pressure head one; 104. Bolt hole one; 2. Upper pile section assembly; 201. Upper pile section; 202. L-shaped clamping plate; 203. Through hole one; 204. L-shaped connecting plate two; 205. Pressure head two; 206. Bolt hole two; 3. Connecting assembly; 301. Fixing ring; 302. Arc groove; 303. Insertion groove; 304. Rotation groove; 305. Locking groove; 306. Through hole two; 307. Threaded hole; 308. Anti-loosening bolt. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. 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.

[0023] Please see Figure 1-6 This utility model provides a technical solution: an insertable prestressed concrete pile, comprising: a lower pile 1, a pile tip 101 fixedly connected to the bottom end of the lower pile 1, four L-shaped connecting plates 102 fixedly connected at equal intervals around the top of the inner cavity of the lower pile 1, a pressure head 103 fixedly connected to the top of the four L-shaped connecting plates 102, four bolt holes 104 circumferentially and equally spaced through the top of the inner cavity of the lower pile 1, a plurality of upper pile components 2 provided at the top of the lower pile 1, and connecting components 3 provided at the top of both the lower pile 1 and the plurality of upper pile components 2.

[0024] Specifically: The height of the upper pile assembly 2 is lowered so that the L-shaped clamping plate 202 is inserted into the corresponding arc-shaped groove 302 and insertion groove 303. After the bottom of the L-shaped clamping plate 202 is in contact with the bottom of the insertion groove 303, the upper pile 201 is rotated so that the bottom end of the L-shaped clamping plate 202 rotates into the rotation groove 304. This lowers the height of the upper pile 201 so that the bottom end of the L-shaped clamping plate 202 is embedded into the locking groove 305. Finally, the anti-loosening bolts 308 are inserted and tightened from the outside of the four bolt holes 206 to fix the upper pile assembly 2. The snap-fit ​​connection reduces the amount of bolts used, reduces the complexity of the connection operation, and improves construction efficiency. The pile bodies of the lower pile 1 and the upper pile 201 are internally wrapped with high-strength steel bars and externally wrapped with high-strength concrete, which is existing technology. The specific structure will not be described here.

[0025] In one embodiment, the upper pile assembly 2 includes an upper pile 201. The bottom end of the upper pile 201 is fixedly connected with four L-shaped clamping plates 202 at equal intervals around the circumference. The sides of the bottom ends of the four L-shaped clamping plates 202 are all provided with through holes 203. The top of the inner cavity of the upper pile 201 is fixedly connected with four L-shaped connecting plates 204 at equal intervals around the circumference. The top ends of the four L-shaped connecting plates 204 are fixedly connected with pressure heads 205.

[0026] Specifically, such as Figure 2 As shown: The interior of the upper pile 201 is hollow to reduce costs.

[0027] In one embodiment, the top of the inner cavity of the upper pile 201 is provided with four bolt holes 206 that are circumferentially equidistant.

[0028] Specifically, such as Figure 5 As shown: the opening size of the outer end of bolt hole 104 and bolt hole 206 is slightly larger than its internal size. After the anti-loosening bolt 308 is installed, the head of the anti-loosening bolt 308 can be movably embedded in one end of bolt hole 104 and pressure head 205.

[0029] In one embodiment, the connecting component 3 includes a retaining ring 301. The top of the retaining ring 301 has four arc-shaped grooves 302 equidistantly spaced around its circumference. One end of each of the four arc-shaped grooves 302 has an insertion groove 303. The bottom end of each of the four insertion grooves 303 has a rotating groove 304. The bottom of the other end of each of the four rotating grooves 304 has a locking groove 305. The inner cavities of the four arc-shaped grooves 302, the four insertion grooves 303, the four rotating grooves 304, and the four locking grooves 305 are interconnected.

[0030] Specifically, such as Figure 3As shown: the arc-shaped groove 302 and the insertion groove 303 provide installation space for the insertion of the L-shaped card plate 202. After the L-shaped card plate 202 rotates to the appropriate position, it will be embedded in the locking groove 305 under its own weight. The locking groove 305 can fix the L-shaped card plate 202 and prevent it from rotating.

[0031] In one embodiment, a through hole 306 is provided through one side of the inner cavity of the four locking grooves 305, and a threaded hole 307 is provided through one side of the inner cavity of the four arc-shaped grooves 302. The four through holes 306 and the four threaded holes 307 are paired together, and anti-loosening bolts 308 are movably embedded inside the four sets of through holes 306 and threaded holes 307.

[0032] Specifically, such as Figure 6 As shown: The L-shaped clamping plate 202 is fixed inside the connecting assembly 3 again by the anti-loosening bolt 308, which improves stability.

[0033] In one embodiment, the surfaces of multiple L-shaped plates 202 are correspondingly and movably embedded inside multiple arc-shaped grooves 302 and multiple locking grooves 305, and the interior of the lower end of the lowest upper section pile 201 is movably sleeved on the surface of the first pressure head 103, wherein the surfaces of multiple second pressure heads 205 are correspondingly and movably embedded inside the interior of the lower ends of multiple upper section piles 201 located above them.

[0034] Specifically, such as Figure 1 As shown: The interior of the upper pile 201 is hollow, which provides insertion space for the first pressure head 103 and the second pressure head 205.

[0035] In one embodiment, the surfaces of multiple fixing rings 301 are correspondingly fixedly embedded inside the top ends of the lower pile 1 and multiple upper piles 201, the surfaces of multiple anti-loosening bolts 308 are correspondingly movably embedded inside the multiple through holes 306, the surfaces of multiple anti-loosening bolts 308 are correspondingly threadedly embedded inside the multiple threaded holes 307, the multiple anti-loosening bolts 308 are correspondingly movably embedded inside the multiple bolt holes 206 and multiple bolt holes 104, and the surfaces of multiple anti-loosening bolts 308 are correspondingly movably embedded inside the multiple through holes 203.

[0036] Specifically, such as Figure 6 As shown: The L-shaped clamping plate 202 is fixed to the inside of the connecting assembly 3 and the lower pile 1 or the upper pile 201 again by the anti-loosening bolt 308, thereby improving the stability of the connection between the upper pile assembly 2 and the lower pile 1.

[0037] Working principle: With the assistance of a crane, the lower pile section 1 is lifted and vertically inserted into the clamping mechanism of the pile driver. The verticality of the pile is adjusted by the two-way theodolite or plumb line of the pile driver, and the pile tip 101 is aligned with the center of the pile position on the ground. The pile driving cylinder is activated, and the clamping device tightly holds the lower pile section 1, pressing it smoothly into the soil. The verticality is continuously observed during the process, and any deviations are corrected in a timely manner.

[0038] When the lower pile 1 is pressed down to about 0.8 to 1.0 meters above the ground, stop pressing the pile and prepare to connect the piles. Clean the top of the lower pile 1, lift the upper pile assembly 2, and keep its lower end perpendicular to the lower pile 1. Align the L-shaped clamping plate 202 with the arc-shaped groove 302 and the insertion groove 303, lower the height of the upper pile assembly 2, and insert the L-shaped clamping plate 202 into the corresponding arc-shaped groove 302 and insertion groove 303. After the bottom of the L-shaped clamping plate 202 is in contact with the bottom of the insertion groove 303, rotate the upper pile 201 so that the bottom end of the L-shaped clamping plate 202 rotates into the rotation groove 304. Lower the height of the upper pile 201 so that the bottom end of the L-shaped clamping plate 202 is embedded in the locking groove 305. Finally, insert and tighten the anti-loosening bolts 308 from the outside of the four bolt holes 206 in sequence to fix the upper pile assembly 2.

[0039] This design of the inserted prestressed concrete pile uses a snap-fit ​​connection, which reduces the amount of bolts used, simplifies the connection process, and improves construction efficiency.

[0040] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. An insert-type prestressed concrete pile, characterized in that, include: The lower section pile (1) has a pile tip (101) fixedly connected to its bottom end. The top of the inner cavity of the lower section pile (1) is fixedly connected with four L-shaped connecting plates (102) at equal intervals around the circumference. The top of the four L-shaped connecting plates (102) is fixedly connected with a pressure head (103). The top of the inner cavity of the lower section pile (1) has four bolt holes (104) at equal intervals around the circumference. The top of the lower section pile (1) is provided with multiple upper section pile components (2). The top of the lower section pile (1) and the multiple upper section pile components (2) are both provided with connecting components (3). The upper pile assembly (2) includes an upper pile (201), and four L-shaped clamping plates (202) are fixedly connected at equal intervals around the bottom of the upper pile (201). Each of the four L-shaped clamping plates (202) has a through hole (203) on its side at the bottom. The connecting assembly (3) includes a fixing ring (301). The top of the fixing ring (301) is provided with four arc-shaped grooves (302) at equal intervals around the circumference. One end of the inner cavity of each of the four arc-shaped grooves (302) is provided with an insertion groove (303). The bottom end of one side of the inner cavity of each of the four insertion grooves (303) is provided with a rotating groove (304). The bottom of the other end of the inner cavity of each of the four rotating grooves (304) is provided with a locking groove (305).

2. An inserted prestressed concrete pile according to claim 1, characterized in that: The top of the inner cavity of the upper section pile (201) is fixedly connected with four L-shaped connecting plates (204) at equal intervals around the circumference, and the top of the four L-shaped connecting plates (204) is fixedly connected with pressure heads (205).

3. An inserted prestressed concrete pile according to claim 1, characterized in that: The top of the inner cavity of the upper section pile (201) has four bolt holes (206) that are circumferentially equidistant.

4. An inserted prestressed concrete pile according to claim 1, characterized in that: The inner cavities of the four arc-shaped grooves (302), four insertion grooves (303), four rotating grooves (304) and four locking grooves (305) are connected to each other.

5. An inserted prestressed concrete pile according to claim 1, characterized in that: One side of each of the four locking grooves (305) has a through hole (306), and one side of each of the four arc-shaped grooves (302) has a threaded hole (307). The four through holes (306) and the four threaded holes (307) are paired together, and anti-loosening bolts (308) are movably embedded inside the four pairs of through holes (306) and threaded holes (307).

6. An inserted prestressed concrete pile according to claim 2, characterized in that: The surfaces of the multiple L-shaped plates (202) are correspondingly and movably embedded inside the multiple arc-shaped grooves (302) and multiple locking grooves (305). The interior of the lower end of the lowest upper section pile (201) is movably sleeved on the surface of the first pressure head (103), wherein the surfaces of the multiple second pressure heads (205) are correspondingly and movably embedded inside the interior of the lower ends of the multiple upper section piles (201) located above them.

7. An inserted prestressed concrete pile according to claim 5, characterized in that: The surfaces of multiple fixing rings (301) are fixedly embedded in the top of the lower pile (1) and multiple upper piles (201). The surfaces of multiple anti-loosening bolts (308) are movably embedded in the interior of multiple through holes (306). The surfaces of multiple anti-loosening bolts (308) are threadedly embedded in the interior of multiple threaded holes (307). The surfaces of multiple anti-loosening bolts (308) are movably embedded in the interior of multiple bolt holes (206) and multiple bolt holes (104). The surfaces of multiple anti-loosening bolts (308) are movably embedded in the interior of multiple through holes (203).

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