CN104343118B - For the manufacture of the tensioning equipment of concrete pile with steel strand - Google Patents
For the manufacture of the tensioning equipment of concrete pile with steel strand Download PDFInfo
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- CN104343118B CN104343118B CN201410503074.7A CN201410503074A CN104343118B CN 104343118 B CN104343118 B CN 104343118B CN 201410503074 A CN201410503074 A CN 201410503074A CN 104343118 B CN104343118 B CN 104343118B
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- steel strand
- perforation
- clip assemblies
- contact site
- concrete pile
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B23/00—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects
- B28B23/02—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects wherein the elements are reinforcing members
- B28B23/04—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects wherein the elements are reinforcing members the elements being stressed
- B28B23/043—Wire anchoring or tensioning means for the reinforcements
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B23/00—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects
- B28B23/02—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects wherein the elements are reinforcing members
- B28B23/04—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects wherein the elements are reinforcing members the elements being stressed
- B28B23/06—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects wherein the elements are reinforcing members the elements being stressed for the production of elongated articles
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/22—Piles
- E02D5/58—Prestressed concrete piles
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2250/00—Production methods
- E02D2250/0046—Production methods using prestressing techniques
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Mechanical Engineering (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Manufacturing Of Tubular Articles Or Embedded Moulded Articles (AREA)
- Piles And Underground Anchors (AREA)
- Reinforcement Elements For Buildings (AREA)
Abstract
The present invention relates to a kind of tensioning equipment of concrete pile for the manufacture of having steel strand, comprise reinforcing cage, anchor plate and stretch board, reinforcing cage comprises steel strand, stirrup and end plate, and end plate is connected with steel strand by clip assemblies; End plate and the anchor plate of one end are fixed; It is characterized in that: anchor plate has multiple first perforation, the first Connection Block is removably fixed with in first perforation, first Connection Block has the first tapped through hole, the first tapped through hole internal thread is connected with the first push rod, and the inner of the first push rod is resisted against on the outer face of clip assemblies.By push rod, steel strand are supported to flushing with the outer face of clip assemblies, centrifugal complete after concrete pile do not have steel strand to expose outside the end plate of this end; There is clip assemblies can not to fly out under the plugging action of Connection Block and push rod anchor plate again, avoid flying out fast anchor plate and cause damage equipment and the accident of hurting sb.'s feelings to occur because of clip assemblies, use safer.
Description
Technical field
The invention belongs to the technical field of the pile foundation engineering of all kinds of architectural structure system, particularly relating to a kind of tensioning equipment of concrete pile for the manufacture of having steel strand.
Background technology
Because the tensile strength of steel strand is high, (its tensile strength design load is 1320MPa, tensile strength reaches as high as 1960MPa), in recent years, Chinese Enterprises and scientific research institution are also applied to centrifugal concrete pile to steel strand and have carried out large quantity research, but do not have the technical scheme of practical value so far.For this reason someone develop overcome the be connected and fixed problem of steel strand in pre-tensioning system centrifugal concrete pile, make the main muscle of centrifugal concrete pile inside adopt steel strand become may and there is the concrete pile with steel strand of application value realistic.
A kind of tensioning equipment as disclosed in the application number Chinese invention patent " a kind of pre-tensioning system centrifugal concrete pile and manufacture method with steel strand " that is CN201410034851.8 (notification number is CN103741672A), comprise the reinforcing cage being positioned at concrete pile body, reinforcing cage comprises the main muscle of axial arranged prestressing force, stirrup around the home outside described main muscle and be positioned at the end plate of pile body end, the main muscle of prestressing force is the centrifugal concrete pile of steel strand, at least the end plate of one end adopts clamping piece structure to be connected with steel strand, namely on this block end plate, have the bellmouth that several aperture from the inside to the outside expands gradually, bellmouth and steel strand one_to_one corresponding are arranged, multi-disc intermediate plate is placed with in each bellmouth, the inner surface of each intermediate plate is provided with latch, this multi-disc intermediate plate split forms the clip assemblies in order to clip steel strand, the outer peripheral face of this clip assemblies forms the cone face matched with described bellmouth, internal tooth hole is formed centrally in clip assemblies, each steel strand are all locked by interior perforation through the interior perforation in corresponding clip assemblies, the outer face of clip assemblies flushes with the outer face of described end plate or lower slightly, the end plate of reinforcing cage one end is fixedly connected with anchor plate by bolt, the end plate of the reinforcing cage other end is fixedly connected with stretch board by bolt, this reinforcing cage with stretch board is placed in female die, stretch board is arranged in the die cavity of female die, fit in the outer face of anchor plate and female die.Stretch-draw needs to use gripper shoe, screw rod and locking nut, described gripper shoe and mould opposite side end face are fitted, described stretch board is connected with screw rod, the threaded shank of described screw rod is through the perforation in gripper shoe, described locking nut to be threaded in screw flight bar portion and to be positioned at outside gripper shoe, pull screw rod again and then pull stretch board, end plate and steel strand, Method of Steel Strand Stretching is locked with locking nut after the numerical value of regulation.Pre-stretch-draw step to be carried out respectively to every root steel strand before integral tension, it has on anchor plate bores a hole one to one with clip assemblies, steel strand pass perforation, during pre-stretch-draw, the head of punching jack is passed the perforation on anchor plate and withstands the outer face of clip assemblies, steel strand pass the head of punching jack and are connected with the traction element of punching jack, the traction element pull steel strand of punching jack carry out pre-stretch-draw to these root steel strand and are stretched to specified value, make steel strand generation deformation, then punching jack is unloaded, steel strand bounce back under the effect of self-deformation retraction force, drive clip assemblies clip assemblies and bellmouth or transition bellmouth firmly to be fixed towards direction, the small-bore retraction of bellmouth or transition bellmouth simultaneously, and make the further banding of interior perforation in clip assemblies and stuck steel strand, the last steel strand just exposing outside end plate cut off and polish, and make steel strand not expose outside the outer face of end plate.
Tensioning equipment disclosed in aforementioned patent has the centrifugal concrete pile of steel strand with producing, but also there is following defect in it: the concrete pile after 1, shaping, steel strand in pile body after centrifugal form removal can expose the end of pile body, final finished needs cut off by the steel strand exposing outside end plate outer face and polish, this will cause the waste of steel strand, and has more one manufacturing procedure.2, owing to wanting pre-stretch-draw, for allowing punching jack through anchor plate, larger hole need be had on anchor plate, the aperture in this hole is greater than between the periphery of clip assemblies, in pile body centrifugal forming process, steel strand may cause steel strand fracture in centrifugal forming process because of different in size and unbalance stress, and the fracture of steel strand also may cause clip assemblies to fly out from the hole of anchor plate, clip assemblies flies out fast and there is damage equipment and the accident of hurting sb.'s feelings occurs, and namely there is certain potential safety hazard.
Summary of the invention
Technical problem to be solved by this invention provides one can simplify pile body moulding process for above-mentioned prior art present situation, and whole manufacture process can guarantee that steel strand flush with clip assemblies outer face for the manufacture of the tensioning equipment of concrete pile with steel strand, this tensioning equipment can make each steel strand tension uniform force, can also effectively prevent clip assemblies in pile body manufacturing process from flying out.
The present invention solves the problems of the technologies described above adopted technical scheme: a kind of tensioning equipment of concrete pile for the manufacture of having steel strand, include in order to the anchor plate of end plate connection at reinforcing cage two ends and the stretch board with steel strand, the end plate be wherein connected with anchor plate is connected with steel strand by the clip assemblies be arranged in the bellmouth of end plate, stretch board is also provided with the hitch structure drawing stretch board; It is characterized in that: described anchor plate has multiple first perforation, first perforation is arranged with the steel strand one_to_one corresponding in reinforcing cage, the first Connection Block is removably fixed with in first perforation, first Connection Block has the first tapped through hole, this the first tapped through hole internal thread is connected with the first push rod, and the inner of the first push rod is in order to be resisted against on the outer face of described clip assemblies.
Above-mentioned first perforation is screwed hole, and described first Connection Block is threaded in the first perforation.First Connection Block adopts the mode be threaded to be fixed in the first perforation, is convenient to the dismounting of the first Connection Block, also facilitates and safeguard steel strand and intermediate plate.
The aperture of above-mentioned first perforation is greater than the maximum diameter of hole of described bellmouth, and the first perforation is coaxially arranged with bellmouth.This structure guarantees the scope that bellmouth is positioned at the first perforation completely and projects, and meanwhile, guarantees to fit in the center of the end face of steel strand and the first push rod, is also convenient to the maintenance of intermediate plate.
Above-mentioned first push rod has the first thread rod part and the first contact site, first contact site is in the end of the first thread rod part, and the cross-sectional area of the first contact site is greater than the cross-sectional area of the first thread rod part, this first contact site is in order to contact with the outer face of clip assemblies; The inner face of described first Connection Block, lower than the inner face of anchor plate, supplies the gap of described first contact site axial slip with formation in the first perforation.First contact site the contact surface that can increase the first push rod and clip assemblies is set, contact force is more stably applied to clip assemblies, first contact site that is set in gap provides slipping space, in tensioning equipment use procedure, the first contact site can be made first to retreat certain distance until after the first contact site contacts with the first Connection Block, again by clip assemblies together with moving after steel strand until against the first contact site, due to clip assemblies after move past in journey the state not clamping steel strand being in and loosening, now steel strand also can the slippage of opposing clip assembly, like this can by steel strand and clip assemblies retreats in the lump until steel strand, clip assemblies all contacts with the first contact site, guarantee that steel strand just keep flushing in the incipient stage with clip assemblies, again by screwing the first push rod, promote steel strand and clip assemblies to move forward towards the clamping direction of clip assemblies simultaneously, this process is equivalent to the pre-stretch-draw to steel strand, guarantee that steel strand can not move by opposing clip assembly in integral tension process, guarantee that steel strand outer end remains further to flush with clip assemblies outer end.
The described end plate be connected with stretch board is connected with steel strand by the clip assemblies be arranged in the bellmouth of this end plate, described stretch board has multiple second perforation, second perforation is arranged with steel strand one_to_one corresponding, the second Connection Block is removably fixed with in second perforation, second Connection Block has the second tapped through hole, second tapped through hole internal thread is connected with the second push rod, and the inner of the second push rod is in order to be resisted against on the outer face of described clip assemblies.This structure guarantees that the steel strand of the concrete pile other end also can not expose end plate; without the need to extra, the steel strand exposing outside end plate outer face are cut off and operation of polishing; reduce by one manufacturing procedure, Simplified flowsheet, steel strand that also can not expose because of severing and cause the waste of steel strand.
Above-mentioned second perforation is screwed hole, and described second Connection Block is threaded in the second perforation.
Above-mentioned biperforate aperture is greater than the maximum diameter of hole of described bellmouth, and the second perforation is coaxially arranged with bellmouth.
Above-mentioned second push rod has the second thread rod part and the second contact site, second contact site is in the end of the second thread rod part, and the cross-sectional area of the second contact site is greater than the cross-sectional area of the second thread rod part, this second contact site is in order to contact with the outer face of clip assemblies; The inner face of described second Connection Block, lower than the inner face of stretch board, supplies the gap of described second contact site axial slip with formation in the second perforation.
Above-mentioned hitch structure comprises gripper shoe, screw rod and locking nut, described gripper shoe is in order to fit with mould opposite side end face, described stretch board is connected with screw rod, the threaded shank of described screw rod is through the perforation in gripper shoe, and described locking nut to be threaded in screw flight bar portion and to be positioned at outside gripper shoe.This hitch structure can facilitate and steadily pull end plate, and reach makes, then pulls screw rod and then pull stretch board, end plate and steel strand, is locked by Method of Steel Strand Stretching after the numerical value of regulation with locking nut
Above-mentioned stretch board has counterbore, and the threaded shank of described screw rod is from reinforcing cage inside through the perforation of passing again after the counterbore stretch board in gripper shoe, and the head of described screw rod is sunken in the macropore portion of the counterbore on stretch board.
Compared with prior art, the invention has the advantages that: this tensioning equipment in use, in advance by the stop of push rod, outside promotion steel strand and clip assemblies can make by the outer face of steel strand and clip assemblies simultaneously and ejector pin contact, guarantee flushing of steel strand and clip assemblies outer face, then push rod is tightened again, promote steel strand and clip assemblies to move forward towards the clamping direction of clip assemblies simultaneously, this process is equivalent to the pre-stretch-draw to steel strand, guarantee that steel strand can not move by opposing clip assembly in integral tension process, guarantee that steel strand outer end keeps flushing with clip assemblies outer face all the time further, the concrete pile finally realized after centrifugal completing does not have steel strand to expose outside the end plate of this end, without the need to extra, the steel strand exposing outside end plate outer face are cut off and operation of polishing, reduce by one manufacturing procedure, Simplified flowsheet, steel strand that also can not expose because of severing and cause the waste of steel strand, there is the shutoff by Connection Block and push rod again, even if there is steel strand fracture accident in centrifugal process, clip assemblies can not fly out anchor plate under the plugging action of Connection Block and push rod, avoid flying out fast anchor plate and cause damage equipment and the accident of hurting sb.'s feelings to occur because of clip assemblies, use safer, meanwhile, because steel strand outer end keeps flushing with clip assemblies outer face all the time, make the uniform force of each steel strand during integral tension, prevent steel strand from rupturing because of unbalance stress.
Accompanying drawing explanation
Fig. 1 is the structural representation (the first push rod promotion clip assemblies moves forward to the state after pre-clamped position) of the embodiment of the present invention;
Fig. 2 is the A place enlarged drawing (the first push rod promotion clip assemblies moves forward to the state after pre-clamped position) of Fig. 1;
Fig. 3 is the partial sectional view (moving to the state with the first ejector pin contact after promoting clip assemblies and steel strand) of anchor plate and end plate connection in the embodiment of the present invention;
Fig. 4 be stretch board and end plate connection in the embodiment of the present invention partial sectional view (the second push rod promote clip assemblies move forward to pre-clamped position after state);
Fig. 5 is the partial sectional view (moving to the state with the second ejector pin contact after promoting clip assemblies and steel strand) of stretch board and end plate connection in the embodiment of the present invention;
Fig. 6 is the perspective view of embodiment of the present invention mould therefor.
Detailed description of the invention
Below in conjunction with accompanying drawing embodiment, the present invention is described in further detail.
As shown in figs. 1 to 6, be a preferred embodiment of the present invention.
A kind of tensioning equipment of concrete pile for the manufacture of having steel strand, comprise the anchor plate 2 in order to be connected with the end plate 13 at reinforcing cage 1 two ends with steel strand 11 and stretch board 3, wherein, reinforcing cage 1 comprises axial arranged steel strand 11, stirrup 12 around the home outside steel strand 11 and be positioned at the end plate 13 at two ends, the end plate 13 at two ends is all connected with steel strand 11 by the clip assemblies 4 be arranged in the bellmouth 131 on end plate, the end plate 13 of one end is fixed by bolt 15 and anchor plate 2, the end plate 13 of the other end is fixed by bolt 15 and stretch board 3, stretch board 3 is also provided with the hitch structure drawing stretch board 3.Wherein, clip assemblies 4 concrete structure and steel strand 13 can with reference to background patents by the structure that clip assemblies 4 is connected with end plate 13.
Aforementioned clip assemblies 4 is provided with in the end plate 13 that anchor plate 2 is fixing, anchor plate 2 has multiple number identical with steel strand 11 radical first bore a hole 21, first perforation 21 is screwed hole, the aperture of the first perforation 21 is greater than the maximum diameter of hole of described bellmouth 131, and the first perforation 21 is coaxially arranged with bellmouth 131, the first perforation 21 is arranged with steel strand 11 one_to_one corresponding.The first Connection Block 5 is removably fixed with in first perforation 21, first Connection Block 5 is threaded in the first perforation 21, first Connection Block 5 has the first tapped through hole 51, first tapped through hole 51 internal thread is connected with the first push rod 6, the inner of first push rod 6, in order to be resisted against on the outer face of clip assemblies 4, to flush with the outer face of clip assemblies 4 to steel strand 11 and provides datum.
First push rod 6 has the first thread rod part 61 and the first contact site 62, first contact site 62 is positioned at the end of the first thread rod part 61, and the cross-sectional area of the first contact site 62 is greater than the cross-sectional area of the first thread rod part 61, this first contact site 62 is in order to contact with the outer face of clip assemblies 4; And the inner face of the first Connection Block 5, lower than the inner face of anchor plate 2, supplies the gap X1 of the first contact site 62 axial slip with formation in the first perforation 21.
Also aforementioned clip assemblies 4 is provided with in the end plate 13 that stretch board 3 is fixing, stretch board 3 has multiple number identical with steel strand 11 radical second bore a hole 31, second perforation 31 is screwed hole, the aperture of the second perforation 31 is greater than the maximum diameter of hole of bellmouth 131, and the second perforation 31 is coaxially arranged with bellmouth 131, the second perforation 31 is arranged with steel strand 11 one_to_one corresponding.The second Connection Block 7 is removably fixed with in second perforation 31, second Connection Block 7 is threaded in the second perforation 31, second Connection Block 7 has the second tapped through hole 71, this the second tapped through hole 71 internal thread is connected with the second push rod 8, the inner of second push rod 8, in order to be resisted against on the outer face of clip assemblies 4, provides datum to steel strand 11 with the flushing of outer face of clip assemblies 4.
Second push rod 8 has the second thread rod part 81 and the second contact site 82, second contact site 82 is positioned at the end of the second thread rod part 81, and the cross-sectional area of the second contact site 82 is greater than the cross-sectional area of the second thread rod part 81, this second contact site 82 is in order to contact with the outer face of clip assemblies 4; The inner face of the second Connection Block 7, lower than the inner face of stretch board 3, supplies the gap X2 of the second contact site 82 axial slip with formation in the second perforation 31.
Hitch structure comprises gripper shoe 9, screw rod 10 and locking nut 14, gripper shoe 9 is in order to fit with mould 16 opposite side end face, stretch board 3 is connected with screw rod 10, the threaded shank of screw rod 10, through the perforation 91 in gripper shoe 9, the thread rod part that locking nut 14 is threaded in screw rod 10 is positioned at outside gripper shoe 9.Stretch board 3 has counterbore 32, the threaded shank of screw rod 10 is from reinforcing cage inside through the perforation 91 of passing again after the counterbore 32 stretch board in gripper shoe 9, and the head of screw rod 10 is sunken in the macropore portion of the counterbore 32 on stretch board 10.
The activities adopting aforementioned tensioning equipment to manufacture concrete pile comprises the steps:
(1), the customized cut-off of steel strand 11.
(2), reinforcing cage 1 is made.
(3), allow every root steel strand 11 on reinforcing cage be connected and fixed with end plate 13 by the clip assemblies 4 being positioned at the bellmouth 131 on end plate 13, generally clip assemblies 4 outer face is not exposed in steel strand outer end.
(4), the end plate 13 of reinforcing cage 1 one end is fixedly connected with anchor plate 2 by bolt 15, again the first Connection Block 5 being equipped with the first push rod 6 is threaded onto in the first perforation 21 on anchor plate 2, incipient stage first unscrews the first push rod 6, as shown in Figure 3, until the first contact site 62 retreats to after contacting with the first Connection Block 5 in the first gap X1, again by clip assemblies 4 together with moving after steel strand 11 until against the first contact site 62, due to clip assemblies 4 after move past in journey the state not clamping steel strand 11 being in and loosening, steel strand 11 and clip assemblies 4 can be retreated until steel strand 11 simultaneously like this, clip assemblies 4 all contacts with the first contact site 62, guarantee that steel strand 11 outer end just keeps flushing in the incipient stage with clip assemblies 4 outer face, then rotate with Wrench and screw the first push rod 6, first contact site 62 promotes steel strand 11 and clip assemblies 4 simultaneously and moves forward towards the clamping direction of clip assemblies 4, this process is equivalent to the pre-stretch-draw to steel strand 11, as shown in Figure 2, in the pushing course of whole first push rod 6, guarantee that steel strand 11 outer end remains and flush state with clip assemblies 4 outer face.
(5), the end plate 13 of the reinforcing cage other end is fixedly connected with stretch board 3 by bolt 15, again the second Connection Block 7 being equipped with the second push rod 8 is threaded onto in the second perforation 31 on stretch board 3, incipient stage first unscrews the second push rod 8, as shown in Figure 5, until the second contact site 82 retreats to after contacting with the second Connection Block 7 in the second gap X2, again by clip assemblies 4 together with moving after steel strand 11 until against the second contact site 82, due to clip assemblies 4 after move past in journey the state not clamping steel strand 11 being in and loosening, steel strand 11 and clip assemblies 4 can be retreated until steel strand 11 simultaneously like this, clip assemblies 4 all contacts with the second contact site 82, guarantee that steel strand 11 outer end just keeps flushing in the incipient stage with clip assemblies 4 outer face, then rotate with Wrench and screw the second push rod 8, second contact site 82 promotes steel strand 11 and clip assemblies 4 simultaneously and moves forward towards the clamping direction of clip assemblies 4, this process is equivalent to the pre-stretch-draw to steel strand 11, as shown in Figure 4, in the pushing course of whole second push rod 8, guarantee that steel strand 11 outer end remains and flush state with clip assemblies 4 outer face.
(6), this reinforcing cage 1 with anchor plate 2 and stretch board 3 is placed in the female die 16a of mould 16, stretch board 3 is arranged in the die cavity of female die 16a, and anchor plate 2 is fitted with the outer face of female die 16a, and mould 16 structure can with reference to figure 6.
(7), to female die 16a feeding, the upper mold section 16b of closed die 16;
(8), stretch-draw, at one end by pulling stretch board 3 pairs of reinforcing cages 1 to carry out integral tension, steel strand 11 are stretched to the numerical value of regulation, drive clip assemblies 4 clip assemblies 4 and bellmouth 131 firmly to be fixed towards direction, the small-bore retraction of bellmouth 131 simultaneously, and make the further banding of interior perforation in clip assemblies 4 and stuck steel strand 11, screw locking nut 14 after stretch-draw completes, screw rod 10 is locked at stretch-draw and completes position.
(9), centrifugal forming.
(10), stream curing.
(11), form removal, and remove stretch board 10, anchor plate 8 and the connection of corresponding each end plate 13 carry out putting.
Use the concrete pile of this tensioning equipment manufacture to be cut off and operation of polishing by the steel strand exposing outside end plate 13 outer face without the need to extra, reduce by one manufacturing procedure, Simplified flowsheet, steel strand 11 that also can not expose because of severing and cause the waste of steel strand 11.
Claims (9)
1. one kind for the manufacture of the tensioning equipment of concrete pile with steel strand, comprise the anchor plate (2) in order to be connected with the end plate (13) at reinforcing cage (1) two ends with steel strand (11) and stretch board (3), wherein, the end plate (13) be connected with anchor plate (2) is connected with steel strand (11) by the clip assemblies (4) be arranged in the bellmouth (131) of this end plate, and described stretch board (3) is also provided with the hitch structure drawing stretch board (3); It is characterized in that: described anchor plate (2) has multiple first perforation (21), first perforation (21) is arranged with steel strand (11) one_to_one corresponding in reinforcing cage (1), the first Connection Block (5) is removably fixed with in first perforation (21), first Connection Block (5) has the first tapped through hole (51), this the first tapped through hole (51) internal thread is connected with the first push rod (6), and the inner of the first push rod (6) is in order to be resisted against on the outer face of described clip assemblies (4); Described first push rod (6) has the first thread rod part (61) and the first contact site (62), first contact site (62) is positioned at the end of the first thread rod part (61), and the cross-sectional area of the first contact site (62) is greater than the cross-sectional area of the first thread rod part (61), this first contact site (62) is in order to contact with the outer face of clip assemblies (4); The inner face of described first Connection Block (5), lower than the inner face of anchor plate (2), supplies the gap (X1) of described first contact site (62) axial slip with formation in the first perforation (21).
2. the tensioning equipment of concrete pile for the manufacture of having steel strand according to claim 1, it is characterized in that: described first perforation (21) is screwed hole, and described first Connection Block (5) is threaded in the first perforation (21).
3. the tensioning equipment of concrete pile for the manufacture of having steel strand according to claim 1, it is characterized in that: the aperture of described first perforation (21) is greater than the maximum diameter of hole of described bellmouth (131), and the first perforation (21) is coaxially arranged with bellmouth (131).
4. the tensioning equipment of concrete pile for the manufacture of having steel strand according to claim 1, it is characterized in that: the described end plate (13) be connected with stretch board (3) is connected with steel strand (11) by the clip assemblies (4) be arranged in the bellmouth (131) of this end plate, described stretch board (3) has multiple second perforation (31), second perforation (31) is arranged with steel strand (11) one_to_one corresponding, the second Connection Block (7) is removably fixed with in second perforation (31), second Connection Block (7) has the second tapped through hole (71), this the second tapped through hole (71) internal thread is connected with the second push rod (8), the inner of second push rod (8) is in order to be resisted against on the outer face of described clip assemblies (4).
5. the tensioning equipment of concrete pile for the manufacture of having steel strand according to claim 4, it is characterized in that: described second perforation (31) is screwed hole, and described second Connection Block (7) is threaded in the second perforation (31).
6. the tensioning equipment of concrete pile for the manufacture of having steel strand according to claim 4, it is characterized in that: the aperture of described second perforation (31) is greater than the maximum diameter of hole of described bellmouth (131), and the second perforation (31) is coaxially arranged with bellmouth (131).
7. the tensioning equipment of concrete pile for the manufacture of having steel strand according to claim 4, it is characterized in that: described second push rod (8) has the second thread rod part (81) and the second contact site (82), second contact site (82) is positioned at the end of the second thread rod part (81), and the cross-sectional area of the second contact site (82) is greater than the cross-sectional area of the second thread rod part (81), this second contact site (82) is in order to contact with the outer face of clip assemblies (4); The inner face of described second Connection Block (7), lower than the inner face of stretch board (3), supplies the gap (X2) of described second contact site (82) axial slip with formation in the second perforation (31).
8. according to the arbitrary described tensioning equipment of concrete pile for the manufacture of having steel strand of claim 1 ~ 7, it is characterized in that: described hitch structure comprises gripper shoe (9), screw rod (10) and locking nut (14), described gripper shoe (9) is in order to fit with mould (16) opposite side end face, described stretch board (3) is connected with screw rod (10), the threaded shank of described screw rod (10) is through the perforation (91) in gripper shoe (9), the thread rod part that described locking nut (14) is threaded in screw rod (10) is positioned at gripper shoe (9) outside.
9. the tensioning equipment of concrete pile for the manufacture of having steel strand according to claim 8, it is characterized in that: described stretch board (3) has counterbore (32), the threaded shank of described screw rod (10) is from reinforcing cage (1) inside through the perforation (91) of passing again after the counterbore (32) stretch board (3) in gripper shoe (9), and the head of described screw rod (10) is sunken in the macropore portion of the counterbore (32) on stretch board (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410503074.7A CN104343118B (en) | 2014-09-26 | 2014-09-26 | For the manufacture of the tensioning equipment of concrete pile with steel strand |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410503074.7A CN104343118B (en) | 2014-09-26 | 2014-09-26 | For the manufacture of the tensioning equipment of concrete pile with steel strand |
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| Publication Number | Publication Date |
|---|---|
| CN104343118A CN104343118A (en) | 2015-02-11 |
| CN104343118B true CN104343118B (en) | 2016-01-20 |
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| CN201410503074.7A Active CN104343118B (en) | 2014-09-26 | 2014-09-26 | For the manufacture of the tensioning equipment of concrete pile with steel strand |
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| CN105464107B (en) * | 2016-01-13 | 2017-09-22 | 俞晓东 | Manufacturing equipment and manufacture method for manufacturing steel strand wires steel reinforcement cage |
| CN105538502B (en) * | 2016-01-13 | 2018-02-13 | 俞向阳 | The mounting kit and installation method steel strand wires being installed on end plate |
| CN106013055A (en) * | 2016-07-19 | 2016-10-12 | 周兆弟 | Right-angle pile and fender pile structure |
| CN106013087B (en) * | 2016-07-19 | 2019-05-21 | 周兆弟 | The steel strand wires locking mechanism and application method of prefabricated pile |
| CN106049460B (en) * | 2016-07-19 | 2020-07-17 | 周兆弟 | Precast pile capable of being connected by steel strands and connecting method |
| CN109958232B (en) * | 2019-03-11 | 2021-05-25 | 中国建筑第八工程局有限公司 | Prestressed anchorage device fastening device and use method thereof |
| CN110499754A (en) * | 2019-08-01 | 2019-11-26 | 俞向阳 | Steel strand wires hold assembly, concrete-pile and the manufacturing method of stake |
| CN111535193B (en) * | 2020-05-12 | 2022-09-16 | 温州宏源建设集团有限公司 | Aqueduct prestressing force arc stretch-draw structure |
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| CN103741672A (en) * | 2014-01-24 | 2014-04-23 | 俞向阳 | Pretensioned centrifugal concrete pile with steel stranded wires and manufacturing method |
| CN103882856A (en) * | 2014-03-17 | 2014-06-25 | 俞向阳 | Pre-tensioning method centrifugal concrete pile with steel strands and manufacturing method |
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