CN102689358A - Tensioning component and tensioning method of prestressed endless sheet pile and pile including component - Google Patents
Tensioning component and tensioning method of prestressed endless sheet pile and pile including component Download PDFInfo
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- CN102689358A CN102689358A CN2012102073614A CN201210207361A CN102689358A CN 102689358 A CN102689358 A CN 102689358A CN 2012102073614 A CN2012102073614 A CN 2012102073614A CN 201210207361 A CN201210207361 A CN 201210207361A CN 102689358 A CN102689358 A CN 102689358A
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Abstract
The invention provides a tensioning component and a tensioning method of a prestressed endless sheet pile and a pile including the component. The tensioning component comprises a stud (1) and a hollow threaded sleeve (2), wherein the middle of the stud (1) is provided with a through hole which is connected with a prestressed main reinforcement (5); and the stud (1) is connected with one end of the hollow threaded sleeve (2) through a threaded connection mode, and the other end of the hollow threaded sleeve (2) which is fixedly connection with a tensioning plate. According to the invention, an end plate required in the prior art does not need to be used during the tensioning process of prefabricated products such as sheet piles or square piles, and the combination of main reinforcement endless plate tensioning parts is adopted, thereby reducing complicated processes for making end plates, saving manpower and cost and simplifying procedures; and moreover, the entire production cost for making the pile is reduced.
Description
Technical field
The present invention relates to for example pile tube and prestressed concrete such as side's stake prefabrication member field, relate in particular to the stake that the deformed bar in the above-mentioned prestressed concrete member is carried out stretch-draw assembly, the method for stretching of prestressed stretch-draw and comprises said modules.
Background technology
Prestressed concrete member; For example pile tube is important pile foundation material with side's stake etc.; Especially pile tube; It is widely used on the foundation engineering of all kinds of buildings and construction, like fields such as skyscraper, public building, general industry and civil buildings, harbour, harbour, highway, bridges.
The traditional structure of pile tube comprises concrete, steel reinforcement cage, end plate, anchor ear plate parts such as (being also referred to as " anchor ear circle " or " skirtboard "), and pile tube is generally hollow.Wherein, Concrete and steel reinforcement cage form the pile body of pile tube; Steel reinforcement cage then by main muscle or PC rod iron (also being " deformed bar ") and in the shape of a spiral the stirrup of shape continuous welding on main muscle form, steel reinforcement cage generally can be made through mechanized equipments such as seam welders.The two ends of pile tube pile body are pile crown, and traditional tubular pile head is made up of end plate and anchor ear plate, and end plate is arranged on the both ends of pile body, and anchor ear plate and end plate are fixed together through welding or mode such as riveted joint, thus further with the end plate anchor ear on pile body.
End plate is connected with steel reinforcement cage, and when main muscle was carried out stretch-draw, end plate was to bear prestressed parts when carrying out prestressed stretch-draw.The structure of end plate is as shown in Figure 1; End plate 9 integral body are disc; End sheet surface is provided with the main muscle anchor hole 90 that a plurality of sizes are interconnected, and wherein macropore is for wearing muscle hole 901, and aperture is a counter sink 902; The rounded on the whole even cloth of above-mentioned many main muscle anchor holes 90 of group is on end plate 9 surfaces, and the number of above-mentioned main muscle anchor hole 90 is identical with main muscle number.
At present, the production process of pile tube mainly may further comprise the steps: (1) forms the steel reinforcement cage body with main muscle behind the heading and stirrup through the seam welder roll welding; (2) end plate and the welding of anchor ear plate are formed pile crown; (3) carry out cloth with putting into pipe pile die after pile crown and the assembling of steel reinforcement cage body, and matched moulds; Wherein when assembling pile crown and steel reinforcement cage body, need the main muscle behind the heading is first through wearing after the muscle hole passes end plate, move to counter sink, thereby heading is stuck in the counter sink; (4) utilize the stretch-draw machine that main muscle is carried out stretch-draw; (5) with the mould after matched moulds and the stretch-draw be placed on carry out on the centrifuge centrifugal; (5) the maintenance pond steam-cured or utilize autoclave press to steam after, form the pile tube finished product.
Wherein utilizing the stretch-draw machine to carry out in the prestressed stretch-draw process, all adopt the mode of integral tension basically, the mode of integral tension has two kinds of forms: comprise tensioning head method and stretch-draw dish method.The two stretch-draw principle is the same, and the impetus of pulling force mainly concentrates on the center bolt when just adopting the stretch-draw of tensioning head method, and the impetus of pulling force is the neighboring that is distributed in the stretch-draw dish during stretch-draw of stretch-draw dish method.Therefore, when adopting the stretch-draw of stretch-draw dish method, stressed comparatively even, end plate is difficult for tilting, and is particularly suitable for large and medium-sized pile tube is carried out stretch-draw.
For example publication number is CN 202219534 U; Name is called in the patent of " tubular pile pre-stress stretch-draw instrument " and just discloses a kind of mode that adopts the stretch-draw dish that prestressing force master muscle is carried out stretch-draw; Wherein the stretch-draw parts comprise stretch-draw screw mandrel, gripper shoe, locking nut, stretch-draw dish and stretch-draw plate, and the pass order of power is: stretch-draw machine → stretch-draw screw mandrel → stretch-draw dish → stretch-draw plate → end plate → main muscle.
For example publication number is CN 202200392 U again; The patent that name is called " a kind of stretch-draw assembly of stretch-draw prestressing force pile tube master muscle " discloses the mode that adopts the tensioning head method that prestressing force master muscle is carried out stretch-draw in its background technology (seeing this patent accompanying drawing 6); Wherein the stretch-draw parts comprise tensioning head, stretch-draw screw mandrel, locking nut and a plate (also being " stretch-draw plate "), and the pass order of power is: stretch-draw machine → tensioning head → stretch-draw screw mandrel → stretch-draw plate → end plate → main muscle.
Can know by above-mentioned introduction; In the prior art; No matter adopt which kind of mode that main muscle is carried out stretch-draw, all like accompanying drawing 2 and shown in Figure 3, the power of the generation of stretch-draw machine is finally all through stretch-draw plate 6 for stretching process; The connecting elements that also is stretch-draw machine and end plate 6 is delivered to end plate 9, thereby main muscle 5 is carried out prestressed stretch-draw.
That is to say; In the prior art; When prestressing force master muscle is carried out stretch-draw; End plate is being brought into play important role: a side of end plate needs to be fixedly connected through nut etc. with the stretch-draw plate, and the opposite side of end plate need carry out snapping through dowel hole and main muscle, and the power of the generation of stretch-draw machine finally is delivered to main muscle.Also promptly, in the prior art, end plate to pile tube be indispensable parts, especially when main muscle was carried out prestressed stretch-draw, end plate was essential especially.
And identical with pile for prestressed pipe, the manufacture process of prestress square pile comprises steps such as the making, matched moulds cloth, prestressed stretch-draw of steel reinforcement cage, centrifugal, maintenance and high-pressure steaming and cultivating equally.And, to carry out in the process of stretch-draw at the prestressing force master muscle of the other side's stake, prior art need be provided with the power that end plate transmits the stretch-draw machine equally.Therefore, for the production of side's stake, end plate is absolutely necessary equally.
But, no matter be or stake field, side in the pile tube field, when utilizing end plate to carry out stretch-draw, all exist following subject matter:
1, the production cost of end plate itself is higher: end plate operation when processing and fabricating is many, and material and processing charges are high; And when making pile crown, end plate need or weld with the riveted joint of anchor ear plate, and this procedure needs manning and special equipment, is unfavorable for practicing thrift cost of labor and simplifies working process;
2, depositing or the transportation end plates is prone to cause anchor ear plate generation deformation: end-plate material is thick, quality is big; And anchor ear sheet material material is thin, and therefore light weight with after end plate and the riveted joint of anchor ear plate or welding, is prone to cause the distortion of anchor ear plate in transportation;
3, main muscle and end plate assembling difficulty: the cage muscle roll welding during to tail end master's muscle do not worn the muscle dish and retrained; Main muscle roll welding location is inaccurate; Position deviation appears, the cage muscle master's muscle that causes the roll welding moulding during with the assembling of afterbody end plate contraposition difficult, when position deviation is excessive, can't assemble; Need strike the cage muscle that looses, operation repeatedly, efficiency is low;
4, contain end plate in the final finished peg, therefore the whole manufacturing cost of stake is than higher.
Summary of the invention
The object of the invention is to overcome weak point of the prior art, and a kind of end plate that need not is provided, and simple in structure, assembling flexibly, transportation is light, the novel stretch-draw sub-assembly and the method for stretching thereof of sheet pile for no reason of being used for low cost.
In order to achieve the above object, the present invention adopts following scheme:
A kind of prestressing force is the stretch-draw assembly of sheet pile for no reason, and said stretch-draw assembly comprises double-screw bolt and hollow swivel nut, and wherein, the middle part of said double-screw bolt is provided with through hole, is used for being connected with prestressing force master muscle; Said double-screw bolt is connected with an end of said hollow swivel nut through the mode that is threaded.
Further, said prestressing force master muscle is handled through heading; The through hole of said double-screw bolt axially comprises two-part structure along it: counter sink and the perforation of prestressing force master muscle, and wherein said counter bore diameter is bored a hole greater than said prestressing force master muscle; Also be provided with prestressing force master muscle guide groove on the sidewall of said double-screw bolt, import in the counter sink in order to the prestressing force master muscle that will pass through the heading processing.
Further, the outer wall of said double-screw bolt is provided with external screw thread; The inwall of said hollow swivel nut is provided with internal thread, and said internal thread and said external screw thread are a pair of assembling screw threads, in order to said double-screw bolt and said hollow swivel nut are linked together.
Further, the other end of said hollow swivel nut is used for being fixedly connected with tensioning equipment.
Further; Said hollow swivel nut is fixedly connected with stretch-draw plate on the said tensioning equipment; Wherein, said stretch-draw plate is provided with screw, and the quantity of said screw and position are all corresponding with the quantity and the position of the prestressing force master muscle of required stretch-draw; And the internal diameter of said hollow swivel nut is identical with the aperture of said screw, and said hollow swivel nut is fixed together through bolt and said stretch-draw plate.
Further, said stretch-draw assembly also comprises angle Support, and said angle Support comprises planar section and bent angle part, and said planar section is used to be socketed in said hollow swivel nut, and said bent angle partly is used to be welded on the anchor ear plate.
Further; The planar section of said angle Support is provided with locating hole; One end of said hollow swivel nut is provided with step; The diameter of said step is identical with the diameter of said locating hole, with so that said locating hole be linked on the said step, thereby said angle Support and said hollow swivel nut are connected together.
Further, the number of said angle Support is at least three, and evenly is welded on the anchor ear plate.
In addition, the present invention also provide simultaneously a kind of to prestressing force for no reason sheet pile carry out the method for prestressed stretch-draw, specifically may further comprise the steps:
(a) steel reinforcement cage after will machining is put into mould, wherein above-mentioned steel reinforcement cage by prestressing force master muscle and in the shape of a spiral the stirrup that is welded on the main muscle of shape form;
(b) double-screw bolt is installed on the said prestressing force master muscle;
(c) hollow swivel nut is installed on the said double-screw bolt;
(d) other end with said hollow swivel nut is fixedly connected with tensioning equipment;
(e) utilize tensioning equipment to carry out stretch-draw, thereby accomplish prestressed stretch-draw said prestressing force master muscle.
Further, said prestressing force master muscle is handled through heading; The through hole of said double-screw bolt axially comprises two-part structure along it: counter sink and the perforation of prestressing force master muscle, and wherein said counter bore diameter is bored a hole greater than said prestressing force master muscle; Also be provided with prestressing force master muscle guide groove on the sidewall of said double-screw bolt; Wherein, in said step (b), said prestressing force master muscle is imported in the said counter sink through said prestressing force master muscle guide groove.
Further; In said step (c), the outer wall of said double-screw bolt is provided with external screw thread, and the inwall of said hollow swivel nut is provided with internal thread; Said internal thread and external screw thread are a pair of assembling screw threads, through said internal thread and said external screw thread said double-screw bolt and hollow swivel nut are linked together.
Further, in said step (d), said tensioning equipment has the stretch-draw plate; Said hollow swivel nut is fixedly connected with said stretch-draw plate; Wherein, said stretch-draw plate is provided with screw, and the quantity of said screw and position are all corresponding with the quantity and the position of the prestressing force master muscle of required stretch-draw; And the internal diameter of said hollow swivel nut is identical with the aperture of said screw, and said hollow swivel nut is fixed together through bolt and said stretch-draw plate.
Further, in said step (e), said tensioning equipment carries out stretch-draw to said stretch-draw plate, thereby at the prestressed stretch-draw of accomplishing said prestressing force master muscle.
Further, also comprise the steps: in step (c) with (d)
(f) angle Support is provided, said angle Support comprises planar section and bent angle part, and said bent angle partly is welded on the anchor ear plate, and said planar section is socketed on the said hollow swivel nut.
Further; The planar section of said angle Support is provided with locating hole, and an end of said hollow swivel nut is provided with step, and the diameter of said step is identical with the diameter of said locating hole; Said locating hole is linked on the said step, thereby said angle Support and said hollow swivel nut are connected together.
Further, the number of said angle Support is at least three, and evenly is welded on the anchor ear plate.
In addition, the present invention also provides a kind of prestressing force sheet pile for no reason simultaneously, and wherein said stake is pile tube or side's stake, and said pile tube or side's stake comprise above-mentioned arbitrary stretch-draw assembly.
In sum, with respect to prior art, prestressing force provided by the invention for no reason sheet pile stretch-draw assembly, method for stretching and comprise that the sheet pile for no reason of above-mentioned stretch-draw assembly has following beneficial effect:
The present invention is carrying out need not to adopt the end plate that must use in the prior art in the stretching process to prefabrication members such as pile tube or side's stakes; But adopt main muscle not have the combination of end plate stretch-draw part; Thereby reduced the loaded down with trivial details operation of making end plate, practiced thrift manual work, practiced thrift cost, simplified operation; And it is little not have the part that the end plate stretching method uses, assemble light, high efficiency during operation, labour intensity is little; And, therefore can reduce the manufacturing cost of making stake on the whole owing to do not contain end plate in the final stake.
Description of drawings
Fig. 1 is the sectional elevation of end plate;
Fig. 2 is the sketch map (sectional side elevation) of the stretch-draw assembly that is used to have the end plate stake in the prior art;
Fig. 3 is the sketch map (cross-sectional figure) of the stretch-draw assembly that is used to have the end plate stake in the prior art;
Fig. 4 is the sketch map (sectional side elevation) of the stretch-draw assembly of sheet pile for no reason that is used for of the present invention;
Fig. 5 is the sketch map of the stretch-draw assembly of sheet pile (cross-sectional figure) for no reason that is used for of the present invention;
Fig. 6 is for the sketch map (sectional side elevation) of the stretch-draw assembly assembling form 1 of sheet pile for no reason that is used for of the present invention, comprising double-screw bolt 1, hollow swivel nut 2 and angle Support 3;
Fig. 7 is for the sketch map (sectional side elevation) of the stretch-draw assembly assembling form 2 of sheet pile for no reason that is used for of the present invention, comprising double-screw bolt 1 and hollow swivel nut 2;
Fig. 8 is the sketch map (sectional side elevation) of the double-screw bolt of one of stretch-draw assembly of the present invention;
Fig. 9 is another sketch map (cross-sectional figure) of the double-screw bolt of one of stretch-draw assembly of the present invention;
Figure 10 is the sketch map (sectional side elevation) of the hollow swivel nut of one of stretch-draw assembly of the present invention;
Figure 11 is the sketch map (cross-sectional figure) of the angle Support of one of stretch-draw assembly of the present invention;
Figure 12 is another sketch map (sectional side elevation) of the angle Support of one of stretch-draw assembly of the present invention;
Figure 13 is the sketch map (sectional side elevation) of stretch-draw plate;
Figure 14 is the sketch map (sectional side elevation) of stretch-draw crab bolt.
The specific embodiment
Below in conjunction with the accompanying drawing and the specific embodiment, the present invention is further described:
To shown in Figure 14, stretch-draw assembly of the present invention mainly comprises double-screw bolt 1 and hollow swivel nut 2 like Fig. 4.In above-mentioned double-screw bolt 1, be provided with through hole, be used in when carrying out tension operation and be connected with prestressing force master muscle 5, common connected mode is that prestressing force master muscle 5 is snapped onto in the above-mentioned through hole.The outer wall of above-mentioned double-screw bolt 1 is provided with external screw thread 11.The inwall of above-mentioned hollow swivel nut 2 is provided with internal thread 21; This internal thread 21 is identical with external screw thread 11 specifications of above-mentioned double-screw bolt 1; Be a pair of assembling screw thread, make above-mentioned hollow swivel nut 2 to assemble and be fixed together through internal thread 21 and external screw thread 11 and double-screw bolt 1.Fig. 5 shows the situation that hollow swivel nut 2 and double-screw bolt 1 are assembled together.
When carrying out tension operation, the other end of above-mentioned hollow swivel nut 2 can be used for connecting the stretch-draw plate 6 of tensioning equipment.The pulling force that above-mentioned hollow swivel nut 2 is fixed on the above-mentioned stretch-draw plate 6 and the stretch-draw machine is produced is delivered on the prestressing force master muscle 5, thereby prestressing force master muscle 5 is carried out stretch-draw.Above-mentioned internal thread 21 is preferably the full thread structure with external screw thread 11.
Preferably, shown in figure 13, above-mentioned stretch-draw plate 6 is provided with all corresponding screw 61 of quantity and position with above-mentioned prestressing force master muscle 5.Shown in figure 14, bolt 7 comprises head 71 and bar portion 72, and above-mentioned bar portion 72 is provided with screw thread 73, and this screw thread 73 is identical with above-mentioned internal thread 21 specifications, is a pair of assembling screw thread.The diameter of the screw 61 of above-mentioned stretch-draw plate 6 is less than the diameter of the head 71 of above-mentioned bolt 7 but more than or equal to the diameter of above-mentioned bar portion 72, thereby can let above-mentioned bar portion 72 pass and stop that above-mentioned head 71 passes.Wherein, When carrying out tension operation; Let the bar portion 72 of above-mentioned bolt 7 pass the screw 61 of above-mentioned stretch-draw plate 6, make the internal thread 21 of screw thread 73 and above-mentioned hollow swivel nut 2 in the above-mentioned bar portion 72 assemble, and above-mentioned hollow swivel nut 2 is fixed on the above-mentioned stretch-draw plate.More preferably, above-mentioned screw thread 73 is the full thread structure.
As shown in Figure 6, except that above-mentioned double-screw bolt 1 and above-mentioned hollow swivel nut 2, stretch-draw assembly of the present invention preferably also further comprises angle Support 3.
Like Figure 11 and shown in Figure 12; Angle Support 3 has following structure: angle Support 3 comprises planar section 30 and bent angle part 32; Wherein planar section 30 is provided with locating hole 31, is used for carrying out socket with above-mentioned hollow swivel nut 2, and bent angle part 32 is used for and 4 welding of anchor ear plate; This angle Support 3 is located on anchor ear plate 4, thereby the position of steel reinforcement cage is decided.Because in the finished peg that final production is come out, anchor ear plate, steel reinforcement cage all have concrete position distribution relation.In the manufacturing process of stake, anchor ear plate 4 is to be fixed in the mould.Among the present invention; The prestressing force master muscle 5 of steel reinforcement cage is to link together with double-screw bolt 1 and above-mentioned hollow swivel nut 2; Therefore through being welded on the bent angle part 32 of angle Support 3 on the anchor ear plate 4, being socketed in planar section 30 simultaneously and stating on the hollow swivel nut 2, just can realize the location of steel reinforcement cage.Preferably, it is two that above-mentioned angle Support 3 is provided with number, and evenly is welded on the anchor ear plate 4, the location up and down that can realize steel reinforcement cage like this; More preferably, the number that above-mentioned angle Support 3 is provided with is at least three, and evenly is welded on the anchor ear plate 4, like this when realizing the location up and down of steel reinforcement cage, can also realize steel reinforcement cage about the location.
Like Fig. 8 and shown in Figure 9; Double-screw bolt 1 of the present invention preferably has following structure: the through hole that is connected with above-mentioned prestressing force master muscle 5 that double-screw bolt 1 center is provided with axially comprises two-part structure along it; Specifically comprise counter sink 12 and prestressing force master muscle perforation 13; Wherein holding the heading of the prestressing force master muscle of handling through heading 5, and above-mentioned prestressing force master muscle perforation 13 can let above-mentioned prestressing force master muscle 5 pass but can stop that the heading of above-mentioned prestressing force master muscle 5 passes counter sink 12 diameters greater than prestressing force master muscle perforation 13.More preferably, a side of double-screw bolt 1 also is provided with prestressing force master muscle guide groove 14, is used for the heading of the prestressing force master muscle 5 after handling through heading is imported counter sink 12.
Like Fig. 4, Fig. 6, Fig. 7 and shown in Figure 10, preferably, an end of hollow swivel nut 2 of the present invention is provided with step 22, and the diameter of the locating hole 31 on the diameter of this step 22 and the angle Support 3 is identical, thereby step 22 forms the equipped hole of a pair of clearance-type with locating hole 31.Simultaneously, when double-screw bolt 1 and hollow swivel nut 2 were threaded, this step 22 can make operation more convenient.
Below in conjunction with prestressing force of the present invention for no reason the method for stretching of sheet pile the course of work of the present invention is further explained.
Like Fig. 4 and shown in Figure 5, the prestressing force of the present invention method for stretching of sheet pile for no reason mainly may further comprise the steps:
(a) steel reinforcement cage after will machining is put into mould; Wherein above-mentioned steel reinforcement cage by prestressing force master muscle 5 and in the shape of a spiral the stirrup that is welded on the main muscle 5 of shape form; Prestressing force master muscle 5 is along the longitudinal direction setting of pile body, and handle through heading the end of prestressing force master muscle;
(b) at the above-mentioned double-screw bolt 1 of on the end that heading is handled, installing of prestressing force master muscle 5, preferred installation process is: the main muscle guide groove 14 along this double-screw bolt 1 imports prestressing force master muscle in the double-screw bolt 1, and the heading of prestressing force master muscle is dropped in the counter sink 12 of double-screw bolt 1;
(c) hollow swivel nut 2 is installed on the double-screw bolt 1; Preferred installation process is: utilize the internal thread 21 of this hollow swivel nut 2 and the external screw thread 11 of double-screw bolt 1 that hollow swivel nut 2 is screwed on the double-screw bolt 1; After its hollow core swivel nut 2 was screwed on the double-screw bolt 1, the internal thread 21 that still remains with certain-length was not assembled on the double-screw bolt 1;
(d) stretch-draw plate 6 and hollow swivel nut 21 are fixed together; Preferred installation process is: the screw 61 on the stretch-draw plate 6 can pass in the bar portion 72 of bolt 7; And further be screwed on the hollow swivel nut 2; Cooperate with the internal thread 21 of the certain-length that is kept on the hollow swivel nut 2, thereby hollow swivel nut 2 is fixed on stretch-draw plate 6.
In addition, if in stretching process, use angle Support 3, also can comprise the steps: in step (c) with (d) so
(f) three or many angle Supports 3 are provided; Its even point is welded on anchor ear plate 4 inner rings; And the anchor ear plate 4 after will welding is connected with hollow swivel nut 2 with the welding assembly that said angle Support 3 constitutes; The step 22 that makes hollow swivel nut 2 and the locating hole 31 of said angle Support 3 be fit mutually, thereby angle Support 3 and hollow swivel nut 2 are connected together.
Through above-mentioned steps (d), accomplished the connection procedure of stretch-draw sub-assembly of sheet pile for no reason of the present invention and stretch-draw machine.
For the other end of prestressing force master muscle 5, can adopt the stretch-draw assembly that comprises double-screw bolt 1 and hollow swivel nut 2 to be fixed on the mould equally.
Next, can utilize the mode of integral tensions such as tensioning head method of the prior art or stretch-draw dish method, the stretch-draw machine is connected with the stretch-draw plate, and then prestressing force master muscle is carried out prestressed stretch-draw.
After the stretch-draw step was accomplished, above-mentioned stretch-draw assembly did not take out, but becomes a part of member of pile tube, proceeded other steps that pile tube is produced, up to producing the pile tube finished product.Therefore, above-mentioned stretch-draw assembly also is double-screw bolt 1 and hollow swivel nut 2 and possibly comprise that also angle Support 3 all is the part of final pile tube finished product.That is to say that the pile tube that utilizes the present invention to generate does not out contain end plate, but contain above-mentioned stretch-draw assembly of the present invention.
For no reason the structure of sheet pile stretch-draw sub-assembly and the introduction of method for stretching can be known to the present invention through above; The present invention has successfully solved traditional existing following problem in the end plate stake stretch-draw sub-assembly that has: the end plate production process is many, cost is high, end plate and anchor ear plate riveting or welding need the manning and special equipment, transportation in the distortion of anchor ear plate, the cage muscle master's muscle that cause assemble problems such as contraposition is difficult, efficiency is low with end plate.Thereby reduced the loaded down with trivial details operation of making end plate, practiced thrift manual work, practiced thrift cost, simplified operation; And it is little that the present invention does not have the part that the end plate stretching method uses, assemble light, high efficiency during operation, labour intensity is little; And, therefore can reduce the manufacturing cost of making stake on the whole owing to do not contain end plate in the final finished peg.
In addition, the above only is the description to specific embodiment of the present invention.Though in above-mentioned specific embodiment; Be to be concrete example description principle of the present invention and technique effect with pile tube; But those skilled in the art should recognize that technical scheme of the present invention is equally applicable to other similar prestressed concrete members, for example square etc.Because identical with pile tube, the manufacture process of prestress square pile comprises steps such as making steel reinforcement cage, cloth matched moulds, prestressed stretch-draw, centrifugal, maintenance and high-pressure steaming and cultivating equally.And, to carry out in the process of stretch-draw at the prestressing force master muscle of the other side's stake, prior art need be provided with the power that end plate transmits the stretch-draw machine equally.Therefore for the manufacturing of side's stake, adopt technical scheme of the present invention, can solve the problems of the technologies described above equally.
In sum, the above is merely specific embodiment of the present invention, but the present invention is not limited thereto, and the variation that any those skilled in the art can think all should drop in protection scope of the present invention.
Claims (17)
1. the prestressing force stretch-draw assembly of sheet pile for no reason is characterized in that said stretch-draw assembly comprises double-screw bolt (1) and hollow swivel nut (2), and wherein, the middle part of said double-screw bolt (1) is provided with through hole, is used for being connected with prestressing force master muscle (5); Said double-screw bolt (1) is connected with an end of said hollow swivel nut (2) through the mode that is threaded.
2. stretch-draw assembly as claimed in claim 1; It is characterized in that; The through hole of said double-screw bolt (1) axially comprises two-part structure along it: counter sink (12) and prestressing force master muscle perforation (13), and wherein said counter sink (12) diameter is greater than said prestressing force master muscle perforation (13); Also be provided with prestressing force master muscle guide groove (14) on the sidewall of said double-screw bolt (1), import in the counter sink (12) in order to the heading that will pass through the prestressing force master muscle (5) that heading handles.
3. stretch-draw assembly as claimed in claim 1 is characterized in that, the outer wall of said double-screw bolt (1) is provided with external screw thread (11); The inwall of said hollow swivel nut (2) is provided with internal thread (21), and said internal thread (21) is a pair of assembling screw thread with said external screw thread (11), in order to said double-screw bolt (1) and said hollow swivel nut (2) are linked together.
4. stretch-draw assembly as claimed in claim 1 is characterized in that, the other end of said hollow swivel nut (2) is used for being fixedly connected with tensioning equipment.
5. stretch-draw assembly as claimed in claim 4; It is characterized in that; Said hollow swivel nut (2) is fixedly connected with stretch-draw plate (6) on the said tensioning equipment; Wherein, said stretch-draw plate (6) is provided with screw (61), and the quantity of said screw (61) and position are all corresponding with the quantity and the position of the prestressing force master muscle (5) of required stretch-draw; And the internal diameter of said hollow swivel nut (2) is identical with the aperture of said screw (61), and said hollow swivel nut (2) is fixed together through bolt (7) and said stretch-draw plate (6).
6. like the arbitrary described stretch-draw assembly of claim 1-5; It is characterized in that; Said stretch-draw assembly also further comprises angle Support (3); Said angle Support (3) comprises planar section (30) and bent angle part (32), and said planar section (30) is used to be socketed in said hollow swivel nut (2), and said bent angle part (32) is used to be welded on the anchor ear plate.
7. stretch-draw assembly as claimed in claim 6; It is characterized in that; The planar section (30) of said angle Support (3) is provided with locating hole (31), and an end of said hollow swivel nut (2) is provided with step (22), and the diameter of said step (22) is identical with the diameter of said locating hole (31); With so that said locating hole (31) be linked on the said step (22), thereby said angle Support (3) and said hollow swivel nut (2) are connected together.
8. stretch-draw assembly as claimed in claim 6 is characterized in that, the number of said angle Support (3) is at least three, and evenly is welded on the anchor ear plate.
One kind to prestressing force for no reason sheet pile carry out the method for prestressed stretch-draw, may further comprise the steps:
(a) steel reinforcement cage after will machining is put into mould, wherein above-mentioned steel reinforcement cage by prestressing force master muscle (5) and in the shape of a spiral the stirrup that is welded on the said prestressing force master muscle (5) of shape form;
(b) double-screw bolt (1) is installed on the said prestressing force master muscle (5);
(c) hollow swivel nut (2) is installed on the said double-screw bolt (1);
(d) other end with said hollow swivel nut (2) is fixedly connected with tensioning equipment;
(e) utilize tensioning equipment to carry out stretch-draw, thereby accomplish prestressed stretch-draw said prestressing force master muscle (5).
10. method as claimed in claim 9 is characterized in that, said prestressing force master muscle (5) is handled through heading; The through hole of said double-screw bolt (1) axially comprises two-part structure along it: counter sink (12) and prestressing force master muscle perforation (13), and wherein said counter sink (12) diameter is greater than said prestressing force master muscle perforation (13); Also be provided with prestressing force master muscle guide groove (14) on the sidewall of said double-screw bolt (1); Wherein, in said step (b), said prestressing force master muscle (5) is imported in the said counter sink (12) through said prestressing force master muscle guide groove (14).
11. method as claimed in claim 9; It is characterized in that; In said step (c), the outer wall of said double-screw bolt (1) is provided with external screw thread (11), and the inwall of said hollow swivel nut (2) is provided with internal thread (21); Said internal thread (21) is a pair of assembling screw thread with external screw thread (11), through said internal thread (21) and said external screw thread (11) said double-screw bolt (1) and hollow swivel nut (2) is linked together.
12. method as claimed in claim 9; It is characterized in that in said step (d), said tensioning equipment has stretch-draw plate (6); Said hollow swivel nut (2) is fixedly connected with said stretch-draw plate (6); Wherein, said stretch-draw plate (6) is provided with screw (61), and the quantity of said screw (61) and position are all corresponding with the quantity and the position of the prestressing force master muscle (5) of required stretch-draw; And the internal diameter of said hollow swivel nut (2) is identical with the aperture of said screw (61), and said hollow swivel nut (2) is fixed together through bolt (7) and said stretch-draw plate (6).
13. method as claimed in claim 9 is characterized in that, in said step (e), said tensioning equipment carries out stretch-draw to said stretch-draw plate (6), thereby at the prestressed stretch-draw of accomplishing said prestressing force master muscle (5).
14. like the arbitrary described method of claim 9-13, it is characterized in that, also comprise the steps: in step (c) with (d)
(f) angle Support (3) is provided, said angle Support (3) comprises planar section (30) and bent angle part (32), and said bent angle part (32) is welded on the anchor ear plate, and said planar section (30) is socketed on the said hollow swivel nut (2).
15. method as claimed in claim 14; It is characterized in that; The planar section (30) of said angle Support (3) is provided with locating hole (31), and an end of said hollow swivel nut (2) is provided with step (22), and the diameter of said step (22) is identical with the diameter of said locating hole (31); Said locating hole (31) is linked on the said step (22), thereby said angle Support (3) and said hollow swivel nut (2) are connected together.
16. method as claimed in claim 14 is characterized in that, the number of said angle Support (3) is at least three, and evenly is welded on the anchor ear plate.
17. a prestressing force is sheet pile for no reason, it is characterized in that, said stake be pile tube or side's stake, and said pile tube or side comprise the described stretch-draw assembly of claim 6.
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| CN201210207361.4A CN102689358B (en) | 2012-06-21 | 2012-06-21 | Tensioning component and tensioning method of prestressed endless sheet pile and pile including component |
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| CN201210207361.4A CN102689358B (en) | 2012-06-21 | 2012-06-21 | Tensioning component and tensioning method of prestressed endless sheet pile and pile including component |
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| CN102689358B CN102689358B (en) | 2014-07-16 |
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| CN104278668A (en) * | 2014-10-20 | 2015-01-14 | 顾孙平 | Embedded iron member and anchor bar connecting structure |
| CN107201744A (en) * | 2017-05-31 | 2017-09-26 | 周兆弟 | Prefabricated components end conformal device and for no reason sheet pile |
| CN110281379A (en) * | 2019-07-02 | 2019-09-27 | 合肥海银杆塔有限公司 | A kind of electric force pole tower anchor device for drawing steel bars and method for stretching |
| CN113172750A (en) * | 2021-04-12 | 2021-07-27 | 建华建材（中国）有限公司 | Tensioning device and tensioning process for enhanced precast pile |
| CN113927728A (en) * | 2021-11-29 | 2022-01-14 | 郑州大学综合设计研究院有限公司 | Novel prestressed concrete mixed reinforcement pipe pile manufacturing device and method |
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| CN113172750A (en) * | 2021-04-12 | 2021-07-27 | 建华建材（中国）有限公司 | Tensioning device and tensioning process for enhanced precast pile |
| CN113172750B (en) * | 2021-04-12 | 2022-06-28 | 建华建材（中国）有限公司 | Tensioning device and tensioning process for enhanced precast pile |
| CN113927728A (en) * | 2021-11-29 | 2022-01-14 | 郑州大学综合设计研究院有限公司 | Novel prestressed concrete mixed reinforcement pipe pile manufacturing device and method |
| CN113927728B (en) * | 2021-11-29 | 2023-01-24 | 郑州大学综合设计研究院有限公司 | Novel prestressed concrete mixed reinforcement pipe pile manufacturing device and method |
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