CN115976989A - Hollow prestressed steel strand - Google Patents
Hollow prestressed steel strand Download PDFInfo
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- CN115976989A CN115976989A CN202310279656.0A CN202310279656A CN115976989A CN 115976989 A CN115976989 A CN 115976989A CN 202310279656 A CN202310279656 A CN 202310279656A CN 115976989 A CN115976989 A CN 115976989A
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- connecting rod
- steel strand
- joint
- prestressed steel
- positioning
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
Abstract
The utility model relates to a cavity prestressing force steel strand relates to the technical field of building engineering material, including the line body, the line body outside is equipped with a plurality of evenly distributed's link, and is adjacent be equipped with the multiunit between the link and wind line body evenly distributed's location supporting component, location supporting component includes parallel and relative head rod and second connecting rod, the one end of head rod is installed one on the link, the one end of second connecting rod is installed another on the link, the one end of head rod articulates there is curved supporting shoe, the supporting shoe is kept away from the last butt of cambered surface of one side of second connecting rod has the stopper, stopper sliding connection is in on the head rod, just the stopper with the second connecting rod rotates to be connected. This application has the effect that improves steel strand wires and bellows firm in connection nature.
Description
Technical Field
The application relates to the field of constructional engineering materials, in particular to a hollow prestressed steel strand.
Background
The steel strand is a steel product formed by twisting a plurality of steel wires, and comprises a prestressed steel strand, wherein the prestressed steel strand comprises a low-relaxation prestressed steel strand without a coating, and is commonly used for bridges, buildings, water conservancy, energy, geotechnical engineering and the like, and also comprises an unbonded prestressed steel strand, and is commonly used for floor slabs, foundation engineering and the like.
When buildings such as bridges are used for reinforcement engineering, corrugated pipes are usually erected on two sides of the bridges, prestressed steel strands penetrate through the corrugated pipes, the prestressed steel strands are anchored and tensioned at two ends of the prestressed steel strands, and then concrete is introduced into the corrugated pipes, so that the corrugated pipes and the prestressed steel strands are fixed.
However, when grouting is performed inside the corrugated pipe, the position of the steel strand in the corrugated pipe is unstable, and the contact position of the steel strand and the corrugated pipe is difficult to fill concrete, so that the corrugated pipe and the prestressed steel strand cannot be firmly combined, and the reinforcing quality of the bridge is difficult to guarantee.
Disclosure of Invention
The application aims at providing a hollow prestressed steel strand.
The application provides a cavity prestressing force steel strand adopts following technical scheme:
the utility model provides a cavity prestressing force steel strand wires, includes the line body, the line body outside is equipped with a plurality of evenly distributed's link, and adjacent be equipped with the multiunit between the link and wind line body evenly distributed's location supporting component, location supporting component includes parallel and relative head rod and second connecting rod, the one end of head rod is installed on one the link, the one end of second connecting rod is installed on another the link, the one end of head rod articulates there is curved supporting shoe, the cambered surface butt on one side of second connecting rod is kept away from to the supporting shoe has a stopper, stopper sliding connection is in on the head rod, just the stopper with the second connecting rod rotates to be connected.
Through adopting the above-mentioned technical scheme, cavity prestressing force steel strand wires alternate and get into inside the bellows and both ends are by the anchor back, line body both ends are by stretch-draw, make the whole extension of line body dragged, make between two adjacent junctions apart from the grow, and then make head rod and second connecting rod keep away from each other, in this process, the stopper extrudees the supporting shoe along the arcwall face of supporting shoe, make the supporting shoe keep away from the one side perk of the line body towards the one end orientation that the stopper was kept away from, and the butt is on the inside wall of bellows, through a plurality of supporting shoes butt bellows simultaneously, make the line body supported and fix a position the center department at the bellows, by this when muddy earth line body is poured into inside the bellows, space between line body and the bellows inner wall can make concrete fully flow and fill, make line body and bellows firm connection from this, and then improve holistic connection quality, in addition, the supporting shoe is fixed the back by the concrete, can play the firm effect of barb, thereby further improve connection stability.
Optionally, a protective sleeve wrapped on the wire body is arranged between the adjacent connecting joints, a positioning groove is formed in a side wall of the protective sleeve, and the positioning support assembly is located in the positioning groove.
Through adopting above-mentioned technical scheme, the protective sheath protection and the fixed line body to improve the fastness of being connected with the concrete, the location supporting component is located the constant head tank, makes head rod and second connecting rod protected in the constant head tank, reduces the possibility that the location supporting component received the impact, improves holistic stability.
Optionally, the outer diameter of the connecting joint is larger than the outer diameter of the protective sleeve, and the cross section of the annular side surface of the connecting joint is arc-shaped.
Through adopting above-mentioned technical scheme, the cross-section of the annular lateral wall of link is the arc for the cambered surface removal that the link can be followed to the concrete reduces the dead angle of being connected between link and the protective sheath, makes the concrete can fully fill, and in addition, the wave formula structure that link and protective sheath formed can improve the fastness that the line body is connected with the concrete.
Optionally, a spring is disposed between the support block and the first connecting rod, and the spring is used for driving the support block to rotate towards the positioning groove.
Through adopting above-mentioned technical scheme, under the effect of spring, the supporting shoe is the butt all the time on the stopper, and when the line body was not tensioned, the supporting shoe was whole to be located the constant head tank, did not lead to the fact the hindrance to this in penetrating the bellows to the line body, improved the efficiency of construction of whole work.
Optionally, one end of the first connecting rod, which is far away from the second connecting rod, is provided with a clamping rod perpendicular to the first connecting rod, one end of the second connecting rod, which is far away from the first connecting rod, is provided with the same clamping rod, a clamping groove with a T-shaped cross section is formed in the connecting joint, one end of the clamping groove is communicated with the outside, and the clamping rods are all inserted into the other two ends of the clamping groove.
Through adopting above-mentioned technical scheme, the joint pole is pegged graft from the external one end of joint groove intercommunication and is got into the joint inslot, removes the one end in the other both ends in joint groove afterwards to can carry out the slip of limited scope in the one end in joint groove is inside, can make the line body can be crooked at the angle of certain limit from this, and make head rod and second connecting rod can slide in the certain limit, make the supporting shoe can rotate and sink in the constant head tank.
Optionally, a limiting bolt is arranged on the connecting joint and penetrates through the connecting joint and simultaneously penetrates through one end of the clamping groove communicated with the outside.
Through adopting above-mentioned technical scheme, spacing bolt blocks the one end in the external world of joint groove intercommunication for the joint pole blocks at spacing bolt, and the joint pole is restricted at the joint inslot from this, and then improves the fastness that head rod and second connecting rod and link are connected.
Optionally, a plurality of fan blades are arranged on two sides of the first connecting rod, and a plurality of fan blades are arranged on two sides of the second connecting rod.
Through adopting above-mentioned technical scheme, the concrete is pouring the in-process, and the concrete removes along the bellows to promote the flabellum and rotate, the flabellum stirs the concrete at the rotation in-process from this, and then makes the muddy earth distribute evenly on the line body, reduces the space, thereby improves the fastness of connecting.
Optionally, a thread matched with the thread on the wire body is arranged inside the connecting joint, a positioning screw is arranged on the connecting joint, and one end of the positioning screw penetrates through the connecting joint and abuts against the wire body.
Through adopting above-mentioned technical scheme, the link passes through the cooperation of screw thread joint with the line body for the link is difficult to remove along the central line direction of the line body, and set screw further fixed connection link and line body, makes the link be difficult to relative line body and rotates, improves the connection stability of link and line body from this.
In summary, the present application includes at least one of the following beneficial technical effects:
1. the positioning support assembly enables the wire body to be positioned in the middle of the corrugated pipe after the prestress is tensioned, and additional adjustment operation is not needed, so that additional operation steps are not brought while the positioning wire body is supported, the convenience of the whole engineering is improved, and the firmness of connection is further improved;
2. the connection structure of the connection joint and the wire body enables the connection joint to be difficult to move relatively to the wire body, and the stability of the whole structure is further improved.
Drawings
FIG. 1 is a schematic diagram of the overall structure of an embodiment of the present application;
FIG. 2 is a schematic view of the connection structure of the connection joint with the first connection rod and the second connection rod in the embodiment of the present application;
FIG. 3 is a schematic structural view of a positioning support assembly in an embodiment of the present application;
in the figure, 1, a wire body; 2. a connecting section; 21. a clamping groove; 22. a set screw; 3. a protective sleeve; 31. positioning a groove; 4. positioning the support assembly; 41. a first connecting rod; 411. a first connecting groove; 42. a second connecting rod; 421. a second connecting groove; 43. a supporting block; 44. a limiting block; 45. a support bar; 46. a spring; 47. a clamping and connecting rod; 5. a fan blade.
Detailed Description
The present application is described in further detail below with reference to fig. 1-3.
Example (b): a hollow prestressed steel strand, referring to fig. 1, comprises a wire body 1 formed by hinging six steel wires, wherein the center of the wire body 1 is arranged in a hollow mode, a mold is arranged at the center of the wire body 1 in the manufacturing process, then the steel wires are stranded on the mold, the wire body 1 is formed, and then the mold is separated from the wire body 1.
The cover is equipped with a plurality of along 1 central line evenly distributed's of the line body the link 2 in the line body 1 outside, and link 2 sets up to the ring form, and the one side that is close to the line body 1 of link 2 sets up to the screw thread form, and with the screw thread joint cooperation on the 1 lateral wall of the line body. Be equipped with the set screw 22 that a plurality of windings 1 central lines distribute on the link 2, the one end of set screw 22 passes link 2 to with link 2 threaded connection, set screw 22 passes the one end butt of link 2 on the outer wall of the line body 1, and the joint between the adjacent steel wire.
Be equipped with between the adjacent link 2 and establish the protective sheath 3 on the line body 1, 3 both ends of protective sheath are fixed respectively on two adjacent links 2, and the external diameter of link 2 is greater than protective sheath 3's external diameter, and the cross-section of the terminal surface of keeping away from line body 1 one side of link 2 sets up to the arc, and the arc tip keeps away from one side parallel and level of line body 1 with protective sheath 3.
Referring to fig. 1 and 2, three positioning grooves 31 are formed in the outer side wall of the protective sleeve 3, the three positioning grooves 31 are uniformly distributed around the axis of the protective sleeve 3, two ends of each positioning groove 31 are communicated with the two connecting joints 2 respectively, and a positioning support assembly 4 for connecting the two connecting joints 2 is arranged in each positioning groove 31.
The positioning support component 4 comprises a parallel and opposite first connecting rod 41 and a second connecting rod 42, one end of the first connecting rod 41 is fixedly connected with a clamping rod 47, one side of the connecting link 2, which is far away from the line body 1, is provided with a clamping groove 21 corresponding to the position of the positioning groove 31, on the cross section perpendicular to the central line of the line body 1, the clamping groove 21 is in a T shape, one end of the clamping groove 21 is far away from the line body 1 and is communicated with the outside, the clamping rod 47 is inserted into the clamping groove 21 from the outside and slides to the inside of one end of the clamping groove 21, and the second connecting rod 42 is connected onto the other connecting link 2 in the same structure. The connecting joint 2 can be further provided with a limiting bolt in a penetrating mode, the limiting bolt penetrates through one end, communicated with the outside, of the clamping groove 21, so that the clamping rod 47 is limited in the clamping groove 21, and the limiting bolt is not shown in the drawing.
Referring to fig. 1 and 3, a first connecting groove 411 is formed in one end of the first connecting rod 41 close to the second connecting rod 42, a supporting block 43 is rotatably connected in the first connecting groove 411, the supporting block 43 is arc-shaped, a limiting block 44 abutting against the outer arc surface of the supporting block 43 is arranged in the first connecting groove 411, and the limiting block 44 is located on one side of the supporting block 43 away from the second connecting rod 42. The two ends of the limiting block 44 are fixedly connected with supporting rods 45, waist-shaped holes opposite to the supporting rods 45 are formed in the first connecting rods 41, and the supporting rods 45 penetrate through the waist-shaped holes and slide along the length direction of the waist-shaped holes.
Second connecting groove 421 has been seted up to the one end that second connecting rod 42 is close to first connecting rod 41, and the one end that first connecting rod 41 is close to second connecting rod 42 and supporting shoe 43 all peg graft in second connecting groove 421, and bracing piece 45 passes the downthehole one end of waist type and fixes on second connecting rod 42.
A spring 46 is arranged in the first connecting groove 411, one end of the spring 46 is fixed on the inner wall of the first connecting groove 411 far away from the supporting block 43, the other end of the spring 46 penetrates through the limiting block 44 and is fixed at the end part of the supporting block 43, and the spring 46 pulls the supporting block 43 to rotate and is inserted into the positioning groove 31.
When the both ends of the line body 1 are anchored and tensioned, the line body 1 is extended integrally, make the distance between two adjacent connecting joints 2 grow, first connecting rod 41 and second connecting rod 42 keep away from each other, second connecting rod 42 drives stopper 44 through bracing piece 45 and is close to supporting block 43 and removes, and extrude supporting block 43, make supporting block 43 rotate, supporting block 43 keeps away from the one end rotation perk that is close to second connecting rod 42, and break away from constant head tank 31, the tip of three supporting block 43 butts simultaneously on the inside wall of bellows, make the line body 1 be located the central line of bellows from this.
Both sides of the first connecting rod 41 are rotatably connected with a plurality of fan blades 5, and both sides of the second connecting rod 42 are rotatably connected with the same fan blades 5.
When pouring concrete into the bellows, the concrete stirs flabellum 5 at the removal in-process and rotates to make flabellum 5 mix the concrete in the constant head tank 31, and then reduce the production in space, improve the firm in connection nature.
The implementation principle of the embodiment of the application is as follows: adjust the distance between the head rod 41 and the second connecting rod 42 for the supporting shoe 43 is accomodate in the constant head tank 31, wear to establish the line body 1 in the bellows afterwards, wear to establish the back at line body 1, line body 1 both ends are anchored and stretch-draw, make stopper 44 extrusion supporting shoe 43, the one end rotation that stopper 44 was kept away from to supporting shoe 43 breaks away from constant head tank 31, and then supports line body 1 at the center of bellows, the concrete of pouring this moment gets into in the bellows, until filling completely.
The embodiments of the present invention are preferred embodiments of the present application, and the protection scope of the present application is not limited thereby, wherein like parts are denoted by like reference numerals. Therefore, the method comprises the following steps: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (8)
1. The hollow prestressed steel strand comprises a strand body (1), and is characterized in that a plurality of uniformly distributed connecting joints (2) are arranged on the outer side of the strand body (1), a plurality of groups of positioning and supporting assemblies (4) which are uniformly distributed around the strand body (1) are arranged between every two adjacent connecting joints (2), each positioning and supporting assembly (4) comprises a first connecting rod (41) and a second connecting rod (42) which are parallel and opposite, one end of each first connecting rod (41) is installed on one connecting joint (2), one end of each second connecting rod (42) is installed on the other connecting joint (2), one end of each first connecting rod (41) is hinged to an arc-shaped supporting block (43), a limiting block (44) is abutted to the arc surface of one side, far away from the second connecting rods (42), of each limiting block (44) is connected to the first connecting rods (41) in a sliding mode, and the limiting blocks (44) are rotatably connected with the second connecting rods (42).
2. The hollow prestressed steel strand as claimed in claim 1, wherein a protective jacket (3) covering the wire body (1) is disposed between adjacent connecting joints (2), a positioning groove (31) is formed in a sidewall of the protective jacket (3), and the positioning support assembly (4) is located in the positioning groove (31).
3. Hollow prestressed steel strand as claimed in claim 2, characterized in that the outer diameter of said connecting joint (2) is greater than the outer diameter of said protective sheath (3) and the cross-section of the annular side of said connecting joint (2) is arranged in an arc.
4. Hollow prestressed steel strand as claimed in claim 2, characterized in that between said supporting block (43) and said first connecting rod (41) there is a spring (46) connecting both, said spring (46) being intended to drive said supporting block (43) in rotation towards said positioning slot (31).
5. The hollow prestressed steel strand as claimed in claim 1, wherein a clamping bar (47) perpendicular to the first connecting bar (41) is arranged at one end of the first connecting bar (41) away from the second connecting bar (42), the same clamping bar (47) is arranged at one end of the second connecting bar (42) away from the first connecting bar (41), a clamping groove (21) with a T-shaped cross section is formed in the connecting joint (2), one end of the clamping groove (21) is communicated with the outside, and the clamping bars (47) are inserted into the other two ends of the clamping groove (21).
6. The hollow prestressed steel strand as claimed in claim 5, wherein a limiting bolt is provided on said connecting joint (2), said limiting bolt passes through said connecting joint (2) and simultaneously passes through one end of said clamping groove (21) communicating with the outside.
7. Hollow prestressed steel strand as claimed in claim 1, characterized in that said first connecting rod (41) is provided on both sides with a plurality of blades (5), and said second connecting rod (42) is also provided on both sides with a plurality of blades (5).
8. The hollow prestressed steel strand as claimed in claim 1, wherein said joint (2) has threads matching with the threads of said wire body (1), and said joint (2) has a positioning screw (22), one end of said positioning screw (22) penetrates said joint (2) and abuts against said wire body (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310279656.0A CN115976989B (en) | 2023-03-22 | 2023-03-22 | Hollow prestress steel strand |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310279656.0A CN115976989B (en) | 2023-03-22 | 2023-03-22 | Hollow prestress steel strand |
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| CN115976989A true CN115976989A (en) | 2023-04-18 |
| CN115976989B CN115976989B (en) | 2023-06-09 |
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| CN202310279656.0A Active CN115976989B (en) | 2023-03-22 | 2023-03-22 | Hollow prestress steel strand |
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| CN215887735U (en) * | 2021-09-18 | 2022-02-22 | 无锡科茂金属材料有限公司 | Hollow composite core wire steel strand |
| CN216765875U (en) * | 2022-03-08 | 2022-06-17 | 中冶建工集团有限公司 | Do benefit to anchor rope construction structures placed in middle |
| CN217153313U (en) * | 2022-03-08 | 2022-08-09 | 山东深博建筑工程有限公司 | Device for centering installation pipeline in sleeve |
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2023
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| CN115976989B (en) | 2023-06-09 |
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