CN210738102U - Prestressed anchorage device for building construction - Google Patents
Prestressed anchorage device for building construction Download PDFInfo
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- CN210738102U CN210738102U CN201921358166.5U CN201921358166U CN210738102U CN 210738102 U CN210738102 U CN 210738102U CN 201921358166 U CN201921358166 U CN 201921358166U CN 210738102 U CN210738102 U CN 210738102U
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- clamping piece
- anchor
- anchor slab
- connecting block
- hole
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Abstract
The utility model discloses a prestressed anchorage utensil for construction, including bellows, spiral muscle, anchor slab and anchor slab, the bellows sets up in anchor slab one side, the anchor slab periphery is located to spiral muscle cover, the anchor slab sets up and keeps away from bellows one side in the anchor slab, the through-hole has been seted up in the anchor slab, inside first clamping piece and the second clamping piece of being equipped with of through-hole, be equipped with steel strand wires between first clamping piece and the second clamping piece, anchor slab one side is kept away from to first clamping piece and second clamping piece is equipped with the extraction device, the extraction device includes first connecting block, second connecting block and stay cord, first connecting block is fixed to be set up and keeps away from anchor slab one side in first clamping piece, the second connecting block is fixed to be set up and keeps away from anchor slab one side in the second clamping piece, the stay cord both ends respectively with first connecting block and second connecting block fixed connection. The utility model provides a prestressed anchorage utensil for construction is being convenient for separate clamping piece and anchor slab when people move back the anchor.
Description
Technical Field
The utility model relates to a construction technical field especially relates to a prestressed anchorage utensil for construction.
Background
The anchorage device is a permanent anchorage device used in prestressed concrete, and is an anchorage tool, also called a prestressed anchorage device, used in a post-tensioning structure or component for maintaining the tensile force of a prestressed tendon and transmitting the tensile force to the interior of the concrete.
The existing anchorage device mainly comprises a corrugated pipe, an anchor backing plate, an anchor plate and a clamping piece, wherein the existing bulletin number is CN207919369U, the prestressed anchorage device for concrete bridge construction is disclosed, the prestressed anchorage device comprises a hollow anchor backing plate and a plurality of prestressed steel strands, the right side of the anchor backing plate is communicated with the corrugated pipe, the left side of the anchor backing plate is provided with a working anchor ring, the working anchor ring is provided with a plurality of conical through holes communicated with the anchor backing plate, the diameter of the conical through holes far away from one side of the anchor backing plate is larger than that of the conical through holes near one side of the anchor backing plate, the conical through holes are internally provided with working clamping pieces used for clamping the prestressed steel strands, the working clamping pieces are internally provided with fixing holes for the prestressed steel strands to pass through, and the prestressed steel strands sequentially. After pre-burying is finished, a concrete bridge is poured, the prestressed steel strands penetrate through the working clamping pieces and are fixed through the working clamping pieces, and in the tensioning and anchoring process, the working clamping pieces gradually engage the steel strands along with the increase of stress to prevent the steel strands from sliding.
In the structure, the prestress steel strand is fixed through the matching of the working clamping piece and the conical through hole, so that the prestress steel strand is prevented from sliding. However, during use, the clip is gradually inserted into the tapered through hole under the action of stress. When special circumstances need to move back the anchor, when the condition such as steel strand wires fracture, often because clamping piece and steel strand wires interlock each other too closely, and the clamping piece most insert with the toper through-hole in, be difficult to with a clamping piece and anchor circle separation, this has also led to people and has brought the inconvenience when moving back the anchor.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a prestressed anchorage utensil for construction, people are being convenient for separate clamping piece and anchor slab when moving back the anchor.
The utility model discloses a technical scheme that prestressed anchorage utensil adopted for construction is:
the utility model provides a prestressed anchorage utensil for construction, includes bellows, spiral muscle, anchor slab and anchor slab, the bellows sets up in anchor slab one side, the anchor slab periphery is located to spiral muscle cover, the anchor slab sets up and keeps away from bellows one side in the anchor slab, set up the through-hole in the anchor slab, inside first clamping piece and the second clamping piece of being equipped with of through-hole, be equipped with steel strand wires between first clamping piece and the second clamping piece, first clamping piece and second clamping piece are kept away from anchor slab one side and are equipped with the extraction device, the extraction device includes first connecting block, second connecting block and stay cord, first connecting block is fixed to be set up in first clamping piece and is kept away from anchor slab one side, the second connecting block is fixed to be set up in the second clamping piece and is kept away from anchor slab one side, the stay cord both ends respectively with first connecting block and second connecting block fixed connection.
As a preferred scheme, the number of the through holes is multiple, the through holes are arranged in a circular array, the through holes are internally provided with a first clamping piece and a second clamping piece, and the number of the steel strands is the same as that of the through holes.
Preferably, the through hole is tapered, and the through hole gradually shrinks towards one side of the anchor backing plate along the axial direction.
As preferred scheme, first clamping piece and second clamping piece all reduce towards anchor backing plate one end along anchor slab one end, the surface of first clamping piece and second clamping piece all with the laminating of through-hole inner wall.
Preferably, the inner surfaces of the first clamping piece and the second clamping piece are provided with meshing teeth.
As a preferred scheme, the inside hollow structure that is of anchor backing plate, anchor backing plate one side near the anchor slab is equipped with the grout hole, grout hole and the inside intercommunication of anchor backing plate.
The utility model discloses a prestressed anchorage utensil for construction's beneficial effect is: the anchor plate is internally provided with a through hole, a first clamping piece and a second clamping piece are arranged in the through hole, a steel strand is arranged between the first clamping piece and the second clamping piece and sequentially penetrates through the anchor plate, the anchor backing plate and the corrugated pipe, so that in the tensioning and anchoring process, the first clamping piece and the second clamping piece gradually penetrate into the through hole along with the increase of stress, the steel strand is gradually meshed to prevent sliding, and the construction requirement of the concrete bridge is met. Keep away from anchor backing plate one side at first clamping piece and second clamping piece and be equipped with the extraction device, the extraction device includes first connecting block, second connecting block and stay cord, when people move back the anchor in needs, the stay cord is dragged to the accessible, respectively with first connecting block and second connecting rod fixed connection through the stay cord both ends, first connecting block and second connecting block respectively with first clamping piece and second clamping piece fixed connection, thereby pull out first clamping piece and second clamping piece from the through-hole, thereby move back the anchor operation to the ground tackle, utilize the stay cord to make people have the point of borrowing force, through dragging the stay cord with first clamping piece and second clamping piece in the through-hole towards keeping away from anchor backing plate one side and pull out, compare traditional clamping piece structure and make things convenient for people to separate clamping piece and anchor plate more, the condition of traditional clamping piece breaking take place in the anchor plate in needs prying out the in-process has also been avoided.
Drawings
FIG. 1 is a schematic structural view of the prestressed anchorage device for building construction of the present invention.
FIG. 2 is the drawing-out device of the prestressed anchorage device for construction of the utility model.
FIG. 3 is the drawing-out device and anchor plate installation cross-sectional view of the prestressed anchorage device for building construction.
Detailed Description
The invention will be further elucidated and described with reference to the following embodiments and drawings in which:
referring to fig. 1 and 2, a pre-stressed anchor for building construction includes a corrugated pipe 10, a spiral rib 20, an anchor backing plate 30 and an anchor plate 40, wherein the corrugated pipe 10 is disposed on one side of the anchor backing plate 30, the spiral rib 20 is sleeved on the periphery of the anchor backing plate 30, and the anchor plate 40 is disposed on one side of the anchor backing plate 30 away from the corrugated pipe 10.
And the inside hollow structure that is of anchor backing plate 30, anchor backing plate 30 is close to anchor slab 40 one side and is equipped with grout hole 31, and grout hole 31 and the inside intercommunication of anchor backing plate 30 are through grout hole 31 to the inside concrete that fills of anchor backing plate 30.
A through hole 41 is formed in the anchor plate 40, a first clamping piece 42 and a second clamping piece 43 are arranged in the through hole 41, and a steel strand 44 is arranged between the first clamping piece 42 and the second clamping piece 43.
The steel strand 44 sequentially passes through the anchor plate 40, the anchor backing plate 30 and the corrugated pipe 10, so that the first clamping piece 42 and the second clamping piece 43 gradually penetrate into the through hole 41 along with the increase of stress in the tensioning and anchoring process, and the steel strand 44 is gradually engaged to prevent sliding, thereby meeting the construction requirements of the concrete bridge.
One side of the first clamping piece 42 and the second clamping piece 43, which is far away from the anchor backing plate 30, is provided with a pulling-out device 50, the pulling-out device 50 comprises a first connecting block 51, a second connecting block 52 and a pulling rope 53, the first connecting block 51 is fixedly arranged on one side of the first clamping piece 42, which is far away from the anchor backing plate 30, the second connecting block 52 is fixedly arranged on one side of the second clamping piece 43, and two ends of the pulling rope 53 are respectively fixedly connected with the first connecting block 51 and the second connecting block 52.
When people move back the anchor in needs, the accessible draws drag rope 53, through stay rope 53 both ends respectively with first connecting block 51 and second connecting rod fixed connection, first connecting block 51 and second connecting block 52 respectively with first clamping piece 42 and second clamping piece 43 fixed connection, thereby pull out first clamping piece 42 and second clamping piece 43 from through-hole 41, thereby move back anchor operation to the ground tackle, utilize stay rope 53 to make people have and borrow the power point, draw out first clamping piece 42 and second clamping piece 43 towards keeping away from anchor backing plate 30 one side in through-hole 41 through drawing drag rope 53, compare traditional clamping piece structure and make things convenient for people to separate clamping piece and anchor plate 40 more, also avoided traditional clamping piece to take place to split the condition emergence in anchor plate 40 at needs pry-out in-process.
In the above scheme, the number of the through holes 41 is multiple, the through holes 41 are arranged in a circular array, the through holes 41 are internally provided with the first clamping pieces 42 and the second clamping pieces 43, and the number of the steel strands 44 is the same as that of the through holes 41. A plurality of through holes 41 can be arranged according to the requirement on prestress in the using process, and a plurality of steel strands 44 are arranged by utilizing the through holes 41, so that the requirements for construction in different environments are met.
Referring to fig. 3, the through hole 41 is tapered, the through hole 41 gradually shrinks toward one side of the anchor backing plate 30 along the axial direction, the first clamping piece 42 and the second clamping piece 43 both shrink toward one end of the anchor backing plate 30 along one end of the anchor plate 40, and the outer surfaces of the first clamping piece 42 and the second clamping piece 43 are both attached to the inner wall of the through hole 41. When the through hole 41 is tapered, the gap between the first clamping piece 42 and the second clamping piece 43 is gradually reduced in the through hole 41 during the tensioning process, so that the steel strand 44 between the first clamping piece 42 and the second clamping piece 43 is clamped and fixed.
And the inner surfaces of the first clamping piece 42 and the second clamping piece 43 are both provided with meshing teeth 421, and the meshing teeth 421 are used for increasing the friction force between the first clamping piece 42 and the steel strand 44 and between the second clamping piece 43 and the steel strand 44, so that the first clamping piece 42 and the steel strand 44 are better fixed and clamped.
The utility model provides a prestressed anchorage utensil for construction sets up the through-hole in the anchor slab, be equipped with first clamping piece and second clamping piece in the through-hole, be equipped with steel strand wires between first clamping piece and the second clamping piece, steel strand wires pass the anchor slab in proper order, anchor backing plate and bellows, thereby at stretch-draw anchor in-process, first clamping piece and second are along with the increase of stress, make first clamping piece and second clamping piece progressively deepen in the through-hole, and progressively engage steel strand wires and prevent sliding, thereby reach concrete bridge's construction requirement. Keep away from anchor backing plate one side at first clamping piece and second clamping piece and be equipped with the extraction device, the extraction device includes first connecting block, second connecting block and stay cord, when people move back the anchor in needs, the stay cord is dragged to the accessible, respectively with first connecting block and second connecting rod fixed connection through the stay cord both ends, first connecting block and second connecting block respectively with first clamping piece and second clamping piece fixed connection, thereby pull out first clamping piece and second clamping piece from the through-hole, thereby move back the anchor operation to the ground tackle, utilize the stay cord to make people have the point of borrowing force, through dragging the stay cord with first clamping piece and second clamping piece in the through-hole towards keeping away from anchor backing plate one side and pull out, compare traditional clamping piece structure and make things convenient for people to separate clamping piece and anchor plate more, the condition of traditional clamping piece breaking take place in the anchor plate in needs prying out the in-process has also been avoided.
It should be finally noted that the above embodiments are only intended to illustrate the technical solutions of the present invention, and not to limit the scope of the present invention, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solutions of the present invention can be modified or replaced with equivalents without departing from the spirit and scope of the technical solutions of the present invention.
Claims (6)
1. The utility model provides a prestressed anchorage utensil for construction, includes bellows, spiral muscle, anchor slab and anchor slab, the bellows sets up in anchor slab one side, the anchor slab periphery is located to spiral muscle cover, the anchor slab sets up and keeps away from bellows one side in the anchor slab, its characterized in that, set up the through-hole in the anchor slab, inside first clamping piece and the second clamping piece of being equipped with of through-hole, be equipped with steel strand wires between first clamping piece and the second clamping piece, first clamping piece and second clamping piece are kept away from anchor slab one side and are equipped with the extraction device, the extraction device includes first connecting block, second connecting block and stay cord, first connecting block is fixed to be set up in first clamping piece and is kept away from anchor slab one side, the second connecting block is fixed to be set up in the second clamping piece and is kept away from anchor slab one side, the stay cord both ends respectively with first connecting block and second connecting block fixed.
2. The prestressed anchorage device for building construction according to claim 1, wherein there are a plurality of said through holes, said through holes are arranged in a circular array, each of said through holes has a first clamping piece and a second clamping piece, and the number of said steel strands is the same as the number of said through holes.
3. The prestressed anchorage for construction as claimed in claim 2, wherein said through hole is tapered, and said through hole is tapered toward the anchor pad side in the axial direction.
4. The prestressed anchorage device for building construction according to claim 3, wherein said first clip and said second clip both narrow toward one end of said anchor backing plate along one end of said anchor plate, and outer surfaces of said first clip and said second clip both abut against an inner wall of said through hole.
5. The prestressed anchorage for building construction as claimed in claim 4, wherein said first and second jaws are provided with engaging teeth on their inner surfaces.
6. The prestressed anchorage device for building construction according to claim 1, wherein the anchor backing plate is hollow, and a grouting hole is formed in a side of the anchor backing plate close to the anchor plate, and the grouting hole is communicated with the inside of the anchor backing plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921358166.5U CN210738102U (en) | 2019-08-21 | 2019-08-21 | Prestressed anchorage device for building construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921358166.5U CN210738102U (en) | 2019-08-21 | 2019-08-21 | Prestressed anchorage device for building construction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210738102U true CN210738102U (en) | 2020-06-12 |
Family
ID=70981679
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921358166.5U Active CN210738102U (en) | 2019-08-21 | 2019-08-21 | Prestressed anchorage device for building construction |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210738102U (en) |
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2019
- 2019-08-21 CN CN201921358166.5U patent/CN210738102U/en active Active
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