A connection device for prefabricated piles

Abstract

The present application relates to a connection device for precast piles, belonging to the technical field of precast pile connection, which includes a concrete pile, the pile top of which is evenly distributed with pile head steel bars, a sleeve is provided at one end of the pile head steel bars away from the concrete pile, a first connection hole and a second connection hole connected to the first connection hole are provided on the sleeve, a pile head steel bar swage is fixed at one end of the pile head steel bars away from the concrete pile, and the pile head steel bar swage is stuck in the second connection hole; an anchor steel bar is provided at one side of the sleeve away from the pile head steel bars, a through hole screw is provided at one end of the anchor steel bars close to the sleeve, a third connection hole is provided on the through hole screw, the anchor steel bar passes through the third connection hole, an anchor steel bar swage is fixed at one end of the anchor steel bar close to the pile head steel bars to prevent the anchor steel bar from coming out of the third connection hole, and the through hole screw is inserted into the second connection hole at one end of the sleeve and is detachably connected to the sleeve. The present application has the effect of improving the stability of the connection between the concrete pile and the cap.

Description

Technical Field

[0001] The present application relates to the technical field of prefabricated pile connection, and in particular to a connection device for prefabricated piles. Background Art

[0002] In the connection between the concrete pile and the cap, the connection is usually made through anchor steel bars. A pile end plate is fixed to the top of the concrete pile, and the anchor steel bars are fixed to the pile end plate by welding, and the anchor steel bars are connected to the cap.

[0003] With respect to the above-mentioned related technologies, the inventors believe that there are defects such as high welding quality requirements, long welding time, easy corrosion after welding, and reduced connection quality. Summary of the invention

[0004] In order to improve the stability of the connection between the concrete pile and the cap, the present application provides a connector for a prefabricated pile.

[0005] The present application provides a prefabricated pile connector that adopts the following technical solution:

[0006] A connection device for a prefabricated pile comprises a concrete pile, wherein pile head steel bars are evenly distributed on the pile top of the concrete pile, a sleeve is arranged at one end of the pile head steel bars away from the concrete pile, a first connection hole and a second connection hole connected to the first connection hole are opened on the sleeve, the diameter of the first connection hole is smaller than the diameter of the second connection hole, a pile head steel bar upset is fixed at one end of the pile head steel bar away from the concrete pile, the pile head steel bar passes through the first connection hole, and the pile head steel bar upset is stuck in the second connection hole;

[0007] Anchor steel bars are arranged on the side of the sleeve away from the pile head steel bars, and a through hole screw is arranged on the end of the anchor steel bars close to the sleeve. A third connecting hole is opened on the through hole screw, and the anchor steel bar passes through the third connecting hole. An anchor steel bar swage is fixed on the end of the anchor steel bar close to the pile head steel bars to prevent the anchor steel bar from escaping from the third connecting hole. The through hole screw is inserted into the second connecting hole at the end close to the sleeve and is detachably connected to the sleeve.

[0008] By adopting the above technical solution, when connecting the pile head steel bar and the anchor steel bar, the pile head steel bar is first passed through the first connection hole and the second connection hole, and then the pile head steel bar swage is made, and the steel bar swage is stuck in the second connection hole and cannot be removed from the first connection hole. Then, the end of the anchor steel bar away from the anchor steel bar swage is inserted into the third connection hole, the lower end of the through hole screw is connected to the sleeve, and the through hole screw is fixed to the sleeve, thereby fixing the pile head steel bar and the anchor steel bar. By detachably connecting the through hole screw and the sleeve, the anchor steel bar and the pile head steel bar are fixed, and the anchor steel bar is not fixed by welding, the stability of the anchor steel bar is improved, thereby improving the stability of the connection between the concrete pile and the cap.

[0009] Optionally, an outer wall of the lower end portion is provided with an outer thread, an inner wall of the second connecting hole is provided with an inner thread, and the outer wall of the lower end portion is threadedly connected to the inner wall of the second connecting hole.

[0010] By adopting the above technical solution, when fixing the through hole screw and the sleeve, the lower end is threadedly connected with the sleeve, which facilitates the installation of the through hole screw and the sleeve.

[0011] Optionally, a fixing assembly for fixing the lower end is provided on the outer wall of the sleeve, the fixing assembly includes a fixing block, an insertion rod and an abutment block, the fixing block is fixed on the outer wall of the sleeve, a mounting hole is provided on a side of the fixing block close to the sleeve, a positioning block is fixed on an end of the upper end close to the sleeve, a positioning groove is provided on a side of the sleeve close to the upper end, a first plug hole connected to the positioning groove is provided on the outer wall of the sleeve, and a second plug hole aligned with the first plug hole is provided on the positioning block;

[0012] The insertion rod passes through the fixed block and the mounting hole. The end of the insertion rod close to the positioning block passes through the first insertion hole and is plugged into the second insertion hole. The abutment block is located in the mounting hole and fixed to the insertion rod. A spring that is sleeved with the insertion rod is provided in the mounting hole. The spring is fixed between the abutment block and the hole wall of the mounting hole away from the abutment block.

[0013] By adopting the above technical solution, when installing the through hole screw and the sleeve, first insert the lower end into the second connecting hole. When inserting, pull the end of the insertion rod away from the sleeve so that the end of the insertion rod close to the sleeve extends into the installation hole. At this time, the spring is compressed. When the positioning block is inserted into the positioning groove, the first socket is aligned with the second socket. At this time, the insertion rod is loosened, and the end of the insertion rod close to the sleeve passes through the first socket and is inserted into the second socket, thereby fixing the sleeve and the positioning block, and fixing the sleeve and the through hole screw through the fixing assembly, which facilitates the installation of the through hole screw.

[0014] Optionally, one end of the insertion rod close to the sleeve is arc-shaped.

[0015] By adopting the above technical solution, the end of the plug rod close to the sleeve is arc-shaped, and when the socket is inserted into the first socket and the second socket, it is convenient for the plug rod to enter and easy to install.

[0016] Optionally, a plurality of fixing components are provided, and the plurality of fixing components are evenly arranged along the circumferential direction of the sleeve.

[0017] By adopting the above technical solution, multiple fixations work together to fix the through-hole screw and the sleeve, making the connection between the through-hole screw and the sleeve more stable, thereby making the anchoring steel bar more stable.

[0018] Optionally, a plurality of countersunk holes are provided on a side of the upper end away from the lower end and are arranged along the circumferential direction of the upper end, each countersunk hole corresponds to a bolt, and the bolt passes through the upper end and is threadedly connected to the sleeve.

[0019] By adopting the above technical solution, after the through hole screw is threadedly connected to the sleeve and the through hole screw is tightened, the bolt is passed through the countersunk hole and threadedly connected to the sleeve, thereby further fixing the through hole screw and the sleeve.

[0020] Optionally, a pad is provided in the second connection hole, and the pad is located between the pile head steel bar upswept head and the anchor steel bar upswept head.

[0021] By adopting the above technical solution, the pile head steel bar upsetting head and the anchor steel bar upsetting head are provided with pads, and the provision of the pads can make the lower end portion tightened.

[0022] Optionally, a bending section is provided at one end of the anchoring steel bar away from the pile head steel bar.

[0023] By adopting the above technical solution, a bent section is provided at one end of the anchor steel bar away from the pile head steel bar. The bent section can strengthen the connection strength between the anchor steel bar and the pedestal, and can reduce the amount of pedestal steel bar used. This is suitable for situations where the pedestal poured concrete is relatively thin.

[0024] In summary, the present application includes at least one of the following beneficial technical effects:

[0025] 1. The anchor steel bar is fixed to the pile head steel bar by detachably connecting the through hole screw and the sleeve, and the anchor steel bar is not fixed by welding, which improves the stability of the anchor steel bar and thus improves the stability of the connection between the concrete pile and the cap;

[0026] 2. Multiple fixations work together to fix the through-hole screw and the sleeve, making the connection between the through-hole screw and the sleeve more stable, thereby making the anchoring steel bar more stable;

[0027] 3. When fixing the through-hole screw and the sleeve, connect the lower end with the sleeve thread to facilitate the installation of the through-hole screw and the sleeve. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the overall structure of Example 1 of the present application.

[0029] Figure 2 It embodies the connection relationship between the through hole screw and the sleeve in the first embodiment.

[0030] Figure 3 It is a structural diagram embodying the second embodiment of the present application.

[0031] Figure 4 It is a structural diagram embodying the third embodiment of the present application.

[0032] Figure 5 It is a schematic diagram of the fixing component in the third embodiment of the present application.

[0033] Explanation of the accompanying drawings: 1. concrete pile; 2. pile head steel bar; 21. pile head steel bar swage; 3. sleeve; 31. first connecting hole; 32. second connecting hole; 33. positioning groove; 34. first plug hole; 4. through hole screw; 41. upper end; 411. countersunk hole; 42. lower end; 43. third connecting hole; 5. anchor steel bar; 51. anchor steel bar swage; 52. bending section; 6. spacer; 7. bolt; 8. fixing assembly; 81. fixing block; 811. mounting hole; 82. insertion rod; 821. connecting block; 83. abutment block; 84. spring; 85. positioning block; 851. second plug hole. DETAILED DESCRIPTION

[0034] The following is combined with Figure 1-5 This application is described in further detail.

[0035] The embodiment of the present application discloses a connection device for prefabricated piles.

[0036] Embodiment 1

[0037] Reference Figure 1 The connection device includes a concrete pile 1, a plurality of pile head steel bars 2 are fixed to the top of the concrete pile 1, the pile head steel bars 2 are cast together with the concrete pile 1, and the top of the pile head steel bars 2 extends out of the top of the concrete pile 1. The concrete pile 1 is a square concrete pile, and the plurality of pile head steel bars 2 are evenly arranged on the top surface of the concrete pile 1.

[0038] Reference Figure 1 and Figure 2 A sleeve 3 is installed at one end of the pile head steel bar 2 away from the concrete pile 1. Two holes are arranged inside the sleeve 3. The two holes are respectively a first connection hole 31 and a second connection hole 32. The first connection hole 31 is connected with the second connection hole 32. The diameter of the first connection hole 31 is smaller than the diameter of the second connection hole 32. The first connection hole 31 is located at one end close to the pile head steel bar 2. A pile head steel bar upsetting head 21 is arranged at one end of the pile head steel bar 2 away from the concrete pile 1. The pile head steel bar 2 and the pile head steel bar upsetting head 21 are integrally formed. The diameter of the pile head steel bar upsetting head 21 is larger than the diameter of the pile head steel bar 2. The pile head steel bar upsetting head 21 is located in the second connection hole 32. The end of the pile head steel upsetting head 21 close to the pile head steel bar 2 is in a frustum shape.

[0039] During construction, the pile head steel bar 2 is first passed through the first connection hole 31 and the second connection hole 32, and then the pile head steel bar upset 2 is made. After making, the pile head steel bar upset 21 is stuck in the second connection hole 32, and the pile head steel bar upset 2 cannot fall out of the first connection hole 31.

[0040] A through-hole screw 4 is provided at one end of the sleeve away from the concrete pile 1. The through-hole screw 4 includes an upper end 41 and a lower end 42. The upper end 41 and the lower end 42 are integrally formed. The upper end 41 is hexagonal and the lower end 42 is circular. A third connecting hole 43 is provided on the through-hole screw 4. The third connecting hole 43 passes through the upper end 41 and the lower end 42. The upper end 41 is located above the sleeve 3. An external thread is provided on the outer wall of the lower end 42. An internal thread is provided on the hole wall of the second connecting hole 32. The lower end 42 is threadedly connected to the sleeve 3.

[0041] An anchoring steel bar 5 is arranged above the pile head steel bar 2, and an anchoring steel bar upset 51 is arranged at one end of the anchoring steel bar 5 close to the pile head steel bar 2. The anchoring steel bar upset 51 is integrally formed with the anchoring steel bar 5, and the diameter of the anchoring steel bar upset 51 is larger than the diameter of the anchoring steel bar 5. The anchoring steel bar upset 51 is located in the second connection hole 32. During installation, the anchoring steel bar 5 passes through the end of the lower end 42 away from the upper end 41, and the anchoring steel bar upset 51 is stuck at the bottom of the lower end 42, and then the lower end 42 is threadedly connected with the sleeve 3, and the lower end 42 is tightened, so that the through hole screw 4 is fixed to the sleeve 3.

[0042] A pad 6 is arranged between the anchoring steel bar upset 51 and the pile head steel bar upset 21, and both the anchoring steel bar upset 51 and the pile head steel bar upset 21 are in contact with the pad 6. When the lower end 42 is tightened, the anchoring steel bar upset 51 squeezes the pad 6, so that the threaded connection between the lower end 42 and the sleeve 3 can be tightened.

[0043] The end of the anchor steel bar 5 away from the pile head steel bar 2 is provided with a bent section 52. The provision of the bent section 52 can strengthen the connection strength between the anchor steel bar 5 and the pedestal, can reduce the amount of pedestal steel bars used, and is suitable for situations where the pedestal poured concrete is relatively thin.

[0044] The implementation principle of a connection device for prefabricated piles in an embodiment of the present application is as follows: during construction, the first connection hole 31 of the sleeve 3 is facing downward, the sleeve 3 is sleeved on the pile head steel bar 2, and then the pile head steel bar upswept head 21 is made, so that the pile head steel bar upswept head 21 is stuck in the second connection hole 32 and cannot be detached from the first connection hole 31.

[0045] Then place the pad 6 into the sleeve 3, and then insert the end of the anchor steel bar 5 away from the anchor steel bar swage 51 into the lower end 42 and extend it from the upper end 41, then thread the through hole screw 4 and the sleeve 3, and clamp the anchor steel bar swage 51 in the second connecting hole 32. After tightening the through hole screw 4, the anchor steel bar 5 is fixed to the pile head steel bar 2, and finally the anchor steel bar 5 is connected to the base.

[0046] Embodiment 2

[0047] Reference Figure 3The difference from the first embodiment is that a plurality of countersunk holes 411 are provided on the side of the upper end portion 41 away from the lower end portion 42, and the countersunk holes 411 are evenly arranged along the circumferential direction of the upper end portion 41. A bolt 7 is provided in each countersunk hole 411. A plurality of locking holes are evenly provided on the side of the sleeve 3 close to the lower end portion 42. When the lower end portion 42 is fixed to the sleeve 3, the locking hole is aligned with the countersunk hole 411. The bolt 7 passes through the countersunk hole 411 and is threadedly connected to the locking hole. The bolt 7 further strengthens the connection between the upper end portion 41 and the sleeve 3, and increases the stability of the connection between the anchor steel bar 5 and the pile head steel bar 2.

[0048] Embodiment 3

[0049] Reference Figure 4 and Figure 5 , which is different from the first embodiment in that the lower end portion 42 is fixed to the sleeve 3 by a fixing assembly 8, and when the through hole screw 4 is installed, the lower end portion 42 is first inserted into the sleeve 3 and then fixed by the fixing assembly 8. The sleeve 3 is provided with a plurality of fixing assemblies 8 along the circumferential direction.

[0050] The fixing assembly 8 includes a fixing block 81 and an insert rod 82. The fixing block 81 is fixed on the outer wall of the sleeve 3. A mounting hole 811 is provided on the side wall where the fixing block 81 contacts the sleeve 3. The insert rod 82 passes through the fixing block 81. The insert rod 82 passes through the mounting hole 811. A connecting block 821 is fixed to the end of the insert rod 82 away from the sleeve 3. A contact block 83 is provided in the mounting hole 811. The contact block 83 is fixed to the insert rod 82. A spring 84 is provided in the mounting hole 811. The spring 84 is sleeved on the insert rod 82. One end of the spring 84 is fixed to the contact block 83, and the other end of the spring 84 is fixed to the hole wall of the mounting hole 811 away from the contact block 83.

[0051] The fixing assembly 8 also includes a positioning block 85, which is fixed on the side of the upper end 41 close to the sleeve 3. The side of the sleeve 3 close to the upper end 41 is provided with a positioning groove 33, and the positioning block 85 is plugged into the positioning groove 33. A first plug hole 34 is provided on the outer wall of the sleeve 3, and the axis of the first plug hole 34 is coaxial with the axis of the insertion rod 82, and the first plug hole 34 is connected to the positioning groove 33. A second plug hole 851 is provided on the side of the positioning block 85 close to the first plug hole 34. When the positioning block 85 is inserted into the positioning groove 33, the axis of the second plug hole 851 is aligned with the axis of the first plug hole 34.

[0052] Under the action of the elastic force of the spring 84, the abutment block 83 abuts against the outer wall of the sleeve 3, and the end of the insertion rod 82 close to the sleeve 3 passes through the first socket 34 and is plugged into the second socket 851, fixing the positioning block 85 to the sleeve 3, thereby fixing the lower end 42 to the sleeve 3.

[0053] When the positioning block 85 is inserted into the positioning groove 33, first pull the connecting block 821 to compress the spring 84 so that the end of the insertion rod 82 close to the sleeve 3 enters the mounting hole 811, and then insert the positioning block 85 into the positioning groove 33. After that, release the connecting block 821. Under the action of the elastic force of the spring 84, the abutment block 83 drives the insertion rod 82 to move in the direction close to the sleeve 3. The insertion rod 82 passes through the first socket 34 and is plugged into the second socket 851, thereby fixing the positioning block 85.

[0054] The end of the plug rod 82 near the sleeve 3 is arc-shaped, which facilitates the insertion of the plug rod 82 into the second plug hole 851. If the second plug hole 851 is not completely aligned with the axis of the first plug hole 34, the plug rod 82 can also be smoothly inserted into the second plug hole 851 because the end of the plug rod 82 near the sleeve 3 is arc-shaped.

[0055] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A connection device for prefabricated piles, comprising a concrete pile (1), characterized in that: The pile top of the concrete pile (1) is evenly distributed with pile head steel bars (2); a sleeve (3) is provided at one end of the pile head steel bar (2) away from the concrete pile (1); a first connection hole (31) and a second connection hole (32) connected to the first connection hole (31) are provided on the sleeve (3); the diameter of the first connection hole (31) is smaller than the diameter of the second connection hole (32); a pile head steel bar upset (21) is fixed at one end of the pile head steel bar (2) away from the concrete pile (1); the pile head steel bar (2) passes through the first connection hole (31); and the pile head steel bar upset (21) is stuck in the second connection hole (32); An anchoring steel bar (5) is arranged on a side of the sleeve (3) away from the pile head steel bar (2), and an end of the anchoring steel bar (5) close to the sleeve (3) is provided with a through-hole screw (4), the through-hole screw (4) comprises an upper end (41) and a lower end (42), and a third connecting hole (43) is formed on both the upper end (41) and the lower end (42), and the anchoring steel bar (5) passes through the third connecting hole (43), and an anchoring steel bar swage (51) is fixed to one end of the anchoring steel bar (5) close to the pile head steel bar (2) to prevent the anchoring steel bar (5) from falling out of the third connecting hole (43), and one end of the lower end (42) close to the sleeve (3) is inserted into the second connecting hole (32) and is detachably connected to the sleeve (3); The outer wall of the lower end portion (42) is provided with an external thread, the inner wall of the second connecting hole (32) is provided with an internal thread, and the outer wall of the lower end portion (42) is threadedly connected to the inner wall of the second connecting hole (32); A fixing assembly (8) for fixing the lower end portion (42) is arranged on the outer wall of the sleeve (3), the fixing assembly (88) comprising a fixing block (81), an insert rod (82) and an abutment block (83), the fixing block (81) being fixed on the outer wall of the sleeve (3), a mounting hole (811) being provided on a side of the fixing block (81) close to the sleeve (3), a positioning block (85) being fixed on an end of the upper end portion (41) close to the sleeve (3), a positioning groove (33) being provided on a side of the sleeve (3) close to the upper end portion (41), a first plug hole (34) being provided on the outer wall of the sleeve (3) and being connected to the positioning groove (33), and a second plug hole (851) being provided on the positioning block (85) and being aligned with the first plug hole (34); The insertion rod (82) passes through the fixing block (81) and passes through the mounting hole (811); one end of the insertion rod (82) close to the positioning block (85) passes through the first insertion hole (34) and is plugged into the second insertion hole (851); the abutment block (83) is located in the mounting hole (811) and fixed to the insertion rod (82); a spring (84) sleeved with the insertion rod (82) is provided in the mounting hole (811); the spring (84) is fixed between the abutment block (83) and a hole wall of the mounting hole (811) away from the abutment block (83).

2. A prefabricated pile connection device according to claim 1, characterized in that: One end of the insertion rod (82) close to the sleeve (3) is in an arc shape.

3. A prefabricated pile connection device according to claim 1 or 2, characterized in that: A plurality of the fixing assemblies (8) are provided, and the plurality of fixing assemblies (8) are evenly arranged along the circumferential direction of the sleeve (3).

4. A prefabricated pile connection device according to claim 1, characterized in that: A plurality of countersunk holes (411) are provided on a side of the upper end portion (41) away from the lower end portion (42), and are arranged along the circumferential direction of the upper end portion (41). Each countersunk hole (411) corresponds to a bolt (7). The bolt (7) passes through the upper end portion (41) and is threadedly connected to the sleeve (3).

5. A prefabricated pile connection device according to claim 1, characterized in that: A cushion block (6) is provided in the second connection hole (32), and the cushion block (6) is located between the pile head steel bar upsetting head (21) and the anchor steel bar upsetting head (51).

6. A prefabricated pile connection device according to claim 5, characterized in that: A bent section (52) is provided at one end of the anchor steel bar (5) away from the pile head steel bar (2).

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