CN213740593U - Low-retraction anchorage device applied to vertical tensioning of bridge - Google Patents
Low-retraction anchorage device applied to vertical tensioning of bridge Download PDFInfo
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- CN213740593U CN213740593U CN202022435558.6U CN202022435558U CN213740593U CN 213740593 U CN213740593 U CN 213740593U CN 202022435558 U CN202022435558 U CN 202022435558U CN 213740593 U CN213740593 U CN 213740593U
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- anchor cup
- backing plate
- limiting sliding
- bridge
- anchor
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Abstract
The utility model relates to a bridge technical field, and a be applied to low back ground tackle that contracts of vertical stretch-draw of bridge is disclosed, including the concrete, the backing plate, the anchor cup, the bellows, spiral muscle and steel strand wires, the anchor cup is located the top of backing plate, steel strand wires are and pass the bellows in proper order, the inside of backing plate and anchor cup is and set up through the clamping piece joint, the upper surface of backing plate and the left and right sides that is located the anchor cup are all fixed and are equipped with the bracing piece, the upper end of two bracing pieces is the fixed backup pad jointly, first screw hole has been seted up to the surperficial center department of backup pad, and the internal thread of first screw hole is provided with the threaded rod, the lower extreme of threaded rod is rotated with the top of anchor cup and is connected, be equipped with spacing slide mechanism between the left and right sides and the bracing piece of anchor cup, the outside of anchor cup is equipped with movable supporting mechanism. The utility model discloses be convenient for accomplish the action of secondary stretch-draw, avoid adopting the implementation of jack, the cost is reduced.
Description
Technical Field
The utility model relates to a bridge technical field especially relates to a be applied to low ground tackle that contracts of vertical stretch-draw of bridge.
Background
At present, in actual engineering design, the common prestress loss of medium and short prestressed tendons in construction is large, and the utilization rate of steel is low. Particularly, the retraction loss of the vertical prestressed anchorage device of the bridge is up to 20-40%, and the problem of overlarge loss of the prestressed anchorage device is effectively solved by successfully researching and developing the prestressed anchorage device for the second time in recent years. However, the structural ruler of the secondary tension prestressed anchorage is relatively large, and the size of a reserved tension notch when the secondary tension prestressed anchorage is applied to high-strength concrete is also large, so that the secondary tension prestressed anchorage is limited to be popularized and used in vertical prestressed anchorages with requirements on structural size.
The patent number is CN201217778Y, which discloses a tension prestressed anchorage device. The device mainly solves the technical problems of high retraction loss and the like of the existing bridge vertical prestressed anchorage device. The key points of the technical scheme are as follows: the anchor cup is composed of a backing plate, a supporting nut, an anchor cup and a clamping piece, wherein the anchor cup is designed into an upper step type cylindrical structure and a lower step type cylindrical structure, the upper step type cylindrical structure and the lower step type cylindrical structure are connected into a whole, threads are arranged on the peripheries of the upper cylinder and the lower cylinder, the outer diameter of the upper cylinder is larger than that of the lower cylinder, the threads arranged on the periphery of the lower cylinder are matched with the internal threads of the supporting nut, 1-20 axial taper holes are formed in the anchor cup, the anchor cup is installed on the upper portion of the backing plate, and the outer diameter of the anchor cup is larger than the inner diameter of the center of the backing plate. After the second tensioning, the connection between the gaps is undertaken by the back nut.
In the scheme, the jack is required to finish the action of secondary tensioning, so that the cost is increased, and the construction and installation are complex. Therefore, the utility model provides a be applied to low back ground tackle that contracts of vertical stretch-draw of bridge.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the function that needs to adopt the jack to accomplish secondary stretch-draw among the prior art, not only incremental cost, the comparatively complicated problem of installation is got up in the construction moreover, and the low back ground tackle that contracts of being applied to the vertical stretch-draw of bridge that proposes.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the utility model provides a be applied to low back ground tackle that contracts of vertical stretch-draw of bridge, includes concrete, backing plate, anchor cup, bellows, spiral muscle and steel strand wires, the anchor cup is located the top of backing plate, the steel strand wires are and pass in proper order the inside of bellows, backing plate and anchor cup sets up through the clamping piece joint, the upper surface of backing plate just is located the left and right sides of anchor cup is all fixed and is equipped with the bracing piece, two the upper end of bracing piece is fixed jointly and is equipped with the backup pad, the surperficial center department of backup pad has seted up first screw hole, and the internal thread of first screw hole is provided with the threaded rod, the lower extreme of threaded rod with the top of anchor cup is rotated and is connected, the left and right sides of anchor cup with be equipped with spacing slide mechanism between the bracing piece, the outside of anchor cup is equipped with movable supporting mechanism.
Preferably, the limiting sliding mechanism comprises a limiting sliding block, the limiting sliding block is fixedly arranged on the side wall of the anchor cup, a limiting sliding hole is formed in the upper side of the limiting sliding block, and the limiting sliding block is connected with the rod wall of the supporting rod in a sliding mode through the limiting sliding hole.
Preferably, the movable supporting mechanism comprises a supporting sleeve, the supporting sleeve is located outside the anchor cup, the lower end of the supporting sleeve is abutted to the upper surface of the base plate, two second threaded holes are symmetrically formed in the wall of the supporting sleeve, fixing bolts are arranged in the two second threaded holes in a threaded mode, and the supporting sleeve is fixedly connected with the anchor cup through the fixing bolts.
Preferably, the upper end of the threaded rod extends to the upper part of the supporting plate and is fixedly provided with a rocking handle.
Preferably, a rolling bearing is embedded in the center of the top of the anchor cup, and the lower end of the threaded rod is rotatably connected with the top of the anchor cup through the rolling bearing.
Compared with the prior art, the utility model provides a be applied to low ground tackle that contracts of vertical stretch-draw of bridge possesses following beneficial effect:
1. this be applied to low back of contracting ground tackle of vertical stretch-draw of bridge, bracing piece, backup pad, threaded rod and the spacing slider through being equipped with are convenient for accomplish the action of secondary stretch-draw, have avoided the implementation of having adopted the jack.
2. This be applied to low back ground tackle that contracts of vertical stretch-draw of bridge through the support sleeve and the fixing bolt who is equipped with, can provide the effect of a support for the clearance between anchor cup and the backing plate to increase the steadiness.
The part that does not relate to in the device all is the same with prior art or can adopt prior art to realize, the utility model discloses be convenient for accomplish the action of secondary stretch-draw, avoid the implementation that has adopted the jack, the cost is reduced.
Drawings
Fig. 1 is a schematic structural view of a low-retraction anchor applied to vertical tensioning of a bridge according to the present invention;
fig. 2 is a schematic top view of the support sleeve of fig. 1.
In the figure: concrete 1, backing plates 2, anchor cups 3, corrugated pipes 4, spiral ribs 5, steel stranded wires 6, supporting rods 7, supporting plates 8, threaded rods 9, clamping pieces 10, limiting slide blocks 11, supporting sleeves 12, fixing bolts 13 and rocking handles 14.
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.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being 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.
Referring to fig. 1-2, a low back-retraction anchorage device applied to vertical tensioning of a bridge comprises concrete 1, a backing plate 2, an anchor cup 3, a corrugated pipe 4, a spiral rib 5 and a steel strand 6, wherein the anchor cup 3 is positioned above the backing plate 2, the steel strand 6 sequentially penetrates through the corrugated pipe 4, the insides of the backing plate 2 and the anchor cup 3 are clamped and arranged through clamping pieces 10, supporting rods 7 are fixedly arranged on the upper surface of the backing plate 2 and the left and right sides of the anchor cup 3, supporting plates 8 are fixedly arranged at the upper ends of the two supporting rods 7 together, a first threaded hole is formed in the center of the surface of each supporting plate 8, a threaded rod 9 is arranged on the internal thread of each threaded hole, the lower end of the threaded rod 9 is rotatably connected with the top of the anchor cup 3, a limiting sliding mechanism is arranged between the left and right sides of the anchor cup 3 and the supporting rods 7, and a movable supporting mechanism is arranged on the outer side of the anchor cup 3.
The limiting sliding mechanism comprises a limiting sliding block 11, the limiting sliding block 11 is fixedly arranged on the side wall of the anchor cup 3, a limiting sliding hole is formed in the upper side of the limiting sliding block 11, and the limiting sliding block 11 is connected with the rod wall of the supporting rod 7 in a sliding mode through the limiting sliding hole.
The movable supporting mechanism comprises a supporting sleeve 12, the supporting sleeve 12 is located outside the anchor cup 3, the lower end of the supporting sleeve 12 is abutted to the upper surface of the base plate 2, two second threaded holes are symmetrically formed in the pipe wall of the supporting sleeve 12, fixing bolts 13 are arranged in the two second threaded holes in a threaded mode, and the supporting sleeve 12 is tightly connected with the anchor cup 3 through the fixing bolts 13.
The upper end of the threaded rod 9 extends to the upper part of the supporting plate 8 and is fixedly provided with a rocking handle 14, a rolling bearing is embedded in the center of the top of the anchor cup 3, and the lower end of the threaded rod 9 is rotatably connected with the top of the anchor cup 3 through the rolling bearing.
The utility model discloses in, during the use, pass bellows 4 with steel strand wires 6 in proper order, the inside of backing plate and anchor cup 3, rethread clamping piece 10 presss from both sides the tight inside of fixing at anchor cup 3 with steel strand wires 6, accomplish the first stretch-draw construction this moment, then hand rotation rocking handle 14, make threaded rod 9 rotatory and rebound, threaded rod 9 drives anchor cup 3 and rebound when rotatory, thereby make anchor cup 3 pulling steel strand wires 6, the stretch-draw construction of the second time has been accomplished, because there is the clearance between anchor cup 3 and the backing plate 2 this moment, support sleeve 12 can compensate its clearance, rethread fixing bolt 13 and anchor cup 3 between fixed, and then can provide the effect of a support and increase the steadiness for the clearance between anchor cup 3 and the backing plate 2.
The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.
Claims (5)
1. The utility model provides a be applied to vertical stretch-draw of bridge low back ground tackle that contracts, includes concrete (1), backing plate (2), anchor cup (3), bellows (4), spiral muscle (5) and steel strand wires (6), its characterized in that, anchor cup (3) are located the top of backing plate (2), steel strand wires (6) are and pass in proper order bellows (4), backing plate (2) and the inside of anchor cup (3) are inside and set up through clamping piece (10) joint, the upper surface of backing plate (2) just is located the left and right sides of anchor cup (3) all is fixed and is equipped with bracing piece (7), two the upper end of bracing piece (7) is fixed jointly is equipped with backup pad (8), the surperficial center department of backup pad (8) has seted up first screw hole, and the internal thread of first screw hole is provided with threaded rod (9), the lower extreme of threaded rod (9) with the top of anchor cup (3) is rotated and is connected, a limiting sliding mechanism is arranged between the left side and the right side of the anchor cup (3) and the support rod (7), and a movable support mechanism is arranged on the outer side of the anchor cup (3).
2. The low-retraction anchorage device applied to vertical tensioning of a bridge is characterized in that the limiting sliding mechanism comprises a limiting sliding block (11), the limiting sliding block (11) is fixedly arranged on the side wall of the anchor cup (3), a limiting sliding hole is formed in the upper side of the limiting sliding block (11), and the limiting sliding block (11) is in sliding connection with the rod wall of the supporting rod (7) through the limiting sliding hole.
3. The low-retraction anchor device applied to vertical tensioning of a bridge is characterized in that the movable supporting mechanism comprises a supporting sleeve (12), the supporting sleeve (12) is located outside the anchor cup (3), the lower end of the supporting sleeve (12) is abutted to the upper surface of the backing plate (2), two second threaded holes are symmetrically formed in the wall of the supporting sleeve (12), a fixing bolt (13) is arranged in each of the two second threaded holes in a threaded manner, and the supporting sleeve (12) is fixedly connected with the anchor cup (3) through the fixing bolt (13).
4. A low retraction anchorage for vertical tensioning of bridges according to claim 1, characterized in that the upper end of the threaded rod (9) extends above the support plate (8) and is fixedly provided with a rocking handle (14).
5. The low-retraction anchor device applied to vertical tensioning of a bridge is characterized in that a rolling bearing is embedded in the center of the top of the anchor cup (3), and the lower end of the threaded rod (9) is rotatably connected with the top of the anchor cup (3) through the rolling bearing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022435558.6U CN213740593U (en) | 2020-10-28 | 2020-10-28 | Low-retraction anchorage device applied to vertical tensioning of bridge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022435558.6U CN213740593U (en) | 2020-10-28 | 2020-10-28 | Low-retraction anchorage device applied to vertical tensioning of bridge |
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| CN213740593U true CN213740593U (en) | 2021-07-20 |
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| CN202022435558.6U Active CN213740593U (en) | 2020-10-28 | 2020-10-28 | Low-retraction anchorage device applied to vertical tensioning of bridge |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113897863A (en) * | 2021-09-06 | 2022-01-07 | 龚鹏鹏 | Combined prestressed anchorage device |
-
2020
- 2020-10-28 CN CN202022435558.6U patent/CN213740593U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113897863A (en) * | 2021-09-06 | 2022-01-07 | 龚鹏鹏 | Combined prestressed anchorage device |
| CN113897863B (en) * | 2021-09-06 | 2024-04-30 | 柳州市东桥预应力科技有限公司 | Use method of combined prestress anchorage device |
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