CN213741917U

CN213741917U - Prestressed anchorage utensil is used in road bridge construction

Info

Publication number: CN213741917U
Application number: CN202022701877.7U
Authority: CN
Inventors: 王立志
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-11-19
Filing date: 2020-11-19
Publication date: 2021-07-20
Anticipated expiration: 2030-11-19

Abstract

The utility model discloses a prestressed anchorage utensil is used in road bridge construction, including anchor slab, stretch-draw anchor end, bellows, spiral muscle, clamping connector, prestressing tendons, the anchor slab is through stretch-draw anchor end and bellows fixed connection, clamping connector fixed connection is on the anchor slab, prestressing tendons activity in proper order runs through in anchor slab, stretch-draw anchor end and bellows, be equipped with clamping reinforcing bar hole on the clamping connector, and prestressing tendons's one end runs through in clamping reinforcing bar hole, is located to be equipped with movable chamber on the clamping connector of clamping reinforcing bar hole top. The utility model discloses a prestressed anchorage utensil is used in road bridge construction can make the constant head tank of positioning fixture block on to the prestressed reinforcement carry out firm location, can be fixed more firm with the downthehole clamping of clamping reinforcing bar of prestressed reinforcement on the clamping connector when stretch-draw like this to prevent that the phenomenon of prestressed reinforcement pine from taking off ground tackle takes place, thereby has ensured the normal stretch-draw use of prestressed anchorage utensil.

Description

Prestressed anchorage utensil is used in road bridge construction

Technical Field

The utility model relates to a road bridge construction ground tackle technical field especially relates to a road bridge construction is with prestressed anchorage utensil.

Background

The prestressed anchorage device is suitable for the anchorage device for prestressed concrete stretching in the engineering construction process. Generally, the method is often used in bridge construction, the positioning is carried out in advance, then concrete is poured and buried at two ends of the concrete, namely two ends of a corrugated pipe, and the end faces are arranged for the stabilizing effect of a jack during tensioning. The method is widely applied to project engineering such as highway bridges, railway bridges, urban overpasses, urban light rails, high-rise buildings, construction of pretensioned beam yards, external prestressing engineering, stay cables, suspension cables and the like.

With the development of science and technology, the prestressed anchorage device has not been developed continuously, and has various types. However, the prestressed anchorage used in the existing road and bridge construction is often not firm enough to clamp and fix the prestressed tendons during the tensioning process, so that the prestressed tendons are loosened and released from the anchors, and the normal tensioning use of the prestressed anchorage is further influenced. In order to solve the problems, the prestressed anchorage device for road and bridge construction is provided.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the shortcoming that exists among the prior art, and the prestressed anchorage utensil is used in road bridge construction that provides.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a prestressed anchorage device for road and bridge construction comprises an anchor plate, a tensioning anchor end, a corrugated pipe, a spiral rib, a clamping connector and a prestressed rib, wherein the anchor plate is fixedly connected with the corrugated pipe through the tensioning anchor end, the clamping connector is fixedly connected onto the anchor plate, the prestressed rib sequentially and movably penetrates through the anchor plate, the tensioning anchor end and the corrugated pipe, a clamping reinforcing steel bar hole is formed in the clamping connector, one end of the prestressed rib penetrates through the clamping reinforcing steel bar hole, a movable cavity is formed in the clamping connector above the clamping reinforcing steel bar hole, a positioning fixture block is slidably mounted in the movable cavity, a positioning groove is formed in the prestressed rib in the clamping reinforcing steel bar hole, and the bottom of the positioning fixture block is movably clamped into the positioning groove;

the top of location fixture block is equipped with the thread groove, and thread groove female connection has the hob, and the top of hob rotates and extends to the top and the fixedly connected with rotating head of clamping connector, and the both sides of the location fixture block that are located the activity intracavity are all fixed and are provided with the slider, and the lateral wall sliding connection in slider and activity chamber.

Preferably, the cover is equipped with fixed slide bar on the slider, and fixed slide bar's both ends respectively fixed connection on the top inner wall in activity chamber and bottom inner wall, fixedly connected with cover establishes the taut spring on the fixed slide bar between the top inner wall in slider and activity chamber.

Preferably, a sliding hole is formed in the sliding block, and the sliding block is sleeved on the fixed sliding rod through the sliding hole in a sliding mode.

Preferably, the screw rod positioned in the movable cavity is provided with an external thread, and the external thread on the screw rod is matched with the internal thread on the inner wall of the thread groove.

Preferably, the inner wall of the top of the movable cavity is provided with a mounting hole, a bearing is fixedly mounted in the mounting hole, and the screw rod is rotatably mounted on the bearing.

Preferably, the top of the rotating head is further provided with an inner hexagonal notch.

Compared with the prior art, the beneficial effects of the utility model are that:

in the utility model, through the rotation of the rotating head, the rotating head drives the screw rod to rotate relative to the thread groove on the positioning fixture block when rotating, and the positioning fixture block also performs sliding guide on the fixed slide bar through the slider, so that when the screw rod rotates, the positioning fixture block can be driven to perform downward thread transmission on the screw rod through the thread groove, and the bottom of the positioning fixture block can be moved downwards to be positioned in the positioning groove on the prestressed tendon; after the positioning fixture block is positioned in the positioning groove, the tensioning spring generates elastic tensioning force, so that the screw rod and the thread groove are connected in a threaded manner more tightly, and the situation of thread slipping is prevented;

finally, the utility model discloses a prestressed anchorage utensil is used in road bridge construction can make the constant head tank of positioning fixture block on to the prestressed reinforcement carry out firm location, can be fixed more firm with the downthehole clamping of clamping reinforcing bar of prestressed reinforcement on the clamping connector when stretch-draw like this to prevent that the prestressed reinforcement pine from taking off the phenomenon of ground tackle and taking place, thereby ensured the normal stretch-draw use of prestressed anchorage utensil.

Drawings

Fig. 1 is a schematic structural view of a prestressed anchorage for road and bridge construction provided by the utility model;

fig. 2 is an enlarged schematic structural view of a portion a in fig. 1 according to the present invention.

In the figure: the device comprises an anchor plate 1, a tensioning anchor end 2, a corrugated pipe 3, a spiral rib 4, a clamping connector 5, a clamping reinforcing steel bar hole 501, a movable cavity 502, a positioning fixture block 503, a rotating head 504, a spiral rod 505, a thread groove 506, a sliding block 507, a sliding hole 508, a fixed sliding rod 509, a tensioning spring 510, a bearing 511, a prestressed rib 6 and a positioning groove 601.

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.

Referring to fig. 1-2, a prestressed anchorage device for road and bridge construction, includes an anchor plate 1, a tension anchor end 2, a corrugated pipe 3, a spiral rib 4, a clamping connector 5, and a prestressed tendon 6, wherein the anchor plate 1 is fixedly connected with the corrugated pipe 3 through the tension anchor end 2, the clamping connector 5 is fixedly connected to the anchor plate 1, the prestressed tendon 6 sequentially and movably penetrates through the anchor plate 1, the tension anchor end 2, and the corrugated pipe 3, a clamping tendon hole 501 is formed in the clamping connector 5, one end of the prestressed tendon 6 penetrates through the clamping tendon hole 501, a movable cavity 502 is formed in the clamping connector 5 above the clamping tendon hole 501, a positioning fixture block 503 is slidably mounted in the movable cavity 502, a positioning groove 601 is formed in the prestressed tendon 6 in the clamping tendon hole 501, and the bottom of the positioning fixture block 503 is movably mounted in the positioning groove 601;

the top of the positioning fixture block 503 is provided with a threaded groove 506, the threaded groove 506 is connected with a threaded rod 505 in a threaded manner, the top end of the threaded rod 505 rotates to extend to the upper part of the clamping connector 5 and is fixedly connected with a rotating head 504, two sides of the positioning fixture block 503 positioned in the movable cavity 502 are both fixedly provided with sliding blocks 507, and the sliding blocks 507 are slidably connected with the side wall of the movable cavity 502. The utility model discloses a prestressed anchorage utensil is used in road bridge construction can make positioning fixture block 503 carry out the location that stabilizes to constant head tank 601 on the prestressed reinforcement 6, can be fixed more firm with the fixed clamping of prestressed reinforcement 6 in the clamping reinforcing bar hole 501 internal clamping on clamping connector 5 when the stretch-draw like this to prevent that the phenomenon of 6 pine of prestressed reinforcement take off the ground tackle takes place, thereby has ensured the normal stretch-draw use of prestressed anchorage utensil.

Further, the slider 507 is sleeved with a fixed sliding rod 509, two ends of the fixed sliding rod 509 are respectively and fixedly connected to the top inner wall and the bottom inner wall of the movable cavity 502, and a tension spring 510 is fixedly connected between the slider 507 and the top inner wall of the movable cavity 502 and sleeved on the fixed sliding rod 509.

Furthermore, a sliding hole 508 is arranged on the sliding block 507, and the sliding block 507 is slidably sleeved on the fixed sliding rod 509 through the sliding hole 508.

Further, an external thread is arranged on the screw rod 505 of the movable cavity 502, and the external thread on the screw rod 505 is matched with the internal thread on the inner wall of the thread groove 506.

Further, a mounting hole is formed in the inner wall of the top of the movable cavity 502, a bearing 511 is fixedly mounted in the mounting hole, and the screw rod 505 is rotatably mounted on the bearing 511.

Further, the top of the rotating head 504 is also provided with an inner hexagonal notch.

The utility model discloses a prestressed anchorage utensil is used in road bridge construction can be more firm with 6 clamping of prestressing tendons is fixed when stretch-draw to prevent the phenomenon that 6 pine of prestressing tendons take off the ground tackle, when at concrete clamping fixed time: insert the interior hexagonal notch at rotating head 504 top through the hexagonal instrument to rotating head 504 rotates, rotating head 504 drives screw rod 505 and the relative rotation of thread groove 506 on the fixture block 503 during rotation, because the fixture block 503 still passes through slider 507 and carries out the slip direction on fixed slide bar 509, when screw rod 505 rotated like this, can make the fixture block 503 fix a position through the thread groove 506 screw drive down on screw rod 505, and then can make the bottom of fixture block 503 fix a position in the constant head tank 601 on prestressing tendons 6 downwards. After the positioning fixture block 503 is positioned in the positioning groove 601, the tensioning spring 510 generates a tensioning force of elastic force, so that the screw rod 505 and the thread groove 506 are connected by threads more tightly, and the situation of thread slipping is prevented; finally, the prestressed tendon 6 can be clamped and fixed more stably in the clamping tendon hole 501 on the clamping connector 5 by positioning the positioning fixture block 503 and the positioning groove 601, so that the phenomenon that the prestressed tendon 6 loosens the anchorage device is prevented, and the normal tensioning use of the prestressed anchorage device is ensured.

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

1. The prestressed anchorage device for road and bridge construction comprises an anchor plate (1), a tension anchor end (2), a corrugated pipe (3), a spiral rib (4), a clamping connector (5) and a prestressed rib (6), and is characterized in that the anchor plate (1) is fixedly connected with the corrugated pipe (3) through the tension anchor end (2), the clamping connector (5) is fixedly connected to the anchor plate (1), the prestressed rib (6) sequentially and movably penetrates through the anchor plate (1), the tension anchor end (2) and the corrugated pipe (3), a clamping reinforcing steel bar hole (501) is formed in the clamping connector (5), one end of the prestressed rib (6) penetrates through the clamping reinforcing steel bar hole (501), a movable cavity (502) is formed in the clamping connector (5) above the clamping reinforcing steel bar hole (501), a positioning block (503) is slidably mounted in the movable cavity (502), and a positioning groove (601) is formed in the prestressed rib (6) in the clamping reinforcing steel bar hole (501), the bottom of the positioning fixture block (503) is movably clamped into the positioning groove (601);

the top of the positioning clamping block (503) is provided with a thread groove (506), the thread groove (506) is connected with a screw rod (505) in a threaded manner, the top end of the screw rod (505) rotates to extend to the upper part of the clamping connector (5) and is fixedly connected with a rotating head (504), sliding blocks (507) are fixedly arranged on two sides of the positioning clamping block (503) located in the movable cavity (502), and the sliding blocks (507) are connected with the side wall of the movable cavity (502) in a sliding manner.

2. The prestressed anchorage for road and bridge construction as claimed in claim 1, wherein a fixed sliding rod (509) is sleeved on the sliding block (507), two ends of the fixed sliding rod (509) are respectively and fixedly connected to the top inner wall and the bottom inner wall of the movable cavity (502), and a tension spring (510) sleeved on the fixed sliding rod (509) is fixedly connected between the sliding block (507) and the top inner wall of the movable cavity (502).

3. The prestressed anchorage for road and bridge construction as claimed in claim 2, wherein the sliding block (507) is provided with a sliding hole (508), and the sliding block (507) is slidably sleeved on the fixed sliding rod (509) through the sliding hole (508).

4. The prestressed anchorage for road and bridge construction as claimed in claim 1, wherein the screw rod (505) located in the active cavity (502) is provided with external threads, and the external threads on the screw rod (505) are adapted to the internal threads on the inner wall of the thread groove (506).

5. The prestressed anchorage for road and bridge construction as claimed in claim 1, wherein the top inner wall of said movable chamber (502) is provided with a mounting hole, a bearing (511) is fixedly mounted in the mounting hole, and the screw rod (505) is rotatably mounted on the bearing (511).

6. The prestressed anchorage for road and bridge construction as claimed in claim 1, wherein the top of said rotating head (504) is further provided with an inner hexagonal notch.