CN215104614U - Improved type easy-to-unload anchor clamping piece device for prestressed steel strand temporary stay cable - Google Patents
Improved type easy-to-unload anchor clamping piece device for prestressed steel strand temporary stay cable Download PDFInfo
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- CN215104614U CN215104614U CN202121549094.XU CN202121549094U CN215104614U CN 215104614 U CN215104614 U CN 215104614U CN 202121549094 U CN202121549094 U CN 202121549094U CN 215104614 U CN215104614 U CN 215104614U
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Abstract
The utility model discloses an improved easy-to-unload anchor clamping piece device for a prestressed steel strand temporary stay cable, which comprises a steel strand, an anchor unloading top and an anchor unloading assembly matched with the anchor unloading top, wherein the anchor unloading assembly comprises an anchor plate, a temporary clamping piece and an auxiliary unit; a plurality of first through holes are formed in the top surface of the anchor plate at equal intervals; the side surface of the top of the temporary clamping piece is fixedly connected with the inner side wall of the first flange ring; an anchor unloading fork is detachably connected between the bottom surface of the flange ring and the top surface of the anchor plate; a second through hole is formed in the center of the top surface of the temporary clamping piece; the beam splitting lines of the steel strands penetrate through the first through hole and the second through hole respectively; the beam splitting line of the steel strand penetrates through the second through hole and is abutted against the inner wall of the temporary clamping piece; the outer side surface of the temporary clamping piece is abutted against the first through hole; the top surface of the anchor plate is abutted against the bottom surface of the anchor unloading top; the inner cavity of the auxiliary unit is abutted with the beam splitting line of the steel strand. The utility model discloses a solve prestressing force steel strand wires and be difficult for the problem of taking out because of seeking inaccurate stress point when dismantling the ground tackle clamping piece as interim cable structure system.
Description
Technical Field
The utility model relates to a bridge construction technical field especially relates to an anchor clamping piece device is easily unloaded to interim cable improved generation of prestressing force steel strand wires.
Background
The clamping piece type anchorage device is a tool for anchoring a steel strand by utilizing the friction resistance of a clamping piece and the steel strand. The working principle is that the clamping piece generates a large engaging force on the steel strand under the action of tensile force by utilizing the conicity of the anchor plate and the clamping piece. The porous clamping piece anchorage system is also called group anchorage system, and is composed of porous clamping piece anchorage devices, anchor plates, spiral ribs or reinforcing steel bar meshes and the like. The anchorage device is characterized in that each conical hole is provided with an auxiliary clamping piece on a porous anchorage plate to clamp a steel strand. The steel strand anchoring device has the advantages that any steel strand cannot be anchored to fail, and the integral anchoring failure cannot be caused. Clip-on anchors are therefore used in many pre-stressed architectures. The clamping piece can be blocked in the middle of the anchor plate and the steel strand under the action of prestress, and when the clamping piece of the traditional anchorage device is disassembled, a field constructor can only adopt tools such as crowbars or steel bars to take out the clamping piece from the anchor plate. For a structural system with prestressed steel strands as temporary inhaul cables, temporary anchoring is needed in construction engineering, and disassembly is needed after construction is completed. The traditional anchorage clamping piece is not provided with the tail end big end, so that the stress point of the clamping piece is not clear, and the clamping piece is difficult to take out. For not influencing the construction progress of the prestressed steel strand as a temporary stay cable and other structural systems, a novel prestressed steel strand temporary stay cable improved type easily-detachable anchor clamping piece device is needed to be provided, and the problems are solved.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing an easy anchor clamping piece device that unloads of prestressing force steel strand wires temporary guy cable improved generation to solve the problem that above-mentioned prior art exists, can realize solving prestressing force steel strand wires and regard as the difficult problem of taking out of inaccurate stress point of looking for when dismantling the ground tackle clamping piece as temporary guy cable structural system, provide a new design theory and technical guarantee for temporary guy cable ground tackle clamping piece.
In order to achieve the above object, the utility model provides a following scheme:
the utility model provides an improved easy-to-unload anchor clamping piece device for a prestressed steel strand temporary stay cable, which comprises a steel strand, an anchor unloading top and an anchor unloading assembly matched with the anchor unloading top, wherein the anchor unloading assembly comprises an anchor plate, a temporary clamping piece and an auxiliary unit;
a plurality of first through holes are formed in the top surface of the anchor plate at equal intervals; the side surface of the top of the temporary clamping piece is fixedly connected with the inner side wall of the first flange ring; an anchor unloading fork is detachably connected between the bottom surface of the first flange ring and the top surface of the anchor plate; a second through hole is formed in the center of the top surface of the temporary clamping piece; the beam splitting lines of the steel strands penetrate through the first through hole and the second through hole respectively; the beam splitting line of the steel strand penetrates through the second through hole and is abutted against the inner wall of the temporary clamping piece; the outer side surface of the temporary clamping piece is abutted against the first through hole; the top surface of the anchor plate is abutted against the bottom surface of the anchor unloading top; the outer side face of the auxiliary unit is matched with the anchoring hole in the top face of the anchor unloading top, and the inner cavity of the auxiliary unit is abutted to the beam splitting line of the steel strand.
Preferably, the auxiliary unit comprises a tool jaw adapted to the center of the top of the anchor-removing head; the outer side surface of the tool clamping piece is matched with the anchoring hole on the top surface of the anchor unloading top, the inner side wall of a second flange ring is fixedly connected to the side surface of the top of the tool clamping piece, and a third through hole is formed in the center of the top surface of the tool clamping piece; the third through hole is communicated with the inner cavity of the anchor unloading top; the inner wall of the tool clamping piece is abutted against the beam splitting line of the steel strand; and the beam splitting lines of the steel strands penetrate through the top surface and the bottom surface of the anchor unloading top respectively.
Preferably, the temporary clamping piece and the tool clamping piece are respectively formed by combining a plurality of sub-clamping pieces.
Preferably, the anchor unloading fork comprises a fork head and a fork rod fixedly connected with the middle part of the bottom surface of the fork head; the fork head is of an Contraband-shaped structure; the fork head is respectively detachably connected with the bottom surface of the first flange ring and the top surface of the anchor plate.
Preferably, the distance between the bottom surface of the first flange ring and the top surface of the anchor plate is 3mm-10 mm.
Preferably, the thickness of the first flange ring is 3mm-10 mm.
Preferably, friction threads are formed on the inner side walls of the temporary clamping piece and the tool clamping piece.
The utility model discloses a following technological effect:
the utility model discloses a interim clamping piece top sets up first flange ring for the atress is clear and definite when taking out interim clamping piece, has effectively avoided non-professional instruments such as on-the-spot constructor crowbar or reinforcing bar to skid because of can't finding the condition of the accidental injury even.
The utility model discloses supporting anchor fork that unloads that uses, when unloading the anchor, the tensioning steel strand wires make and unload anchor top portion instrument clamping piece atress back, with unload the anchor fork to the interim clamping piece that this easily unloads of choosing in the prestressing force direction, make again and unload the anchor top and contract and relax prestressing force to reached prestressing force steel strand wires as the structure system convenient to detach's of interim cable purpose.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive labor.
Fig. 1 is a schematic view of the structure of the present invention.
Fig. 2 is a schematic top view of the anchor plate.
Fig. 3 is a schematic structural diagram of a front view of the anchor removing roof.
FIG. 4 is a schematic structural diagram of a front view of the anchor-removing fork.
Fig. 5 is a front view of a tool clip.
Fig. 6 is a schematic structural view of the initial installation of the present invention during the unloading of the anchor.
Fig. 7 is a schematic structural view of the clip moving during the unloading of the anchor.
Fig. 8 is a schematic structural view of the retraction of the anchor unloading top during the anchor unloading of the utility model.
Fig. 9 is a schematic structural diagram of the present invention after a process is finished during anchor unloading.
Fig. 10 is a right side view of the tool and temporary clips.
Fig. 11 is a front view of the temporary clip and the anchor plate in cooperation.
Wherein, the anchor unloading fork-1, the fork head-11, the fork rod-12, the steel strand-2, the anchor unloading top-3, the anchor unloading component-4, the anchor plate-41, the temporary clamping piece-42 and the auxiliary unit-43; the tool clamping piece-431, the second flange ring-432, the first through hole-44, the first flange ring-45, the second through hole-46, the third through hole-47 and the sub-clamping piece-5.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention is described in detail with reference to the accompanying drawings and the detailed description.
Referring to fig. 1-11, the utility model provides an improved easy-to-detach anchor clamping piece device for prestressed steel strand temporary guy cable, which comprises a steel strand 2, an anchor detaching roof 3 and an anchor detaching component 4 matched with the anchor detaching roof 3, wherein the anchor detaching component 4 comprises an anchor plate 41, a temporary clamping piece 42 and an auxiliary unit 43;
a plurality of first through holes 44 are formed in the top surface of the anchor plate 41 at equal intervals; the side surface of the top of the temporary clamping piece 42 is fixedly connected with the inner side wall of a first flange ring 45; an anchor unloading fork 1 is detachably connected between the bottom surface of the first flange ring 45 and the top surface of the anchor plate 41; the center of the top surface of the temporary clamping piece 42 is provided with a second through hole 46; the beam splitting lines of the steel strand 2 penetrate through the first through hole 44 and the second through hole 46 respectively; the split lines of the steel strands 2 penetrate through the second through holes 46 and are abutted against the inner wall of the temporary clamping piece 42; the outer side surface of the temporary clamping piece 42 is abutted against the first through hole 44; the top surface of the anchor plate 41 is abutted against the bottom surface of the anchor unloading top 3; the outer side surface of the auxiliary unit 43 is matched with an anchoring hole on the top surface of the anchor unloading top 3, and the inner cavity of the auxiliary unit 43 is abutted with the beam splitting line of the steel strand 2.
In a further preferred embodiment, the auxiliary unit 43 comprises a tool jaw 431 adapted to the centre of the top of the unloading roof 3; the outer side surface of the tool clamping piece 431 is matched with an anchoring hole on the top surface of the anchor unloading top 3, the inner side wall of a second flange ring 432 is fixedly connected to the side surface of the top of the tool clamping piece 431, and a third through hole is formed in the center of the top surface of the tool clamping piece 431; the third through hole is communicated with the inner cavity of the anchor unloading top 3; the inner wall of the tool clamping piece 431 is abutted with the beam splitting line of the steel strand 2; the beam splitting lines of the steel strand 2 penetrate through the top surface and the bottom surface of the anchor unloading top 3 respectively.
In a further preferred embodiment, the temporary clamping piece 42 and the tool clamping piece 431 are respectively assembled by a plurality of sub-clamping pieces 5.
In a further optimized scheme, the anchor unloading fork 1 comprises a fork head 11 and a fork rod 12 fixedly connected with the middle part of the bottom surface of the fork head 11; the fork head 11 is of an Contraband-shaped structure; the fork 11 is detachably connected with the bottom surface of the first flange ring 45 and the top surface of the anchor plate 41 respectively.
In a further optimized scheme, the distance between the bottom surface of the first flange ring 45 and the top surface of the anchor plate 41 is 3mm-10 mm.
In a further optimized scheme, the thickness of the first flange ring 45 is 3mm-10 mm.
In a further optimized scheme, the inner side walls of the temporary clamping piece 42 and the tool clamping piece 431 are provided with friction threads.
The utility model discloses an embodiment, as shown in FIG. 11, with interim clamping piece 42 lateral surface and first through-hole 44 medial surface looks adaptation, the medial surface and the steel strand wires 2 looks adaptation of interim clamping piece 42 through impel interim clamping piece 42, shortened the distance between first flange ring 45 bottom surface and the anchor slab top surface, because the anchor hole has the tapered bell mouth, firm installation is realized to the side that interim clamping piece 42 inner wall can firmly hold tightly steel strand wires 2, still be provided with friction screw in the further interim clamping piece 42 (not shown in the figure), this very big increase again interim clamping piece 42 inside wall and the frictional force of steel strand wires 2 lateral surface, make the installation more firm, prevent the pine and take off.
In another embodiment of the present invention, for the structure system of the prestressed steel strand 2 as the temporary cable, the elongation Δ of the prestressed steel strand 2 can be obtained by formula 1:
when the formula 2 is established, the prestressed steel strand 2 can complete anchor unloading at one time.
When the formula 3 is established, the prestressed steel strand 2 cannot be disassembled at one time, and the disassembling of the anchor can be completed by repeated operation for many times.
In order to ensure that the anchor unloading roof 3 can work normally, the length of the clamping piece picked out by the anchor unloading fork 1 in each process meets the formula 4.
a < L-f-e equation 4
After the ith process is finished, the elongation of the residual steel strand 2 meets the formula 5
ΔiΔ -i (a + e) formula 5
Wherein: f, the cable force value kN of the prestressed steel strand 2;
a-sectional area of prestressed steel strand 2, mm2；
E, the elastic modulus of the prestressed steel strand 2 is MPa;
Loriginal sourceThe length, mm, of the pre-stressed steel strand 2;
l-available stroke of the anchor unloading top 3 is mm;
f, reserving initial reserved quantity when the anchor unloading top 3 is installed, wherein f can be 50 mm;
e-the anchoring retraction amount (in each process, from the moment that the temporary clamping piece 42 is stressed to the moment that the temporary clamping piece 42 and the anchor plate 41 form the sliding amount of the prestressed steel strand 2 with the locking structure, generally, e is 30 mm);
a-the length of the temporary clamping piece 42 is picked out by the anchor unloading fork 1 in each process, and is mm;
Δiafter the ith process is finished, the elongation of the remaining steel strand 2 is mm;
for practical engineering, the elongation of the prestressed steel strand 2 is large, due to the limitation of the available stroke of the anchor unloading roof 3, the prestressed steel strand 2 cannot complete the anchor unloading at one time, otherwise the anchor unloading roof 3 and the anchor plate 41 form a locking structure in the retraction process, and the purpose of disassembly cannot be achieved, so that the temporary clamping piece 42 needs to be taken out through repeated and repeated operation. In order to ensure that the anchor unloading roof 3 can be normally tensioned after installation and the stressed end of the prestressed steel strand 2 is transferred to the anchor unloading roof 3 from the structure, an initial reserved amount needs to be reserved when the anchor unloading roof 3 is installed, and meanwhile, in order to reduce the number of times of cyclic reciprocation, the length of the temporary clamping piece 42 picked out by the anchor unloading fork 1 in each process is close to the remaining range which can be used by the anchor unloading roof 3 except the anchoring retraction amount lost due to anchoring.
In another embodiment of the present invention, the device is installed and used as shown in fig. 1; after the use is finished and when the anchorage device needs to be disassembled, the specific use method is as follows:
step 1: in the arrangement shown in fig. 1, the prestressed steel strand 2 is led out from the interior of the anchor stripper head 3, and then a finishing tool clamp 431 is provided at the end of the anchor stripper head 3 remote from the temporary clamp 42. As shown in fig. 6, the anchor removing jack 3 is allowed to have a starting reserved amount f at the time of installation, and the installation preparation work before the anchor removing is completed.
Step 2: as shown in fig. 7, the anchor unloading top 3 is lifted to the temporary clamping piece 42 to be loosened, at this time, the stress position of the prestressed steel strand 2 is transferred from the temporary clamping piece 42 on the anchor plate 41 to the tool clamping piece 431 at the end of the anchor unloading top 3, and then the fork 6 designed in a matching way is used for extending into the gap between the first flange ring 45 and the anchor plate 41 from the notch at the top end of the anchor unloading top 3, so as to move the temporary clamping piece 42 in the direction of loosening the prestress.
And step 3: as shown in fig. 8, the anchor-removing top 3 is retracted, and the temporary jaw 42 is again stressed.
And 4, step 4: after the anchor block 3 is retracted to fully force the temporary clip 42, the anchor block 3 is further retracted to remove the end tool clip 431, as shown in fig. 9, completing the clip removal process.
And 5: when the elongation delta of the residual prestressed steel strand 2iΔ -i (a + e) > L-f-e, repeat steps 1-4 above.
Step 6: when the elongation delta of the residual prestressed steel strand 2iThe temporary clip 42 can be disassembled at one time when the delta-i (a + e) < L-f-e.
And 7: the temporary clips 42 of other tunnels on the anchor plate 41 are removed according to the above steps.
In the description of the present invention, it is to be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are merely for convenience of description of the present invention, and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
The above-mentioned embodiments are only intended to describe the preferred embodiments of the present invention, but not to limit the scope of the present invention, and those skilled in the art should also be able to make various modifications and improvements to the technical solution of the present invention without departing from the spirit of the present invention, and all such modifications and improvements are intended to fall within the scope of the present invention as defined in the appended claims.
Claims (7)
1. The utility model provides an anchor clamping piece device is easily unloaded to interim cable modified of prestressed steel strand, includes steel strand (2), unload anchor top (3) and with unload anchor top (3) complex and unload anchor subassembly (4), its characterized in that: the anchor unloading assembly (4) comprises an anchor plate (41), a temporary clamping piece (42) and an auxiliary unit (43);
a plurality of first through holes (44) are formed in the top surface of the anchor plate (41) at equal intervals; the side surface of the top of the temporary clamping piece (42) is fixedly connected with the inner side wall of a first flange ring (45); an anchor unloading fork (1) is detachably connected between the bottom surface of the first flange ring (45) and the top surface of the anchor plate (41); a second through hole (46) is formed in the center of the top surface of the temporary clamping piece (42); the beam splitting lines of the steel strand (2) penetrate through the first through hole (44) and the second through hole (46) respectively; the beam splitting line of the steel strand (2) penetrates through the second through hole (46) and is abutted against the inner wall of the temporary clamping piece (42); the outer side surface of the temporary clamping piece (42) is abutted against the first through hole (44); the top surface of the anchor plate (41) is abutted against the bottom surface of the anchor unloading top (3); the outer side face of the auxiliary unit (43) is matched with an anchoring hole in the top face of the anchor unloading top (3), and the inner cavity of the auxiliary unit (43) is abutted to the beam splitting line of the steel strand (2).
2. The improved easily-detachable anchor clamping piece device for the prestressed steel strand temporary stay cable according to claim 1, wherein: the auxiliary unit (43) comprises a tool clamping piece (431) matched with the top center of the anchor unloading top (3); the outer side surface of the tool clamping piece (431) is matched with an anchoring hole on the top surface of the anchor unloading top (3), the inner side wall of a second flange ring (432) is fixedly connected to the side surface of the top of the tool clamping piece (431), and a third through hole (47) is formed in the center of the top surface of the tool clamping piece (431); the third through hole (47) is communicated with the inner cavity of the anchor unloading roof (3); the inner wall of the tool clamping piece (431) is abutted against the beam splitting line of the steel strand (2); and the beam splitting lines of the steel strand (2) penetrate through the top surface and the bottom surface of the anchor unloading top (3) respectively.
3. The improved easily-detachable anchor clamping piece device for the prestressed steel strand temporary stay cable according to claim 2, is characterized in that: the temporary clamping piece (42) and the tool clamping piece (431) are respectively formed by combining a plurality of sub-clamping pieces (5).
4. The improved easily-detachable anchor clamping piece device for the prestressed steel strand temporary stay cable according to claim 1, wherein: the anchor unloading fork (1) comprises a fork head (11) and a fork rod (12) fixedly connected with the middle part of the bottom surface of the fork head (11); the fork head (11) is of an Contraband-shaped structure; the fork head (11) is detachably connected with the bottom surface of the first flange ring (45) and the top surface of the anchor plate (41) respectively.
5. The improved easily-detachable anchor clamping piece device for the prestressed steel strand temporary stay cable according to claim 1, wherein: the distance between the bottom surface of the first flange ring (45) and the top surface of the anchor plate (41) is 3-10 mm.
6. The improved easily-detachable anchor clamping piece device for the prestressed steel strand temporary stay cable according to claim 1, wherein: the thickness of the first flange ring (45) is 3mm-10 mm.
7. The improved easily-detachable anchor clamping piece device for the prestressed steel strand temporary stay cable according to claim 2, is characterized in that: the inner side walls of the temporary clamping piece (42) and the tool clamping piece (431) are provided with friction threads.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121549094.XU CN215104614U (en) | 2021-07-08 | 2021-07-08 | Improved type easy-to-unload anchor clamping piece device for prestressed steel strand temporary stay cable |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121549094.XU CN215104614U (en) | 2021-07-08 | 2021-07-08 | Improved type easy-to-unload anchor clamping piece device for prestressed steel strand temporary stay cable |
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| CN215104614U true CN215104614U (en) | 2021-12-10 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114934451A (en) * | 2022-05-10 | 2022-08-23 | 柳州欧维姆结构检测技术有限公司 | Method for dismantling steel strand stay cable with steering cable saddle |
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2021
- 2021-07-08 CN CN202121549094.XU patent/CN215104614U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114934451A (en) * | 2022-05-10 | 2022-08-23 | 柳州欧维姆结构检测技术有限公司 | Method for dismantling steel strand stay cable with steering cable saddle |
| CN114934451B (en) * | 2022-05-10 | 2024-05-14 | 柳州欧维姆结构检测技术有限公司 | Dismantling method of steel strand stay cable with steering cable saddle |
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