Positioning rack for bridge concrete guardrail reinforcing steel bars

Abstract

The utility model provides a positioning rack for a bridge concrete guardrail reinforcing steel bar, and relates to the field of bridge construction. The positioning rack comprises a main body frame, a vertical steel bar positioning assembly, a horizontal steel bar positioning assembly and a marker post positioning assembly, the vertical steel bar positioning assembly comprises a plurality of first positioning rods which are arranged in parallel, any first positioning rod is in sliding fit with the main body frame, and the first positioning rods are jointly connected with a first adjusting part; the horizontal steel bar positioning assembly comprises a plurality of second positioning rods which are arranged in parallel, any second positioning rod is in sliding fit with the main body frame, the second positioning rods are jointly connected with a second adjusting part, and the plane formed by the second positioning rods is perpendicular to the plane formed by the first positioning rods; the marker post positioning assembly comprises a plurality of third positioning rods arranged on the annular side of the main body frame, and the plurality of third positioning rods are arranged in parallel; and the main body frame is provided with two infrared sighting devices. The arrangement precision of the vertical steel bars and the horizontal steel bars and the control precision of the steel bar protection layer can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of bridge construction, in particular to a positioning stand for steel bars of a bridge concrete guardrail. Background Art

[0002] Bridges generally refer to structures erected over rivers, lakes, and seas to allow vehicles and pedestrians to pass smoothly. In order to adapt to the modern high-speed development of the transportation industry, bridges are also extended to buildings that are erected to cross mountain streams, poor geology, or meet other transportation needs to make travel more convenient. Bridges are generally composed of superstructures, substructures, supports, and ancillary structures. The superstructure, also known as the span structure, is the main structure for crossing obstacles; the substructure includes abutments, piers, and foundations; the supports are force transmission devices installed at the supporting locations of the span structure and piers or abutments; and the ancillary structures refer to the bridgehead slabs, conical slope protection, revetments, diversion projects, etc.

[0003] Concrete guardrail is one of the components of bridges. It is generally constructed by on-site casting, which requires on-site tying of steel bars and formwork casting. The above steel bars are mainly composed of vertical steel bars and horizontal steel bars. The number of vertical steel bars and horizontal steel bars is multiple. Multiple vertical steel bars are evenly spaced along the extension direction of the bridge, and any vertical steel bar is connected to the embedded steel bars of the bridge. Multiple horizontal steel bars are evenly spaced along the gravity direction of the bridge, and any horizontal steel bar is connected to multiple vertical steel bars at the same time. In the prior art, both vertical steel bars and horizontal steel bars are manually measured and positioned, resulting in large errors in the installation spacing of multiple vertical steel bars, the installation spacing of multiple horizontal steel bars and the steel bar protective layer on the bridge. Utility Model Content

[0004] The utility model aims to provide a positioning stand for steel bars of bridge concrete guardrails, aiming to solve the technical problems in the above-mentioned background technology.

[0005] The technical solution of the utility model is achieved in this way:

[0006] The technical solution of the present application provides a positioning stand for bridge concrete guardrail steel bars, including a main frame, a vertical steel bar positioning assembly, a horizontal steel bar positioning assembly and a benchmark positioning assembly;

[0007] The vertical steel bar positioning assembly includes a plurality of first positioning rods arranged on the main frame, any of the first positioning rods is slidably matched with the main frame, the plurality of first positioning rods are arranged in parallel, and the spacing between any adjacent first positioning rods is equal, and the same side of the plurality of first positioning rods is commonly connected with a first adjusting member;

[0008] The horizontal steel bar positioning assembly includes a plurality of second positioning rods arranged on the main frame, any of the second positioning rods is slidably matched with the main frame, the plurality of second positioning rods are arranged in parallel, and the spacing between any adjacent second positioning rods is equal, the same side of the plurality of second positioning rods is commonly connected with a second adjusting member, the second adjusting member and the first adjusting member are both located on the same side of the main frame, any of the second positioning rods is parallel to any of the first positioning rods, and the plane formed by the plurality of second positioning rods is perpendicular to the plane formed by the plurality of first positioning rods;

[0009] The above-mentioned pole positioning assembly includes a plurality of third positioning rods arranged on the ring side of the above-mentioned main frame, any of the above-mentioned third positioning rods and the above-mentioned first adjustment member are respectively located on both sides of the above-mentioned main frame, and the plurality of the above-mentioned third positioning rods are arranged in parallel, and the plane formed by the plurality of the above-mentioned third positioning rods is parallel to the plane formed by the plurality of the above-mentioned second positioning rods;

[0010] The main frame is provided with two infrared sights, and the projection part of any one of the infrared sights is facing downward of the main frame. The two straight lines projected by the two infrared sights form a plane which is perpendicular to the plane formed by the plurality of first positioning rods and the plane formed by the plurality of second positioning rods.

[0011] In some embodiments of the present invention, a plurality of first positioning rods are arranged in parallel along the transverse direction of the main frame, and the main frame is provided with a transversely arranged first level ruler.

[0012] In some embodiments of the present invention, the main frame is provided with a second horizontal ruler arranged vertically.

[0013] In some embodiments of the present invention, a positive four-wheel walking mechanism is provided on the bottom side of the main frame.

[0014] In some embodiments of the present utility model, a plurality of height adjustment structures are provided around the lower part of the main frame;

[0015] Any of the above-mentioned height adjustment structures includes two adjusting nuts arranged on the above-mentioned main frame, the two adjusting nuts are arranged at intervals along the vertical direction of the above-mentioned main frame, and the two adjusting nuts are jointly penetrated by a threaded rod, the bottom of the above-mentioned threaded rod can extend to the bottom of the above-mentioned main frame, and a support plate is arranged on the bottom side of the above-mentioned threaded rod.

[0016] In some embodiments of the present invention, the number of the vertical steel bar positioning assemblies is two, and the two vertical steel bar positioning assemblies are arranged at intervals along the vertical direction of the main frame.

[0017] In some embodiments of the present invention, the main frame is provided with first cylinders having the same number as the first positioning rods, and the plurality of first positioning rods are respectively slidably matched with the plurality of first cylinders.

[0018] In some embodiments of the present invention, the main frame is provided with second cylinders having the same number as the second positioning rods, and the plurality of second positioning rods are respectively slidably matched with the plurality of second cylinders.

[0019] Compared with the prior art, the technical solution of the utility model has at least the following advantages or beneficial effects:

[0020] When the present application is applied to the installation of bridge guardrail steel bars, a standard line is made on one side of the steel bar installation position along the extension direction of the bridge, so that the distance from any position of the above standard line to the steel bar installation position is the same. The main frame is placed near the standard line and positioned by two infrared sights (the projection points of the two infrared sights both fall on the standard line), ensuring that the free end of the first positioning rod (the end away from the first adjustment member), the free end of the second positioning rod (the end away from the second adjustment member) and the free end of the third positioning rod (the end away from the main frame) are all facing the steel bar installation position; after the main frame is positioned, vertical steel bars are installed opposite the steel bar installation position of the free end of the third positioning rod as a benchmark. The benchmark type vertical steel bars must be in contact with the free end of the third positioning rod during installation, which not only realizes the accurate positioning of the benchmark type vertical steel bars , and also ensures that the value of the steel bar protection layer is constant. Multiple benchmark-type vertical steel bars can be positioned along the extension direction of the bridge; after the benchmark-type vertical steel bars are determined, another type of vertical steel bars are positioned between adjacent benchmark-type vertical steel bars for reinforcement, hereinafter referred to as reinforced vertical steel bars, and horizontal installation is also required; the main frame is placed near the standard line and positioned through two infrared sights, the third positioning rod and the benchmark-type vertical steel bar are connected, so that the first adjustment member drives multiple first positioning rods to extend between adjacent benchmark types, and reinforced vertical steel bars are installed on the same side of multiple first positioning rods, respectively, to achieve equidistant distribution of vertical steel bars. The second adjustment member drives the second positioning rod to extend between two adjacent benchmark-type vertical steel bars, and horizontal steel bars are installed on the same side of multiple second positioning rods, respectively, to achieve equidistant distribution of multiple horizontal steel bars. The utility model solves the problem that when traditional steel bars are installed, both vertical and horizontal steel bars are manually measured and positioned, and the installation spacing of vertical steel bars, the installation spacing of multiple horizontal steel bars and the steel bar protection layer are inaccurate. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 This is a schematic diagram of the structure of a positioning stand for a bridge concrete guardrail reinforcement according to an embodiment of the utility model. Figure 1 ;

[0023] Figure 2 This is a schematic diagram of the structure of a positioning stand for a bridge concrete guardrail reinforcement according to an embodiment of the utility model. Figure 2 .

[0024] Icons: 1-four-wheel walking mechanism, 2-main frame, 3-first positioning rod, 4-first cylinder, 5-first adjusting piece, 6-first level ruler, 7-second cylinder, 8-second positioning rod, 9-second adjusting piece, 10-threaded rod, 11-adjusting nut, 12-support plate, 13-second level ruler, 14-third positioning rod, 15-infrared sight. DETAILED DESCRIPTION

[0025] Example 1

[0026] Please refer to Figure 1 and Figure 2A positioning stand for steel bars of a bridge concrete guardrail, comprising a main frame 2, a vertical steel bar positioning assembly, a horizontal steel bar positioning assembly and a benchmark positioning assembly; the vertical steel bar positioning assembly comprises a plurality of first positioning rods 3 arranged on the main frame 2, any of the first positioning rods 3 and the main frame 2 are slidably matched, the plurality of first positioning rods 3 are arranged in parallel, and the spacing between any adjacent first positioning rods 3 is equal, and the same side of the plurality of first positioning rods 3 is commonly connected with a first adjusting member 5; the horizontal steel bar positioning assembly comprises a plurality of second positioning rods 8 arranged on the main frame 2, any of the second positioning rods 8 and the main frame 2 are slidably matched, the plurality of second positioning rods 8 are arranged in parallel, and the spacing between any adjacent second positioning rods 8 is equal, and the same side of the plurality of second positioning rods 8 is commonly connected with a second adjusting member 9, and the second adjusting member 9 and the first adjusting member 5 are all located on the same side of the above-mentioned main frame 2, any of the above-mentioned second positioning rods 8 is parallel to any of the above-mentioned first positioning rods 3, and the plane formed by the plurality of the above-mentioned second positioning rods 8 is perpendicular to the plane formed by the plurality of the above-mentioned first positioning rods 3; the above-mentioned benchmark positioning assembly includes a plurality of third positioning rods 14 arranged on the ring side of the above-mentioned main frame 2, any of the above-mentioned third positioning rods 14 and the above-mentioned first adjusting member 5 are respectively located on both sides of the above-mentioned main frame 2, the plurality of the above-mentioned third positioning rods 14 are arranged in parallel, and the plane formed by the plurality of the above-mentioned third positioning rods 14 is parallel to the plane formed by the plurality of the above-mentioned second positioning rods 8; the above-mentioned main frame 2 is provided with two infrared sights 15, the projection part of any of the above-mentioned infrared sights 15 is facing the bottom of the above-mentioned main frame 2, and the two straight lines projected by the two above-mentioned infrared sights 15 form a plane that is perpendicular to the plane formed by the plurality of the above-mentioned first positioning rods 3 and the plane formed by the plurality of the above-mentioned second positioning rods 8 at the same time.

[0027] When the present application is applied to the installation of bridge guardrail steel bars, a standard line is made on one side of the steel bar installation position along the extension direction of the bridge, so that the distance from any position of the above standard line to the steel bar installation position is the same. The main frame 2 is placed near the standard line and positioned by two infrared sights 15 (the projection points of the two infrared sights 15 both fall on the standard line), ensuring that the free end of the first positioning rod 3 (the end away from the first adjustment member 5), the free end of the second positioning rod 8 (the end away from the second adjustment member 9) and the free end of the third positioning rod 14 (the end away from the main frame 2) are all facing the steel bar installation position; after the main frame 2 is positioned, vertical steel bars are installed opposite the steel bar installation position of the free end of the third positioning rod 14 as a benchmark. The benchmark type vertical steel bars must be in contact with the free end of the third positioning rod 14 during installation, which not only realizes the benchmark type vertical steel bars. Accurate positioning also ensures that the value of the steel bar protection layer is constant. Multiple benchmark type vertical steel bars can be positioned along the extension direction of the bridge; after the benchmark type vertical steel bars are determined, another type of vertical steel bars are positioned between adjacent benchmark type vertical steel bars for reinforcement, hereinafter referred to as reinforced vertical steel bars, and horizontal installation is also required; the main frame 2 is placed near the standard line and positioned by two infrared sights 15, the third positioning rod 14 is connected to the benchmark type vertical steel bar, the first adjustment member 5 drives multiple first positioning rods 3 to extend between adjacent benchmark types, and reinforced vertical steel bars are installed on the same side of multiple first positioning rods 3, respectively, to achieve equidistant distribution of vertical steel bars. The second adjustment member 9 drives the second positioning rod 8 to extend between two adjacent benchmark type vertical steel bars, and horizontal steel bars are installed on the same side of multiple second positioning rods 8, respectively, to achieve equidistant distribution of multiple horizontal steel bars. The utility model solves the problem that when traditional steel bars are installed, both vertical steel bars and horizontal steel bars are manually measured and positioned, and the installation spacing of vertical steel bars, the installation spacing of multiple horizontal steel bars and the steel bar protection layer are inaccurate.

[0028] Example 2

[0029] Please refer to Figure 1 and Figure 2 This embodiment is the same as the embodiment 1 in main body, and the main difference is that a plurality of first positioning rods 3 are arranged in parallel along the transverse direction of the main frame 2, and the main frame 2 is provided with a transversely arranged first level ruler 6.

[0030] In the above embodiment, the first level ruler 6 can detect whether the main frame 2 is in a horizontal position, so as to achieve horizontal adjustment of the main frame 2 .

[0031] In some embodiments of the present invention, the main frame 2 is provided with a second horizontal ruler 13 arranged vertically.

[0032] In the above embodiment, the second horizontal ruler 13 can detect whether the main frame 2 is in a vertical position, so as to achieve vertical adjustment of the main frame 2 .

[0033] In some embodiments of the present invention, a positive four-wheel traveling mechanism 1 is provided on the bottom side of the main frame 2 .

[0034] In the above embodiment, the positive four-wheel walking mechanism 1 can realize the rolling of the main frame 2, which is convenient for the sliding of the present application.

[0035] Furthermore, the positive four-wheel travel mechanism 1 is composed of four universal wheels, which is convenient for adjusting the direction of movement of the present application.

[0036] In some embodiments of the present utility model, a plurality of height adjustment structures are provided around the lower part of the main frame 2;

[0037] Any of the above-mentioned height adjustment structures includes two adjusting nuts 11 arranged on the above-mentioned main frame 2, and the two adjusting nuts 11 are arranged at intervals along the vertical direction of the above-mentioned main frame 2. The two adjusting nuts 11 are jointly penetrated by a threaded rod 10, and the bottom of the above-mentioned threaded rod 10 can extend to the bottom of the above-mentioned main frame 2, and a support plate 12 is arranged on the bottom side of the above-mentioned threaded rod 10.

[0038] In the above embodiment, the threaded rod 10 and the support plate 12 cooperate to support the main frame 2, and after the threaded rod 10 and the adjusting nut 11 are threadedly matched, the height of the main frame 2 can be adjusted, which is more practical.

[0039] In some embodiments of the present invention, the number of the vertical steel bar positioning components is two, and the two vertical steel bar positioning components are arranged at intervals along the vertical direction of the main frame 2.

[0040] In the above embodiment, the two vertical steel bar positioning components can realize the upper and lower positioning of the reinforced vertical steel bars, thereby improving the accuracy of the positioning of the reinforced vertical steel bars.

[0041] In some embodiments of the present invention, the main frame 2 is provided with first cylinders 4 having the same number as the first positioning rods 3 , and the plurality of first positioning rods 3 are respectively slidably matched with the plurality of first cylinders 4 .

[0042] In the above embodiment, the sliding cooperation between the first positioning rod 3 and the first cylinder 4 can realize the stable sliding of the first positioning rod 3 and the main frame 2 .

[0043] In some embodiments of the present invention, the main frame 2 is provided with second cylinders 7 having the same number as the second positioning rods 8 , and the plurality of second positioning rods 8 are respectively slidably matched with the plurality of second cylinders 7 .

[0044] In the above embodiment, the sliding cooperation between the second positioning rod 8 and the second cylinder 7 can realize the stable sliding of the second positioning rod 8 and the main frame 2 .

[0045] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may be subject to various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A positioning stand for bridge concrete guardrail steel bars, characterized in that: It includes a main frame, a vertical steel bar positioning assembly, a horizontal steel bar positioning assembly and a benchmark positioning assembly; The vertical steel bar positioning assembly comprises a plurality of first positioning rods arranged in parallel, any of the first positioning rods is slidably matched with the main frame, and the spacing between any adjacent first positioning rods is equal, and the same side of the plurality of first positioning rods is commonly connected with a first adjusting member; The horizontal steel bar positioning assembly includes a plurality of second positioning rods arranged in parallel, any of the second positioning rods is slidably matched with the main frame, and the spacing between any adjacent second positioning rods is equal, a second adjustment member is commonly connected to the same side of the plurality of second positioning rods, the second adjustment member and the first adjustment member are both located on the same side of the main frame, any of the second positioning rods is parallel to any of the first positioning rods, and a plane formed by the plurality of second positioning rods is perpendicular to a plane formed by the plurality of first positioning rods; The pole positioning assembly includes a plurality of third positioning rods arranged on the ring side of the main frame, any of the third positioning rods and the first adjusting member are respectively located on both sides of the main frame, the plurality of third positioning rods are arranged in parallel, and the plane formed by the plurality of third positioning rods is parallel to the plane formed by the plurality of second positioning rods; The main frame is provided with two infrared sights, and the projection part of any one of the infrared sights faces the bottom of the main frame. The two straight lines projected by the two infrared sights form a plane that is perpendicular to the plane formed by the multiple first positioning rods and the plane formed by the multiple second positioning rods.

2. A positioning stand for bridge concrete guardrail steel bars according to claim 1, characterized in that: A plurality of the first positioning rods are arranged in parallel along the transverse direction of the main frame, and the main frame is provided with a first horizontal ruler arranged transversely.

3. A positioning stand for bridge concrete guardrail reinforcement according to claim 2, characterized in that: The main frame is provided with a second horizontal ruler arranged vertically.

4. A positioning stand for bridge concrete guardrail reinforcement according to claim 3, characterized in that: A positive four-wheel walking mechanism is arranged on the bottom side of the main frame.

5. A positioning stand for bridge concrete guardrail reinforcement according to claim 4, characterized in that: A plurality of height adjustment structures are arranged around the lower part of the main frame; Any of the height adjustment structures includes two adjusting nuts arranged on the main frame, the two adjusting nuts are arranged at intervals along the vertical direction of the main frame, and the two adjusting nuts are jointly penetrated by a threaded rod, the bottom of the threaded rod can extend to the bottom of the main frame, and a support plate is arranged on the bottom side of the threaded rod.

6. A positioning stand for bridge concrete guardrail reinforcement according to claim 1, characterized in that: The number of the vertical steel bar positioning assemblies is two, and the two vertical steel bar positioning assemblies are arranged at intervals along the vertical direction of the main frame.

7. A positioning stand for bridge concrete guardrail reinforcement according to claim 1, characterized in that: The main frame is provided with first cylinders having the same number as the first positioning rods, and the plurality of first positioning rods are respectively slidably matched with the plurality of first cylinders.

8. A positioning stand for bridge concrete guardrail reinforcement according to claim 7, characterized in that: The main frame is provided with second cylinders having the same number as the second positioning rods, and the plurality of second positioning rods are respectively slidably matched with the plurality of second cylinders.

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