CN108466863B - Bundle releasing and paying-off method for prestressed steel strands - Google Patents
Bundle releasing and paying-off method for prestressed steel strands Download PDFInfo
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- CN108466863B CN108466863B CN201810316383.1A CN201810316383A CN108466863B CN 108466863 B CN108466863 B CN 108466863B CN 201810316383 A CN201810316383 A CN 201810316383A CN 108466863 B CN108466863 B CN 108466863B
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- steel
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H49/00—Unwinding or paying-out filamentary material; Supporting, storing or transporting packages from which filamentary material is to be withdrawn or paid-out
- B65H49/02—Methods or apparatus in which packages do not rotate
- B65H49/04—Package-supporting devices
- B65H49/06—Package-supporting devices for a single operative package
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2701/00—Handled material; Storage means
- B65H2701/30—Handled filamentary material
- B65H2701/36—Wires
- B65H2701/362—Tying wires, e.g. for tying concrete reinforcement rods
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- Reinforcement Elements For Buildings (AREA)
- Manufacturing Of Tubular Articles Or Embedded Moulded Articles (AREA)
Abstract
The invention discloses a method for unbinding and paying off a prestressed steel strand, which is characterized by comprising the following steps of: (a) obtaining and installing an unbundling and paying-off device of a prestressed steel strand; (b) before paying off, firstly, fixedly mounting two groove-shaped steel bases at intervals side by side, measuring the outer diameter of the whole bundle of steel strands, reserving the distance between the two groove-shaped steel bases according to the outer diameter of the whole bundle of steel strands, and fixing the two groove-shaped steel bases by adopting foundation fixing bolts; then, placing the whole bundle of steel strands on two groove-shaped steel bases; secondly, mounting square steel upright posts, square steel cross bars and opposite tension rods on the two groove-shaped steel bases, locking the opposite tension rods, and mounting a paying-off guide reinforcement cage; and finally, removing the binding belt of the whole bundle of steel strands, taking a tap from the inner circle of the whole bundle of steel strands, and penetrating out of the guide reinforcement cage for paying off. The bale breaking and paying off method of the prestressed steel strand is easy for design and construction of pile foundation hole forming.
Description
Technical Field
The invention relates to a method for unbinding and paying off prestressed steel strands.
Background
In the traditional steel strand unbinding and paying-off operation, the whole bundle of steel strands is bound and clamped by scaffold steel pipes for paying-off operation, so that the defects of large usage amount of scaffold pipes, complex installation, low work efficiency, difficulty in controlling random loosening of the steel strands in the paying-off process, easiness in causing accidents of hurting people due to popping of the steel strands and the like exist; the ejected steel strand is often twisted, the amount of the wasted steel strand is large, and smooth operation of bundle releasing and paying off of the steel strand is not facilitated; secondly, the whole bundle of steel strands is bound and clamped by the scaffold steel pipes for paying off operation, the operation is not standard, and the operation requirements of site safety and civilized construction are difficult to meet; the method mainly adopts the method for unbinding and paying off the prestressed steel strands, and the construction technology needs to be improved.
Disclosure of Invention
Aiming at the defects of the prior art, the technical problems to be solved by the invention are as follows: how to provide a method for releasing and paying off prestressed steel strands is easy to design and construct pile foundation pore-forming.
In order to solve the technical problems, the invention adopts the following technical scheme:
the method for uncoiling and paying off the prestressed steel strand is characterized by comprising the following steps of:
(a) the method comprises the steps of obtaining an unbundling and paying-off device of the prestressed steel strand, wherein the unbundling and paying-off device of the prestressed steel strand comprises a groove-shaped steel base 3, a square steel upright post 4, a square steel cross bar 5, a split wire rod 6 and a paying-off guide steel bar cage 7; processing and preparing a bale-releasing pay-off device groove-shaped steel base 3, a square steel upright post 4, a square steel cross bar 5, a split wire rod 6 and a pay-off guide reinforcement cage 7;
(b) before paying off, firstly, fixedly installing two groove-shaped steel bases 3 at intervals side by side, measuring the outer diameter of the whole bundle of steel strands 2, reserving the distance between the two groove-shaped steel bases 3 according to the outer diameter of the whole bundle of steel strands 2, and fixing the two groove-shaped steel bases 3 on the position of a selection point of an operation field by adopting foundation fixing bolts 8; subsequently, placing the whole bundle of steel strands 2 on two groove-shaped steel bases 3; next, mounting square steel upright posts 4, square steel cross bars 5 and opposite tension rods 6 on the two groove-shaped steel bases 3, locking the opposite tension rods 6, and mounting a paying-off guide reinforcement cage 7; finally, removing the binding belt of the whole bundle of steel strands 2, tapping from the inner circle of the whole bundle of steel strands 2, and penetrating out of the steel reinforcement cage 7 for paying off through a paying-off guide steel reinforcement cage;
(c) in the paying-off process, when the whole bundle of steel strands 2 is reduced and loosened, the paired tension rods 6 can be symmetrically tightened to longitudinally compress the whole bundle of steel strands 2; until the whole bundle of steel strands 2 is completely laid.
Compared with the prior art, the method for unbinding and paying off the prestressed steel strand has the advantages that:
1. by adopting the fixed special steel strand paying-off form, the whole batch of steel strands can be repeatedly installed and paid off without moving the groove-shaped steel base 3, the rapid formation of a steel strand unbinding and paying-off process under the general condition is ensured, the operation exertion efficiency is high, and the work efficiency is high. The whole bundle of steel strands is unbundled and paid off, and the unbundled and paid off refers to one of the working procedures of blanking, bundling and reeving construction operation on the steel strands in a construction site.
2. The operation formation is standard, and the operation requirements of site safety and civilized construction can be met;
3. the steel strand bundle unloading device is easy to meet the requirements of finished product protection specifications and the required construction technical quality after the steel strand bundle is unbundled and unloaded under the common conditions.
4. The bale breaking and paying-off device for the prestressed steel strands is simple and compact in structure, easy to install and disassemble, small in occupied area and space after being disassembled, and easy to store and transport.
Drawings
Fig. 1 is a schematic structural diagram of a bale breaking and paying-off device adopted in the method for breaking and paying-off the prestressed steel strands;
FIG. 2 is a schematic view of the entire bundle of steel strands of FIG. 1;
FIG. 3 is a schematic view of the channel steel base of FIG. 1;
FIG. 4 is a schematic view of the square steel column of FIG. 1;
FIG. 5 is a schematic view of the square steel cross bar of FIG. 1;
FIG. 6 is a schematic view of the opposing wire rods of FIG. 1;
fig. 7 is a schematic view of the pay-off guide reinforcement cage of fig. 1.
Labeled as: the steel wire unwinding and paying-off device comprises 1-an unbundling and paying-off device, 2-a whole bundle of steel strands, 3-a groove-shaped steel base, 4-a square steel upright post, 5-a square steel cross bar, 6-a split wire rod, 7-an paying-off guide reinforcement cage and 8-a foundation fixing bolt.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
The method for uncoiling and paying off the prestressed steel strand is characterized by comprising the following steps of:
(a) the method comprises the steps of obtaining an unbundling and paying-off device (shown in figure 1) of the prestressed steel strand, wherein the unbundling and paying-off device of the prestressed steel strand comprises a groove-shaped steel base 3, a square steel upright post 4, a square steel cross bar 5, a pair of tension rods 6 and a paying-off guide reinforcement cage 7; processing and preparing a bale-releasing pay-off device groove-shaped steel base 3, a square steel upright post 4, a square steel cross bar 5, a split wire rod 6 and a pay-off guide reinforcement cage 7;
(b) before paying off, firstly, fixedly installing two groove-shaped steel bases 3 at intervals side by side, measuring the outer diameter of the whole bundle of steel strands 2, reserving the distance between the two groove-shaped steel bases 3 according to the outer diameter of the whole bundle of steel strands 2, and fixing the two groove-shaped steel bases 3 on the position of a selection point of an operation field by adopting foundation fixing bolts 8; subsequently, placing the whole bundle of steel strands 2 on two groove-shaped steel bases 3; next, mounting square steel upright posts 4, square steel cross bars 5 and opposite tension rods 6 on the two groove-shaped steel bases 3, locking the opposite tension rods 6, and mounting a paying-off guide reinforcement cage 7; finally, removing the binding belt of the whole bundle of steel strands 2, tapping from the inner circle of the whole bundle of steel strands 2, and penetrating out of the steel reinforcement cage 7 for paying off through a paying-off guide steel reinforcement cage;
(c) in the paying-off process, when the whole bundle of steel strands 2 is reduced and loosened, the paired tension rods 6 can be symmetrically tightened to longitudinally compress the whole bundle of steel strands 2; until the whole bundle of steel strands 2 is completely laid.
After the whole bundle of steel strands 2 is completely placed, the square steel upright posts 4, the square steel cross bars 5 and the opposite tension rods 6 are removed without moving the groove-shaped steel base 3, and the next bundle of steel strands is repeatedly installed to perform paying-off operation.
In the device for unbinding and releasing the prestressed steel strands, an inverted T-shaped groove is formed in the upper surface of each groove-shaped steel base 3;
the square steel upright posts 4 on each groove-shaped steel base 3 are arranged at intervals along the length direction of the inverted T-shaped groove, the lower end of each square steel upright post 4 is provided with an inverted T-shaped head, and the inverted T-shaped heads can slide along the inverted T-shaped groove in a guiding manner and are limited; the upper end of each square steel upright post 4 and the lower section of the square steel upright post are provided with a through hole above the inverted T-shaped head, and the through hole penetrates along the length direction of the inverted T-shaped groove;
the square steel crossbands 5 matched with the two square steel columns 4 adjacent to each other in the spacing direction of the two groove-shaped steel bases 3 are two and are arranged at intervals in the vertical direction, each end part of each square steel crossband 5 is provided with an assembly hole in a penetrating way, the assembly hole on one square steel crossband 5 positioned above is communicated with the through hole at the upper end of the two square steel columns 4 adjacent to each other in the spacing direction of the two groove-shaped steel bases 3 to form an insertion hole for the end part of the opposite tension rod 6 to penetrate through, the assembly hole on one square steel crossband 5 positioned below is communicated with the through holes at the lower sections of the two square steel columns 4 adjacent to each other in the spacing direction of the two groove-shaped steel bases 3 to form an insertion hole for the end part of the opposite tension rod 6 to penetrate through;
a pair of tension rod 6 is fixedly inserted between the two insertion holes which are opposite to each other in the length direction of the inverted T-shaped groove through a locking nut.
During implementation, the large-caliber end of the preferable paying-off guide reinforcement cage 7 is provided with a hanging ring, the square steel cross bar 5 or/and the square steel upright post 4 is/are provided with a hook, and the large caliber of the paying-off guide reinforcement cage 7 is hung on the hook through the hanging ring.
In the unbinding and paying-off device for the prestressed steel strands, the side faces, deviating from each other, of the two groove-shaped steel bases 3 are transversely outwards protruded to form mounting lugs, mounting holes are vertically formed in the mounting lugs in a penetrating mode, and the mounting holes are used for allowing the foundation fixing bolts 8 to penetrate through and to be fixed with the ground.
When the unbundling pay-off device for the prestressed steel strands is dismounted, the split wire rods 6 are firstly dismounted, and then the square steel stand columns 4 are moved out of the inverted T-shaped grooves of the groove-shaped steel base 3 to finish dismounting, so that the dismounting is very convenient and fast.
The fixed special steel strand paying-off device is adopted in the method for paying off the bundle of the prestressed steel strands, the whole bundle of steel strands can be repeatedly installed and paid off a plurality of times without moving the groove-shaped steel base 3, and the operation exertion efficiency is high. The whole bundle of steel strands is unbundled and paid off, and the unbundled and paid off refers to one of the working procedures of blanking, bundling and reeving construction operation on the steel strands in a construction site.
According to the method for unbinding and paying off the prestressed steel strands, the fixed special steel strand paying-off device is adopted, so that the whole batch of steel strands can be repeatedly installed and paid off for many times without moving the groove-shaped steel base 3, the rapid formation of a steel strand unbinding and paying-off process under general conditions is ensured, and the work efficiency is high; the operation formation is standard, and the operation requirements of site safety and civilized construction can be met; the steel strand bundle unloading device is easy to meet the requirements of finished product protection specifications and the required construction technical quality after the steel strand bundle is unbundled and unloaded under the common conditions.
The process flow of the invention is briefly described as follows: (1) according to the corresponding method for unbinding and paying off the prestressed steel strands and the form of a combined device → (2) according to the process design requirements, processing and preparing the square steel stand columns 4, the square steel transverse bars 5, the opposite tension rod 6 and the anchor fixing bolts 8 of the paying off guide steel bar cage 7 → (3) measuring the outer diameters of the whole cargo steel strands 2 → (4) symmetrically installing the groove type steel bases 3 → (5) fixing the positions of the operation field selection points by the anchor fixing bolts 8 → (6) installing the square steel stand columns 4, the square steel transverse bars 5 and the opposite tension rod 6 on the symmetrical groove type steel bases 3 by the tripod and the manual hoist, and locking the tension rod 6 → (8) and installing the paying-off guide reinforcement cage 7 → (9) and removing the binding bands of the steel strands 2 → (10) from the inner circle tap of the whole bundle of steel strands 2, and penetrating out of the guide reinforcement cage 7 to perform paying-off construction operation.
The above is only a preferred embodiment of the present invention, and it should be noted that several modifications and improvements made by those skilled in the art without departing from the technical solution should also be considered as falling within the scope of the claims.
Claims (1)
1. The method for uncoiling and paying off the prestressed steel strand is characterized by comprising the following steps of:
(a) the method comprises the steps of obtaining an unbundling and paying-off device of the prestressed steel strand, wherein the unbundling and paying-off device of the prestressed steel strand comprises a groove-shaped steel base (3), a square steel upright post (4), a square steel cross bar (5), a split wire rod (6) and a paying-off guide reinforcement cage (7); processing and preparing a bale-releasing pay-off device groove-shaped steel base (3), square steel stand columns (4), square steel cross bars (5), a split-draw bar (6) and a pay-off guide reinforcement cage (7); an inverted T-shaped groove is formed in the upper surface of each groove-shaped steel base (3); the square steel upright posts (4) on each groove type steel base (3) are arranged at intervals along the length direction of the inverted T-shaped groove, the lower end of each square steel upright post (4) is provided with an inverted T-shaped head, and the inverted T-shaped heads can slide along the inverted T-shaped groove in a guiding manner and are limited; the upper end of each square steel upright post (4) and the lower section of the square steel upright post are provided with a through hole above the inverted T-shaped head, and the through hole penetrates along the length direction of the inverted T-shaped groove; the square steel crossbands (5) matched with the two square steel columns (4) adjacent to each other in the interval direction of the two groove-shaped steel bases (3) are two and are arranged at intervals in the vertical direction, each end part of each square steel crossband (5) is provided with an assembly hole in a penetrating way, the assembly hole on one square steel crossband (5) above is communicated with the through hole at the upper end of the two square steel columns (4) adjacent to each other in the interval direction of the two groove-shaped steel bases (3) to form an insertion hole for the end part of the opposite tension rod (6) to penetrate through, the assembly hole on one square steel crossband (5) below is communicated with the through hole at the lower section of the two square steel columns (4) adjacent to each other in the interval direction of the two groove-shaped steel bases (3) to form an insertion hole for the end part of the opposite tension rod (6) to penetrate through; a pair of tension rods (6) is fixedly inserted between the two insertion holes which are opposite to each other in the length direction of the inverted T-shaped groove through locking nuts;
(b) before paying off, firstly, fixedly installing two groove-shaped steel bases (3) at intervals side by side, measuring the outer diameter of the whole bundle of steel strands (2) when installing, reserving the distance between the two groove-shaped steel bases (3) according to the outer diameter of the whole bundle of steel strands (2), and fixing the two groove-shaped steel bases (3) at the position of a selection point of an operation site by adopting foundation fixing bolts (8); then, placing the whole bundle of steel strands (2) on two groove-shaped steel bases (3); next, mounting square steel upright posts (4), square steel cross bars (5) and opposite tension rods (6) on the two groove type steel bases (3), locking the opposite tension rods (6), and mounting a paying-off guide reinforcement cage (7); finally, removing the binding belt of the whole bundle of steel strands (2), tapping from the inner circle of the whole bundle of steel strands (2), and penetrating out of the steel reinforcement cage (7) for paying off through paying off guide;
(c) in the paying-off process, when the whole bundle of steel strands (2) is reduced and loosened, the paired tension rods (6) can be symmetrically tightened to longitudinally compress the whole bundle of steel strands (2); until the whole bundle of steel stranded wires (2) is completely laid;
(d) after all the single whole bundle of steel strands (2) are placed, the square steel upright posts (4), the square steel cross bars (5) and the opposite tension rods (6) are detached under the condition that the groove-shaped steel base (3) is not moved, and the next bundle of steel strands is repeatedly installed for paying off operation;
the process flow of the bale breaking and paying off method of the prestressed steel strand is as follows: the method comprises the steps of (I) taking the unbundling and paying-off method of the prestressed steel strand and the unbundling and paying-off device as a reference → (II) according to process design requirements, measuring the outer diameter of a square steel column (4), a square steel horizontal bar (5), a tension rod pair (6), a paying-off guide reinforcement cage (7) and an anchor fixing bolt (8) → (III) and measuring the outer diameter of a whole bundle of steel strand (2) → (IV) symmetrically installing a groove type steel base (3) → (V) fixing the position of an operation field selection point with the anchor fixing bolt (8) → (VI) adopting a tripod and a manual hoist to place the whole bundle of steel strand (2) on the symmetrical groove type steel base (3) → (VII) installing the square steel column (4), the square steel horizontal bar (5) and the tension rod pair (6), locking the tension rod pair (6) → (V) installing the paying-off guide reinforcement cage (7) → (nine) removing a binding band (ten) from the whole bundle of the steel strand (2) The round tap penetrates out of the guide reinforcement cage (7) to carry out paying-off construction operation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810316383.1A CN108466863B (en) | 2018-04-10 | 2018-04-10 | Bundle releasing and paying-off method for prestressed steel strands |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810316383.1A CN108466863B (en) | 2018-04-10 | 2018-04-10 | Bundle releasing and paying-off method for prestressed steel strands |
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| CN108466863A CN108466863A (en) | 2018-08-31 |
| CN108466863B true CN108466863B (en) | 2020-08-04 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110206037B (en) * | 2019-04-30 | 2024-09-17 | 杭州市市政工程集团有限公司 | Flexible underground diaphragm wall construction method with steel strands as main ribs |
| CN110304488A (en) * | 2019-06-18 | 2019-10-08 | 上海市基础工程集团有限公司 | Self-stabilization coils presstressed reinforcing steel and unfolds device |
| CN111041988A (en) * | 2019-12-09 | 2020-04-21 | 中国五冶集团有限公司 | Simple pre-stressed beam steel stranded coil lead frame and manufacturing method thereof |
| CN114352030A (en) * | 2022-01-14 | 2022-04-15 | 中国五冶集团有限公司 | Self-locking prestressed steel strand pulling and paying-off device and construction process thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4890957A (en) * | 1986-02-18 | 1990-01-02 | Rinas David E | Cable laying apparatus |
| EP2015415A1 (en) * | 2007-07-13 | 2009-01-14 | British Telecommunications Public Limited Company | Apparatus for unwinding a wire or cable from a cable spool |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204751674U (en) * | 2015-07-07 | 2015-11-11 | 中建三局第二建设工程有限责任公司 | Unwrapping wire reinforcing apparatus is rolled up to steel strand wires |
| CN206032864U (en) * | 2016-08-31 | 2017-03-22 | 中铁三局集团有限公司 | Integral steel strand wires unloading cage |
| CN206255706U (en) * | 2016-11-20 | 2017-06-16 | 中铁四局集团第四工程有限公司 | A kind of pay off rack for fixing steel stranded wire reel |
| CN207030597U (en) * | 2017-07-21 | 2018-02-23 | 中铁大桥局集团有限公司 | A kind of steel strand wires are explained the deep bid blanking device |
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2018
- 2018-04-10 CN CN201810316383.1A patent/CN108466863B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4890957A (en) * | 1986-02-18 | 1990-01-02 | Rinas David E | Cable laying apparatus |
| EP2015415A1 (en) * | 2007-07-13 | 2009-01-14 | British Telecommunications Public Limited Company | Apparatus for unwinding a wire or cable from a cable spool |
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| CN108466863A (en) | 2018-08-31 |
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