CN221133894U - A construction frame for pre-buried steel bars of beam and slab guardrail - Google Patents

Abstract

The utility model discloses a beam slab guardrail embedded steel bar construction jig frame which comprises two supporting tables, wherein the supporting tables are of a door-shaped structure, and the high ends of the two supporting tables are connected with a limiting baffle frame and a positioning frame; the number of the locating frames is not less than two, a plurality of locating grooves used for limiting the reinforcing steel bars are formed in the locating frames, and the locating grooves are uniformly distributed along the length direction of the locating frames. According to the utility model, the longitudinally extending steel bars are limited by the limiting grooves, the transverse steel bars can be positioned by the positioning grooves, and the auxiliary steel bars are placed in order and uniformly, so that the intervals between the embedded steel bars of the prefabricated box girder are more uniform and vertical; the fixed reinforcing bar is convenient for welding operation more, alleviates reinforcing bar welded operation degree of difficulty, guarantees the homogeneity when reinforcing bar welding, realizes optimizing the construction of prefabricated case roof beam anticollision barrier reinforcing bar structural style, improves the efficiency of construction.

Description

A construction frame for pre-embedded steel bars of beam and slab guardrail

Technical Field

The utility model relates to the field of guardrail construction, in particular to a construction frame for pre-embedded steel bars of beam and slab guardrails.

Background technique

With the continuous development of China's economy, especially the development of roads is gradually accelerating. Concrete guardrails are installed on both sides of highways and viaducts. This guardrail has a steel frame inside, which is welded by transverse and longitudinal steel bars. Finally, the guardrail is formed by pouring and solidifying concrete. This guardrail has the advantages of stable structure and high strength.

In previous guardrail construction, the guardrail steel bars were positioned using the wire pulling method. The steel bars were pre-fixed by binding, and then the transverse and longitudinal steel bars were welded. This operation was cumbersome and required workers to work at the edge of the bridge for a long time, posing a high safety risk. During the construction process, the transverse and longitudinal distances between the steel bars were mainly affected by the construction workers' skills, which was not easy to control and resulted in low construction efficiency.

Therefore, providing a kind of beam and slab guardrail pre-embedded steel bar construction cradle has become an issue worthy of study.

Utility Model Content

In order to solve the deficiencies in the above-mentioned prior art, the purpose of the utility model is to improve the overall safety of guardrail construction, increase the construction speed and improve the quality.

The purpose of the utility model is achieved in this way:

The utility model provides a construction frame for pre-embedded steel bars of beam and slab guardrails, comprising two support platforms, the support platforms are in a door-shaped structure, and the high ends of the two support platforms are connected to a limited stop frame and a positioning frame;

The limit stop frame is provided with a limit groove for limiting the longitudinal steel bar;

The number of the positioning frames is not less than two, and the positioning frames are provided with a plurality of positioning grooves for limiting the transverse steel bars, and the positioning grooves are evenly distributed along the length direction of the positioning frames.

It is further described that the limit stop frame is a door-shaped structure, both ends of which are fixedly connected to the high end of the support platform, and the limit stop frame is close to one side of the support platform.

It is further described that the support platform includes a support vertical rod and a support horizontal rod, and there are two support vertical rods, which are welded to the bottom surface of the support horizontal rod.

It is further described that a second connecting rib is connected between the two support platforms, and a first connecting rib is connected between the two support uprights located on the same support platform.

It is further described that the positioning frame is close to a side of the support platform away from the limiting stop frame.

It is further described that the height of the positioning groove is 20 mm and the length is 35 mm.

It is further described that a limiting member is connected between the two support platforms, the limiting member is located at the high end of the support platform, and the limiting member is used to limit the steel bars in the positioning groove.

It is further described that the limiting member includes a sliding bar, which is slidably matched with the two supporting cross bars. The outer end of the sliding bar passes through the supporting cross bars and has a zigzag limiting structure. The two zigzag limiting structures are respectively provided with thrust springs, and the surface of the sliding bar is provided with a limiting baffle corresponding to the positioning groove.

It is further described that the limit baffle is a broken line structure, one end of which is fixedly connected to the slide bar, and the thrust spring is located on the limit structure away from the open end of the limit baffle.

Positive beneficial effects:

This device does not require construction workers to be on the edge of the bridge for a long time to perform construction operations. The construction is carried out by pre-processing, and then the welded semi-finished steel bar frame is fixed, which is safer;

The longitudinally extending steel bars are limited by the limiting grooves, and the transverse steel bars can be positioned by the positioning grooves, so that the auxiliary steel bars are arranged neatly and evenly, making the spacing of the embedded steel bars of the prefabricated box beam more uniform and vertical;

The fixed steel bars are easier to weld, which reduces the difficulty of steel bar welding and ensures the uniformity of steel bar welding, thus optimizing the construction of the steel bar structure of the prefabricated box girder anti-collision guardrail and improving construction efficiency.

In a preferred embodiment, the limiting member can assist in limiting the position of the transverse steel bars, so that the steel bars can be placed and limited close to one side of the positioning groove, which is convenient for removing the steel bars after welding is completed, thereby improving the construction efficiency of steel bar welding and removal.

BRIEF DESCRIPTION OF THE DRAWINGS

Fig. 1 is a schematic diagram of the structure of the utility model;

Figure 2 is a front view of the utility model;

Fig. 3 is a left view of the utility model;

FIG4 is a schematic diagram of the structure of the support platform in the utility model;

FIG5 is a schematic diagram of the structure of the positioning frame in the utility model;

FIG6 is a schematic diagram of the structure of the position limiting member in the utility model;

The figure shows: a support platform 1, a support vertical rod 101, a support horizontal rod 102, a first connecting rib 103, a second connecting rib 104, a limit stop frame 2, a positioning frame 3, a positioning groove 301, a limit member 4, a slide bar 401, a limit stop plate 402, and a thrust spring 403;

Implementation

The utility model is further described below in conjunction with the accompanying drawings and embodiments.

Example 1

Referring to FIGS. 1 to 5 , the utility model provides a beam and slab guardrail pre-embedded steel bar construction frame, comprising two support platforms 1, the support platforms 1 are door-shaped structures, and the high ends of the two support platforms 1 are connected with a limited stop frame 2 and a positioning frame 3; wherein the height of the support platform 1 is 800-900 mm, and is used to support the entire operating platform and assist in the welding of welded steel bars;

The limit stop frame 2 is provided with a limit groove 201 for limiting the longitudinal steel bar;

The number of the positioning frames 3 is not less than two, and the positioning frames 3 are provided with a plurality of positioning grooves 301 for limiting the transverse steel bars. The positioning grooves 301 are evenly distributed along the length direction of the positioning frames 3, and the steel bars can be positioned through the positioning grooves 301;

The guardrail steel bars are placed inside the positioning groove 301 and the limiting groove 201. The longitudinally extending steel bars are limited by the limiting groove 201, and the transverse steel bars can be positioned by the positioning groove 301. When the steel bars are neatly arranged inside the positioning groove 301 and the limiting groove 201, the distance between the steel bars is more uniform, and it is convenient to perform welding operations, making it a semi-finished embedded part. Then, the distance between adjacent steel bars after welding is the same, ensuring the uniformity of steel bar welding, making the spacing of the embedded steel bars of the prefabricated box beam more uniform and vertical, thereby reducing the difficulty of steel bar welding operations, realizing the construction optimization of the prefabricated box beam anti-collision guardrail steel bar structure, and improving construction efficiency.

The number of the positioning frames 3 is preferably three, and they are distributed along the length direction of the support platform 1 .

Furthermore, the limit stop frame 2 is a door-shaped structure, and its two ends are fixedly connected to the high end of the support platform 1. The limit stop frame 2 is close to one side of the support platform 1, and the positioning frame 3 is away from the limit stop frame 2, wherein the limit stop frame 2 includes a horizontally arranged equilateral angle steel and two vertically arranged equilateral angle steels, the length of the horizontally arranged equilateral angle steel is 2100mm, and the length of the vertically arranged equilateral angle steel is 30mm, wherein the limit groove 201 is located on the horizontal side wall of the horizontally arranged equilateral angle steel, which corresponds to the positioning groove 301, and the cross-sectional dimensions of the two lengths of angle steel are L50×5, and the two vertical angle steels are welded and fixed to the horizontal angle steel, which can play a supporting role for the steel bars. The vertical angle steel of the limit stop frame 2 can vertically position the steel bars, and can also position the steel bars connected to the guardrail, thereby playing a double insurance support and being more secure.

Embodiment 2 is different from Embodiment 1 in that: as shown in Figures 1 and 4, the support platform 1 includes a support vertical pole 101 and a support cross bar 102. There are two support vertical poles 101, which are welded to the bottom surface of the support cross bar 102. A second connecting rib 104 is connected between the two support platforms 1. A first connecting rib 103 is connected between the two support vertical poles 101 located on the same support platform 1. The first connecting rib 103 is 200 mm away from the bottom end of the support vertical pole 101. The support vertical pole 101 is a galvanized steel pipe with a height of 800 mm. The support cross bar 102 can assist in the connection and installation of the limit stop frame 2 and the positioning frame 3. The first connecting rib 103 and the second connecting rib 104 can improve the overall supporting strength of the support platform 1 to make it more stable.

Embodiment 3 is different from Embodiment 1 in that: as shown in FIG. 5 , the height of the positioning groove 301 is 20 mm and the length is 35 mm. When the No. 1 embedded steel bar and the No. 2 embedded steel bar are placed inside the positioning groove 301, they are placed on one side of the length of the positioning groove 301 and welded. When they need to be removed, they are gently moved to the other side. Since the opening of the positioning groove 301 is 3-5 mm larger than the steel bar of the welding hook, it is convenient to take out the steel bar. The positioning frame 3 is an equilateral angle steel of L50×5 with a length of 2100 mm. The distance between two adjacent positioning grooves 301 is 150 mm. The 2100 mm long positioning frame 3 is mainly convenient for workers to directly place the welded semi-finished products on the top plate steel bars.

Embodiment 4 is different from Embodiment 1 in that: as shown in Figures 1 and 6, a limiting member 4 is connected between the two support platforms 1, the limiting member 4 is located at the high end of the support platform 1, and the limiting member 4 is used to limit the steel bars in the positioning groove 301; in specific implementation, the limiting member 4 includes a slide bar 401, the slide bar 401 is slidably matched with the two support cross bars 102, the outer end of the slide bar 401 passes through the support cross bar 102, and has a broken line limiting structure, the slide bar 401 is a plate-shaped structure as a whole, the slide bar 401 is slidably matched with the support cross bars 102 on the two support platforms 1, and the two broken line limiting structures are respectively provided with thrust springs 403, and the surface of the slide bar 401 is provided with a limiting baffle 402 corresponding to the positioning groove 301, and the elasticity of the thrust spring 403 is used to push the slide bar 401 to make the slide bar 401 slide between the support cross bars 102, so that the steel bars in the positioning groove 301 are limited by the limiting baffle 402 on the surface of the slide bar 401;

In a preferred embodiment, the limit baffle 402 is a zigzag structure, one end of which is welded and fixed to the slide bar 401, and the thrust spring 403 is installed on the limit structure at the open end of the limit baffle 402. The elasticity of the thrust spring 403 can be used to push the slide bar 401 to move, so that the limit baffle 402 limits the bolt in the positioning groove 301, and a threaded hole is provided on another limit structure on the slide bar 401, and a bolt is connected inside the threaded hole. The inner end of the bolt can contact the surface of the supporting cross bar 102, and the position of the slide bar 401 can be adjusted by screwing the bolt. After the position of the slide bar 401 is adjusted by the bolt, when the steel bar is placed inside the positioning groove 301, there is no need for other people to overcome the elasticity of the thrust spring 403 and continue to push the slide bar 401, so that the positioning groove 301 can be kept continuously open. After the bolt is screwed out, the elasticity of the thrust spring 403 can be used to limit the steel bar in the positioning groove 301.

Claims (9)

1. A construction frame for pre-embedded steel bars of a beam and slab guardrail, comprising two support platforms (1), wherein the support platforms (1) are of a door-shaped structure, and are characterized in that: The high ends of the two support platforms (1) are connected to a limit stop frame (2) and a positioning frame (3); The limit stop frame (2) is provided with a limit groove (201) for limiting the longitudinal steel bar; The number of the positioning frames (3) is not less than two, and the positioning frames (3) are provided with a plurality of positioning grooves (301) for limiting the position of transverse steel bars, and the positioning grooves (301) are evenly distributed along the length direction of the positioning frames (3). 2. A construction frame for embedded steel bars of beam and slab guardrails according to claim 1, characterized in that: the limit stop frame (2) is a door-shaped structure, and its two ends are fixedly connected to the high end of the support platform (1), and the limit stop frame (2) is close to one side of the support platform (1). 3. A construction frame for embedded steel bars of beam and slab guardrails according to claim 2, characterized in that: the support platform (1) comprises a support vertical rod (101) and a support horizontal rod (102), and there are two support vertical rods (101) which are welded to the bottom surface of the support horizontal rod (102). 4. A construction cradle for embedded steel bars of beam and slab guardrails according to claim 3, characterized in that a second connecting rib (104) is connected between the two support platforms (1), and a first connecting rib (103) is connected between the two support uprights (101) located on the same support platform (1). 5. A construction frame for embedded steel bars of beam and slab guardrails according to claim 2, characterized in that the positioning frame (3) is close to the side of the support platform (1) away from the limit stop frame (2). 6. A construction cradle for embedded steel bars of beam and slab guardrails according to claim 5, characterized in that the height of the positioning groove (301) is 20 mm and the length is 35 mm. 7. A construction cradle for embedded steel bars of beam and slab guardrails according to claim 3 or 4, characterized in that a limiting member (4) is connected between the two support platforms (1), the limiting member (4) is located at the high end of the support platform (1), and the limiting member (4) is used to limit the steel bars in the positioning groove (301). 8. A construction cradle for embedded steel bars of beam and slab guardrails according to claim 7, characterized in that: the limiting member (4) comprises a slide bar (401), the slide bar (401) is slidably matched with the two support cross bars (102), the outer end of the slide bar (401) passes through the support cross bars (102), and has a broken line limiting structure, thrust springs (403) are respectively provided on the two broken line limiting structures, and a limiting baffle (402) corresponding to the positioning groove (301) is provided on the surface of the slide bar (401). 9. A construction cradle for embedded steel bars of beam and slab guardrails according to claim 8, characterized in that: the limit baffle (402) is a broken line structure, one end of which is fixedly connected to the slide bar (401), and the thrust spring (403) is located on the limit structure away from the open end of the limit baffle (402).