CN111101505A - Quick butt joint subassembly and quick butt joint mechanism - Google Patents

Abstract

The invention provides a quick butt joint assembly and a quick butt joint mechanism, wherein a quick butt joint assembly plug platform and a base are provided, the plug platform comprises a first fixing part, a plug part and an extending part positioned between the first fixing part and the plug part, the plug part is convexly arranged on the extending part, and a step surface is formed between the plug part and the extending part; the base comprises a second fixing part and a plurality of fins connected to the second fixing part, and the fins are arranged in a surrounding manner; the inserting table can penetrate through the openings formed by enclosing of the plurality of fins through elastic expansion of the fins, the fins can elastically contract and enclose the extending parts, and the end surfaces of the fins and the step surfaces of the inserting table are oppositely arranged; the thickness of the fin in the radial direction of the base is smaller than the thickness of the second fixing portion in the radial direction of the base. The quick butt joint assembly provided by the invention can ensure the elasticity and the rigidity at the same time.

Description

Quick butt joint subassembly and quick butt joint mechanism

Technical Field

The invention relates to the technical field of buildings, in particular to a quick butt joint assembly and a quick butt joint mechanism.

Background

In the technical field of buildings, in order to facilitate production and processing and reduce construction time, the length of a precast pile is ensured by adopting a mode of splicing reinforced concrete precast piles. In order to quickly and firmly join two prefabricated reinforced concrete piles, a quick butt joint assembly is generally used for connecting reinforcing steel bars inside the two prefabricated reinforced concrete piles. However, the existing quick docking assembly cannot ensure the elasticity during docking and the rigidity after docking at the same time, and therefore, an improved quick docking assembly and a quick docking mechanism are needed.

Disclosure of Invention

Accordingly, there is a need for an improved quick docking assembly and a quick docking mechanism.

The invention provides a quick butt joint assembly which comprises a plug-in table and a base, wherein the plug-in table comprises a first fixing part, a plug-in part and an extending part positioned between the first fixing part and the plug-in part, the plug-in part is convexly arranged on the extending part, and a step surface is formed between the plug-in part and the extending part; the base comprises a second fixing part and a plurality of fins connected to the second fixing part, and the fins are arranged in a surrounding manner; the inserting table can penetrate through openings formed by enclosing of the fins through elastic expansion of the fins, the fins can elastically contract and enclose the extending parts, and the end faces of the fins and the step faces of the inserting table are oppositely arranged; the thickness of the fin along the radial direction of the base is smaller than the thickness of the second fixing portion along the radial direction of the base.

In the quick butt joint assembly provided by the invention, the second fixing part and the fins on the base have different material thicknesses, so that different mechanical properties are obtained in different load bearing areas of the base. Specifically, the inserting table passes through the opening surrounded by the fins, the fins shrink and enclose the extending part of the inserting table after passing through the opening, and the fins need to generate large-amplitude deformation and have elastic shrinkage capacity in the process, so that the fins need to be arranged with small thickness to obtain large elasticity, and the fins are guaranteed not to generate plastic deformation or fracture failure when bearing large axial extrusion force; and the second fixed part is used for being connected with pre-buried component, and its axial that bears, radial load are all great, set its material thickness to be greater than fin thickness and can guarantee the rigidity between second fixed part and the pre-buried component. Moreover, the rapid butt joint assembly provided by the invention is simple to install, after the inserting part of the inserting table is inserted into the base, the fins can elastically contract and enclose the extending part of the base, the end parts of the fins abut against the step surface of the inserting table, and the abutting surfaces between the end parts of the fins and the step surface of the inserting table are approximate to a ring shape, so that the abutting area is large, the joint strength between the first embedded element and the second embedded element can be ensured, and particularly the tensile property is greatly improved; the fin not only can enclose the extension of inserting the platform, can also play spacing effect to the extension, prevents that the extension from rocking in radial direction. In addition, the rapid butt joint assembly provided by the invention is simple in processing technology, low in cost and wide in application scene.

In one embodiment of the present invention, the thickness of the fin near the second fixing portion is smaller than the thickness of the fin far from the second fixing portion.

So set up for the elasticity of fin obtains promoting, and the region that the fin is close to the second fixed part possesses bigger elastic contraction ability, can produce bigger elastic deformation in order to enlarge the open-ended area that the fin encloses in short time, so that insert the platform and pass through the opening fast. In addition, the area of the end face of the fin is larger, so that the contact area of the fin and the step surface of the insertion platform is larger, and the fin can be stably abutted against the step surface after assembly.

In one embodiment of the present invention, the thickness of the fin gradually increases from the end close to the second fixing portion to the end away from the second fixing portion.

So set up, the elasticity of fin is further optimized. From one end close to the second fixing part to one end far away from the second fixing part, the elasticity of the fin is continuously changed in the direction, the change trend is more linear, and no large jump or step change exists, so that the comprehensive mechanical property of the base can be further improved, and the phenomenon that the fin is concentrated in stress and even broken in the elastic sudden change part of the fin is prevented.

In one embodiment of the present invention, the fin has an arc-shaped cross section in the axial direction of the base.

So set up, compare and dissect the back for rectilinear fin along the axial, dissect the back for curved fin along the axial and have following advantage: after the insertion platform passes through the opening surrounded by the fins, the fins can provide larger resilience stress, the extending part is quickly contracted and folded, the shape of the opening surrounded by the fins is kept consistent before and after the insertion platform passes through the opening to a greater extent, the change of the shape or the size of the opening surrounded by the fins after the insertion platform passes through the opening is avoided, the change of the opening surrounded by the fins can cause the change of the contact area and the contact reliability of the end surface of the fins and the step surface of the insertion platform, and therefore the arc-shaped fins can ensure that the end surface of the fins can reliably and stably abut against the stage of the insertion platform.

In one embodiment of the present invention, the fin is in surface contact with the step surface of the insert table.

So set up, the area of contact between fin and the platform step face of inserting is bigger, can avoid or reduce fin terminal wearing and tearing and deformation to make fin terminal portion support and lean on the plug step face steadily reliably for a long time.

In one embodiment of the present invention, the fin has a thickness of 0.5mm to 3.5mm at an end thereof adjacent to the second fixing portion.

So set up, can guarantee that the fin is close to the one end of second fixed part and has sufficient elastic shrinkage ability, produce at the plug through the fin and enclose the opening in-process and increase substantially elastic deformation and do not take place to destroy or plastic deformation.

In one embodiment of the invention, the fin has a thickness of 1mm to 5mm at an end thereof remote from the second fixing portion.

So set up, can guarantee that the fin keeps away from the terminal surface of second fixed part and have great area to with form the contact surface of abundant laminating between the platform step face of inserting.

In one embodiment of the present invention, the thickness of the second fixing portion is 2mm to 6 mm.

So set up, can guarantee that the second fixed part has sufficient intensity, realize its and the pre-buried component between reliable be connected, improve its highest upper limit that bears outside axial and/or radial load.

A quick butt joint mechanism comprises a first embedded element, a second embedded element and the quick butt joint assembly; the fixing part of the inserting table is connected to the first embedded element, the base is connected to the second embedded element, and one end of a steel bar is connected to the first embedded element or the second embedded element; the reinforcing steel bars connected with the first embedded elements are connected with the reinforcing steel bars connected with the second embedded elements through the quick butt joint assembly.

The quick butt joint mechanism can quickly connect the first embedded element and the second embedded element, construction time is saved, the firmness of the connected first embedded element and the second embedded element is high, and particularly the tensile property is good.

In one embodiment of the invention, the ends of the first embedded element or the second embedded element, which are connected with the reinforcing steel bars, are provided with shrinkage openings, the ends of the reinforcing steel bars, which are connected with the first embedded element or the second embedded element, are provided with upsets, and the shrinkage openings are used for limiting the upsets of the reinforcing steel bars.

So set up, it is simple and convenient to be connected between first embedded component or the second embedded component and the reinforcing bar, and the engineering time is short, and the fastness to connection is high.

In an embodiment of the present invention, the first embedded element or the second embedded element is in threaded connection with the steel bar.

So set up, be provided with the adhesive force that the screw thread can increase between reinforcing bar and the concrete on the reinforcing bar for combine closely between reinforcing bar and the concrete, the two can coordinate the cooperation, bear external force jointly, increase the stress strength of precast pile.

Drawings

FIG. 1 is a schematic structural view of a quick docking assembly according to an embodiment of the present invention;

FIG. 2 is a schematic structural view of the docking station shown in FIG. 1;

FIG. 3 is a cross-sectional view of the base shown in FIG. 1;

FIG. 4 is a schematic view of a portion of the base shown in FIG. 1;

FIG. 5 is a cross-sectional view of a quick docking mechanism in one embodiment of the present invention;

fig. 6 is a cross-sectional view of a first pile, a reinforcement bar, a first embedded element, and an insert table according to an embodiment of the present invention;

fig. 7 is a cross-sectional view of a second pile, a reinforcement bar, a second embedded element, and a base according to an embodiment of the present invention;

FIG. 8 is a schematic view of the quick docking mechanism shown in FIG. 5 in use;

fig. 9 is a cross-sectional view of a precast pile in one embodiment of the present invention.

100. A quick docking assembly; 10. inserting a platform; 20. a base; 11. a first fixed part; 12. a plug-in part; 13. an extension portion; 14. a step surface; 15. an abutting portion; 21. a second fixed part; 22. a fin; 221. an end face; 200. a quick docking mechanism; 210. a first pre-buried element; 211. an annular projection; 220. a second pre-embedded element; 300. prefabricating a pile; 301. a first pile body; 302. a second pile body; 310. reinforcing steel bars; 311. heading; 320. concrete; 330. and (6) sleeving the pile.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention. As used herein, the term "or/and" includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1 to 4, fig. 1 is a schematic structural diagram of a quick docking assembly 100 according to an embodiment of the present invention; FIG. 2 is a schematic structural diagram of the docking station 10 shown in FIG. 1; FIG. 3 is a cross-sectional view of the base 20 shown in FIG. 1; fig. 4 is a partial structural view of the base 20 shown in fig. 1.

The present invention provides a quick dock assembly 100 for connecting two engineering parts. In this embodiment, the quick docking assembly 100 is used to connect the reinforcing bars 310 in the precast pile 300. It is understood that in other embodiments, the quick docking assembly 100 may also be used in other engineering fields, such as fabricated buildings, etc., and may also be used to connect reinforcing bars in other applications, such as pouring concrete, etc.

The invention provides a quick docking assembly 100, which comprises a docking station 10 and a base 20, wherein the docking station 10 comprises a first fixing part 11, a docking part 12 and an extending part 13 positioned between the first fixing part 11 and the docking part 12, the docking part 12 is convexly arranged on the extending part 13, and a step surface 14 is formed between the docking part 12 and the extending part 13; the base 20 includes a second fixing portion 21 and a plurality of fins 22 connected to the second fixing portion 21, and the plurality of fins 22 are disposed to surround each other; the insert table 10 can pass through the openings defined by the plurality of fins 22 by elastic expansion of the fins 22, the fins 22 can elastically contract and close the extension 13, and the end surfaces 221 of the fins 22 and the step surface 14 of the insert table 10 are disposed to face each other.

The socket 10 is a cylindrical component, the first fixing portion 11 is used for fixing with an external component, and the inserting portion 12 is used for inserting into the buckle. To facilitate plugging, the platform 10 is preferably generally cylindrical; in other embodiments, the platform 10 may have other shapes such as a square column and a tapered column. In order to increase the bearing capacity of the quick docking assembly 100, the platform 10 is made of a solid material. It is understood that in other embodiments, the platform 10 may be made of hollow material according to different bearing requirements.

The first fixing portion 11 is used for connecting with the first embedded element 210. In this embodiment, the outer peripheral wall of the first fixing portion 11 is provided with an external thread, and the inner peripheral wall of the first embedded element 210 is provided with an internal thread, which are fixedly connected by a thread. It is understood that in other embodiments, the first fixing portion 11 and the first embedded element 210 may be connected by other methods, such as welding, clamping, riveting, and the like.

The insertion part 12 can penetrate and abut against the end surface 221 of the base 20, the insertion part 12 can enable the base 20 to be elastically expanded when penetrating through the base 20, and after the insertion part 12 penetrates through the base 20, the base 20 elastically contracts and encloses the extension part 13, so that the insertion table 10 can be limited from moving radially.

The extending portion 13 is used for connecting the first fixing portion 11 and the inserting portion 12, and after the inserting portion 12 is inserted into the base 20, the extending portion 13 is enclosed and fixed by the base 20.

The base 20 is substantially hollow and cylindrical, and is fitted to the cradle 10. Preferably, the base 20 is substantially hollow cylindrical. It is understood that in other embodiments, the base 20 may be configured with the socket 10 in other shapes such as a square cylinder, a cone cylinder, etc.

The second fixing portion 21 is used for being connected with the second embedded element 220, in this embodiment, an outer circumferential wall of the second fixing portion 21 is provided with an external thread, an inner circumferential wall of the second embedded element 220 is provided with an internal thread, and the two are fixedly connected through the thread. It is understood that in other embodiments, the second fixing portion 21 and the second embedded element 220 may be connected by other methods such as welding, clamping, riveting, and the like.

The plurality of fins 22 are enclosed and form a hollow column shape, and a certain gap is formed between every two adjacent fins 22 for elastic expansion and elastic contraction of the fins 22; the fins 22 can be penetrated by the inserting part 12 through elastic expansion, and after the inserting part 12 penetrates through the fins 22, the fins 22 elastically contract and enclose the extension part 13 of the inserting table 10. Preferably, the plurality of fins 22 are circumferentially and uniformly arranged around the axis of the base 20 in order to balance the force applied to the plurality of fins 22.

In one embodiment, the external thread on the outer peripheral wall of the second fixing portion 21 extends to the outer peripheral wall of the fin 22, so that the outer peripheral wall of the fin 22 also has an external thread capable of being screwed with the second embedded element 220.

With such an arrangement, the fin 22 itself is also connected to the second fixing portion 21, so that the fin 22 is more stable when elastically contracted or elastically expanded, and the fin 22 is less likely to shake.

In the present embodiment, the socket 10 and the base 20 are made of ferrous metal. Preferably, the socket 10 and the base 20 are made of carbon steel or alloy steel. Specifically, the platform 10 and the base 20 are made of carbon steel, chromium vanadium steel, chromium nickel steel, chromium molybdenum steel, chromium nickel molybdenum steel, chromium manganese silicon steel, ultra-high strength steel, or stainless steel. It is understood that other materials may be used in other embodiments.

The rapid docking assembly 100 is used by extending the insertion part 12 and the extension part 13 of the docking station 10 into the inner wall of the base 20 and moving along the insertion direction α, the insertion part 12 of the docking station 10 applying pressure to the fin 22 to elastically expand the fin 22 until the insertion part 12 passes through the fin 22, the fin 22 elastically contracts and encloses the extension part 13 at the moment when the insertion part 12 passes through the fin 22, and when a force in the direction α opposite to the insertion direction α is applied to the docking station 10, the end of the fin 22 abuts against the step surface 14 between the insertion part 12 and the extension part 13 to limit the docking station 10.

It should be noted that the insertion direction α is the direction in which the fixing portion points toward the mating part 12, i.e. the direction of the arrow shown in the figure, it is understood that the insertion direction α can be, but is not limited to, the above-mentioned directions, and even a partial angular offset is also included in the scope of the present invention.

The rapid butt joint component 100 provided by the invention is simple to install, after the inserting part 12 of the inserting table 10 is inserted into the base 20, the fin 22 can elastically contract and enclose the extending part 13 of the base 20, the end part of the fin 22 abuts against the step surface 14 of the inserting table 10, and the abutting surface between the end part of the fin 22 and the step surface 14 of the inserting table 10 is similar to a ring shape, so that the abutting area is large, the joint strength between the first embedded element 210 and the second embedded element 220 can be ensured, and particularly, the tensile property is greatly improved; the fins 22 not only can enclose the extension 13 of the insertion stage 10, but also can limit the extension 13 to prevent the extension 13 from shaking in the radial direction. In addition, the rapid docking assembly 100 provided by the invention is simple in processing technology, low in cost and wide in application scene.

In one embodiment of the present invention, the thickness of the fin 22 in the radial direction of the base 20 is smaller than the thickness of the second fixing portion 21 in the radial direction of the base 20. I.e. in fig. 4, the thickness at c is smaller than the thickness at a.

In the quick docking assembly 100 of the present invention, the second fixing portion 21 and the fin 22 on the base 20 have different material thicknesses, so that the base 20 has different mechanical properties in different load bearing areas. Specifically, the inserting table 10 passes through the opening surrounded by the fin 22, the fin 22 shrinks and encloses the extending portion 13 of the inserting table 10 after passing through the opening, and in the process, the fin 22 needs to generate large-amplitude deformation and has the capability of elastic shrinkage, so that the fin 22 needs to be provided with small thickness to obtain large elasticity, and the fin is ensured not to generate plastic deformation or fracture failure when bearing large axial extrusion force; the second fixing portion 21 is used for being connected with the embedded element, axial loads and radial loads borne by the second fixing portion are large, and the material thickness of the second fixing portion is set to be larger than that of the fins 22, so that rigidity between the second fixing portion 21 and the embedded element can be guaranteed.

In one embodiment of the present invention, the thickness of the fin 22 at the end close to the second fixing portion 21 is smaller than the thickness at the end far from the second fixing portion 21. I.e. in fig. 4, the thickness at b is smaller than the thickness at c.

With the arrangement, the elasticity of the fins 22 is improved, the area of the fins 22 close to the second fixing portion 21 has larger elastic contraction capacity, and larger elastic deformation can be generated to enlarge the area of the opening surrounded by the fins 22 in a shorter time, so that the inserting table 10 can quickly pass through the opening. In addition, the area of the end surface 221 of the fin 22 is larger, so that the contact area of the fin 22 and the step surface 14 of the insert table 10 is larger, and the fin 22 can be stably abutted on the step surface 14 after assembly.

In one embodiment of the present invention, the thickness of the fin 22 gradually increases from the end close to the second fixing portion 21 to the end far from the second fixing portion 21. That is, in fig. 4, the thickness from b to a gradually increases.

So configured, the flexibility of the fins 22 is further optimized. From the end close to the second fixing portion 21 to the end far from the second fixing portion 21, the elasticity of the fin 22 is continuously changed in the direction, the change trend is more linear, and no large jump or step change occurs, so that the comprehensive mechanical property of the base 20 can be further improved, and the phenomenon that the fin 22 is concentrated in stress and even broken at the elastic sudden change part of the fin can be prevented.

In one embodiment of the present invention, the fin 22 has an arc-shaped cross section in the axial direction of the base 20. That is, in fig. 4, the cross section from b to c is arc-shaped.

So set up, compare and dissect the back for rectilinear fin 22 along the axial, dissect the back for curved fin 22 along the axial and have following advantage: after the inserting table 10 passes through the opening surrounded by the fins 22, the fins 22 can provide larger rebound stress, the extending part 13 is quickly contracted and folded, the shape of the opening surrounded by the fins 22 is kept consistent before and after the inserting table 10 passes through the opening, the change of the shape or the size of the opening surrounded by the fins 22 after the inserting table 10 passes through the fin 22 is avoided, the change of the opening surrounded by the fins 22 can cause the change of the contact area and the contact reliability of the end surface 221 of the fin 22 and the step surface 14 of the inserting table 10, and therefore the arc-shaped fins 22 can ensure that the end surface 221 of the fin 22 can be reliably and stably abutted against the stage of the inserting table.

In one embodiment of the present invention, the end surface 221 of the fin 22 is in surface contact with the step surface 14 of the insert table 10.

With this arrangement, the contact area between the fin 22 and the step surface 14 of the socket 10 is larger, and abrasion and deformation of the tip of the fin 22 can be avoided or reduced, so that the tip of the fin 22 can stably and reliably abut against the plug step surface 14 for a long time.

In one embodiment of the present invention, the fin 22 has a thickness of 0.5mm to 3.5mm at an end thereof adjacent to the second fixing portion 21.

Preferably, the fin 22 has a thickness of 2.5mm at an end thereof adjacent to the second fixing portion 21.

So set up, can guarantee that fin 22 is close to the one end of second fixed part 21 and has sufficient elastic shrinkage ability, produces large amplitude elastic deformation and does not take place to destroy or plastic deformation in the opening process that the plug encloses through fin 22.

In one embodiment of the present invention, the fin 22 has a thickness of 1mm to 5mm at an end thereof distant from the second fixing portion 21.

Preferably, the fin 22 has a thickness of 2mm to 3mm at an end thereof distant from the second fixing portion 21.

With this arrangement, the end surface 221 of the fin 22 away from the second fixing portion 21 can be ensured to have a large area, and a contact surface that sufficiently adheres to the step surface 14 of the socket 10 can be formed.

In one embodiment of the present invention, the thickness of the second fixing portion 21 is 2mm to 6 mm.

Preferably, the outer peripheral wall of the second fixing portion 21 is externally threaded, and the thickness of the second fixing portion 21 before threading is 3mm to 4 mm.

So set up, can guarantee that second fixed part 21 has sufficient intensity, realize its and the pre-buried component between reliable be connected, improve its highest upper limit that bears outside axial and/or radial load.

Referring to fig. 5 to 9, fig. 5 is a cross-sectional view of a quick docking mechanism 200 according to an embodiment of the present invention; fig. 6 is a cross-sectional view of the first pile 301, the reinforcement bar 310, the first embedded element 210 and the platform 10 according to an embodiment of the present invention; fig. 7 is a cross-sectional view of the second pile 302, the reinforcement bar 310, the second fastener element 220 and the base 20 according to an embodiment of the present invention; fig. 8 is a schematic view of the quick docking mechanism 200 shown in fig. 5 in a use state.

A fast docking mechanism 200 comprises a first pre-embedded element 210, a second pre-embedded element 220 and the fast docking assembly 100; the fixing part of the inserting table 10 is connected to the first pre-buried element 210, the base 20 is connected to the second pre-buried element 220, and one end of the steel bar 310 is connected to the first pre-buried element 210 or the second pre-buried element 220; the reinforcing steel bars 310 connected with the first embedded elements 210 and the reinforcing steel bars 310 connected with the second embedded elements 220 are connected through the quick butt joint assembly 100.

The quick butt joint mechanism 200 can quickly connect the first embedded element 210 and the second embedded element 220, so that the construction time is saved, and the connected first embedded element 210 and the connected second embedded element 220 are high in firmness and particularly good in tensile property.

In one embodiment of the present invention, the outer wall of the first embedded element 210 relatively close to one end of the steel bar 310 is a non-circular polygon; and/or the presence of a catalyst in the reaction mixture,

the outer wall of the second embedded element 220 close to one end of the steel bar 310 is a non-circular polygon.

Thus, the first embedded element 210 and the second embedded element 220 are convenient to install and fix.

In one embodiment of the present invention, the ends of the first fastener insert 210 or the second fastener insert 220 connected to the reinforcing bars 310 each have a constriction, and the ends of the reinforcing bars 310 connected to the first fastener insert 210 or the second fastener insert 220 have an upset 311, and the constrictions are used for limiting the upset 311 of the reinforcing bars 310.

So set up, it is simple and convenient to be connected between first pre-buried component 210 or second pre-buried component 220 and the reinforcing bar 310, and the engineering time is short, and the fastness of connection is high.

In one embodiment of the present invention, the first fastener insert 210 or the second fastener insert 220 is threadedly coupled to the reinforcing bar 310.

So set up, be provided with the screw thread on the reinforcing bar 310 and can increase the adhesive force between reinforcing bar 310 and the concrete 320 for combine closely between reinforcing bar 310 and the concrete 320, the two can coordinate the cooperation, bear external force jointly, increase precast pile 300's stress strength.

It is understood that other connection forms, such as welding, riveting, gluing, etc., may also be used between the first embedded element 210 and the platform 10 and between the second embedded element 220 and the base 20.

The use process of the quick docking mechanism 200 is as follows: the first embedded element 210 is installed at the end of the steel bar 310 in the first pile body 301 through a shrink-fit or threaded connection in a factory or a construction site, and the second embedded element 220 is installed at the end of the steel bar 310 in the second pile body 302 through a shrink-fit or threaded connection. Installing the inserting table 10 on the first embedded element 210 and the base 20 on the second embedded element 220 in a construction site; burying the second pile 302 underground, keeping the second pre-buried element 220 above the horizontal plane (generally, the height of the part of the second pile 302 above the horizontal plane is about 1 m), coating a glue coating (not shown) on the surface of the second pile 302, and making the glue coating flow into the inner cavity of the second pre-buried element 220; the first pile body 301 is spliced with the second pile body 302 through a crane or other modes, during splicing, the axes of the first embedded element 210 and the second embedded element 220 are approximately aligned, pressure is applied to the first embedded element 210, so that the inserting platform 10 is inserted into the base 20 (the butt joint process of the quick butt joint assembly 100 can be completed only by the weight of the first precast pile per se on part of construction sites, external force does not need to be applied), and when the inserting part 12 of the inserting platform 10 penetrates through the base 20, sound is generated, and the installation completion can be judged. Most of the glue coating layers are extruded between the first embedded element 210 and the second embedded element 220, between the base 20 and the second embedded element 220, between the inserting table 10 and the second embedded element 220, and between the inserting table 10 and the base 20 in the installation process, and a small part of the glue coating layers are extruded between the inserting table 10 and the first embedded element 210. It will be appreciated that, because there are typically multiple rebars 310 in the precast pile 300, it is necessary to simultaneously dock the quick docking mechanisms 200 on multiple rebars 310.

In one embodiment, the inserting table 10 is connected with the first embedded element 210 by a thread; and/or, the base 20 is connected with the second embedded element 220 by a screw thread.

It is understood that in other embodiments, other connection methods, such as snap connection, welding, riveting, etc., may be adopted between the socket 10 and the first fastener element 210, and between the base 20 and the second fastener element 220.

In one embodiment, for convenience of processing, the first embedded element 210 or the second embedded element 220 may be directly provided with through threads, one end of which is used for connecting the reinforcing bars 310, and the other end of which is used for connecting the quick docking assembly 100.

In one embodiment, an annular protrusion 211 is disposed at one end of the first embedded element 210 and/or the second embedded element 220 connected to the quick connection assembly.

So set up, annular lug 211 can homogenize prestressing force for the prestressing force that the steel reinforcement cage can bear when prestretching is carried out is bigger, prevents that first embedded component 210 or second embedded component 220 from damaging.

In one embodiment, the outer diameter of the annular protrusion 211 gradually decreases from the end of the first fastener element 210 and/or the second fastener element 220 to the middle.

With such an arrangement, the annular bump 211 can further homogenize the prestress, and the phenomenon of abrupt change of the angle of the outer wall surface (such as two mutually perpendicular surfaces) does not exist, so that the prestress loss can be prevented.

It is understood that in other embodiments, the annular protrusion 211 with other shapes, such as rectangular or trapezoidal annular protrusion 211 with a cross section in the axial direction, may be used.

Preferably, the outer peripheral wall of the annular protrusion 211 is a curved surface. It is understood that in other embodiments, the outer peripheral wall of the annular protrusion 211 may have other shapes such as a slope.

So set up, can further reduce the loss of stress, and have excellent homogeneous prestress effect.

It should be noted that the first embedded element 210 and the second embedded element 220 may be of the same type or different types, and may be selected according to a working condition.

Referring to fig. 9, fig. 9 is a cross-sectional view of a precast pile 300 according to an embodiment of the present invention.

The precast pile 300 is manufactured by arranging the steel bars 310 according to the stress requirement after forming to form a steel bar cage, pre-stretching the steel bar cage to generate prestress to offset or reduce the tensile stress generated by external load, so that no crack is generated or the time for generating the crack is prolonged under the condition of normal use of the steel bars 310; the reinforcement cage is placed into a mold after being formed, then concrete 320 is poured into the mold, a centrifugal mode is started if a hollow precast pile 300 needs to be made, the precast pile is placed in the mold in a standing mode if an entity pile needs to be made, and the precast pile 300 is formed after drying and demolding after being formed. The pile manufacturing method is simple, and the manufactured precast pile 300 is high in strength, flexible in construction site and low in cost.

The precast pile 300 is connected by opposing the reinforcing bars 310 connected to the first pre-embedded elements 210 to the reinforcing bars 310 connected to the second pre-embedded elements 220 and using the quick coupling assembly 100 when connecting two precast piles 300.

Preferably, the steel bar 310 is a steel bar for prestressed concrete 320. The PC steel bar has the advantages of high strength and toughness, low looseness, strong bond force with the concrete 320, good weldability and upsetting property, material saving and the like.

It is understood that in other embodiments, other types of rebar 310 are possible, such as stainless steel rods, hot rolled steel rods, medium strength pre-stressed wires, stress-relief wires, steel strands, pre-stressed threaded rebar, and the like.

In one embodiment of the present invention, the reinforcing bars 310, the first embedded element 210 and the second embedded element 220 are embedded in the concrete 320 in advance to form embedded elements.

It is understood that in other embodiments, the reinforcing bars 310, the first fastener element 210 and the second fastener element 220 can be driven into the concrete 320 to become fastener elements, and the reinforcing bars 310 are driven into the concrete 320 first, and then the first fastener element 210 or the second fastener element 220 is connected to the end of the reinforcing bars 310.

In one embodiment of the present invention, the precast pile 300 is a hollow tubular pile.

It is understood that in other embodiments, the precast pile 300 may also be a hollow square pile, a solid tubular pile, a solid square pile, a solid pointed pile or other special-shaped piles.

In one embodiment, the reinforcement cage is subjected to a tensioning step and a relaxation step. The tensioning step is to apply prestress to the reinforcement cage in advance so that the reinforcement cage bears compressive stress and further generates certain deformation to improve the load which can be borne by the reinforcement cage, wherein the load comprises the self weight of a component, wind load, snow load, earthquake load action and the like; because the prestress applied in the tensioning step is larger, in order to reduce the prestress loss of the reinforcement cage, the tensioning step is required.

In one embodiment, after the first pile body 301 and the second pile body 302 are butted, a pile hoop 330 is arranged on the peripheral wall of the precast pile 300 after the butting is completed, and the pile hoop 330 is used for fastening the butted part of the first pile body 301 and the second pile body 302 to prevent the first pile body 301 and the second pile body 302 from being misplaced in service.

The quick butt joint mechanism 200 provided by the invention has the advantages that only one end of the steel bar 310 is connected with the first embedded element 210 or the second embedded element 220, the two steel bars 310 can be connected through the quick butt joint component 100, the connection is simple and convenient, the joint strength is high, and particularly, the tensile property is excellent.

In the description of the present invention, it is to be understood that the orientation or positional relationship indicated by the orientation words such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal" and "top, bottom", etc. are usually based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and in the case of not making a reverse description, these orientation words do not indicate and imply that the device or element being referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore, should not be considered as limiting the scope of the present invention; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.

It should be understood by those skilled in the art that the above embodiments are only for illustrating the present invention and are not to be used as a limitation of the present invention, and that suitable changes and modifications of the above embodiments are within the scope of the claimed invention as long as they are within the spirit and scope of the present invention.

Claims (10)

1. A quick butt joint assembly (100) is characterized by comprising a plug-in platform (10) and a base (20), wherein the plug-in platform (10) comprises a first fixing part (11), a plug-in part (12) and an extending part (13) positioned between the first fixing part (11) and the plug-in part (12), the plug-in part (12) is convexly arranged on the extending part (13), and a step surface (14) is formed between the plug-in part (12) and the extending part (13); the base (20) comprises a second fixing part (21) and a plurality of fins (22) connected to the second fixing part (21), and the plurality of fins (22) are arranged in a surrounding mode; the inserting table (10) can penetrate through openings formed by enclosing a plurality of fins (22) through elastic expansion of the fins (22), the fins (22) can elastically contract and enclose the extending parts (13), and the end surfaces (221) of the fins (22) and the step surfaces (14) of the inserting table (10) are oppositely arranged;

the thickness of the fin (22) in the radial direction of the base (20) is smaller than the thickness of the second fixing portion (21) in the radial direction of the base (20).

2. The quick docking assembly (100) of claim 1, wherein the fin (22) has a thickness at an end proximate to the second fixture (21) that is less than a thickness at an end distal from the second fixture (21).

3. The quick docking assembly (100) of claim 2, wherein the thickness of the fin (22) is gradually greater from the end near the second fixing portion (21) to the end far from the second fixing portion (21).

4. The quick docking assembly (100) of claim 3, wherein the fin (22) is arcuate in cross-section in the axial direction of the base (20).

5. The quick docking assembly (100) of claim 1, wherein the fin (22) is in surface contact with the stepped surface (14) of the docking station (10).

6. The quick docking assembly (100) of claim 1, wherein the fin (22) has a thickness of 0.5mm to 3.5mm near one end of the second fixing portion (21).

7. The quick docking assembly (100) of claim 1, wherein the fin (22) has a thickness of 1mm to 5mm at an end remote from the second fixing portion (21).

8. The quick docking assembly (100) of claim 1, wherein the thickness of the second fixing portion (21) is 2mm to 6 mm.

9. A quick docking mechanism (200) comprising a first pre-embedded element (210), a second pre-embedded element (220) and a quick docking assembly (100) according to any one of claims 1 to 8; the first fixing part (11) of the inserting table (10) is connected to the first embedded element (210), and the second fixing part (21) of the base (20) is connected to the second embedded element (220); the first embedded element (210) and the second embedded element (220) are connected through the quick butt joint assembly (100).

10. The quick docking mechanism (200) as claimed in claim 9, wherein the first embedded element (210) and the second embedded element (220) each have a contraction port for connecting with a steel bar (310), and the end of the steel bar (310) connected with the first embedded element (210) or the second embedded element (220) has an upset (311), and the contraction port is used for limiting the upset (311) of the steel bar (310); alternatively, the first and second electrodes may be,

the first embedded element (210) and the second embedded element (220) are provided with internal threads and are used for being in threaded connection with a steel bar (310).

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