CN220813469U - Supporting plate jacking installation device behind multi-strand cable - Google Patents
Supporting plate jacking installation device behind multi-strand cable Download PDFInfo
- Publication number
- CN220813469U CN220813469U CN202322670736.7U CN202322670736U CN220813469U CN 220813469 U CN220813469 U CN 220813469U CN 202322670736 U CN202322670736 U CN 202322670736U CN 220813469 U CN220813469 U CN 220813469U
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- strands
- strand
- steel
- guide cap
- extrusion head
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- 238000009434 installation Methods 0.000 title claims abstract description 16
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 62
- 239000010959 steel Substances 0.000 claims abstract description 62
- 238000001125 extrusion Methods 0.000 claims abstract description 31
- 238000000034 method Methods 0.000 claims description 2
- 238000010276 construction Methods 0.000 abstract 1
- 238000004873 anchoring Methods 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Abstract
The utility model aims to provide a multi-strand rear supporting plate jacking and installing device which comprises a jack, a steel strand, an extrusion head, a guide cap, a counter-force plate, a single-hole tool anchor and a tool clamping piece, wherein the jack is arranged on the back of the multi-strand rear supporting plate; the steel strands are provided with a plurality of strands, the upper end of the outer side wall of each steel strand is provided with an extrusion head, and the guide cap is sleeved on the extrusion head; the upper ends of the steel strands are respectively assembled on an end anchor at the tail end of each strand through a guide cap; the counter-force plate is provided with wire holes corresponding to the strands of steel strands, and the lower ends of the strands of steel strands respectively penetrate out to the lower side of the counter-force plate through the corresponding wire holes; the lower ends of the strands of steel strands are respectively provided with a single-hole tool anchor, the diameter of the single-hole tool anchor is larger than that of the wire hole, and a tool clamping piece is arranged in the single-hole tool anchor; the jack is arranged between the counter-force plate and the rear supporting plate. The device can effectively solve the problem of extremely difficult reverse installation of the support plate, does not need embedded parts or welded hanging points, is quick and convenient, and has high construction safety.
Description
Technical Field
The utility model relates to the technical field of bridge stay cables, in particular to a jacking and installing device for a multi-strand rear supporting plate.
Background
Due to the outstanding advantages of corrosion resistance, interchangeability and the like of the multi-strand finished anchor cable, the existing anchoring system of the suspension bridge anchorage is applied in a large scale, and the original anchoring system of steel strand grouting is basically replaced. With the increase of span, the weight of the rear supporting plate is different from 100 to 500 kg, the reverse installation in the rear anchor chamber is extremely difficult, and mainly the extrusion friction between the multi-strand anchor head and the cable hole of the rear supporting plate is very large, so that people can reach the problem, and a safe, reliable and efficient system needs to be developed to solve the problem.
Disclosure of utility model
The utility model aims to provide a jacking and mounting device for a multi-strand rear supporting plate, which forms a reverse jacking and mounting system, can effectively realize jacking and mounting of the supporting plate, ensures that the supporting plate is mounted in place, and does not need embedded parts and welding hanging points.
The multi-strand rear supporting plate jacking installation device comprises a jack, a steel strand, an extrusion head, a guide cap, a counter-force plate, a single-hole tool anchor and a tool clamping piece;
The steel strands are provided with a plurality of strands, the upper end of the outer side wall of each steel strand is provided with an extrusion head, and the guide cap is sleeved on the extrusion head; the upper ends of the steel strands are respectively assembled on an end anchor at the tail end of each strand through a guide cap;
The counter-force plate is provided with wire holes corresponding to the strands of steel strands, and the lower ends of the strands of steel strands respectively penetrate out to the lower side of the counter-force plate through the corresponding wire holes; the lower ends of the strands of steel strands are respectively provided with a single-hole tool anchor, the diameter of the single-hole tool anchor is larger than that of the wire hole, and a tool clamping piece is arranged in the single-hole tool anchor;
The jack is arranged between the counter-force plate and the rear supporting plate.
An extrusion head groove and a steel strand groove are formed in the guide cap, the extrusion head groove is positioned below the steel strand groove, an extrusion head on a steel strand is arranged in the extrusion head groove, and the upper end of the steel strand penetrates out of the guide cap from the top end of the steel strand groove; the diameter of the steel twisted wire groove is smaller than that of the extrusion head.
The lower part of the guide cap is of a cylindrical structure, and the upper part of the guide cap is of a cone structure.
The outer circular surface of the lower part of the guide cap is provided with an external thread, and the external thread is connected with an internal thread of the end anchor, so that the fixed connection of the steel strand and the end anchor at the tail end of the strand is realized.
The steel strand is provided with more than three groups, and is respectively assembled on end anchors of the strands distributed in a regular polygon through the guide caps, and the midpoint of the regular polygon is positioned on the central axis of the multi-strand cable.
The steel strands are provided with more than 3-4 groups, wherein 3 groups of steel strands correspond to end anchors of strands distributed in a regular triangle, and 4 groups of steel strands correspond to end anchors of strands distributed in a regular triangle.
The jack top sets up the locating pin, and this locating pin inserts in the observation hole in the middle of the back backup pad, and the jack bottom is installed on the counter-force board.
The working process of the utility model is as follows:
The jack is controlled to work through the oil pump, the counter-force plate and the rear supporting plate are simultaneously subjected to opposite thrust, the single-hole tool anchor and the tool clamping piece are stressed and form a counter-force support with the counter-force plate and the steel strand, when the lifting force of the jack overcomes the maximum friction force and dead weight of the cable strand and the rear supporting plate hole, the rear supporting plate moves reversely until the end face of the anchor backing plate is reached, and each cable strand locking nut is screwed up to complete one-time lifting. Considering the stroke factor of the jack, if one-time lifting cannot be carried out, the counter force plate, the single-hole tool anchor and the tool clamping piece can be moved upwards, and then the steps are repeated repeatedly until the installation position is designed.
The reverse jacking installation system is formed by designing the counter-force plate, the guide cap, the steel stranded wires with the extrusion heads, the jack and the like, so that jacking installation of the rear supporting plate can be effectively realized, and the reverse jacking installation system is fast, convenient, safe and reliable, and has good application prospect in the projects of the Zang Ke river bridge and the Huajiang canyon bridge in Guizhou.
Drawings
FIG. 1 is a schematic structural view of a multi-strand rear support plate lifting and mounting device of embodiment 1;
Fig. 2 is a schematic structural view of a guide cap of embodiment 1;
the numbers and designations in the figures are as follows:
1-jack, 2-steel strand wires, 3-extrusion head, 4-guide cap, 5-counter-force plate, 6-single hole tool anchor, 7-tool clamping piece, 8-strand, 9-strand lock nut, 10-back backup pad, 11-extrusion head groove, 12-steel strand wires groove, 13-locating pin, 14-external screw thread.
Detailed Description
The utility model is described in detail below with reference to the drawings and examples.
Example 1
As shown in fig. 1 and 2, the multi-strand rear support plate lifting installation device comprises a jack 1, a steel strand 2, an extrusion head 3, a guide cap 4, a counter-force plate 5, a single-hole tool anchor 6 and a tool clamping piece 7;
The steel strand wires 2 are provided with a plurality of strands, the upper end of the outer side wall of each steel strand wire 2 is provided with an extrusion head 3, a guide cap 4 is sleeved on the extrusion head 3, an extrusion head groove 11 and a steel strand wire groove 12 are formed in the guide cap 4, the extrusion head groove 11 is positioned below the steel strand wire groove 12, the extrusion head 3 on the steel strand wires 2 is arranged in the extrusion head groove 11, and the upper end of the steel strand wires 2 penetrates out of the guide cap 4 from the top end of the steel strand wire groove 12; the diameter of the steel strand groove 12 is smaller than that of the extrusion head 3; the lower part of the guide cap 4 is of a cylindrical structure, and the upper part of the guide cap is of a cone structure; an external thread 14 is arranged on the outer circular surface of the lower part of the guide cap 4, and the external thread 14 is connected with an internal thread of the end anchor, so that the upper end of the steel strand 2 is fixedly connected with the end anchor at the tail end of the cable strand 8;
The counter-force plate 5 is provided with wire holes corresponding to the strands of steel strands 2, and the lower ends of the strands of steel strands 2 respectively pass through the corresponding wire holes and are penetrated below the counter-force plate 5; the lower ends of the strands of steel strands 2 are respectively provided with a single-hole tool anchor 6, the diameter of the single-hole tool anchor 6 is larger than that of a wire hole, and a tool clamping piece 7 is arranged in the single-hole tool anchor 6;
the jack 1 is arranged between the counter-force plate 5 and the rear support plate 10.
The steel strands 2 are provided with 3 groups, and are respectively assembled on end anchors of the strands distributed in a regular triangle through guide caps 4; the midpoint of the regular triangle is located on the medial axis of the multi-strand cable.
The top of the jack 1 is provided with a locating pin 13, the locating pin 13 is inserted into an observation hole in the middle of the rear supporting plate 10, and the bottom of the jack 1 is arranged on the counter-force plate 5.
Claims (7)
1. The jacking and mounting device for the multi-strand rear supporting plate comprises a jack (1), a steel strand (2), an extrusion head (3), a guide cap (4), a counter-force plate (5), a single-hole tool anchor (6) and a tool clamping piece (7); the method is characterized in that:
The steel strands (2) are provided with a plurality of strands, the upper end of the outer side wall of each steel strand (2) is provided with an extrusion head (3), and the extrusion head (3) is sleeved with a guide cap (4); the upper ends of the strands of steel strands (2) are respectively assembled on an end anchor at the tail end of the strand (8) through a guide cap (4);
The counter-force plate (5) is provided with wire holes corresponding to the strands of steel strands (2), and the lower ends of the strands of steel strands (2) respectively penetrate out to the lower side of the counter-force plate (5) through the corresponding wire holes; the lower ends of the strands of steel strands (2) are respectively provided with a single-hole tool anchor (6), the diameter of the single-hole tool anchor (6) is larger than that of a wire hole, and a tool clamping piece (7) is arranged in the single-hole tool anchor (6);
The jack (1) is arranged between the counter-force plate (5) and the rear supporting plate (10).
2. The multi-strand back support plate jacking installation device of claim 1, wherein:
An extrusion head groove (11) and a steel strand groove (12) are formed in the guide cap (4), the extrusion head groove (11) is positioned below the steel strand groove (12), an extrusion head (3) on the steel strand (2) is arranged in the extrusion head groove (11), and the upper end of the steel strand (2) penetrates out of the guide cap (4) from the top end of the steel strand groove (12); the diameter of the steel twisted groove (12) is smaller than that of the extrusion head (3).
3. The multi-strand back support plate jacking installation device of claim 2, wherein:
the lower part of the guide cap (4) is of a cylindrical structure, and the upper part of the guide cap is of a cone structure.
4. A multi-strand rear support panel jacking installation as claimed in claim 3, wherein:
The outer circular surface of the lower part of the guide cap (4) is provided with an external thread (14), and the external thread (14) is connected with an internal thread of the end anchor, so that the fixed connection of the steel strand (2) and the end anchor at the tail end of the cable strand (8) is realized.
5. The multi-strand back support plate jacking installation device of claim 1, wherein: the steel strand wires (2) be equipped with more than three groups, assemble on the end ground tackle of the strand wires that is regular polygon distribution through guide cap (4) respectively, the mid point of regular polygon is located on the axis of many strands.
6. The multi-strand back support plate jacking installation device of claim 1, wherein: the steel strands (2) are provided with more than 3-4 groups, the 3 groups of steel strands (2) correspond to the end anchors of the strands distributed in the regular triangle, and the 4 groups of steel strands (2) correspond to the end anchors of the strands distributed in the regular triangle.
7. The multi-strand back support plate jacking installation device of claim 1, wherein: the top of the jack (1) is provided with a locating pin (13), the locating pin (13) is inserted into an observation hole in the middle of the rear supporting plate (10), and the bottom of the jack (1) is arranged on the counter-force plate (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322670736.7U CN220813469U (en) | 2023-10-07 | 2023-10-07 | Supporting plate jacking installation device behind multi-strand cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322670736.7U CN220813469U (en) | 2023-10-07 | 2023-10-07 | Supporting plate jacking installation device behind multi-strand cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220813469U true CN220813469U (en) | 2024-04-19 |
Family
ID=90673355
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322670736.7U Active CN220813469U (en) | 2023-10-07 | 2023-10-07 | Supporting plate jacking installation device behind multi-strand cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220813469U (en) |
-
2023
- 2023-10-07 CN CN202322670736.7U patent/CN220813469U/en active Active
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