CN113981819A

CN113981819A - Prestressed anchorage utensil is used in public road bridge roof beam construction

Info

Publication number: CN113981819A
Application number: CN202111308622.7A
Authority: CN
Inventors: 谭庆华; 罗泽顺; 罗芝平
Original assignee: Hengyang City Xindeli Traffic Material Co ltd
Current assignee: Hengyang City Xindeli Traffic Material Co ltd
Priority date: 2021-11-05
Filing date: 2021-11-05
Publication date: 2022-01-28

Abstract

The invention discloses a pre-stressed anchor for highway bridge construction, which comprises an anchor shell and a base plate, wherein one end of the anchor shell is fixedly connected with an anchor lower backing plate, the outer wall of one side of the anchor lower backing plate is connected with an anchor plate, one side of the anchor plate is provided with extrusion anchors distributed at equal intervals, one end of each extrusion anchor is provided with a pressing plate, the pressing plate is contacted with one end of each extrusion anchor, one end of the anchor shell is communicated with a corrugated pipe, and the inner sides of the anchor shell and the corrugated pipe are provided with steel strands distributed at equal intervals. According to the invention, the protective shell, the first extrusion rod and the second extrusion rod are arranged, and the extrusion disc, the first clamping plate, the second clamping plate and the magnet are matched to achieve a further fixing effect on the steel strand, so that after the steel strand is stretched by using the jack and redundant steel strands are cut off, the stability of the steel strand is improved by matching with the action of the anchor ring, the steel strand is more practical and is suitable for wide popularization and use.

Description

Prestressed anchorage utensil is used in public road bridge roof beam construction

Technical Field

The invention belongs to the technical field of prestressed anchorage devices, and particularly relates to a prestressed anchorage device for highway bridge construction.

Background

The prestressed anchorage device is an anchorage device for prestressed concrete tensioning in the course of engineering construction, and is usually used in the construction of highway bridge, and is characterized by that it is pre-mounted, positioned, poured with concrete, buried in two ends of concrete, i.e. two ends of corrugated pipe, and is an end face for stabilizing jack when it is tensioned.

The CN211547348U discloses a prestressed anchorage device for highway bridge construction, which comprises an anchor plate and an anchor backing plate, wherein the top and the bottom of the right side of the anchor plate are both fixedly connected with a fixed rod, and the inner wall of the fixed rod is fixedly connected with a fixed spring. Can be simple and convenient install the anchor slab through dead lever and fixed slot, through fixed spring, push pedal and fixing clip can be with the inside of dead lever card at the fixed slot, further fix dead lever and anchor slab, can be further fix the anchor slab through clamp plate and clamping screw, can push down the fixing clip through the push rod, thereby make the dead lever lose fixedly, further can take off the anchor slab, simple and convenient installs and dismantles the operation to the anchor slab, the device has improved the holistic application range of ground tackle through the anchor slab that can change, the waste of the material that the anchor slab brought has been reduced simultaneously.

However, the inventor finds that the technical scheme still has at least the following defects: among above-mentioned device and prior art, after using the jack to stretch the steel strand wires and cut off unnecessary steel strand wires, lack the further firm effect to the steel strand wires, when only using the anchor ring to fix a position the steel strand wires, after long-term the use, there is the not hard up risk of steel strand wires.

The present invention has been made in view of this situation.

Disclosure of Invention

The technical problem to be solved by the invention is to overcome the defects of the prior art, and provide a prestressed anchorage device for highway bridge construction, in order to solve the technical problem, the basic concept of the technical scheme adopted by the invention is as follows:

a prestressed anchorage device for highway bridge construction comprises an anchorage device shell and a base plate, wherein one end of the anchorage device shell is fixedly connected with an anchorage lower backing plate, the outer wall of one side of the anchorage lower backing plate is connected with an anchor plate, extrusion anchors distributed at equal intervals are arranged on one side of the anchor plate, a pressing plate is arranged at one end of each extrusion anchor, the pressing plate is contacted with one end of each extrusion anchor, one end of the anchorage device shell is communicated with a corrugated pipe, and steel strands distributed at equal intervals are arranged on the anchorage device shell and the inner side of the corrugated pipe;

bellows both sides fixedly connected with symmetry sets up the stiffener of L type structure, two the same protective housing of stiffener one end fixedly connected with, bellows one end and steel strand wires all are located the protective housing inboard, the opening has been seted up to protective housing one side, and the dead lever that opening inner wall fixedly connected with symmetry set up, two the relative one end of dead lever is fixed respectively on bellows both sides outer wall.

Furthermore, the outer wall of the top of the base plate is fixedly connected with a first support column and a second support column, and the top ends of the first support column and the second support column are respectively fixed on the outer wall of the anchor device shell and the outer wall of the bottom of the corrugated pipe.

Further, the outer wall of one side of the anchor backing plate and the outer wall of one side of the pressing plate are provided with symmetrically arranged threaded holes, and the inner walls of the two threaded holes are connected with positioning screws in a threaded mode.

Furthermore, the outer side of the anchor device shell is sleeved with a threaded rib, and one end of the threaded rib is fixed on the outer wall on the right side of the anchor lower backing plate.

Furthermore, the through holes are formed in the outer walls of the two sides of the protective shell, the inner walls of the two through holes are respectively connected with a first extrusion rod and a second extrusion rod in a sliding mode, the opposite ends, located on the inner side of the protective shell, of the first extrusion rod and the second extrusion rod are respectively fixedly connected with a first clamping plate and a second clamping plate, and the opposite sides of the bottom ends of the first clamping plate and the second clamping plate are respectively in contact with the two sides of the steel strand.

Furthermore, the first extrusion rod and the second extrusion rod are fixedly connected with extrusion discs at one ends of the protection shell outside.

Furthermore, the first clamping plate and the second clamping plate are fixedly connected with symmetrically arranged magnets at opposite ends of the inner side of the protective shell.

After the technical scheme is adopted, compared with the prior art, the invention has the following beneficial effects.

According to the invention, the protection shell, the first extrusion rod and the second extrusion rod are arranged, and the extrusion disc, the first clamping plate, the second clamping plate and the magnet are matched to achieve a further fixing effect on the steel strand, so that after the steel strand is stretched by using the jack and the redundant steel strand is cut off, the stability of the steel strand is improved by matching with the action of the anchor ring.

The anchor device shell and the corrugated pipe have good supporting effect when put into use through the base plate, the first support column and the second support column.

The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without limiting the invention to its proper form. It is obvious that the drawings in the following description are only some embodiments, and that for a person skilled in the art, other drawings can be derived from them without inventive effort. In the drawings:

FIG. 1 is a schematic front view of the present invention;

FIG. 2 is a schematic cross-sectional view of a platen according to the present invention;

FIG. 3 is a schematic cross-sectional view of the protective housing of the present invention;

fig. 4 is a front view of the bellows of the present invention.

In the figure: 1-an anchor housing; 2-anchoring a lower backing plate; 3-a substrate; 4-a first strut; 5-a second strut; 6-anchor plate; 7-pressing a plate; 8-extruding an anchor; 9-positioning the screw rod; 10-a thread rib; 11-a bellows; 12-steel strand wires; 13-a protective housing; 14-a reinforcing rod; 15-fixing the rod; 16-a first squeeze bar; 17-a first clamping plate; 18-a second squeeze bar; 19-a second clamping plate; 20-an extrusion disc; 21-magnet.

It should be noted that the drawings and the description are not intended to limit the scope of the inventive concept in any way, but to illustrate it by a person skilled in the art with reference to specific embodiments.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and the following embodiments are used for illustrating the present invention and are not intended to limit the scope of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", "outer", etc., 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, but 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 thus, should not be construed as limiting the present invention.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example one

As shown in fig. 1 to 4, the pre-stressed anchor for highway bridge construction in this embodiment includes an anchor housing 1 and a base plate 3, one end of the anchor housing 1 is fixedly connected with an anchor backing plate 2, an anchor plate 6 is connected to an outer wall of one side of the anchor backing plate 2, extrusion anchors 8 are arranged on one side of the anchor plate 6 at equal intervals, a pressing plate 7 is arranged at one end of each extrusion anchor 8, the pressing plate 7 is in contact with one end of each extrusion anchor 8, one end of the anchor housing 1 is communicated with a corrugated pipe 11, and steel strands 12 are arranged on inner sides of the anchor housing 1 and the corrugated pipe 11 at equal intervals;

11 both sides fixedly connected with symmetry of bellows sets up stiffener 14 of L type structure, and the same protective housing 13 of 14 one end fixedly connected with of two stiffeners, 11 one end of bellows and steel strand wires 12 all are located protective housing 13 inboard, and the opening has been seted up to protective housing 13 one side, and the dead lever 15 that opening inner wall fixedly connected with symmetry set up, and the relative one end of two dead levers 15 is fixed respectively on 11 both sides outer walls of bellows.

3 top outer walls fixedly connected with of base plate 4 and second pillar 5, and fix respectively on

ground tackle shell

1 and 11 bottom outer walls of bellows on

first pillar

4 and 5 tops of second pillar, make ground tackle shell 1 and bellows 11 have better supporting effect when coming into operation, the screw hole that the symmetry set up is all seted up to anchor backing plate 2 one side outer wall and clamp plate 7 one side outer wall, and two equal spiro unions of screw hole inner wall have positioning screw 9, can reach the fixed effect to anchor

backing plate

2, 1 outside cover of ground tackle shell is equipped with screw thread muscle 10, and the one end of screw thread muscle 10 is fixed on the outer wall on anchor backing plate 2 right side.

The outer walls of two sides of the protective shell 13 are provided with through holes, the inner walls of the two through holes are respectively connected with a first extrusion rod 16 and a second extrusion rod 18 in a sliding manner, the opposite ends of the first extrusion rod 16 and the second extrusion rod 18, which are positioned at the inner side of the protective shell 13, are respectively fixedly connected with a first clamping plate 17 and a second clamping plate 19, the opposite sides of the bottom ends of the first clamping plate 17 and the second clamping plate 19 are respectively contacted with two sides of the steel strand 12, the ends of the first extrusion rod 16 and the second extrusion rod 18, which are positioned at the outer side of the protective shell 13, are respectively fixedly connected with an extrusion disc 20, the first clamping plate 17 and the second clamping plate 19 are pushed towards opposite directions under the action of the extrusion disc 20 until the first clamping plate 17 and the second clamping plate 19 are contacted with the steel strand 12, so that after the steel strand 12 is stretched by using a jack and the redundant steel strand 12 is cut off, the action of an anchor ring is matched, and the stabilizing effect on the steel strand 12 is improved, the opposite ends of the first clamping plate 17 and the second clamping plate 19, which are positioned on the inner side of the protective shell 13, are fixedly connected with symmetrically arranged magnets 21, and the fixing effect is achieved through the characteristic that the magnets 21 attract oppositely.

During the use, through clamp plate 7 and the positioning screw 9 that set up, can reach the fixed effect to anchor backing plate 2, through the base plate 3 that sets up, first pillar 4 and second pillar 5, make anchor tackle shell 1 and bellows 11 have better supporting effect when putting into use, through the protective housing 13 that sets up, first squeeze stem 16 and second squeeze stem 18, the effect of cooperation stripper disk 20, promote first clamp plate 17 and second clamp plate 19 to opposite direction, until first clamp plate 17 and second clamp plate 19 contact with steel strand wires 12, reach fixed effect through the characteristic of magnet 21 opposite sex attraction this moment, thereby after using the jack to stretch steel strand wires 12 and cut off unnecessary steel strand wires 12, the effect of cooperation anchor ring, the firm effect to steel strand wires 12 has been promoted, thereby stability has obtained better promotion.

Although the present invention has been described with reference to a preferred embodiment, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. A pre-stressed anchor for highway bridge construction comprises an anchor shell (1) and a base plate (3), and is characterized in that one end of the anchor shell (1) is fixedly connected with an anchor backing plate (2), the outer wall of one side of the anchor backing plate (2) is connected with an anchor plate (6), one side of the anchor plate (6) is provided with extrusion anchors (8) distributed at equal intervals, one end of each extrusion anchor (8) is provided with a pressing plate (7), the pressing plate (7) is in contact with one end of each extrusion anchor (8), one end of the anchor shell (1) is communicated with a corrugated pipe (11), and steel strands (12) distributed at equal intervals are arranged on the inner sides of the anchor shell (1) and the corrugated pipe (11);

bellows (11) both sides fixedly connected with symmetry sets up stiffener (14), two of L type structure the same protective housing (13) of stiffener (14) one end fixedly connected with, bellows (11) one end and steel strand wires (12) all are located protective housing (13) inboard, the opening has been seted up to protective housing (13) one side, and dead lever (15), two that opening inner wall fixedly connected with symmetry set up dead lever (15) the relative one end of dead lever (15) is fixed respectively on bellows (11) both sides outer wall.

2. The prestressed anchorage device for road and bridge construction according to claim 1, wherein the first pillar (4) and the second pillar (5) are fixedly connected to the outer wall of the top of the base plate (3), and the top ends of the first pillar (4) and the second pillar (5) are respectively fixed to the anchorage housing (1) and the outer wall of the bottom of the corrugated pipe (11).

3. The pre-stressed anchor for road and bridge construction as claimed in claim 1, wherein the outer wall of one side of the anchor backing plate (2) and the outer wall of one side of the pressing plate (7) are both provided with symmetrically arranged threaded holes, and the inner walls of the two threaded holes are both in threaded connection with positioning screws (9).

4. The pre-stressed anchorage device for highway bridge construction according to claim 1, wherein a threaded rib (10) is sleeved outside the anchorage housing (1), and one end of the threaded rib (10) is fixed on the outer wall of the right side of the anchor lower backing plate (2).

5. The pre-stressed anchor for road and bridge construction as claimed in claim 1, wherein the outer walls of the two sides of the protective casing (13) are provided with through holes, the inner walls of the two through holes are respectively connected with a first extrusion rod (16) and a second extrusion rod (18) in a sliding manner, the opposite ends of the first extrusion rod (16) and the second extrusion rod (18) located at the inner side of the protective casing (13) are respectively fixedly connected with a first clamping plate (17) and a second clamping plate (19), and the opposite sides of the bottom ends of the first clamping plate (17) and the second clamping plate (19) are respectively contacted with the two sides of the steel strand (12).

6. The pre-stressed anchor for road and bridge construction according to claim 5, wherein the ends of the first extrusion rod (16) and the second extrusion rod (18) which are positioned outside the protective shell (13) are fixedly connected with extrusion discs (20).

7. The pre-stressed anchor for road and bridge construction according to claim 6, wherein the first clamping plate (17) and the second clamping plate (19) are fixedly connected with symmetrically arranged magnets (21) at opposite ends of the inner side of the protective shell (13).