CN210758423U

CN210758423U - Steel strand stress limiting device

Info

Publication number: CN210758423U
Application number: CN201921368309.0U
Authority: CN
Inventors: 李东飞; 白林; 王军; 任剑秋; 沈轲; 田军峰; 李林辉; 万义文; 刘俊
Original assignee: China Gezhouba Group No 3 Engineering Co Ltd
Current assignee: China Gezhouba Group No 3 Engineering Co Ltd
Priority date: 2019-08-21
Filing date: 2019-08-21
Publication date: 2020-06-16
Anticipated expiration: 2029-08-21

Abstract

The utility model discloses a steel strand stress limiting device, which comprises a placing rack and an anti-disorder device; the rack is a frame structure formed by fixing a plurality of steel bars, the rack is hollow, an opening is formed in the top of the rack, the length and height of the rack are larger than the diameter of the steel strand coil, and the width of the rack is larger than the axial length of the steel strand coil; the disorder preventing device is close to the placing frame and comprises a steel bar and a steel pipe, the inner diameter of the steel pipe is larger than the diameter of a steel strand, and one end of the steel bar is radially fixed on the circumferential surface of the steel pipe. Can place the inside of going into the rack with steel strand wires dish from the top, it is just as to only need hoist the rack, convenient operation to hoist and mount in-process place frame bottom and side and carry on spacingly to steel strand wires dish, improve the stability of hoist and mount, prevent disorderly device and can carry on spacingly to steel strand wires through with the steel pipe, can make the stress release control of steel strand wires in controllable range, prevented that steel strand wires from disorderly popping out and hindering the people, reduced the operation risk, provide safety guarantee for the operation workman.

Description

Steel strand stress limiting device

Technical Field

The utility model belongs to steel strand wires field of use relates to a steel strand wires stress stop device.

Background

In the construction process of the precast box girder, the box girder has large stress, prestress is applied when the stress of the box girder needs to be reduced and offset to improve the bearing capacity, the prestress is the stress applied in advance, the defect that concrete does not resist tensile is overcome, the effect is to reduce the weight, increase the span and improve the bearing capacity, and therefore the steel strand has wide application in the construction process of the prestressed box girder. In the construction process of the prestressed box girder, the number of the steel strands used by each prestressed box girder is small, and the steel strands used by each prestressed box girder move along with the movement of the pedestal, so that the movement of the whole bundle of steel strands needs to be moved by means of gantry crane equipment every time, the steel strands are of a circular wire coil structure, the steel strands are provided with a limiting device for limiting the overall stress when leaving a factory, but the wire outlet is started from the inside, the wire outlet part has certain stress and cannot be limited, and certain danger exists in the hoisting and storage processes except the difficulty in security protection. How to improve the convenience of hoisting the prestressed steel strands and the safety of stress release of the steel strands in the construction process of the prestressed box girder become more obvious problems in the construction process of the prestressed box girder.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome above-mentioned prior art's shortcoming, provide a steel strand wires stress stop device, convenient hoist and mount reduces the hoist and mount risk, reduces the danger of the stress release of steel strand wires.

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

a steel strand stress limiting device comprises a placing frame and an anti-disorder device;

the rack is a frame structure formed by fixing a plurality of steel bars, the rack is hollow, an opening is formed in the top of the rack, the length and height of the rack are larger than the diameter of the steel strand coil, and the width of the rack is larger than the axial length of the steel strand coil;

the disorder preventing device is close to the placing frame and comprises a steel bar and a steel pipe, the inner diameter of the steel pipe is larger than the diameter of a steel strand, and one end of the steel bar is radially fixed on the circumferential surface of the steel pipe.

Preferably, the bottom surface of the placing rack is connected with four universal wheels.

Furthermore, the universal wheel is a brakeable universal wheel.

Preferably, the rectangle that four billets are constituteed is at the bottom of the top of rack, connects four angles and the sideline of two rectangles through many first billets, is provided with the second billet that is used for the support in the rectangle of bottom.

Furthermore, the second billet is two at least, sets up for rack bottom rectangle central line symmetry.

Preferably, a wire outlet hole is fixed at the center of the front face of the placing frame, and the wire outlet hole is of a circular ring structure.

Preferably, on the disorder preventing device, a steel plate is fixed at the free end of the steel bar, and the steel bar is vertically fixed with the surface of the steel plate.

Compared with the prior art, the utility model discloses following beneficial effect has:

the steel strand coil can be placed into the rack from the top by the aid of the rack with the frame structure, the rack is lifted only by the aid of the rack, operation is convenient, the steel strand coil is limited by the bottom and the side faces of the rack in the lifting process, lifting stability is improved, the steel strand can be limited by the disorder prevention device through the steel pipe, and stress release of the steel strand can be controlled within a controllable range only by fixing steel bars, so that disorder ejection of the steel strand is prevented from hurting people, operation risks are reduced, and safety guarantee is provided for operators.

Furthermore, the universal wheels are arranged at the bottom of the placing frame, so that manual movement is avoided, hoisting movement of gantry crane equipment is avoided, hoisting risks in hoisting engineering are eliminated, investment of hoisting equipment resources is reduced, and use conflict of the hoisting equipment is avoided.

Furthermore, the universal wheels capable of being braked are used, so that braking can be performed after the placing rack is moved to the working position, the placing rack is prevented from being moved, and potential safety hazards are reduced.

Furthermore, the front face of the placing frame is provided with wire outlet holes, so that the condition of messy coiling and kinking can be prevented when the steel strand wires are led out.

Further, the free end of the steel bar on the disorder prevention device is fixed on the surface of the steel plate, and the steel plate is used as a fixing part of the disorder prevention device, so that the stability of the disorder prevention device is improved.

Drawings

Fig. 1 is a schematic structural view of the stress limiting device of the present invention;

FIG. 2 is a schematic structural view of the turbulence preventing device of the present invention;

FIG. 3 is a schematic structural view of the universal wheel with braking function of the present invention;

fig. 4 is a diagram of the usage state of the device of the present invention.

Wherein: 1-placing a rack; 2-wire outlet holes; 3-a steel pipe; 4-reinforcing steel bars; 5-a steel plate; 6-a brakeable universal wheel; 7-steel strand disk.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings:

referring to fig. 1, the stress limiting device of the invention comprises a placing frame 1, a wire outlet hole 2, a brakeable universal wheel 6 and an anti-disorder device.

Rack 1 adopts the frame construction that many billet welded each other and constitute, and the preferred billet of this embodiment adopts 10# channel-section steel, and rack 1 is long and the diameter that is greater than steel strand wires dish 7, and the width is greater than the axial length of steel strand wires dish 7. The specific structure of the placing frame 1 is a rectangle with four channel steel at the top and the bottom, and four corners and side lines of the two rectangles are connected through a plurality of channel steel; the rectangle at the bottom is provided with two channel steels parallel to the short sides of the rectangle, and the two channel steels are symmetrically arranged relative to the central line of the rectangle and are used for supporting the steel strand tray 7; the inside channel-section steel that does not set up of rack 1 top rectangle, cavity setting for placing and taking out of steel strand dish 7.

Rack 1's front, adopt a phi 16HPB300 reinforcing bar 4 to bend into diameter 300 mm's circular as wire hole 2, the welding has the channel-section steel that two levels set up to enclose into a square between two positive adjacent vertical channel-section steels of rack 1, the square is located the positive central point of rack 1 and puts, wire hole 2 welds between rack 1 positive squares, if the square area is too big, when leading to wire hole 2 diameter too big, can set up the rhombus frame between the square, set up wire hole 2 between the rhombus frame again, can effectively reduce wire hole 2's diameter, improve and prevent indiscriminate dish and kinked ability.

Referring to fig. 2, the disorder preventing device is arranged outside the placing rack 1, fixed on the ground, the table top or the wall surface close to the placing rack 1, and is formed by processing a phi 16HPB300 steel bar 4 with the length of 100mm, a steel plate 5 with the thickness of 20mm and the thickness of 300 multiplied by 200mm, and a phi 42mm cold-rolled seamless steel pipe 3 with the length of 10mm and the thickness of 4mm, wherein one end of the steel bar 4 is fixed at the central part of the surface of the steel plate 5, and the other end of the steel bar 4 is fixed on the peripheral surface of the central part of the steel pipe 3.

Referring to fig. 3, the bottom surface of the placing rack 1 is connected with four universal wheels 6 capable of braking, and the four universal wheels 6 capable of braking are arranged at four corners of the bottom of the placing rack 1 through bolts.

Referring to fig. 4, the whole bundle of steel strand coils 7 is placed in the structure of the placing frame 1, and because the placing frame 1 is slightly larger than the whole bundle of steel strands, a wedge-shaped wood wedge is plugged into the placing frame 1 to be fastened with a gap between the steel strands, the steel strands are firstly discharged from the wire outlet holes 2, and then penetrate through the steel pipes 3 on the disorder prevention device to prevent the steel strands from popping out to hurt people.

The above contents are only for explaining the technical idea of the present invention, and the protection scope of the present invention cannot be limited thereby, and any modification made on the basis of the technical solution according to the technical idea of the present invention all fall within the protection scope of the claims of the present invention.

Claims

1. A steel strand stress limiting device is characterized by comprising a placing frame (1) and an anti-disorder device;

the rack (1) is a frame structure formed by fixing a plurality of steel bars, the rack (1) is hollow, an opening is formed in the top of the rack, the length and height of the rack (1) are greater than the diameter of the steel strand coil (7), and the width of the rack is greater than the axial length of the steel strand coil (7);

the disorder preventing device is close to the placing rack (1) and comprises a steel bar (4) and a steel pipe (3), the inner diameter of the steel pipe (3) is larger than the diameter of a steel strand, and one end of the steel bar (4) is radially fixed on the circumferential surface of the steel pipe (3).

2. The steel strand stress limiting device as claimed in claim 1, wherein four universal wheels are connected to the bottom surface of the placing frame (1).

3. The steel strand stress limiting device according to claim 2, wherein the universal wheel is a brakeable universal wheel (6).

4. The steel strand stress limiting device as claimed in claim 1, wherein the top and bottom of the placing rack (1) are rectangles formed by four steel bars, four corners and side lines of the two rectangles are connected through a plurality of first steel bars, and a second steel bar for supporting is arranged in the rectangle at the bottom.

5. A steel strand stress limiting device as claimed in claim 4, wherein the number of the second steel bars is at least two, and the second steel bars are symmetrically arranged relative to the rectangular central line at the bottom of the placing frame (1).

6. The steel strand stress limiting device as claimed in claim 1, wherein a wire outlet hole (2) is fixed at a central part of the front surface of the placing frame (1), and the wire outlet hole (2) is of a circular ring structure.

7. A strand stress limiter according to claim 1, wherein the turbulence preventer has a steel plate (5) fixed to the free end of the reinforcing bars (4), and the reinforcing bars (4) are fixed perpendicular to the surface of the steel plate (5).