CN218757443U - Precast pile bolt formula mechanical connection structure - Google Patents
Precast pile bolt formula mechanical connection structure Download PDFInfo
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- CN218757443U CN218757443U CN202222794190.1U CN202222794190U CN218757443U CN 218757443 U CN218757443 U CN 218757443U CN 202222794190 U CN202222794190 U CN 202222794190U CN 218757443 U CN218757443 U CN 218757443U
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Abstract
The utility model discloses a precast pile bolt formula mechanical connection structure belongs to precast pile technical field. The device comprises an upper end plate, a lower end plate, an inserting bolt and a locking pin, wherein the upper end plate and the lower end plate are matched with each other; the upper end plate is provided with a plurality of threaded holes, the lower end plate is provided with a plurality of corresponding vertical through holes, the bottom of each vertical through hole is provided with a bolt seat, and the bolt seat is provided with a locking hole along the horizontal radial direction; the upper part of the plug bolt is fixed with a threaded hole of the upper end plate through a threaded part, and the lower part of the plug bolt is provided with an annular groove inserted into the locking hole; one end of the locking pin is provided with a U-shaped opening, and the upper end plate and the lower end plate are fixed together by clamping the annular groove of the plug bolt through the U-shaped opening. Adopt a pair of upper end plate, the lower end plate of new design at precast pile both ends, butt joint is accomplished fast to accessible grafting bolt and locking round pin, does not need the field weld, does not need to wait for the welding seam cooling, can save butt joint time by a wide margin, improves the efficiency of construction.
Description
Technical Field
The utility model relates to a precast pile bolt formula mechanical connection structure belongs to precast pile technical field.
Background
The prior precast pile is widely applied to various civil constructions by virtue of the advantages of low construction cost, strong applicability, reliable pile material quality and the like. The precast pile comprises a concrete square pile, a prestressed concrete tubular pile, a steel pile and other precast tubular piles. During construction, due to the limitation of the length of a single pile, several piles are connected to meet the design requirement.
At present, the pile splicing of precast piles mostly adopts a welding pile splicing mode, and the welding pile splicing mode has the following defects: (1) Due to the fact that the technical levels of welders who pile splicing on a construction site are uneven, each joint cannot be guaranteed to meet the requirements of relevant specifications, and problems of inclusion, undercut, insufficient weld joint height and the like often exist, so that construction quality is difficult to guarantee; (2) The welding time of a single welding seam is long, so that the construction efficiency is influenced; (3) In the welding process, the pile is stagnated in the soil layer, so that the pile sinking pressure is increased in the pile pressing process after pile splicing is finished; (4) In the welding process, the joint temperature is high, the pile pressing can be continued only after the pile is stopped for a certain time according to the standard requirement, if the construction site is used for improving the construction efficiency, the pile is sunk immediately after the welding is finished, so that the welding joint is embrittled due to quenching when meeting underground water, and the welding joint is easy to break in the subsequent pile pressing process, such as uneven stress; (5) In the welding process, a large amount of light pollution and smoke pollution are generated, harmful gas is generated, and certain harm is caused to the body of a worker.
Based on above reason, a precast pile bolt formula mechanical connection structure has been designed, and it adopts bolt formula mechanical structure high efficiency to connect, can avoid the problem that above-mentioned precast pile welding pile meets and leads to, improves the efficiency of construction, guarantees construction quality.
Disclosure of Invention
The utility model aims to solve the technical problem that: the utility model provides a precast pile bolt formula mechanical connection structure, it has solved present precast pile and has adopted the welding mode pile extension, has the butt joint quality discrepancy, the lower problem of efficiency of construction.
The utility model discloses the technical problem that solve takes following technical scheme to realize:
a prefabricated pile bolt type mechanical connection structure comprises an upper end plate and a lower end plate which are matched with each other, and further comprises a plug bolt and a locking pin which are used for fixing the upper end plate and the lower end plate together;
the upper end plate is provided with a plurality of threaded holes, the lower end plate is provided with a plurality of vertical through holes corresponding to the threaded holes, the bottom of each vertical through hole is provided with a bolt seat, the bolt seat is provided with a locking hole along the horizontal radial direction, the vertical through holes are vertical to and communicated with the locking hole, and the outer end of the opening of each locking hole is distributed along the outer side of the circumference of the lower end plate;
the upper part of the inserting bolt is fixed with a threaded hole of the upper end plate through a threaded part, the lower part of the inserting bolt is provided with an annular groove inserted into the locking hole, and the outer diameter of the inserting bolt is the same as the inner diameter of the vertical through hole;
the locking bolt is characterized in that a U-shaped opening is formed in one end of the locking pin, the locking pin is inserted into the locking hole in an interference fit mode, and the upper end plate and the lower end plate are fixed together at the position of an annular groove for clamping the inserting bolt through the U-shaped opening.
Preparing a precast pile: the upper end plate is fixed at the bottom end of the precast pile, the lower end plate is fixed at the top end of the precast pile to manufacture the precast pile with a bolt type mechanical connection structure, the inserting bolts are screwed into the threaded holes of the upper end plate and fixed, the lower end part of each inserting bolt is positioned on the same plane, and in the step, the inserting bolts and the upper end plate can be further welded firmly by adopting a welding mode;
pile splicing mode: the precast pile of top is hung directly over the precast pile of below through lifting device, and the upper end plate of the precast pile bottom of top aligns with the lower end plate at the precast pile top of below, and the annular groove one-to-one that will peg graft the bolt lower part passes perpendicular through-hole and inserts in the locking hole of below, radially inserts corresponding locking hole with all locking round pin interference fit from the level in, blocks the annular groove department of peg graft bolt through the U-shaped opening and fixes upper end plate and lower end plate together.
Preferably, circular arc chamfers are arranged on two sides of an opening of the U-shaped opening of the locking pin.
When the U-shaped opening of the locking pin is inserted into the annular groove of the inserting bolt, the arc chamfer of the U-shaped opening can enable the locking pin to be inserted more conveniently and more smoothly in the initial stage.
Preferably, the upper end plate and the lower end plate are both hollow circular end plates, and the threaded holes and the vertical through holes are respectively and uniformly distributed on the same circumference of the upper end plate and the lower end plate.
The upper end plate and the lower end plate are arranged to be hollow annular end plates which can be matched with the end parts of the hollow concrete precast tubular piles to be used as open type precast tubular piles; cross-shaped and conical pile tips for plugging ports can be screwed or welded at the bottom of the upper end plate of the bottommost precast pile.
Preferably, the inserting bolt is an inner hexagonal countersunk head bolt.
The hexagon socket head hole is located the grafting bolt bottom, and the accessible hexagon socket head hole is with the screw thread portion screw in of grafting bolt upper portion in the threaded hole of end plate, and the design of hexagon socket head hole, the bolt head is not protruding, does not influence follow-up quick joint structure.
The beneficial effects of the utility model are that:
(1) Two ends of the precast pile are provided with a pair of upper end plate and a pair of lower end plate which are newly designed, the two precast piles are quickly butted through the inserting bolts and the locking pins, on-site welding is not needed, waiting for welding seam cooling is not needed, the butting time can be greatly saved, and the construction efficiency is improved;
(2) The cooperation of grafting bolt, locking round pin and bolt seat three, during the grafting bolt one-to-one inserted the bolt seat, can align with upper and lower precast pile accuracy, the rethread radially squeezes into from the level locking round pin, pins the grafting bolt, can be fast and stable about with precast pile joint fixed.
Drawings
FIG. 1 is a schematic view of the explosion structure of the present invention;
FIG. 2 is a schematic view of the assembled structure of the present invention;
FIG. 3 is a schematic view of a construction of a jack bolt;
FIG. 4 is a schematic view of the locking pin;
FIG. 5 is a schematic view of a mating relationship between an insert bolt and a locking pin;
fig. 6 is a schematic sectional view of the present invention;
FIG. 7 is a schematic view of the construction of the plug bolt aligned with the vertical through hole;
FIG. 8 is a schematic structural view of the insertion bolt inserted into the vertical through hole and the plug seat;
fig. 9 is a schematic structural view of a locking pin inserted into a locking hole of a plug seat to clamp an annular groove of a plug bolt;
fig. 10 is a schematic structural view of the utility model discloses be applied to the precast pile butt joint.
In the figure: 1. an upper end plate; 101. a threaded hole; 2. a lower end plate; 201. a vertical through hole; 202. a bolt seat; 203. a locking hole; 3. inserting bolts; 301. a threaded portion; 302. an annular groove; 303. an inner hexagonal counter bore; 4. a locking pin; 401. a U-shaped opening; 402. chamfering with an arc; 5. and (5) precast pile.
Detailed Description
In order to make the technical means, the creation features, the achievement purposes and the functions of the present invention easy to understand and understand, the present invention will be further described with reference to the following embodiments.
Example 1
As shown in fig. 1-6, the prefabricated pile bolt type mechanical connecting structure comprises an upper end plate 1 and a lower end plate 2 which are matched with each other, and further comprises a plug bolt 3 and a locking pin 4 which are used for fixing the upper end plate 1 and the lower end plate 2 together;
the upper end plate 1 is provided with a plurality of threaded holes 101, the lower end plate 2 is provided with a plurality of vertical through holes 201 corresponding to the threaded holes 101, the bottom of each vertical through hole 201 is provided with a bolt seat 202, the bolt seat 202 is provided with a locking hole 203 along the horizontal radial direction, the vertical through holes 201 are vertical to and communicated with the locking hole 203, and the outer ends of the openings of the locking holes 203 are distributed along the outer side of the circumference of the lower end plate 2;
the upper end plate 1 and the lower end plate 2 both adopt hollow circular end plates, and the threaded holes 101 and the vertical through holes 201 are respectively and uniformly distributed on the same circumference of the upper end plate 1 and the lower end plate 2. The upper end plate 1 and the lower end plate 2 are arranged to be hollow circular end plates which can be matched with the end parts of the hollow concrete precast tubular piles to be used as open type precast tubular piles; cross-shaped or conical pile tips for plugging ports can also be screwed or welded at the bottom of the upper end plate 1 of the bottommost precast pile 5.
The upper part of the plug bolt 3 is fixed with the threaded hole 101 of the upper end plate 1 through a threaded part 301, the lower part of the plug bolt 3 is provided with an annular groove 302 inserted into the locking hole 203, and the outer diameter of the plug bolt 3 is the same as the inner diameter of the vertical through hole 201;
4 one end of lock round pin is equipped with U-shaped opening 401, with plug bolt 3 from perpendicular through-hole 201 vertical insert bolt seat 202 in, radially insert lock round pin 4 interference fit level locking hole 203, also adopt interference fit mode joint between lock round pin 4 and the annular groove 302, block plug bolt 3's annular groove 302 department through U-shaped opening 401 interference fit, with upper end plate 1 and lower end plate 2 fixed together.
The implementation process comprises the following steps:
preparing a precast pile 5: the precast pile 5 is formed by installing a tubular steel reinforcement framework into a mould, then pouring concrete into the mould, and demoulding after forming. In the tubular pile prefabricating stage, the inserting bolts 3 are screwed with the upper end plate 1 and then welded firmly, the lower end part of each inserting bolt 3 is positioned on the same plane and then welded to the end part of the tubular steel reinforcement framework, on-site screwing and welding are not needed, the butt joint time is saved, and the construction efficiency is improved. After the upper end plate 1 and the lower end plate 2 are welded and fixed at the upper end and the lower end of the tubular steel reinforcement framework, the precast pile 5 with the bolt type mechanical connection structure is manufactured through concrete pouring and forming.
As shown in fig. 7-10, the pile extension is locked: the precast pile 5 is driven into the ground, when the depth is insufficient, the other precast pile 5 is hoisted through hoisting equipment, so that the precast pile 5 above is just opposite to the precast pile 5 below, the upper end plate 1 at the bottom of the precast pile 5 above is aligned with the lower end plate 2 at the top of the precast pile 5 below and gradually descends, the pile is manually rotated and righted, the annular grooves 302 at the lower parts of the inserting bolts 3 are correspondingly inserted into the locking holes 203 below through the vertical through holes 201 one to one, all the locking pins 4 are inserted into the corresponding locking holes 203 in an interference fit manner from the horizontal radial direction, and the annular grooves 302 blocking the inserting bolts 3 through the U-shaped openings 401 fix the upper end plate 1 and the lower end plate 2 together.
The newly designed pair of upper end plate 1 and lower end plate 2 is adopted at two ends of the precast pile 5, when the two precast piles 5 need to be butted, the butt joint can be quickly completed through the inserting bolts 3 and the locking pins 4, the on-site welding is not needed, the cooling of welding seams is not needed, the butt joint time can be greatly saved, and the construction efficiency is improved;
Example 2
As shown in fig. 4, the other structure is the same as that of embodiment 1, and rounded chamfers 402 are provided on both sides of the opening of the U-shaped opening 401 of the lock pin 4.
When the U-shaped opening 401 of the locking pin 4 is inserted into the annular groove 302 of the plug bolt 3, the arc chamfer 402 of the U-shaped opening 401 can make the locking pin 4 more convenient and smoother to insert in the initial stage.
Example 3
The other structure is the same as that of embodiment 1, and the socket bolt 3 is a hexagon socket countersunk head bolt.
The inner hexagonal counter bore 303 is arranged at the bottom of the plug bolt 3, the threaded portion 301 of the upper portion of the plug bolt 3 is screwed into the threaded hole 101 of the upper end plate 1 through the inner hexagonal counter bore 303, the head of the bolt is not protruded due to the design of the inner hexagonal counter bore 303, and the follow-up quick clamping structure is not affected.
The foregoing illustrates and describes the general principles, features and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the above-described embodiments, and that various changes and modifications may be made without departing from the spirit and scope of the invention, and such changes and modifications are intended to be included within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (4)
1. A prefabricated pile bolt type mechanical connection structure comprises an upper end plate and a lower end plate which are matched with each other, and is characterized by also comprising a bolt and a locking pin for fixing the upper end plate and the lower end plate together;
the upper end plate is provided with a plurality of threaded holes, the lower end plate is provided with a plurality of vertical through holes corresponding to the threaded holes, the bottom of each vertical through hole is provided with a bolt seat, the bolt seat is provided with a locking hole along the horizontal radial direction, the vertical through holes are vertical to and communicated with the locking hole, and the outer end of the opening of each locking hole is distributed along the outer side of the circumference of the lower end plate;
the upper part of the plug bolt is fixed with a threaded hole of the upper end plate through a set threaded part, and the lower part of the plug bolt is provided with an annular groove inserted into the locking hole;
the locking bolt is characterized in that a U-shaped opening is formed in one end of the locking pin, the locking pin is inserted into the locking hole in an interference fit mode, and the upper end plate and the lower end plate are fixed together at the position of an annular groove for clamping the inserting bolt through the U-shaped opening.
2. The mechanical latch connection structure for precast piles according to claim 1, wherein the locking pin has a U-shaped opening with rounded chamfers on both sides of the opening.
3. The latch-type mechanical connection structure of precast piles according to claim 1, wherein the upper end plate and the lower end plate are hollow circular end plates, and the threaded holes and the vertical through holes are uniformly distributed on the same circumference of the upper end plate and the lower end plate respectively.
4. The mechanical plug connecting structure for precast piles according to claim 1, wherein the plug bolts are hexagon socket countersunk head bolts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222794190.1U CN218757443U (en) | 2022-10-21 | 2022-10-21 | Precast pile bolt formula mechanical connection structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222794190.1U CN218757443U (en) | 2022-10-21 | 2022-10-21 | Precast pile bolt formula mechanical connection structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218757443U true CN218757443U (en) | 2023-03-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222794190.1U Active CN218757443U (en) | 2022-10-21 | 2022-10-21 | Precast pile bolt formula mechanical connection structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218757443U (en) |
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2022
- 2022-10-21 CN CN202222794190.1U patent/CN218757443U/en active Active
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