Anchorage device for concrete prestress tensioning

Abstract

The utility model relates to the technical field of civil engineering, and discloses an anchorage device for concrete prestress tension, the surface of an anchorage device base plate is movably sleeved with a spiral bar main body, one side of the anchorage device base plate is movably connected with a corrugated pipe main body, and the side, away from the corrugated pipe main body, of the anchorage device base plate is internally and movably sleeved with a connecting extrusion core; a mounting baffle is movably connected to the side, away from the corrugated pipe body, of the anchorage device base plate, first clamping pieces which are arranged in order are movably connected into the side, away from the anchorage device base plate, of the mounting baffle in a sleeved mode, and auxiliary fasteners which are arranged in order are movably connected to the side, adjacent to the mounting baffle, of the anchorage device base plate. An auxiliary mounting block is movably connected to the position, close to the corrugated pipe body, in the anchorage device base plate in a sleeved mode, second clamping pieces arranged in order are movably connected to the interior of the auxiliary mounting block in a sleeved mode, an auxiliary fastening piece comprises a first clamping barrel, the single-cluster ribs can be more stably fixed in the anchorage device, and therefore the overall supporting effect of the single-cluster ribs is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of civil engineering, and more specifically relates to an anchor for concrete prestress tensioning. Background Art

[0002] An anchor is an anchoring tool used to maintain the tension of prestressed tendons and transfer it to the interior of concrete in post-tensioned structures or components. It is also called a prestressed anchor. A prestressed anchor is an essential device in bridge construction. It is used to fix prestressed steel bundles. The prestressed anchor can withstand the huge tension of the prestressed steel bundles and transfer this force to the concrete structure.

[0003] At present, when the existing anchors connect prestressed tendons, a single wedge is mostly used for fixation. Therefore, in actual use, the installation of prestressed tendons may become loose. The loosening of prestressed tendons will lead to a reduction in the overall strength. In addition, when the existing anchors install a single cluster of tendons, the fixing property is poor, and the single cluster of tendons cannot be effectively fixed more stably, thus reducing the supporting effect of the single cluster of tendons. Summary of the Utility Model

[0004] In order to overcome the above-mentioned defects of the prior art, the utility model provides an anchor for concrete prestress tensioning to solve the problems existing in the above background art.

[0005] The utility model provides the following technical solution: An anchor for concrete prestress tensioning, including an anchor backing plate, characterized in that: a spiral rib main body is movably sleeved on the surface of the anchor backing plate; a corrugated pipe main body is movably connected to one side of the anchor backing plate; a connecting extrusion core is movably sleeved inside the side of the anchor backing plate away from the corrugated pipe main body; an installation baffle is movably connected to the position on the side of the anchor backing plate away from the corrugated pipe main body; a row of neatly arranged first wedges is movably sleeved inside the side of the installation baffle away from the anchor backing plate; a row of neatly arranged auxiliary fasteners is movably connected to the adjacent side position of the anchor backing plate and the installation baffle; an auxiliary installation block is movably sleeved inside the anchor backing plate and close to the position of the corrugated pipe main body; a row of neatly arranged second wedges is movably sleeved inside the auxiliary installation block; the auxiliary fastener includes a first cartridge, and a second cartridge is movably connected to the side of the first cartridge close to the anchor backing plate; a row of neatly arranged reinforcement bolts is movably sleeved on the surface of the anchor backing plate close to the position of the corrugated pipe main body. By including a first cartridge in the auxiliary fastener, it is beneficial to more firmly fix a single cluster of tendons inside the anchor, thereby increasing the overall supporting effect of the single cluster of tendons.

[0006] Furthermore, the installation baffle includes fastening columns. An installation plate is fixedly sleeved on the surface of the fastening columns. Circular through holes are provided at positions near the four corners of the surface of the installation plate. A docking cylindrical groove is provided on the surface of the fastening column near the anchor plate. Neatly arranged single-cluster rib holes are provided inside the fastening column at the position where the docking cylindrical groove is opened. A grouting hole is provided at the center position of the fastening column. Through the installation plate, the circular through holes and the docking cylindrical groove, it is beneficial to connect and install with the anchor plate and the connecting extrusion core.

[0007] Furthermore, installation threads are provided on the surface of the connecting extrusion core near the installation baffle. Neatly arranged holes are provided inside the connecting extrusion core. Through the connecting extrusion core, it is beneficial to squeeze the second clamping piece into the auxiliary installation block to reinforce the prestressed tendon.

[0008] Furthermore, the anchor plate includes a conical shell. A cylindrical collar is fixedly sleeved on the surface of the conical shell near the bellows main body. Installation holes are provided on the surface of the cylindrical collar at positions where the reinforcing bolts are movably sleeved. A docking plate is fixedly connected to the surface of the conical shell near the installation baffle. Docking holes are provided at the four corners of the docking plate. A circular inner cavity is provided inside the conical shell at the position where the connecting extrusion core is movably sleeved. Through the reinforcing bolts, it is beneficial to assist in reinforcing the prestressed tendon and prevent loosening from affecting the overall strength.

[0009] Furthermore, fastening holes are provided at positions on the auxiliary installation block where the second clamping piece is movably sleeved. Through the auxiliary installation block, it is beneficial to fix the prestressed tendon inside the anchor plate.

[0010] The technical effects and advantages of the present utility model:

[0011] 1. By providing reinforcing bolts, auxiliary installation blocks, second clamping pieces, and first clamping pieces, the present utility model is beneficial for fixing the prestressed tendon through the first clamping piece during the connection of the prestressed tendon, and further reinforcing it through the second clamping piece and the reinforcing bolts inside the auxiliary installation block, so that the prestressed tendon is fixed more firmly and stably, thereby avoiding the situation that the overall strength is reduced due to the loosening of the prestressed tendon during actual use.

[0012] 2. By providing auxiliary installation blocks, second clamping pieces, auxiliary fasteners, and connecting extrusion cores, the present utility model is beneficial for initially fixing the single-cluster rib through the auxiliary installation block and the second clamping piece when connecting and fixing the single-cluster rib, and squeezing the auxiliary fastener when the connecting extrusion core is connected to the installation baffle, so that the single-cluster rib is more firmly connected inside the anchor, and at the same time, the overall support effect of the single-cluster rib is increased. Description of the Drawings

[0013] Figure 1This is the overall structural schematic diagram of the present utility model.

[0014] Figure 2 This is the cross-sectional schematic diagram of the overall structure of the present utility model.

[0015] Figure 3 This is the cross-sectional schematic diagram of the installation baffle structure of the present utility model.

[0016] Figure 4 This is the schematic diagram of the connection extrusion core structure of the present utility model.

[0017] Figure 5 This is the schematic diagram of the anchor plate structure of the present utility model.

[0018] Figure 6 This is the schematic diagram of the auxiliary installation block structure of the present utility model.

[0019] The reference numerals are: 1, anchor plate; 101, conical shell; 102, cylindrical collar; 103, installation hole; 104, docking plate; 105, docking hole; 106, circular inner cavity; 2, spiral rib main body; 3, corrugated pipe main body; 4, connection extrusion core; 401, installation thread; 5, installation baffle; 501, fastening column; 502, installation plate; 503, circular through hole; 504, docking cylindrical groove; 505, single cluster rib hole; 506, grouting hole; 6, first clamp; 7, auxiliary fastener; 701, first cartridge; 702, second cartridge; 8, auxiliary installation block; 801, fastening hole; 9, second clamp; 10, reinforcement bolt. Specific embodiments

[0020] Next, the technical solutions in the present utility model will be clearly and completely described in conjunction with the drawings in the present utility model. In addition, the forms of each structure described in the following embodiments are only examples. An anchor for concrete prestress tension involved in the present utility model is not limited to the structures described in the following embodiments. All other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present utility model.

[0021] Refer to Figure 1 and Figure 6As shown in the figure, the utility model provides an anchor for concrete prestress tensioning, including an anchor plate 1. It is characterized in that: a spiral rib main body 2 is movably sleeved on the surface of the anchor plate 1; one side of the anchor plate 1 is movably connected with a corrugated pipe main body 3; a connecting extrusion core 4 is movably sleeved inside the side of the anchor plate 1 far away from the corrugated pipe main body 3; an installation baffle 5 is movably connected at the position on the side of the anchor plate 1 far away from the corrugated pipe main body 3; a neatly arranged first set of clamping pieces 6 is movably sleeved inside the side of the installation baffle 5 far away from the anchor plate 1; a neatly arranged auxiliary fastener 7 is movably connected at the adjacent side position of the anchor plate 1 and the installation baffle 5; an auxiliary installation block 8 is movably sleeved inside the anchor plate 1 and close to the corrugated pipe main body 3; a neatly arranged second set of clamping pieces 9 is movably sleeved inside the auxiliary installation block 8; the auxiliary fastener 7 includes a first barrel 701, and a second barrel 702 is movably connected to the side of the first barrel 701 close to the anchor plate 1; a neatly arranged reinforcing bolt 10 is movably sleeved on the surface of the anchor plate 1 close to the corrugated pipe main body 3. By the auxiliary fastener 7 including the first barrel 701, it is beneficial to more firmly fix a single cluster of steel bars inside the anchor, thereby increasing the overall support effect of the single cluster of steel bars;

[0022] Referring to Figure 3 As shown in the figure, the installation baffle 5 includes a fastening column 501, an installation plate 502 is fixedly sleeved on the surface of the fastening column 501, circular through holes 503 are respectively opened at positions close to the four corners on the surface of the installation plate 502, a butt joint cylindrical groove 504 is opened on the surface position of the fastening column 501 close to the anchor plate 1, neatly arranged single cluster of steel bar holes 505 are opened inside the fastening column 501 at the position where the butt joint cylindrical groove 504 is opened, and a grouting hole 506 is opened at the central position of the fastening column 501. Through the installation plate 502, the circular through holes 503 and the butt joint cylindrical groove 504, it is beneficial to connect and install with the anchor plate 1 and the connecting extrusion core 4.

[0023] Referring to Figure 4 As shown in the figure, an installation thread 401 is opened on the surface position of the connecting extrusion core 4 close to the installation baffle 5, and neatly arranged holes are opened inside the connecting extrusion core 4. By the connecting extrusion core 4, it is beneficial to extrude the second set of clamping pieces 9 into the auxiliary installation block 8 to reinforce the prestressed steel bars.

[0024] Referring to Figure 5As shown, the anchor plate 1 includes a conical shell 101. A cylindrical collar 102 is fixedly sleeved on the surface of the conical shell 101 and near one side of the corrugated pipe body 3. Installation holes 103 are provided on the surface of the cylindrical collar 102 at the positions where the reinforcing bolts 10 are movably sleeved. A butt plate 104 is fixedly connected to the surface of the conical shell 101 near the installation baffle 5. Butt holes 105 are provided at the four corners of the butt plate 104. A circular inner cavity 106 is provided inside the conical shell 101 at the position where the connecting extrusion core 4 is movably sleeved. Through the reinforcing bolts 10, it is beneficial to assist in reinforcing the prestressed tendons and prevent loosening from affecting the overall strength.

[0025] Refer to Figure 6 As shown, fastening holes 801 are provided at the positions where the auxiliary installation blocks 8 are movably sleeved with the second clamping pieces 9. Through the auxiliary installation blocks 8, it is beneficial to fix the prestressed tendons inside the anchor plate 1.

[0026] Working principle of the utility model: Firstly, during use, the prestressed tendon is first inserted through the corrugated pipe body 3 and enters the circular inner cavity 106 opened in the anchor plate 1. Then, the single cluster tendons in the prestressed tendon are respectively inserted into the fastening holes 801 opened in the auxiliary installation block 8. Then, the single cluster tendons are inserted into the second clamping piece 9. The single cluster tendons enter the holes opened in the connecting extrusion core 4 through the second clamping piece 9. Then, the single cluster tendons passing through the connecting extrusion core 4 are inserted into the auxiliary fastener 7 and then enter the single cluster tendon hole 505 and the first clamping piece 6. Then, the auxiliary installation block 8, the second clamping piece 9 and the connecting extrusion core 4 are sleeved into the circular inner cavity 106. Then, the prestressed tendon is tensioned. After the tensioning is completed, the prestress of the prestressed tendon drives the first clamping piece 6 and the second clamping piece 9 to enter the single cluster tendon hole 505 and the fastening hole 801 respectively. Then, the butt joint cylindrical groove 504 opened in the fastening column 501 approaches the auxiliary fastener 7 and the anchor plate 1, so that the fastening column 501 squeezes the first cartridge 701 and the second cartridge 702. At this time, the first cartridge 701 and the second cartridge 702 enter the single cluster tendon hole 505 and the holes opened in the connecting extrusion core 4 respectively. Then, the fastening column 501 is rotated so that the butt joint cylindrical groove 504 connects and fixes the fastening column 501 and the connecting extrusion core 4 through the installation thread 401 opened in the connecting extrusion core 4. At this time, the rotation of the fastening column 501 causes the auxiliary fastener 7 to be squeezed and completely enter the single cluster tendon hole 505 and the holes in the connecting extrusion core 4 to fix the single cluster tendons in the single cluster tendon hole 505 and the holes in the connecting extrusion core 4. Then, bolts are used to pass through the circular through hole 503 opened in the installation plate 502 and are connected to the butt joint holes 105 opened in the butt joint plate 104. At this time, as the installation baffle 5 approaches the anchor plate 1, the installation baffle 5 pushes the connecting extrusion core 4 to squeeze the auxiliary installation block 8 in the circular inner cavity 106, so that the second clamping piece 9 completely enters the fastening hole 801, ensuring that the auxiliary installation block 8 fixes the prestressed tendon through the second clamping piece 9. Then, the reinforcing bolt 10 is rotated into the installation hole 103 opened in the cylindrical sleeve ring 102, so that the reinforcing bolt 10 fixes the prestressed tendon at the position close to the corrugated pipe body 3 in the circular inner cavity 106, preventing the prestressed tendon from loosening during actual use. Then, concrete slurry can be injected through the grouting hole 506 opened at the center position of the fastening column 501.

[0027] Finally: The above are only the preferred embodiments of the utility model and are not used to limit the utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. An anchor for prestressed tensioning of concrete, comprising an anchor backing plate (1), characterized in that: The surface of the anchor plate (1) is movably sleeved with the main body of the spiral reinforcement (2). One side of the anchor plate (1) is movably connected with the main body of the corrugated pipe (3). The inner part of the side of the anchor plate (1) far from the main body of the corrugated pipe (3) is movably sleeved with the connecting extrusion core (4). The side of the anchor plate (1) far from the main body of the corrugated pipe (3) is movably connected with the installation baffle (5). The inner part of the side of the installation baffle (5) far from the anchor plate (1) is movably sleeved with neatly arranged first clamping pieces (6). The adjacent side position of the anchor plate (1) and the installation baffle (5) is movably connected with neatly arranged auxiliary fasteners (7). The inner part of the anchor plate (1) and near the position of the main body of the corrugated pipe (3) is movably sleeved with the auxiliary installation block (8). The inner part of the auxiliary installation block (8) is movably sleeved with neatly arranged second clamping pieces (9). The auxiliary fastener (7) includes a first cartridge case (701). The side of the first cartridge case (701) close to the anchor plate (1) is movably connected with a second cartridge case (702). The surface of the anchor plate (1) near the position of the main body of the corrugated pipe (3) is movably sleeved with neatly arranged reinforcing bolts (10).

2. An anchor for concrete prestressed tensioning according to claim 1, characterized in that: The installation baffle (5) includes a fastening column (501). The surface of the fastening column (501) is fixedly sleeved with an installation plate (502). Circular through holes (503) are opened at positions near the four corners of the surface of the installation plate (502). A butt cylindrical groove (504) is opened on the surface of the side of the fastening column (501) close to the anchor plate (1). Neatly arranged single-cluster rib holes (505) are opened at the position of the fastening column (501) inside the opened butt cylindrical groove (504). A grouting hole (506) is opened at the center position of the fastening column (501).

3. The anchor for prestressed tension of concrete according to claim 1, characterized in that: An installation thread (401) is opened on the surface of the side of the connecting extrusion core (4) close to the installation baffle (5). Neatly arranged holes are opened inside the connecting extrusion core (4).

4. An anchor for concrete prestressed tensioning according to claim 1, characterized in that: The anchor plate (1) includes a conical shell (101). A cylindrical collar (102) is fixedly sleeved on the surface of the conical shell (101) and near the position of the main body of the corrugated pipe (3). Installation holes (103) are opened at positions on the surface of the cylindrical collar (102) where the reinforcing bolts (10) are movably sleeved. A butt plate (104) is fixedly connected to the surface of the conical shell (101) near the position of the installation baffle (5). Butt holes (105) are opened at the four corners of the butt plate (104). A circular inner cavity (106) is opened inside the conical shell (101) at the position where the connecting extrusion core (4) is movably sleeved.

5. An anchor for concrete prestress tensioning according to claim 1, characterized in that: Fastening holes (801) are opened at positions where the auxiliary installation block (8) is movably sleeved with the second clamping pieces (9).

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