CN203373997U - Guide rail type steel strand limiting tool - Google Patents

Abstract

The utility model discloses a guide rail type steel strand limit tool, which belongs to the field of construction engineering. It includes a base, a bracket, and a threading device. The bracket is in the shape of an "L" rotated clockwise by 90°, and includes a vertical beam and a cross beam; the vertical beam is vertically fixed on the base; the inner length of the cross beam is There is a guide groove in the direction; the cross section of the guide groove is "T"-shaped; the threading device includes a horizontal guide rib and a vertical plate, and the horizontal guide rib and the vertical plate form a "T"shape; The vertical plate is provided with a through hole; the "T" shape formed by the horizontal guide rib plate and the vertical plate is matched with the "T" shape of the cross section of the guide groove. The utility model uses a separate threading device to cooperate with the guide rail to limit the position of the steel strand, which can move freely along the guide rail, increase or decrease the number, and prevent the broken steel strand from hurting people, and has a simple structure, convenient construction, and easy installation. promote.

Description

A guide rail type steel strand limiter

technical field

The invention belongs to the field of construction engineering, and more specifically relates to a guide rail type steel strand limiter. the

Background technique

After more than half a century of development and with the gradual maturity of prestressing technology, prestressed concrete has broken through the constraints that concrete cannot be stretched and cracked, and its application range has been greatly expanded. At present, prestressed concrete has become the most important structural material for bridge projects at home and abroad. For bridges with large spans, the prestressed steel used is mostly steel strands, but this kind of steel is still heavy and easy to rust. Disadvantages, in addition, the tensioning process of the steel strand is carried out outside the body of the tensioned girder, and it needs to accept a large amount of pulling force from hydraulic equipment such as jacks, and it is very easy to crack, break and other accidents due to stress concentration and other reasons. The rebounding steel wire will cause great danger to the lives of the surrounding construction workers. Some rebounded steel wires rebounded on people's faces or bodies, causing skin trauma in mild cases, and life-threatening in severe cases. But the existing equipment only considered how to better straighten the steel strand when designing, and seldom considered the problem of rebounding after the steel strand breaks. For example: the Chinese patent number is 201220019698.8, and the publication date is October 3, 2012. It discloses a patent document named two-way prestressed anti-fatigue steel beam. Blocks, flat pads, prestressed high-strength bolts, nuts, crimped anchor heads, support stiffeners and supports. Two symmetrically arranged steel strands are used to apply the longitudinal prestress of the steel beam at the web near the lower flange of the steel beam, and the steel beam is applied with high-strength bolts at an appropriate distance on both sides of the web symmetrically over the entire length of the beam. Lateral prestress. Under this bidirectional prestressing action, the lower flange of the steel girder does not enter the state of tensile stress under the action of fatigue load, and the principal stress of the oblique section of the web does not enter the state of tension under the shear force generated by the wheel pressure, thus ensuring that the steel Neither the beam flange nor the web will suffer fatigue damage. Therefore, the steel girder controlled by the fatigue bearing capacity can effectively use high-strength steel, save resources, improve safety, and prevent fatigue damage.

As another example, the Chinese patent number is 02235214.7, and the publication date is December 25, 2002. It discloses a patent document titled a prestressed large-span solid web steel beam structure system. This invention discloses a prestressed large-span solid The web steel girder structure system includes single-span steel girders or multi-span continuous steel girders with I-shaped or box-shaped cross-sections, and two sets of mutually symmetrical prestressed beams are arranged on both sides of the steel girder web and along its length. The two ends of the prestressed tendon are anchored to the anchors fixed on the steel beam. Each group of prestressed tendons is more than one bundle, which is arranged along the entire length of the steel girder or only at the part of the steel girder that bears a large tensile stress. It can be parallel to the steel girder web or form an angle with the steel girder web. The prestressed tendon can be bent and passed through the reserved hole on the flange plate, and the steel beam flange plate and web plate corresponding to the bending position of the prestressed tendon are welded with a stiffener plate. After the steel structure beam is installed and fixed, the prestressed large-span solid web steel beam structure system is formed by tensioning the two sets of prestressed tendons to form a prestressed large-span solid web steel beam structure system, which can be used for steel structures with large beam spans or bridges etc.

The above-mentioned steel girders are widely used in the manufacturing process of bridges with large spans. During the construction process, there is no protection device to prevent the steel strands from flying up due to breakage. The steel strands are pulled outside the steel girder and require Workers operate to adjust the connection parts of steel strands. Still do not solve if the steel strand breakage accident takes place, the problem that the worker's life is threatened. the

Contents of the invention

1. Problems to be solved

Aiming at the above-mentioned problems existing in the prior art, the present invention provides a guide rail-type steel strand limit tool, which uses a separate threading device to cooperate with the guide rail to limit the position of the steel strand, and can freely move, increase or decrease along the guide rail Quantity plays a role in preventing broken steel strands from injuring people, and has a simple structure, convenient construction and easy promotion.

2. Technical solution

In order to solve the above problems, the technical solution adopted by the present invention is as follows.

A rail-type steel strand limiter, including a base, a bracket, and a threading device, the bracket is in the shape of an "L" rotated 90° clockwise, and includes a vertical beam and a cross beam; the vertical beam is fixed vertically On the base; there is a guide groove along the length of the beam; the cross section of the guide groove is "T"; the threading device includes a horizontal guide rib and a vertical plate; the vertical plate is vertical Fixed in the middle of the bottom surface of the horizontal guiding rib, the horizontal guiding rib and the vertical plate form a "T" shape; the vertical plate has a through hole; the "T" formed by the horizontal guiding rib and the vertical plate "The font shape is matched with the "T" font of the cross section of the guide groove.

Preferably, lubricating oil is coated in the guide groove.

Preferably, the through holes on the vertical plate are round holes or square holes.

Preferably, the weight of the threading device is 0.5-1 kg.

More preferably, the bracket is made of stainless steel.

More preferably, there are 13-35 threading devices.

3. Beneficial effects

Compared with the existing technology, the technical solution provided by the invention has the following beneficial effects:

(1) The guide rail type steel strand limit tooling of the present invention includes a base, a bracket, and a threading device. The bracket is provided with a guide groove, and the threading device is matched with the guide groove to slide freely in the groove. Stranded wire passes through the hole, and the corresponding number of threading devices can be selected according to the number of steel strands required to be stretched, which can prevent broken steel strands from hurting people, and has a simple structure, convenient construction, and easy promotion;

(2) The lubricating oil is coated in the guide groove of the present invention, so that the threading device can be installed more smoothly between the guide rails;

(3) The bracket of the present invention is made of stainless steel, which can effectively block broken prestressed steel strands.

Description of drawings

Fig. 1 is a structural representation of the present invention;

Fig. 2 is a schematic cross-sectional view of the guide rail of the present invention;

Fig. 3 is a schematic structural view of the threading device of the present invention.

In the figure: 1. base; 2. bracket; 3. threading device; 4. horizontal guiding rib; 5. vertical plate.

Detailed ways

The present invention will be described in detail below in conjunction with specific drawings.

As shown in Fig. 1, Fig. 2 and Fig. 3, a rail-type steel strand limit tooling includes a base 1, a bracket 2, and a threading device 3, and the bracket 2 is in the shape of an "L" rotated 90° clockwise. It includes a vertical beam and a cross beam, the vertical beam is vertically fixed on the base 1, and a guide groove is provided along the length direction inside the beam, and the cross section of the guide groove is in the shape of "T"; The straight plate 5 and the vertical plate 5 are vertically fixed on the middle part of the bottom surface of the horizontal guide rib 4, and the horizontal guide rib 4 and the vertical plate 5 form a “T” shape; the vertical plate 5 has a through hole; the horizontal guide rib The "T" shape formed by the plate 4 and the vertical plate 5 matches the "T" shape of the cross section of the guide groove.

Be coated with lubricating oil in the guide groove; The through hole on the vertical plate 5 is a square hole; The weight of threading device 3 is 0.5-1kg; Support 2 is made of stainless steel; The quantity of threading device 3 has 22.

When in use, at the connection between the steel strand and the finishing thread, the tooling is vertically passed through the steel strand bundle horizontally, so that all the steel strands are under the support 2, and then the corresponding threading device 3 is selected according to the number of steel strands, and Install them in the guide groove on the crossbeam of the bracket 2 in turn, and then put the steel strands into the square holes on the threading device 3 .

Example 1

A rail-type steel strand limiter, including a base 1, a bracket 2, and a threading device 3, the bracket 2 is in the shape of an "L" rotated 90° clockwise, and includes vertical beams and cross beams; the vertical beams are fixed vertically On the base 1; there is a guide groove along the length of the beam; the cross section of the guide groove is "T"; the threading device 3 includes a horizontal guide rib 4 and a vertical plate 5; the vertical plate 5 is vertically fixed on the horizontal In the middle of the bottom surface of the guide rib 4, the horizontal guide rib 4 and the vertical plate 5 form a "T" shape; the vertical plate 5 has a through hole; the "T" formed by the horizontal guide rib 4 and the vertical plate 5 The font shape matches the "T" font of the cross section of the guide groove. The guide groove is coated with lubricating oil. The through hole on the vertical plate 5 is a round hole or a square hole. The weight of threading device 3 is 0.8kg. The bracket 2 is made of stainless steel. There are 22 threading devices 3 in quantity.

Example 2

Same as embodiment 1, the difference is that the weight of the threading device 3 is 0.5kg; the quantity of the threading device 3 is 35.

Example 3

With embodiment 1, difference is that the weight of threading device 3 is 1kg; The quantity of threading device 3 has 13.

The above schematically describes the present invention and its implementation, which is not restrictive, and what is shown in the drawings is only one of the implementations of the present invention, and the actual structure is not limited thereto. Therefore, if a person of ordinary skill in the art is inspired by it, without departing from the inventive concept of the present invention, without creatively designing a structural mode and embodiment similar to the technical solution, it shall all belong to the protection scope of the present invention . the

Claims (6)

1. a guide tracked steel strand limiting tool, comprise base (1), it is characterized in that: also comprise support (2), threader (3), described support (2) is 90 ° " L " font of turning clockwise, and comprises vertical beam and crossbeam; Described vertical beam vertically is fixed on base (1); Be provided with along its length guide groove in described crossbeam; The cross section of described guide groove is " T " font; Described threader (3) comprises level guiding floor (4) and vertical plate (5); Described vertical plate (5) vertically is fixed in the middle part of level guiding floor (4) bottom surface, and level guiding floor (4) and vertical plate (5) form " T " font; Described vertical plate has through hole on (5); " T " font shape that described level guiding floor (4) and vertical plate (5) form matches with " T " font of the cross section of guide groove.

2. a kind of guide tracked steel strand limiting tool according to claim 1, is characterized in that: in described guide groove, scribble lubrication oil.

3. a kind of guide tracked steel strand limiting tool according to claim 1, it is characterized in that: the through hole on described vertical plate (5) is circular hole or square hole.

4. a kind of guide tracked steel strand limiting tool according to claim 1, it is characterized in that: the weight of described threader (3) is 0.5-1kg.

5. according to the described a kind of guide tracked steel strand limiting tool of any one in claim 1-4, it is characterized in that: described support (2) is made by stainless steel.

6. a kind of guide tracked steel strand limiting tool according to claim 5 is characterized in that: the quantity of described threader (3) has 13-35.

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