CN110777675A

CN110777675A - Bridge prestress tension fixing device

Info

Publication number: CN110777675A
Application number: CN201911230334.7A
Authority: CN
Inventors: 陈柯; 孙伟; 迟爽; 刘云友
Original assignee: HEILONGJIANG HIGHWAY PROSPECTING DESIGN INSTITUTE
Current assignee: HEILONGJIANG HIGHWAY PROSPECTING DESIGN INSTITUTE
Priority date: 2019-12-05
Filing date: 2019-12-05
Publication date: 2020-02-11

Abstract

The invention discloses a bridge prestress tension fixing device which comprises an upper layer fixing device, a lower layer fixing ring, a first-stage fixing arm, a second-stage fixing arm, a limiting groove A, a fastening screw A, a limiting groove B and a fastening screw B, wherein the upper layer fixing device is a cylinder, the lower layer fixing ring is perpendicular to the position under the center of the upper layer fixing device, four first-stage fixing arms are fixedly connected to the side surface of the upper layer fixing device at equal intervals, the four second-stage fixing arms are fixedly connected to the bottom surface of the first-stage fixing arm and form a triangular shape together with the first-stage fixing arms, and four limiting grooves A are formed in the bottoms of first-stage inclined planes of the four fixing arms respectively.

Description

Bridge prestress tension fixing device

Technical Field

The invention relates to a bridge prestress tensioning and fixing device.

Background

Prestressing force stretch-draw adds the pulling force in the component in advance for it bears compressive stress to be exerted prestressing force stretch-draw component, and then makes it produce certain deformation, deals with the load that structure itself received, load, wind load, snow load, earthquake load effect etc. including component self weight.

The prestressed reinforcing steel bars of the bridge are commonly used in the bridge construction process, and a fixing device is needed for reinforcement work due to the fact that the number of the prestressed reinforcing steel bars is large and the length of the prestressed reinforcing steel bars is long in the process of using finish rolling reinforcing steel bars.

Disclosure of Invention

The invention aims to provide a bridge prestress tensioning and fixing device to solve the technical problem.

In order to achieve the purpose, the invention adopts the following technical scheme:

a bridge prestress tension fixing device comprises an upper fixing device, a lower fixing ring, a first-stage fixing arm, a second-stage fixing arm, limiting grooves A, fastening screws A, limiting grooves B and fastening screws B, wherein the upper fixing device is a cylinder, the lower fixing ring is perpendicular to the position under the center of the upper fixing device, four first-stage fixing arms are fixedly connected with the side surface of the upper fixing device in an equidistance manner, four second-stage fixing arms are fixedly connected with the bottom surface of the first-stage fixing arm and form a triangular shape together with the first-stage fixing arms, four limiting grooves A are respectively arranged at the bottoms of the positive inclined surfaces of the four first-stage fixing arms, the four fastening screws A are respectively bolted at the center positions of the four limiting grooves A, the four limiting grooves B are equidistantly arranged over the four limiting grooves A, and the four fastening screws B are bolted at the centers of the, and passes through the primary fixed arm and the secondary fixed arm.

On the basis of the technical scheme, the upper fixing device comprises a fixing ring, a limiting panel, limiting through holes and an upper buckle, the fixing ring is annularly connected around the limiting panel and is multiple, the limiting through holes are formed in the surface of the limiting panel, and the upper buckle is fixedly connected to the front center of the fixing ring.

On the basis of the technical scheme, the lower-layer fixing ring comprises an annular fixing band and lower-layer buckles, two lower-layer buckles are fixedly connected to the center of the front face of the annular fixing band and are arranged in the vertical direction at equal intervals.

Compared with the prior art, the invention has the following advantages: the invention achieves stable reinforcement effect through two layers of reinforcement devices, and the fixed arms around the reinforcement devices also provide firm supporting force for the novel structure.

Drawings

Fig. 1 is a schematic view of the external structure of the present invention.

Fig. 2 is a schematic structural view of the limiting device of the present invention.

FIG. 3 is a schematic view of a base structure according to the present invention.

In the figure: 1. the upper layer fixing device comprises an upper layer fixing device, 2 a lower layer fixing ring, 3 a first-stage fixing arm, 4 a second-stage fixing arm, 5 a limiting groove A, 6 a fastening screw A, 7 a limiting groove B, 8 a fastening screw B, 9 a fixing ring, 10 a limiting panel, 11 a limiting through hole, 12 an upper layer buckle, 13 an annular fixing band and 14 a lower layer buckle.

Detailed Description

The invention is explained in further detail below with reference to the figures and the specific embodiments.

As shown in fig. 1-3, a bridge prestress tension fixing device comprises an upper fixing device 1, a lower fixing ring 2, a first-stage fixing arm 3, a second-stage fixing arm 4, a limiting groove a5, a fastening screw a6, a limiting groove B7 and a fastening screw B8, wherein the upper fixing device 1 is a cylinder, the lower fixing ring 2 is perpendicular to the center of the upper fixing device 1, four first-stage fixing arms 3 are fixedly connected to the side surface of the upper fixing device 1 at equal intervals, four second-stage fixing arms 4 are fixedly connected to the bottom surface of the first-stage fixing arm 3 and form a triangular shape with the first-stage fixing arm, four limiting grooves a5 are respectively arranged at the bottom of the positive inclined surface of the four first-stage fixing arms 3, four fastening screws a6 are respectively bolted at the center of four limiting grooves a5, four limiting grooves B7 are equidistantly arranged right above the four limiting grooves a5, the four fastening screws B8 are bolted at the centers of the four limiting grooves B7 and penetrate through the primary fixing arm 3 and the secondary fixing arm 4.

Upper fixing device 1 is including solid fixed ring 9, spacing panel 10, spacing perforation 11, upper buckle 12, spacing panel 10 all around the ring joint have solid fixed ring 9, a plurality of spacing perforation 11 is seted up on spacing panel 10 surface, upper buckle 12 fixed connection is in solid fixed ring 9 front center department.

The lower-layer fixing ring 2 comprises an annular fixing band 13 and a lower-layer buckle 14, the two lower-layer buckles 14 are fixedly connected to the center of the front face of the annular fixing band 13, and the two lower-layer buckles 14 are arranged in the vertical direction at equal intervals.

The working principle of the invention is as follows: when the steel bar fixing device is used, a plurality of steel bars penetrate through the lower fixing ring, the annular fixing band is tightened at the same time, the lower buckle is buckled, the steel bars continue to penetrate through the limiting through holes in the upper fixing device, the fixing ring is tightened, the upper buckle is buckled, and after the steel bars pass through the limiting through holes in the upper fixing device, the fastening screws on the fixing arms are tightened to complete the reinforcement.

The foregoing is a preferred embodiment of the present invention, and it will be apparent to those skilled in the art that variations, modifications, substitutions and alterations can be made in the embodiment without departing from the principles and spirit of the invention.

Claims

1. The utility model provides a bridge prestressing force stretch-draw fixing device, includes upper fixing device (1), the solid fixed ring of lower floor (2), one-level fixed arm (3), second grade fixed arm (4), spacing groove A (5), fastening screw A (6), spacing groove B (7), fastening screw B (8), its characterized in that: the upper layer fixing device (1) is a cylinder, the lower layer fixing ring (2) is vertical to the position right below the center of the upper layer fixing device (1), four primary fixed arms (3) are fixedly connected to the side surface of the upper layer fixing device (1) at equal intervals, four secondary fixed arms (4) are fixedly connected to the bottom surface of the primary fixed arms (3), and constitute the triangle shape with the one-level fixed arm, four open respectively one-level fixed arm (3) positive inclined plane bottom has four spacing groove A (5), four fastening screw A (6) bolted connection respectively puts at four spacing groove A (5) central points, four spacing groove B (7) equidistance is seted up directly over four spacing groove A (5), four fastening screw B (8) bolted connection is in four spacing groove B (7) center department to pass one-level fixed arm (3) and second grade fixed arm (4).

2. The pre-stressed bridge tensioning and fixing device of claim 1, wherein: upper fixing device (1) is including solid fixed ring (9), spacing panel (10), spacing perforation (11), upper buckle (12), spacing panel (10) all around the ring joint have solid fixed ring (9), a plurality of spacing perforation (11) are seted up on spacing panel (10) surface, upper buckle (12) fixed connection is located at solid fixed ring (9) front center.

3. The pre-stressed bridge tensioning and fixing device of claim 1, wherein: the lower-layer fixing ring (2) comprises an annular fixing belt (13) and lower-layer buckles (14), wherein the annular fixing belt (13) is fixedly connected with two lower-layer buckles (14) at the center in the front face, and the lower-layer buckles (14) are arranged in the same distance in the vertical direction.