Connecting device of PHC pipe pile top and bearing platform for engineering construction

Abstract

The utility model relates to the field of connecting devices, in particular to a connecting device of a PHC pipe pile top and a bearing platform for engineering construction. Comprising a sleeve, the bottom of the sleeve is of an open structure, a mounting groove is formed in the center of the top of the sleeve, two sets of first threaded holes are symmetrically formed in the outer wall of the sleeve, each set of first threaded holes communicate with the mounting groove, and a mounting column is arranged above the sleeve; the bottom of the mounting column is arranged in the mounting groove, two sets of second threaded holes are symmetrically formed in the bottom of the outer wall of the mounting column, two sets of first screws are symmetrically arranged at the two ends of the sleeve, and the output end of each set of first screws penetrates through one set of first threaded holes and then is in threaded connection into one set of second threaded holes. The embodiment of the utility model can be assembled and disassembled, so that the later maintenance, inspection or replacement of damaged parts becomes easier, and large-scale disassembly work is not needed, thereby saving time and cost and improving the flexibility of engineering.

Description

Technical Field

[0001] The utility model belongs to the technical field of connection devices, in particular to a connection device between a PHC pipe pile top and a cap used in engineering construction. Background Art

[0002] PHC pipe piles, that is, prestressed high-strength concrete pipe piles, have a high bearing capacity and are generally widely used in modern urban infrastructure construction. At present, the top of the PHC pipe pile needs to be connected to the bottom of the pedestal during construction. When connecting the top of the PHC pipe pile and the pedestal, the operator generally installs a support plate inside the PHC pipe pile, then welds steel bars on top of the support plate, and connects it to the pedestal through the steel bars. Finally, concrete is poured into the interior of the PHC pipe pile. After the concrete solidifies, the connection and fixation effect of the top of the PHC pipe pile and the pedestal are achieved.

[0003] A search revealed a prior art Chinese patent application numbered CN220364987U, with a grant announcement date of January 19, 2024, that discloses a connection device for the top of a PHC pile and a cap. The device comprises an outer sleeve that fits over the top of the PHC pile, a sealing plate secured to the top of the outer sleeve, and a transverse support plate disposed within the outer sleeve, the lower surface of which abuts against the top of the PHC pile. A vertical rod is disposed on the upper surface of the transverse support plate at the center of the circle, and a threaded section is disposed on the outer wall of the upper half of the vertical rod, which is fitted with a positioning nut. This embodiment is highly versatile.

[0004] However, the device still has the following defects: the above embodiment does not have the effect of disassembly and installation. If it cannot be installed and disassembled, it will make subsequent maintenance, inspection or replacement of damaged parts difficult, requiring large-scale disassembly, thereby increasing time and cost and reducing project flexibility. Utility Model Content

[0005] In response to the above problems, the present invention provides a connection device between the top of a PHC pipe pile and a cap for engineering construction, comprising a sleeve, the bottom of which is an open structure, a mounting groove being provided at the center of the top of the sleeve, and two groups of first threaded holes being symmetrically provided on the outer wall of the sleeve, each group of first threaded holes being connected to the mounting groove;

[0006] A mounting post is provided above the sleeve, and the bottom of the mounting post is placed in the mounting groove. Two groups of second threaded holes are symmetrically provided at the bottom of the outer wall of the mounting post, and two groups of first screws are symmetrically provided at both ends of the sleeve. The output end of each group of the first screws passes through one of the first threaded holes and is threadedly connected to one of the second threaded holes.

[0007] Furthermore, a PHC pile is provided below the sleeve, and the top of the PHC pile is placed in the sleeve.

[0008] Furthermore, a fixing groove is provided on the top of each group of the mounting posts, and two groups of third threaded holes are symmetrically provided on the top of the outer wall of the mounting posts, and each group of the third threaded holes is communicated with the fixing groove.

[0009] Furthermore, a group of pedestal steel bars are provided above each group of the installation columns, and the bottom of each group of the pedestal steel bars is placed in a fixing groove.

[0010] Furthermore, two groups of second screws are symmetrically provided at both ends of the installation column, and the output ends of each group of the second screws pass through the third threaded holes and are attached to the outer wall of the base reinforcement.

[0011] Furthermore, a movable plate is provided in the sleeve, the outer wall of the movable plate slides on the inner wall of the sleeve, a plurality of rotating grooves are provided at the bottom of the movable plate, and a plurality of buffer mechanisms are provided in a circular array above the movable plate.

[0012] Furthermore, the buffer mechanism includes a fixed column, the bottom of the fixed column is installed on the top of the movable plate, and the top of the fixed column is provided with a movable groove.

[0013] Furthermore, a spring is provided in the movable groove, the bottom of the spring is mounted on the bottom inner wall of the fixed column, a movable column is mounted on the top of the fixed column, and the output end of the movable column passes through the movable groove and is mounted on the top inner wall of the sleeve.

[0014] The beneficial effects of the utility model are:

[0015] 1. Turning the first screw to remove the second threaded hole and the first threaded hole can separate the sleeve from the mounting column and make it removable, making subsequent maintenance, inspection or replacement of damaged parts easier without large-scale dismantling work, thereby saving time and cost and improving project flexibility.

[0016] 2. The buffer mechanism set between the sleeve and the movable plate plays a buffering role. When the movable column moves in the movable groove, the spring is squeezed and stretched, which can effectively absorb and alleviate the impact force from the foundation, thereby protecting the connection device and PHC piles from damage and improving the safety and stability of the entire engineering structure.

[0017] Other features and advantages of the present invention will be described in the following description, and in part will become apparent from the description, or understood by practicing the present invention. The purpose and other advantages of the present invention can be achieved and obtained by the structures indicated in the description, claims and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following is a brief introduction to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0019] Figure 1 Shows a schematic structural diagram of a connecting device according to an embodiment of the present utility model;

[0020] Figure 2 A schematic diagram of disassembling a connecting device according to an embodiment of the present utility model is shown;

[0021] Figure 3 A schematic cross-sectional view of a connecting device according to an embodiment of the present utility model is shown;

[0022] Figure 4 A schematic structural diagram of a buffer mechanism according to an embodiment of the present utility model is shown.

[0023] In the figure: 1. Sleeve; 2. PHC pile; 3. Mounting groove; 4. First threaded hole; 5. Mounting column; 6. Second threaded hole; 7. First screw; 8. Fixing groove; 9. Third threaded hole; 10. Cap steel bar; 11. Second screw; 12. Moving plate; 13. Buffer mechanism; 131. Fixing column; 132. Moving groove; 133. Spring; 134. Moving column; 14. Rotating groove. DETAILED DESCRIPTION

[0024] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0025] The embodiment of the present invention provides a connection device between the top of a PHC pipe pile and a cap for engineering construction, including a sleeve 1, exemplarily, as shown in FIG. Figure 1 and Figure 2As shown, the bottom of the sleeve 1 is an open structure, a PHC pile 2 is provided below the sleeve 1, the top of the PHC pile 2 is placed in the sleeve 1, a mounting groove 3 is provided at the top center of the sleeve 1, two groups of first threaded holes 4 are symmetrically provided on the outer wall of the sleeve 1, each group of the first threaded holes 4 is connected to the mounting groove 3, a mounting column 5 is provided above the sleeve 1, the bottom of the mounting column 5 is placed in the mounting groove 3, and two groups of second threaded holes 6 are symmetrically provided at the bottom of the outer wall of the mounting column 5, two groups of first screws 7 are symmetrically provided at both ends of the sleeve 1, each group of the first screws 7 The output ends of the mounting columns 5 are threadedly connected to the groups of second threaded holes 6 after passing through one group of first threaded holes 4. A fixing groove 8 is provided on the top of each group of mounting columns 5. Two groups of third threaded holes 9 are symmetrically provided on the top of the outer wall of the mounting columns 5. Each group of the third threaded holes 9 is connected to the fixing groove 8. A group of base cap steel bars 10 is provided above each group of mounting columns 5. The bottom of each group of base cap steel bars 10 is placed in the fixing groove 8. Two groups of second screws 11 are symmetrically provided at both ends of the mounting columns 5. The output ends of each group of the second screws 11 pass through the third threaded holes 9 and are fitted on the outer wall of the base cap steel bars 10.

[0026] For example, Figure 3 and Figure 4 As shown, a movable plate 12 is provided in the sleeve 1, and the outer wall of the movable plate 12 slides and fits on the inner wall of the sleeve 1. A plurality of rotating grooves 14 are provided at the bottom of the movable plate 12, and a plurality of buffer mechanisms 13 are provided in a circular array above the movable plate 12.

[0027] The buffer mechanism 13 includes a fixed column 131, the bottom of which is mounted on the top of the movable plate 12, a movable groove 132 is provided on the top of the fixed column 131, a spring 133 is provided in the movable groove 132, the bottom of the spring 133 is mounted on the bottom inner wall of the fixed column 131, a movable column 134 is mounted on the top of the fixed column 131, and the output end of the movable column 134 passes through the movable groove 132 and is mounted on the top inner wall of the sleeve 1.

[0028] Working principle: Place the bottom of the base steel bar 10 in the fixing groove 8, rotate the second screw 11 through the third threaded hole 9 and fit it on the outer wall of the second screw 11. Two groups of second screws 11 fix the third threaded hole 9, and place the top of the PHC pile 2 in the sleeve 1 and fit it on the bottom of the movable plate 12.

[0029] When the pedestal is impacted, the sleeve 1 descends to cause the movable plate 12 to move inside the sleeve 1. The buffer mechanism 13 arranged between the sleeve 1 and the movable plate 12 plays a buffering role. The movable column 134 moves in the movable groove 132. The spring 133 is squeezed and stretched, which can effectively absorb and alleviate the impact force from the pedestal, thereby protecting the connecting device and the PHC pile 2 from damage, and improving the safety and stability of the entire engineering structure.

[0030] By rotating the first screw 7 to withdraw the second threaded hole 6 and the first threaded hole 4, the sleeve 1 can be separated from the mounting column 5 and can be disassembled, making subsequent maintenance, inspection or replacement of damaged parts easier without the need for large-scale dismantling work, thereby saving time and cost and improving project flexibility.

[0031] The open bottom structure of the sleeve 1 and the mounting groove 3 opened at the center of the top, as well as the design of the first threaded hole 4 and the second threaded hole 6 matched therewith, simplify the assembly process between the top of the PHC pile 2 and the sleeve 1, and improve the construction efficiency.

[0032] It not only enhances the functionality and durability of the connection device, but also improves the convenience of construction and the simplicity of subsequent maintenance.

[0033] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A device for connecting the top of a PHC pipe pile and a cap for engineering construction, comprising a sleeve (1), characterized in that: The bottom of the sleeve (1) is an open structure, a mounting groove (3) is provided at the center of the top of the sleeve (1), and two groups of first threaded holes (4) are symmetrically provided on the outer wall of the sleeve (1), and each group of the first threaded holes (4) is connected to the mounting groove (3); A mounting post (5) is provided above the sleeve (1), and the bottom of the mounting post (5) is placed in the mounting groove (3). Two groups of second threaded holes (6) are symmetrically provided at the bottom of the outer wall of the mounting post (5). Two groups of first screws (7) are symmetrically provided at both ends of the sleeve (1), and the output end of each group of the first screws (7) passes through one group of the first threaded holes (4) and is then threadedly connected to one group of the second threaded holes (6).

2. The device for connecting the top of a PHC pipe pile and a cap for engineering construction according to claim 1, characterized in that: A PHC pipe pile (2) is provided below the sleeve (1), and the top of the PHC pipe pile (2) is placed inside the sleeve (1).

3. The device for connecting the top of a PHC pipe pile and a cap for engineering construction according to claim 2, characterized in that: A fixing groove (8) is provided at the top of each group of the mounting columns (5), and two groups of third threaded holes (9) are symmetrically provided at the top of the outer wall of the mounting columns (5), and each group of the third threaded holes (9) is communicated with the fixing groove (8).

4. The device for connecting the top of a PHC pipe pile and a cap for engineering construction according to claim 1, characterized in that: A group of pedestal steel bars (10) is provided above each group of the installation columns (5), and the bottom of each group of the pedestal steel bars (10) is placed in the fixing groove (8).

5. The device for connecting the top of a PHC pipe pile and a cap for engineering construction according to claim 4, characterized in that: Two sets of second screws (11) are symmetrically arranged at both ends of the mounting column (5), and the output end of each set of the second screws (11) passes through the third threaded hole (9) and is attached to the outer wall of the base steel bar (10).

6. The device for connecting the top of a PHC pipe pile and a cap for engineering construction according to claim 1, characterized in that: A movable plate (12) is provided in the sleeve (1), the outer wall of the movable plate (12) is slidably fitted on the inner wall of the sleeve (1), a plurality of groups of rotating grooves (14) are provided at the bottom of the movable plate (12), and a plurality of groups of buffer mechanisms (13) are provided in a circular array above the movable plate (12).

7. The device for connecting the top of a PHC pipe pile and a cap for engineering construction according to claim 6, characterized in that: The buffer mechanism (13) comprises a fixed column (131), the bottom of the fixed column (131) is mounted on the top of the movable plate (12), and a movable groove (132) is provided on the top of the fixed column (131).

8. The device for connecting the top of a PHC pipe pile and a cap for engineering construction according to claim 7, characterized in that: A spring (133) is provided in the movable groove (132), the bottom of the spring (133) is mounted on the bottom inner wall of the fixed column (131), a movable column (134) is mounted on the top of the fixed column (131), and the output end of the movable column (134) passes through the movable groove (132) and is mounted on the top inner wall of the sleeve (1).

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