CN100451244C

CN100451244C - Upper-screw-lower-top expansion meshing body pile-connecting fastener and prefab

Info

Publication number: CN100451244C
Application number: CNB2005100698739A
Authority: CN
Inventors: 周兆弟
Original assignee: Individual
Current assignee: Individual
Priority date: 2005-05-17
Filing date: 2005-05-17
Publication date: 2009-01-14
Anticipated expiration: 2025-05-17
Also published as: CN1676764A

Abstract

The present invention relates to a pipe pile connection buckle, a prefabricated component composed of prefabricated component joints, a connection structure between the prefabricated components and a method for manufacturing the prefabricated component, which belongs to the field of the manufacture of prefabricated component connection buckles and the prefabricated components. An upper-spiral lower-supporting expanding engaging body pile splicing buckle is composed of tensioning screw nuts, expanding engaging screw supporting and tensioning screw nuts and expanding pins, wherein the tensioning screw nuts are screwed in screw sections of expanding engaging screws; during butt joint, under the action of the expanding pins, expanding tooth sections of the expanding engaging screws expand and are engaged in expanding engaging cavities of the expanding engaging screw supporting and tensioning screw nuts. The prefabricated component is composed of the upper-spiral lower-supporting expanding engaging body pile splicing buckles; both ends of the prefabricated component are respectively inlaid with the tensioning screw nuts and the supporting and tensioning screw nuts; set heads arranged at both ends of each of a plurality of longitudinal reinforced bars arranged in a reinforced bar cage are respectively clamped on reinforced bar set head clamping platforms in the tensioning screw nuts and the supporting and tensioning screw nuts; the expanding engaging screws are used for the butt joint between the prefabricated components.

Description

Upper-screw-lower-top expansion meshing body pile extension button and prefabricated component

Technical field:

The present invention relates to a kind of pile tube connects button, precast plate and connects that button, bridge pier connect button, bridge connects button and electric pole interface and prefabricated component thereof, and adopt pile tube to connect button, precast plate to connect button, bridge pier and connect button, bridge and connect the syndeton between being connected between being connected between being connected between pile tube that button and electric pole interface constitutes and pile tube and pile tube, precast plate and precast plate, bridge pier and bridge pier, electric pole preform rod and preform rod and the preparation method of prefabricated component, the genus prefabricated component connects to be detained and prefabricated component manufacturing field.

Background technology:

Notice of authorization CN2495685Y, title " concrete tubular pile snap joint ", this joint comprises respectively with last, stake is plugged into and is held two affixed end plates, connecting pin, offer screwed hole in the end plate of last stake, connecting pin one end is threaded and can cooperates with the screwed hole of last stake end plate, the other end is square, and both sides have to stagger closes tooth, the end plate below of following stake is embedded with connector box, between two ends of connector box and two pin plates compression spring is housed, the square hole that one end of connecting pin band engaging tooth can pass down on the end plate of stake inserts between two pin plates, on it engaging tooth can be meshing with each other with the tooth of pin plate one side.Its weak point: the one, because following end plate only depends on 6 connector boxs, last stake only depends on volume less than the termination of connector box and the concrete setting in the pile tube together, and can't be connected as a single entity with the longitudinal reinforcement in the pile tube, can't constitute overall structure with the cage of reinforcement in the pile tube, it connects suitable intensity initiative and reliability can't guarantee at all, particularly when connector box and termination are subjected to external impacts, its connector box produces with concrete inevitably with the termination and separates, can't guarantee to go up stake and following reliable the butt joint, this is present present technique field one of insurmountable technical barrier so far; The 2nd, the compression spring in the connector box in the pile crown plate up and down, after pile tube in depth touches underground water down, produce corrosion inevitably, As time goes on the elasticity of its compression spring will progressively disappear, the pile extension fracture takes place at last inevitably, seriously have influence on the safety factor and the safety of the building of building, this not only exists in the docking of the pile tube of this structure and pile tube, and in the docking of the pile tube of other tube pile structure and pile tube, seriously exist, be the present technique field so far still unsolved technical barrier two; The 3rd, when prefabricated, can't solve up and down pile crown plate and concrete and between the crackle that produced and the spillage phenomenon that caused of pile crown plate up and down, therefore reduced concrete intensity, easily pile breaking phenomenon taken place, this be the present technique field so far still unsolved technical barrier three; The 4th, the skirtboard that had of pile crown plate up and down, the circumferential reinforcement that pilespacing head plate place preceding 5～6 is enclosed can't be put and be welded on the longitudinal reinforcement, therefore the length that the reinforcing bar longitudinal extension is produced when haling longitudinal reinforcement, make before the pile crown plate place on several meters to tens of meters the longitudinal reinforcement acyclic at all to reinforcing bar, prefabricated pile tube, fragmentation takes place in its one inevitably, gently then influence piling quality, heavy then cause piling failure, this is that present present technique field is wanted to solve, but so far four of still unsolved technical barrier; The 5th, can't solve some longitudinal reinforcement longitudinal extension uniformity in the pile tube, can't realize that standardization hales the purpose of reinforcing bar, the bad aftereffect that is produced is: can't guarantee pile tube intensity, can't guarantee the uniformity of some pile tube inherent qualities, be that present present technique field is wanted to solve, but so far five of still unsolved technical barrier; The 6th, cost expense height, the fabricating cost of every block of pile crown plate up to 300 yuan about, increased construction costs widely.

Summary of the invention:

Purpose of design: avoid the weak point in the background technology, designing a kind of one is to guarantee that the steel hoop on the pile tube skeleton not only can be around to pile tube skeleton two ends, and can guarantee that its point is welded on the longitudinal reinforcement of skeleton, guarantee the uniformity of pile tube intensity, the fracture of fundamentally avoiding pile tube is with broken; The 2nd, fundamentally solve some longitudinal reinforcement longitudinal extension uniformity in the pile tube, reinforcing bar is haled in the realization standardization, guarantees the uniformity of industrialized mass production pile tube inherent quality; The 4th, guaranteeing to reduce the cost of production of pile tube (bridge prefabrication plate, electric pole precast body etc.) widely under the pile tube butt joint reliable quality prerequisite.

Design scheme: in order to realize purpose of design of the present invention, the present invention adopts the expansion theory of engagement to force the expansion engaging screw moment formation expansion engagement between the pile tube that needs pile extension to be docked.On structure design: 1, the design of drawing nut of rising is one of feature of the present invention, and its major function is: the one, and rise and draw the screw thread in the nut and the screw of expansion engaging screw body section to spin, work to hale reinforcing bar, pile extension; The 2nd, have a reinforced hole at the bottom of the cap of nut, the periphery of reinforced hole is reinforcing bar heading Ka Tai, this reinforcing bar heading card platform can be stuck in the reinforcing bar heading that will connect firmly to rise and draw in the nut.2, to draw the design of nut be two of feature of the present invention on the top, and its major function is: the one, hale the longitudinal reinforcement in the pile tube; The 2nd, be prefabricated component with prefabricated component between (being connected between being connected between pile tube and pile tube, between precast plate and precast plate, bridge pier and bridge pier, electric pole preform rod with between preform rod) when docking, the expansion of expansion meshing-body is engaged on the top and draws in the engagement chamber of expanding in the nut and with the pawl formation expansion of its chamber wall and combine in the expansion engaging screw; The 3rd, the top is provided with a reinforced hole at the bottom of drawing the cap of nut, and the periphery of reinforced hole is reinforcing bar heading Ka Tai, and this reinforcing bar heading card platform can be stuck in the reinforcing bar heading that will connect firmly to rise and draw in the nut.Haling longitudinal reinforcement is meant: the top draw nut with rise draw nut to be through the longitudinal reinforcement of pile tube after, heading is upset at the two ends of its longitudinal reinforcement, its heading is connected to the top firmly and draws nut and rise on the reinforcing bar heading Ka Tai that draws nut, rising this moment draws an end of nut to fix, the top is haled screw and can be realized haling the purpose that longitudinal reinforcement extends after drawing the screw thread in the nut and hale screw and spinning; The 4th, the design that has tapering expansion engagement chamber in the nut is drawn on the top, can satisfy the expansion engagement needs of the expansion tooth section of expansion engaging screw, and the expansion meshing-body in the expansion engaging screw is closed with the engaging tooth formation hook drawknot that meshes in the chamber that expands after expansion firmly.3, the design of expansion engaging screw is three of a feature of the present invention, its major function is: the one, and the expansion tooth section in the expansion engaging screw can draw the expansion in the nut to mesh expansion instantaneous expansion distortion in the chamber after the insertion by force that is subjected to bloated pin on the top, and the expansion tooth section after the dilatancy can be fixed in the expansion engagement chamber by hook lock firmly; The 2nd, the screw section in the expansion engaging screw with rise draw nut to spin after, can moment draw nut to realize that plug-in type expands to mesh and dock with the top, thus can be with docking between pile tube and pile tube with expansion ways of connecting permanent finishing of moment.The bloated pin of expansion engaging screw expansion tooth section end be expansion tooth section be able to that instantaneous expansion struts basic, it is similar to, and taper-----point is gone up thick down, after inserting expansion tooth section, expansion tooth section can be strutted, produces permanent deformation, permanent locking in the expansion engagement chamber of nut is drawn on the top along its guiding wire casing moment of expanding.

Technical scheme 1: upper-screw-lower-top expansion meshing body pile extension button draws nut (3), expansion engaging screw (4) top to draw nut (5) by rising and the pin (6) that expands constitutes, rise and draw nut (3) to be screwed in the screw section of expansion engaging screw (4), during butt joint, the expansion tooth section of expansion engaging screw (4) expands to be engaged under the effect of the pin (6) that expands and pushes up in the expansion engagement chamber of drawing in the nut (5).

Technical scheme 2: the prefabricated component that constitutes by upper-screw-lower-top expansion meshing body pile extension button, prefabricated component (17) two ends are built-in with respectively to rise draws nut (3) and top to draw nut (5), the heading (2) at some longitudinal reinforcements (18) two ends is connected to respectively to rise and draws nut (3) and top to draw reinforcing bar heading Ka Tai (8 in the nut (5) in the reinforcing cage, 11) on, expansion engaging screw (4) is used for docking between prefabricated component and prefabricated component.

Technical scheme 3: prefabricated component that constitutes by upper-screw-lower-top expansion meshing body pile extension button and the docking structure between prefabricated component, the end of two prefabricated components that dock is respectively that several rise and draw nut and draw nut with the top, the screw section of expansion engaging screw is screwed in to rise and draws in the screw thread of nut, the expansion tooth section of expansion engaging screw is inserted the top and is drawn the expansion engagement chamber of nut and bloated pin effect to expand down in expansion engagement chamber in the nut is drawn on the top, finishes docking between prefabricated component and prefabricated component.

Technical scheme 4: the preparation method of making prefabricated component by upper-screw-lower-top expansion meshing body pile extension button, the heading at some longitudinal reinforcement two ends is connected to respectively that the heading Ka Tai that draws nut of rising goes up and the top draws the heading Ka Tai of nut to go up and put it in the shaping mould in the reinforcing cage, placing of concrete, matched moulds, haling rising of prefabricated component die cavity one end simultaneously draws expansion nut to the power that sets, after forcing some reinforcing bars to extend to the length that sets synchronously, centrifugal casting or vibration foundry goods, get promptly that having rises and draw the prefabricated component of expansion nut structure, expansion engaging screw and be used for docking between prefabricated component and prefabricated component.

The present invention compares with background technology, and the one, the defective that the pipe pile reinforcing bar skeleton that does not fundamentally exist background technology to exist separates with pile tube end plate two; The 2nd, the pile extension phenomenon of rupture takes place when fundamentally avoiding present all pile tubes and pile tube pile extension or behind the pile extension, guaranteed the safety factor and the safety of piling quality, fundamentally guaranteed building, particularly the reliability of high-rise building foundation quality; The 3rd, the application is not owing to exist up and down pile crown plate, therefore do not have the crackle that produced between pile crown end plate and the concrete and the spillage phenomenon that caused of pile crown plate up and down, guaranteed pile tube globality and intensity, eliminated the pile breaking phenomenon of background technology existence; The 4th, because the skirtboard that the application does not exist pile crown plate up and down to be had, therefore can make circumferential reinforcement spot weld the longitudinal reinforcement two ends, do not exist to leak to weld and punctuate, when haling longitudinal reinforcement, steel hoop on the longitudinal reinforcement can extend with the extension of longitudinal reinforcement synchronously, guaranteed the uniformity and the globality of pipe pile reinforcing bar skeleton quality, has fundamentally solved piling that background technology exists when stressed, its pile tube fragmentation, the fracture defective; The 5th, expansion meshing-body drawing in the nut pawl of the engagement chamber wall that expands to form expansion hook drawknot with the top to close, guaranteed the reliable connection between pile tube and pile tube in the expansion engaging screw; The 6th, solve the problem that some longitudinal reinforcements in the pile tube can't the standardization longitudinal extension, realized the uniformity of pile tube intensity, pile tube inherent quality; The 6th, reduced the cost of production of pile tube widely, only remove one of tubular pile head end plate, only domestic annual demand is saved about 30 yuan of cost for every more than 100,000,000, can produce unexpected economic benefit and social benefit every year for saving RMB more than 3,000,000,000 yuan; The 7th, start made between pile tube and pile tube, the novel docking structure between precast plate and precast plate, between bridge pier and bridge pier, between electric pole preform rod and preform rod.

Description of drawings:

Fig. 1 is the structural representation of upper-screw-lower-top expansion meshing body pile extension button.

Fig. 2 rises to draw the structural representation of nut.

Fig. 3 is the structural representation that nut is drawn on the top.

Fig. 4 expansion tooth section end construction schematic diagram in the engaging screw that expands.

Fig. 5 is an expansion engaging screw master TV structure schematic diagram.

Fig. 6 is the structural representation that expands and sell.

Fig. 7 is the structural representation of pile tube.

Fig. 8 is the pile tube of upper-screw-lower-top expansion meshing body pile extension button formation and the pile extension structural representation between pile tube or bridge pier and bridge pier or electric pole and electric pole.

Fig. 9 is the precast plate of upper-screw-lower-top expansion meshing body pile extension button formation and the pile extension structural representation between precast plate.

Figure 10 is the partial structurtes schematic diagram of pile tube moulding.

The specific embodiment:

Embodiment 1: with reference to accompanying drawing 1～6.Upper-screw-lower-top expansion meshing body pile extension button draws nut 3, expansion engaging screw 4 and top to draw nut 5 to constitute by rising, rise and draw nut 3 to be screwed in the screw section of expansion engaging screw 4, during butt joint, the expansion tooth section of expansion engaging screw 4 expands to be engaged under the effect of the pin 6 that expands and pushes up in the expansion engagement chamber of drawing in the nut 5, sees accompanying drawing 1.Rise and draw nut 3 to adopt metal (as steel, stainless steel, alloy steel etc.) or nonmetals (as plastics, synthetic plastic, pottery etc.) by existing casting or injection moulding or ceramic sintering or machining technique making, the center at the bottom of the cap that draws nut that rises has reinforced hole 7, the periphery of reinforced hole 7 is a reinforcing bar heading card platform 8, rise and draw the screw thread in the nut 3 to hale reinforcing bar, pile extension effect, see accompanying drawing 2 for haling the pile extension screw thread, plaing; The top draws nut 5 to adopt metal (as steel, stainless steel, alloy steel etc.) or nonmetals (as plastics, synthetic plastic, pottery etc.) by existing casting or injection moulding or ceramic sintering or machining technique making, the top draws the expansion engagement chamber 10 in the nut 5 to have tapering and the wall that meshes chamber 10 that expands is the pawl structure, and it is big down little that the engagement cavity that expands is; The top draws the screw thread 9 on nut 5 tops for haling screw thread, rises and hales action of steel bars.Draw the expansion in the nut to mesh in the chamber 10 for the ease of the expansion tooth section 16 moments insertion top in the expansion engaging screw 4, draw the entrance point of haling screw thread of nut that one circle enlarging is arranged on the top, see accompanying drawing 3.Expansion engaging screw 4 adopts metal (as steel, stainless steel, alloy steel etc.) or nonmetals (as plastics, synthetic plastic etc.) by existing casting or injection moulding or machining technique making, expansion engaging screw 4 is by the pin 6 that expands, expansion meshing-body 16 and screw 15 constitute, expansion meshing-body 16 and screw 15 are overall structure, the wall of expansion engaging screw is suitable toothing and draws the pawl formation expansion of the engagement chamber 10 chamber walls that expand in the nut 5 to combine with the top, the head of swollen pin 6 is inserted in the expansion meshing-body upper end centre pilot passage 13, vertically have 1 or 2 or many guiding wire casing 14 that expands on the wall of guide channel, draw the expansion in the nut to mesh in the chamber 10 for the ease of the expansion tooth section 16 moments insertion top in the expansion engaging screw 4, the arm of angle that connects of the end of the expansion tooth section of expansion engaging screw 4 is outwelled a circle, see attached Figure 4 and 5.

Embodiment 2: with reference to accompanying drawing 7.On the basis of embodiment 1, the prefabricated component (pipe shape, square pipe pile etc.) that constitutes by upper-screw-lower-top expansion meshing body pile extension button, prefabricated component 17 two ends are built-in with respectively to rise draws nut 3 and top to draw nut 5, the heading 2 at some longitudinal reinforcement 18 two ends is connected to respectively to rise and draws nut 3 and push up on the reinforcing bar heading card platform 8 and 11 that draws in the nut 5 in the reinforcing cage, expansion engaging screw 4 is used for docking that (this expansion engaging screw 4 is when pile tube docks with pile tube, and the screw section of its expansion engaging screw is screwed in to rise and carries in the nut 3 between prefabricated component and prefabricated component; When pile tube did not dock with pile tube, its expansion engaging screw 4 drew nut 3 to separate with rising, separately keeping).

Embodiment 3: with reference to accompanying drawing 8.On the basis of

embodiment

1 and 2, prefabricated component that constitutes by upper-screw-lower-top expansion meshing body pile extension button and the docking structure between prefabricated component, the end of two prefabricated components that dock is respectively that several rise and draw nut and draw nut with the top, the screw section of expansion engaging screw is screwed in to rise and draws in the screw thread of nut, the expansion tooth section of expansion engaging screw is inserted the top and is drawn the expansion engagement chamber of nut and bloated pin effect to expand down in expansion engagement chamber in the nut is drawn on the top, finishes docking between prefabricated component and prefabricated component.

Embodiment 4: with reference to accompanying drawing 9.On the basis of

embodiment

1 and 2, precast plate that constitutes by upper-screw-lower-top expansion meshing body pile extension button and the docking structure between precast plate, the end of two precast plates (comprising bridge prefabrication plate, precast floor slab etc.) that dock is respectively that several rise and draw nut and draw nut with the top, the screw section of expansion engaging screw is screwed in to rise and draws in the screw thread of nut, the expansion tooth section of expansion engaging screw is inserted the top and is drawn the expansion engagement chamber of nut and bloated pin effect to expand down in expansion engagement chamber in the nut is drawn on the top, finishes docking between prefabricated component and prefabricated component.

Embodiment 5: with reference to accompanying drawing 10.Make the preparation method of prefabricated component by upper-screw-lower-top expansion meshing body pile extension button, the heading at some longitudinal reinforcement two ends is connected to respectively that the heading Ka Tai that draws nut of rising goes up and the top draws the heading Ka Tai of nut to go up and put it in the shaping mould in the reinforcing cage, placing of concrete, matched moulds, haling rising of prefabricated component die cavity one end simultaneously draws expansion nut to the power that sets, after forcing some reinforcing bars to extend to the length that sets synchronously, centrifugal casting or vibration foundry goods, get promptly that having rises and draw the prefabricated component of expansion nut structure, expansion engaging screw and be used for docking between prefabricated component and prefabricated component.

What need understand is: though the foregoing description is to the present invention's detailed explanation of contrasting; but these embodiment are just illustrative to the present invention; rather than limitation of the present invention, any innovation and creation that do not exceed in the connotation of the present invention all fall within the scope of protection of the present invention.

Claims

1, a kind of prefabricated component that constitutes by upper-screw-lower-top expansion meshing body pile extension end plate, prefabricated component (17) two ends are built-in with respectively to rise draws nut (3) and top to draw nut (5), the heading (2) at some longitudinal reinforcements (18) two ends is connected to respectively to rise and draws nut (3) and top to draw reinforcing bar heading Ka Tai (8 in the nut (5) in the prefabricated component (17), 11) on, it is characterized in that: rise and draw nut (3) to be screwed in the screw section of expansion engaging screw (4), the expansion tooth Duan Chengshun toothing of expansion engaging screw (4), the top draws nut (5) top for haling screw thread (9), the bottom is the engagement chamber (10) of expanding, the top draws the expansion engagement chamber (10) in the nut (5) to have tapering and the wall in the engagement chamber (10) of expanding is the pawl structure, expanding, it is big little to mesh under the chamber (10), during butt joint, the expansion tooth section of expansion engaging screw (4) expands to be engaged on to push up in the expansion engagement chamber of drawing in the nut (5) and with the top under the effect of the pin (6) that expands and draws the pawl of engagement chamber (10) wall that expands in the nut (5) to mesh.

2, the prefabricated component that is made of upper-screw-lower-top expansion meshing body pile extension end plate according to claim 1 is characterized in that: the top draws the screw thread (9) on nut (5) top for haling screw thread.

3, the prefabricated component that constitutes by upper-screw-lower-top expansion meshing body pile extension end plate according to claim 1, it is characterized in that: expansion engaging screw (4) is made of expand pin (6), expansion tooth section (16) and screw section (15), and expansion tooth section (16) and screw section (15) are overall structure.