1. The utility model provides a connecting device for precast pile, includes concrete pile (1), its characterized in that: pile head reinforcing steel bars (2) are uniformly distributed on the pile top of the concrete pile (1), a sleeve (3) is arranged at one end, away from the concrete pile (1), of each pile head reinforcing steel bar (2), a first connecting hole (31) and a second connecting hole (32) communicated with the first connecting hole (31) are formed in the sleeve (3), the diameter of the first connecting hole (31) is smaller than that of the second connecting hole (32), a pile head reinforcing steel bar heading (2) is fixed at one end, away from the concrete pile (1), of each pile head reinforcing steel bar (2), each pile head reinforcing steel bar (2) penetrates through the first connecting hole (31), and each pile head reinforcing steel bar heading (2) is clamped in the second connecting hole (32);

one side that pile head reinforcing bar (2) was kept away from in sleeve (3) is provided with anchor reinforcing bar (5), the one end that anchor reinforcing bar (5) are close to sleeve (3) is provided with through hole screw (4), through hole screw (4) include upper end (41) and lower tip (42), third connecting hole (43) have all been seted up on upper end (41) and lower tip (42), anchor reinforcing bar (5) run through third connecting hole (43), the one end that anchor reinforcing bar (5) are close to pile head reinforcing bar (2) is fixed with anchor reinforcing bar heading (51) that prevents anchor reinforcing bar (5) and deviate from third connecting hole (43), the one end that lower tip (42) are close to sleeve (3) is inserted in second connecting hole (32) and can dismantle with sleeve (3) and be connected.

2. A connecting device for a precast pile according to claim 1, wherein: the outer wall of the lower end portion (42) is provided with external threads, the inner wall of the second connecting hole (32) is provided with internal threads, and the outer wall of the lower end portion (42) is in threaded connection with the inner wall of the second connecting hole (32).

3. A connecting device for a precast pile according to claim 1, wherein: the fixing device is characterized in that a fixing component (8) for fixing the lower end part (42) is arranged on the outer wall of the sleeve (3), the fixing component (8) comprises a fixing block (81), an inserting rod (82) and an abutting block (83), the fixing block (81) is fixed on the outer wall of the sleeve (3), one side, close to the sleeve (3), of the fixing block (81) is provided with a mounting hole (811), one end, close to the sleeve (3), of the upper end part (41) is fixedly provided with a positioning block (85), one side, close to the upper end part (41), of the sleeve (3) is provided with a positioning groove (33), the outer wall of the sleeve (3) is provided with a first inserting hole (34) communicated with the positioning groove (33), and the positioning block (85) is provided with a second inserting hole (851) aligned with the first inserting hole (34);

inserted bar (82) run through fixed block (81) and pass from mounting hole (811), the one end that inserted bar (82) are close to locating piece (85) runs through first jack (34) and pegs graft with second jack (851), butt piece (83) are located mounting hole (811) and are fixed with inserted bar (82), be provided with in mounting hole (811) spring (84) that cup joints with inserted bar (82), spring (84) are fixed and are kept away from between the pore wall of butt piece (83) with mounting hole (811).

4. A connecting device for a precast pile according to claim 3, wherein: one end of the inserted bar (82) close to the sleeve (3) is arc-shaped.

5. A connecting device for a precast pile according to claim 3 or 4, wherein: the fixed components (8) are arranged in a plurality of numbers, and the fixed components (8) are uniformly arranged along the circumferential direction of the sleeve (3).

6. A connecting device for a precast pile according to claim 2, wherein: one side of the upper end portion (41) far away from the lower end portion (42) is provided with a plurality of counter bores (411) which are all arranged along the circumferential direction of the upper end portion (41), each counter bore (411) corresponds to one bolt (7), and each bolt (7) penetrates through the upper end portion (41) and is in threaded connection with the sleeve (3).

7. A connecting device for a precast pile according to claim 2 or 3, wherein: and a cushion block (6) is arranged in the second connecting hole (32), and the cushion block (6) is positioned between the pile head steel bar upset head (21) and the anchoring steel bar upset head (51).

8. A connecting device for a precast pile according to claim 7, wherein: and a bending section (52) is arranged at one end of the anchoring steel bar (5) far away from the pile head steel bar (2).

Background

In the connection of concrete piles to a cap, the connection is generally made by anchoring steel bars. The top of the concrete pile is fixed with a pile end plate, the anchoring reinforcing steel bars are fixed with the pile end plate through welding, and the anchoring reinforcing steel bars are connected with the bearing platform.

In view of the above-mentioned related technologies, the inventors believe that there are defects that the welding quality is required to be high, the welding time is also long, and the connection quality is reduced due to corrosion after welding.

Disclosure of Invention

In order to improve the stability that concrete pile and cushion cap are connected, this application provides a connecting piece for precast pile.

The application provides a connecting piece for precast pile adopts following technical scheme:

a connecting device for a precast pile comprises a concrete pile, pile head reinforcing steel bars are uniformly distributed on the pile top of the concrete pile, a sleeve is arranged at one end, away from the concrete pile, of the pile head reinforcing steel bars, a first connecting hole and a second connecting hole communicated with the first connecting hole are formed in the sleeve, the diameter of the first connecting hole is smaller than that of the second connecting hole, a pile head reinforcing steel bar heading is fixed at one end, away from the concrete pile, of the pile head reinforcing steel bars, the pile head reinforcing steel bars penetrate through the first connecting hole, and the pile head reinforcing steel bar heading is clamped in the second connecting hole;

one side that the pile head reinforcing bar was kept away from to the sleeve is provided with the anchor reinforcing bar, the anchor reinforcing bar is close to telescopic one end and is provided with the through hole screw, the third connecting hole has been seted up on the through hole screw, the anchor reinforcing bar runs through the third connecting hole, the anchor reinforcing bar is close to the one end of pile head reinforcing bar and is fixed with the anchor reinforcing bar heading that prevents the anchor reinforcing bar and deviate from the third connecting hole, the through hole screw is close to telescopic one end and inserts in the second connecting hole and can dismantle with the sleeve and be connected.

Through adopting above-mentioned technical scheme, when connecting pile head reinforcing bar and anchor reinforcing bar, run through first connecting hole and second connecting hole with the pile head reinforcing bar earlier, then make pile head reinforcing bar upset head, the reinforcing bar upset head card is in the second connecting hole to can not deviate from in following first connecting hole. And then inserting one end of the anchoring steel bar, which is far away from the head of the anchoring steel bar, into the third connecting hole, connecting the lower end part of the through hole screw with the sleeve, and fixing the through hole screw with the sleeve, thereby fixing the pile head steel bar and the anchoring steel bar. Through can dismantling the through-hole screw and be connected with the sleeve to it is fixed with anchor reinforcing bar and pile head reinforcing bar, it is fixed not through the welding with the anchor reinforcing bar, improved the stability of anchor reinforcing bar, thereby improved the stability that concrete pile and cushion cap are connected.

Optionally, the outer wall of the lower end portion is provided with an external thread, the inner wall of the second connecting hole is provided with an internal thread, and the outer wall of the lower end portion is in threaded connection with the inner wall of the second connecting hole.

Through adopting above-mentioned technical scheme, when fixed to the through hole screw and sleeve, with lower tip and sleeve threaded connection, the convenient installation to through hole screw and sleeve.

Optionally, a fixing assembly for fixing the lower end portion is arranged on the outer wall of the sleeve, the fixing assembly comprises a fixing block, an insertion rod and an abutting block, the fixing block is fixed on the outer wall of the sleeve, a mounting hole is formed in one side, close to the sleeve, of the fixing block, a positioning block is fixed at one end, close to the sleeve, of the upper end portion, a positioning groove is formed in one side, close to the upper end portion, of the sleeve, a first insertion hole communicated with the positioning groove is formed in the outer wall of the sleeve, and a second insertion hole aligned with the first insertion;

the inserted bar runs through the fixed block and passes from the mounting hole, and the one end that the inserted bar is close to the locating piece runs through first jack and pegs graft with the second jack, and the butt piece is located the mounting hole and fixed with the inserted bar, is provided with the spring that cup joints with the inserted bar in the mounting hole, and the spring is fixed between the pore wall that butt piece and mounting hole kept away from the butt piece.

Through adopting above-mentioned technical scheme, when installing piercing hole screw and sleeve, insert in the second connecting hole with lower tip earlier, when inserting, the pulling inserted bar is kept away from telescopic one end and is made the inserted bar stretch into the mounting hole near telescopic one end, spring compression this moment, after the constant head tank is inserted to the locating piece, first jack aligns with the second jack, loosen the inserted bar this moment, the inserted bar runs through first jack and inserts in the second jack near telescopic one end, thereby it is fixed with the locating piece to fix the sleeve with the locating piece, it is fixed with piercing hole screw to make things convenient for the installation of piercing hole screw through fixed subassembly.

Optionally, one end of the inserted link close to the sleeve is arc-shaped.

Through adopting above-mentioned technical scheme, the inserted bar is close to telescopic one end and is arc, and when the jack injects the second jack and second jack, make things convenient for the inserted bar to get into, the installation of being convenient for.

Optionally, the fixing assemblies are provided in plurality, and the fixing assemblies are uniformly arranged along the circumferential direction of the sleeve.

Through adopting above-mentioned technical scheme, a plurality of fixed combined action are fixed with the punching screw and sleeve, make punching screw and telescopic being connected more stable to make the anchor reinforcing bar more stable.

Optionally, one side of the upper end portion, which is far away from the lower end portion, is provided with a plurality of counter bores which are arranged along the circumferential direction of the upper end portion, each counter bore corresponds to one bolt, and each bolt penetrates through the upper end portion and is in threaded connection with the sleeve.

Through adopting above-mentioned technical scheme, with through hole screw and sleeve threaded connection and with the through hole screw back of screwing up, run through the counter sink with the bolt and with sleeve threaded connection to further fix through hole screw and sleeve.

Optionally, a cushion block is arranged in the second connecting hole, and the cushion block is located between the pile head steel bar heading and the anchoring steel bar heading.

Through adopting above-mentioned technical scheme, pile head upset steel bar head and anchor upset steel bar head are provided with the cushion, and the setting of cushion can make the lower tip screwed more tightly.

Optionally, one end of the anchoring steel bar, which is far away from the pile head steel bar, is provided with a bending section.

Through adopting above-mentioned technical scheme, the one end that pile head reinforcing bar was kept away from to the anchor reinforcing bar sets up the bending segment, and the joint strength of anchor reinforcing bar and cushion cap can be strengthened to the bending segment, can reduce the use amount of cushion cap reinforcing bar, is applicable to the relatively thin condition of cushion cap concreting.

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

1. the through hole screw is detachably connected with the sleeve, so that the anchoring steel bar is fixed with the pile head steel bar, the anchoring steel bar is fixed without welding, the stability of the anchoring steel bar is improved, and the stability of the connection of the concrete pile and the bearing platform is improved;

2. the plurality of fixing coacts fix the through hole screw and the sleeve, so that the connection between the through hole screw and the sleeve is more stable, and the anchoring steel bar is more stable;

3. when the centering hole screw and the sleeve are fixed, the lower end part is in threaded connection with the sleeve, and the centering hole screw and the sleeve are conveniently installed.

Drawings

Fig. 1 is a schematic overall structure diagram of a first embodiment of the present application.

FIG. 2 shows a connection between a through-hole screw and a sleeve according to an embodiment.

Fig. 3 is a schematic structural diagram showing a second embodiment of the present application.

Fig. 4 is a schematic structural diagram showing a third embodiment of the present application.

Fig. 5 is a schematic view of a fixing assembly according to a third embodiment of the present application.

Description of reference numerals: 1. concrete piles; 2. pile head reinforcing steel bars; 21. pile head reinforcing steel bar heading; 3. a sleeve; 31. a first connection hole; 32. a second connection hole; 33. positioning a groove; 34. a first jack; 4. a through hole screw; 41. an upper end portion; 411. a countersunk hole; 42. a lower end portion; 43. a third connection hole; 5. anchoring the reinforcing steel bars; 51. anchoring a steel bar heading; 52. bending the section; 6. cushion blocks; 7. a bolt; 8. a fixing assembly; 81. a fixed block; 811. mounting holes; 82. inserting a rod; 821. connecting blocks; 83. a butting block; 84. a spring; 85. positioning blocks; 851. a second receptacle.

Detailed Description

The present application is described in further detail below with reference to figures 1-5.

The embodiment of the application discloses connecting device for precast pile.

Example one

Referring to fig. 1, the connecting device comprises a concrete pile 1, a plurality of pile head reinforcing steel bars 2 are fixed at the top end of the concrete pile 1, the pile head reinforcing steel bars 2 are poured together with the concrete pile 1, and the top end of the pile head reinforcing steel bars 2 extends out of the top end of the concrete pile 1. Concrete pile 1 is square concrete pile, and a plurality of pile head reinforcing bars 2 evenly set up on concrete pile 1 top surface.

Referring to fig. 1 and 2, a sleeve 3 is installed at one end of a pile head reinforcing steel bar 2 far away from a concrete pile 1, two holes are formed inside the sleeve 3, the two holes are a first connecting hole 31 and a second connecting hole 32 respectively, the first connecting hole 31 is communicated with the second connecting hole 32, the diameter of the first connecting hole 31 is smaller than that of the second connecting hole 32, and the first connecting hole 31 is located at one end close to the pile head reinforcing steel bar 2. One end of the pile head reinforcing steel bar 2, which is far away from the concrete pile 1, is provided with a pile head reinforcing steel bar upset head 21, the pile head reinforcing steel bar 2 and the pile head reinforcing steel bar upset head 21 are integrally formed, and the diameter of the pile head reinforcing steel bar upset head 21 is larger than that of the pile head reinforcing steel bar 2. The pile head steel bar upset head 21 is positioned in the second connecting hole 32, and one end of the pile head steel bar upset head 21, which is close to the pile head steel bar 2, is in a frustum shape.

During construction, the pile head reinforcing steel bar 2 penetrates through the first connecting hole 31 and the second connecting hole 32, then the pile head reinforcing steel bar heading 2 is manufactured, after the manufacturing is completed, the pile head reinforcing steel bar heading 21 is clamped in the second connecting hole 32, and the pile head reinforcing steel bar heading 2 cannot be separated from the first connecting hole 31.

One end of the sleeve, which is far away from the concrete pile 1, is provided with a through hole screw 4, the through hole screw 4 comprises an upper end portion 41 and a lower end portion 42, the upper end portion 41 and the lower end portion 42 are integrally formed, the upper end portion 41 is hexagonal, and the lower end portion 42 is circular. The through hole screw 4 is provided with a third connecting hole 43, the third connecting hole 43 penetrates through the upper end portion 41 and the lower end portion 42, the upper end portion 41 is located above the sleeve 3, the outer wall of the lower end portion 42 is provided with an external thread, the hole wall of the second connecting hole 32 is provided with an internal thread, and the lower end portion 42 is in threaded connection with the sleeve 3.

The anchor steel bar 5 is arranged above the pile head steel bar 2, the anchor steel bar heading 51 is arranged at one end, close to the pile head steel bar 2, of the anchor steel bar 5, the anchor steel bar heading 51 and the anchor steel bar 5 are integrally formed, the diameter of the anchor steel bar heading 51 is larger than that of the anchor steel bar 5, and the anchor steel bar heading 51 is located in the second connecting hole 32. When the bolt is installed, the anchor bar 5 passes through the end of the lower end 42 far from the upper end 41, the anchor bar upset 51 is clamped at the bottom of the lower end 42, then the lower end 42 is connected with the sleeve 3 by screw thread, and the lower end 42 is screwed, so that the through-hole screw 4 and the sleeve 3 are fixed.

A cushion block 6 is arranged between the anchoring steel bar upset head 51 and the pile head steel bar upset head 21, the anchoring steel bar upset head 51 and the pile head steel bar upset head 21 are both in contact with the cushion block 6, when the lower end part 42 is screwed, the anchoring steel bar upset head 51 extrudes the cushion block 6, and the lower end part 42 and the sleeve 3 can be screwed more tightly.

One end of the anchor steel bar 5 far away from the pile head steel bar 2 is provided with a bending section 52, the bending section 52 is arranged to strengthen the connection strength of the anchor steel bar 5 and the bearing platform, the using amount of the bearing platform steel bar can be reduced, and the anchor steel bar is suitable for the condition that the concrete poured on the bearing platform is thinner.

The implementation principle of the connecting device for the precast pile in the embodiment of the application is as follows: during construction, the first connecting hole 31 of the sleeve 3 faces downwards, the sleeve 3 is sleeved on the pile head reinforcing steel bar 2, and then the pile head reinforcing steel bar upset head 21 is manufactured, so that the pile head reinforcing steel bar upset head 21 is clamped in the second connecting hole 32 and cannot be separated from the first connecting hole 31.

Then the cushion block 6 is placed into the sleeve 3, then one end of the anchoring steel bar 5 far away from the anchoring steel bar heading 51 is inserted into the lower end part 42 and extends out of the upper end part 41, then the through hole screw 4 is in threaded connection with the sleeve 3, the anchoring steel bar heading 51 is clamped in the second connecting hole 32, after the through hole screw 4 is screwed down, the anchoring steel bar 5 is fixed with the pile head steel bar 2, and finally the anchoring steel bar 5 is connected with the bearing platform.

Example two

Referring to fig. 3, the difference with the first embodiment lies in that a plurality of counter bores 411 are provided on one side of the upper end portion 41 away from the lower end portion 42, the counter bores 411 are uniformly arranged along the circumferential direction of the upper end portion 41, a bolt 7 is provided in each counter bore 411, a plurality of locking holes are uniformly provided on one 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 holes are aligned with the counter bores 411, the bolt 7 penetrates through the counter bores 411 and is in threaded connection with the locking holes, the bolt 7 further strengthens the connection relationship 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.

EXAMPLE III

Referring to fig. 4 and 5, the difference from the first embodiment is that the lower end 42 and the sleeve 3 are fixed by the fixing member 8, and when the piercing screw 4 is installed, the lower end 42 is inserted into the sleeve 3 and then fixed by the fixing member 8. The sleeve 3 is provided with a plurality of fixing members 8 in the circumferential direction.

Fixed subassembly 8 includes fixed block 81 and inserted bar 82, fixed block 81 is fixed on the sleeve 3 outer wall, mounting hole 811 has been seted up on the lateral wall of fixed block 81 and sleeve 3 contact, inserted bar 82 runs through fixed block 81, inserted bar 82 runs through mounting hole 811, the one end that sleeve 3 was kept away from to inserted bar 82 is fixed with connecting block 821, be provided with butt piece 83 in the mounting hole 811, butt piece 83 is fixed with inserted bar 82, be provided with spring 84 in the mounting hole 811, spring 84 cup joints on inserted bar 82, spring 84's one end is fixed with butt piece 83, the pore wall that butt piece 83 was kept away from to spring 84's the other end and mounting hole 811 is fixed.

The fixing assembly 8 further comprises a positioning block 85, the positioning block 85 is fixed on one side, close to the sleeve 3, of the upper end portion 41, the positioning groove 33 is formed in one side, close to the upper end portion 41, of the sleeve 3, and the positioning block 85 is connected with the positioning groove 33 in an inserting mode. The outer wall of the sleeve 3 is provided with a first insertion hole 34, the axis of the first insertion hole 34 is coaxial with the axis of the insertion rod 82, and the first insertion hole 34 is communicated with the positioning groove 33. One side of the positioning block 85 close to the first insertion hole 34 is provided with a second insertion hole 851, and after the positioning block 85 is inserted into the positioning groove 33, the second insertion hole 851 is aligned with the axis of the first insertion hole 34.

Under the action of the elastic force of the spring 84, the abutting block 83 abuts against the outer wall of the sleeve 3, one end of the insertion rod 82 close to the sleeve 3 penetrates through the first insertion hole 34 and is inserted into the second insertion hole 851, the positioning block 85 is fixed with the sleeve 3, and the lower end part 42 is fixed with the sleeve 3.

When the positioning block 85 is inserted into the positioning groove 33, the connecting block 821 is pulled first, the spring 84 is compressed, one end of the insertion rod 82, which is close to the sleeve 3, enters the mounting hole 811, then the positioning block 85 is inserted into the positioning groove 33, then the connecting block 821 is loosened, under the action of the elastic force of the spring 84, the abutting block 83 drives the insertion rod 82 to move towards the direction close to the sleeve 3, the insertion rod 82 penetrates through the first insertion hole 34 and then is inserted into the second insertion hole 851, and therefore the positioning block 85 is fixed.

One end of the insertion rod 82 close to the sleeve 3 is arc-shaped, so that the insertion rod 82 can be conveniently inserted into the second insertion hole 851. If the second insertion hole 851 is not perfectly aligned with the axis of the first insertion hole 34, the insertion rod 82 can be smoothly inserted into the second insertion hole 851 because the end of the insertion rod 82 near the sleeve 3 is rounded.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.