Detection caliper for prefabricated T-beam steel bar protection layer

Abstract

The utility model discloses a detection caliper for a prefabricated T-beam steel bar protection layer. The detection caliper comprises an operation plate, two ends of the operation plate are respectively provided with a measuring plate extending towards the same direction, and the top surfaces of the two measuring plates and the top surface of the operation plate are in the same plane. The two opposite inner side faces of the two measuring plates form measuring faces used for making contact with the outer surface of T-beam concrete of a prefabricated T-beam steel bar protection layer and the edge of steel bars on the outermost side of a steel bar framework respectively. According to the method, the technical problems that the operation is time-saving, labor-saving and visual, and meanwhile, the misjudgment probability is effectively reduced are solved.

Description

Technical Field

[0001] The present application relates to the field of bridge engineering construction, and in particular to a caliper for detecting the protective layer of steel bars of prefabricated T-beams. Background Art

[0002] The concrete cover is one of the most critical indicators to ensure the durability of the precast T-beam structure. The concrete cover of the precast T-beam refers to the net distance from the outer surface of the T-beam concrete to the edge of the outermost steel bar of the steel skeleton.

[0003] In the current bridge quality inspection and assessment standards, the allowable deviation of the concrete cover of precast T-beams is only ±5mm, which puts higher requirements on the pre-construction inspection of the steel skeleton cover. Due to the large amount of T-beam steel works and the wide range of areas, the traditional operation is to measure the skeleton size with a tape measure to calculate the thickness of the cover for inspection, which is time-consuming, labor-intensive, unintuitive, and easy to cause misjudgment.

[0004] Currently, no effective solution has been proposed to address the problems in related technologies, such as being time-consuming, labor-intensive, non-intuitive, and prone to misjudgment. Summary of the invention

[0005] The main purpose of the present application is to provide a caliper for detecting the protective layer of the steel bars of prefabricated T-beams, so as to solve the problems of being time-consuming, labor-intensive, non-intuitive, and prone to misjudgment.

[0006] In order to achieve the above-mentioned purpose, according to one aspect of the present application, a caliper for detecting the protective layer of the steel bars of a prefabricated T-beam is provided.

[0007] The detection caliper for the prefabricated T-beam steel bar protective layer according to the present application includes: an operating plate, a measuring plate extending in the same direction is arranged at each end of the operating plate, the top surfaces of the two measuring plates are in the same plane as the top surfaces of the operating plates, and the two opposite inner side surfaces of the two measuring plates form measuring surfaces for respectively contacting the outer surface of the T-beam concrete of the prefabricated T-beam steel bar protective layer and the outermost steel bar edge of the steel bar skeleton.

[0008] Furthermore, the two measuring plates are perpendicular to the operating plate.

[0009] Furthermore, the measuring surface is an inclined surface that is inclined outward from one end of the measuring surface close to the operating panel to one end of the measuring surface far from the operating panel.

[0010] Furthermore, the two measuring surfaces are vertical surfaces that are perpendicular to the operating panel and parallel to each other.

[0011] Furthermore, the measuring surface includes: a first measuring surface, and a second measuring surface connected to the end of the first measuring surface, the first measuring surface is an inclined surface inclined outward from one end of the first measuring surface close to the operating panel to one end of the first measuring surface away from the operating panel, and the second measuring surfaces are vertical surfaces perpendicular to the operating panel and parallel to each other.

[0012] Furthermore, the inclination angles of the two first measuring surfaces are the same.

[0013] Furthermore, the inclination angles of the two measuring surfaces are the same.

[0014] Furthermore, the measuring surface includes: a first measuring surface, a second measuring surface connected to the end of the first measuring surface, and a third measuring surface connected to the end of the second measuring surface, the first measuring surface and the third measuring surface are vertical surfaces perpendicular to the operating panel and parallel to each other, and the second measuring surface is an inclined surface inclined outward from one end of the second measuring surface close to the first measuring surface to one end of the second measuring surface close to the third measuring surface.

[0015] Furthermore, the inclination angles of the two second measuring surfaces are the same.

[0016] Furthermore, the width of one end of the measuring plate close to the operating plate is 10 mm greater than the width of one end of the measuring plate away from the operating plate.

[0017] In an embodiment of the present application, a specially designed caliper is used to detect the protective layer of the prefabricated T-beam steel bars. Through an operating panel, a measuring plate extending in the same direction is arranged at each end of the operating panel, the top surfaces of the two measuring plates are in the same plane as the top surfaces of the operating panels, and the two inner side surfaces opposite to each other of the two measuring plates form measuring surfaces for respectively contacting the outer surface of the T-beam concrete and the outermost steel bar edge of the steel skeleton of the prefabricated T-beam steel bar protective layer; the purpose of using a caliper instead of a tape measure to determine whether the size of the prefabricated T-beam steel bar protective layer meets the requirements is achieved, thereby achieving the technical effect of saving time and effort in operation, being very intuitive, and effectively reducing the probability of misjudgment, thereby solving the technical problem of saving time and effort in operation, being very intuitive, and effectively reducing the probability of misjudgment. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings constituting a part of this application are used to provide a further understanding of this application, so that other features, purposes and advantages of this application become more obvious. The schematic embodiment drawings and their descriptions of this application are used to explain this application and do not constitute an improper limitation on this application. In the drawings:

[0019] Figure 1 It is a schematic structural diagram of a detection caliper for a prefabricated T-beam reinforcement protective layer according to a preferred embodiment of the present application;

[0020] Figure 2 This is a schematic diagram of the structure of a detection caliper for the protective layer of the steel bars of a prefabricated T-beam according to an optional embodiment of the present application;

[0021] Figure 3 is a schematic structural diagram of a caliper for detecting the protective layer of steel bars of a prefabricated T-beam according to another optional embodiment of the present application;

[0022] Figure 4 It is a structural schematic diagram of a detection caliper for the protective layer of the reinforcement bars of prefabricated T-beams according to yet another optional embodiment of the present application.

[0023] Reference numerals

[0024] 1. Operation panel; 2. Measuring panel; 3. Measuring surface; 4. Steel bar skeleton. DETAILED DESCRIPTION

[0025] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present application.

[0026] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequential order. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present application described here. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0027] In this application, the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings. These terms are mainly used to better describe the utility model and its embodiments, and are not used to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation.

[0028] In addition, some of the above terms may be used to express other meanings in addition to indicating orientation or positional relationship. For example, the term "on" may also be used to express a certain dependency or connection relationship in some cases. For those skilled in the art, the specific meanings of these terms in this utility model can be understood according to specific circumstances.

[0029] In addition, the terms "installed", "set", "provided with", "connected", "connected", and "socketed" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection, or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, elements, or components. For those of ordinary skill in the art, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0030] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0031] like Figure 1 As shown, the present application relates to a caliper for detecting the protective layer of steel bars of prefabricated T-beams, the caliper comprising: an operating panel 1, a measuring plate 2 extending in the same direction is arranged at each end of the operating panel 1, the top surfaces of the two measuring plates 2 are in the same plane as the top surfaces of the operating panel 1, and the two inner side surfaces of the two measuring plates 2 are opposite to each other to form a measuring surface 3 for contacting the outer surface of the T-beam concrete and the outermost steel bar edge of the steel bar skeleton 4 of the protective layer of the prefabricated T-beam steel bars. During the inspection, the front end of the side panel is horizontally aligned with the steel bar skeleton 4 and inserted until the front left and right side panels are completely stuck and fit the outermost steel bars. The inspection result is determined according to the relative relationship between the steel bars and the side panels: (1) If it cannot be inserted horizontally, the steel bar skeleton 4 is too large in size and the steel bar protective layer is too small, and it is determined to be unqualified. (2) If it can be inserted horizontally, but at least one side of the steel bar skeleton 4 cannot be closely attached to the measuring surface 3 of the left and right side panels and there is a gap, the steel bar skeleton 4 is too small in size and the steel bar protective layer is too large, and it is determined to be unqualified. (3) If it can be inserted horizontally and both sides of the steel skeleton 4 are in close contact with the measuring surfaces 3 of the left and right side plates, the steel skeleton 4 has normal dimensions and the steel bar protective layer is normal, and it is judged to be qualified.

[0032] It should be understood that in order to facilitate personnel operation to achieve qualified detection, in this embodiment, while ensuring that the top surface of the measuring plate 2 and the top surface of the operating plate 1 are in the same plane, it is also necessary to ensure that the measuring plate 2 is perpendicular to the operating plate 1.

[0033] It is also important to understand that the caliper is made of precision cut hard acrylic sheet.

[0034] Preferably, the two measuring surfaces 3 are vertical surfaces perpendicular to the operating panel 1 and parallel to each other. The two vertical surfaces are used as measuring surfaces 3 to detect whether they are qualified when they are attached to the steel bar skeleton 4. If they do not meet the distance between the two vertical surfaces, they are judged as unqualified.

[0035] From the above description, it can be seen that the present application achieves the following technical effects:

[0036] In an embodiment of the present application, a specially designed caliper is used to detect the protective layer of the steel bars of the prefabricated T-beam. Through an operating panel 1, a measuring plate 2 extending in the same direction is arranged at each end of the operating panel 1. The top surfaces of the two measuring plates 2 are in the same plane as the top surface of the operating panel 1, and the two inner side surfaces opposite to each other of the two measuring plates 2 form a measuring surface 3 for contacting the outer surface of the T-beam concrete and the outermost steel bar edge of the steel skeleton 4 of the prefabricated T-beam steel bar protective layer respectively; the purpose of using a caliper instead of a tape measure to determine whether the size of the prefabricated T-beam steel bar protective layer meets the requirements is achieved, thereby achieving the technical effect of saving time and effort in operation, being very intuitive, and effectively reducing the probability of misjudgment, thereby solving the technical problem of saving time and effort in operation, being very intuitive, and effectively reducing the probability of misjudgment.

[0037] like Figure 2 As shown, optionally, the measuring surface 3 is an inclined surface that is inclined outward from one end of the measuring surface 3 close to the operating plate 1 to one end of the measuring surface 3 away from the operating plate 1. Further, the inclination angles of the two measuring surfaces 3 are the same. By using two inclined surfaces that are inclined outward and have the same inclination angle as the measuring surface 3, the two inclined surfaces can adapt to steel bar skeletons 4 of different sizes during detection, thereby realizing the ability to detect the precast T-beam concrete protective layer that changes within the allowable deviation range, further reducing the misjudgment rate.

[0038] Furthermore, the width of the end of the measuring plate 2 close to the operating plate 1 is 10 mm greater than the width of the end of the measuring plate 2 away from the operating plate 1. According to the design size of the steel skeleton 4 and the upper and lower limits of the allowable deviation (generally ±5 mm), it is ensured that the precast T-beam concrete protective layer that varies within ±5 mm can be normally detected as qualified; preferably, the upper limit red line of the protective layer thickness deviation, the design protective layer thickness marking line, and the lower limit red line of the protective layer thickness deviation are marked on the left and right side plates in turn as a warning.

[0039] like Figure 3As shown, optionally, the measuring surface 3 includes: a first measuring surface 3, and a second measuring surface 3 connected to the end of the first measuring surface 3, the first measuring surface 3 is an inclined surface inclined outward from one end of the first measuring surface 3 close to the operating panel 1 to one end of the first measuring surface 3 away from the operating panel 1, and the two second measuring surfaces 3 are vertical surfaces perpendicular to the operating panel 1 and parallel to each other. Further, the inclination angles of the two first measuring surfaces 3 are the same. By using two inclined surfaces inclined outward and with the same inclination angle as the first measuring surface 3, the two inclined surfaces can adapt to steel skeletons 4 of different sizes during detection, thus realizing the detection of the prefabricated T-beam concrete protective layer that changes within the allowable deviation range, and further reducing the misjudgment rate; in addition, by using a vertical surface perpendicular to the operating panel 1 and parallel to each other as the second measuring surface 3, when the steel skeleton 4 reaches the maximum error value, poor fitting may occur, and the fitting effect of the steel skeleton 4 can still be ensured through the vertical surface.

[0040] Furthermore, the width of the end of the measuring plate 2 close to the operating plate 1 is 10 mm greater than the width of the end of the measuring plate 2 away from the operating plate 1. According to the design size of the steel skeleton 4 and the upper and lower limits of the allowable deviation (generally ±5 mm), it is ensured that the precast T-beam concrete protective layer that varies within ±5 mm can be normally detected as qualified; preferably, the upper limit red line of the protective layer thickness deviation, the design protective layer thickness marking line, and the lower limit red line of the protective layer thickness deviation are marked on the left and right side plates in turn as a warning.

[0041] like Figure 4 As shown, optionally, the measuring surface 3 includes: a first measuring surface 3, a second measuring surface 3 connected to the end of the first measuring surface 3, and a third measuring surface 3 connected to the end of the second measuring surface 3, the first measuring surface 3 and the third measuring surface 3 are vertical surfaces perpendicular to the operating panel 1 and parallel to each other, and the second measuring surface 3 is an inclined surface inclined outward from one end of the second measuring surface 3 close to the first measuring surface 3 to one end of the second measuring surface 3 close to the third measuring surface 3. Further, the inclination angles of the two second measuring surfaces 3 are the same. By using two inclined surfaces inclined outward and with the same inclination angle as the second measuring surface 3, the two inclined surfaces can adapt to steel skeletons 4 of different sizes during detection, and thus the precast T-beam concrete protective layer that changes within the allowable deviation range can be detected, further reducing the misjudgment rate; in addition, by using vertical surfaces perpendicular to the operating panel 1 and parallel to each other as the first measuring surface 3 and the second measuring surface 3, when the steel skeleton 4 reaches the maximum error value and the minimum error value, there will be a poor fit, and the fitting effect of the steel skeleton 4 can still be ensured through the vertical surface.

[0042] Furthermore, the width of the end of the measuring plate 2 close to the operating plate 1 is 10 mm greater than the width of the end of the measuring plate 2 away from the operating plate 1. According to the design size of the steel skeleton 4 and the upper and lower limits of the allowable deviation (generally ±5 mm), it is ensured that the precast T-beam concrete protective layer that varies within ±5 mm can be normally detected as qualified; preferably, the upper limit red line of the protective layer thickness deviation, the design protective layer thickness marking line, and the lower limit red line of the protective layer thickness deviation are marked on the left and right side plates in turn as a warning.

[0043] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A caliper for detecting the protective layer of the steel bars of prefabricated T-beams, characterized in that: include: An operating plate (1) is provided at each end of the operating plate (1) with a measuring plate (2) extending in the same direction, the top surfaces of the two measuring plates (2) and the top surface of the operating plate (1) are in the same plane, and the two opposite inner side surfaces of the two measuring plates (2) form measuring surfaces (3) for contacting the outer surface of the T-beam concrete of the prefabricated T-beam steel bar protective layer and the outermost steel bar edge of the steel bar skeleton (4) respectively.

2. The detection caliper for the protective layer of the steel bars of the prefabricated T-beam according to claim 1 is characterized in that: The two measuring plates (2) are perpendicular to the operating plate (1).

3. The detection caliper for the protective layer of the steel bars of the prefabricated T-beam according to claim 1 is characterized in that: The measuring surface (3) is an inclined surface which is inclined outward from one end of the measuring surface (3) close to the operating panel (1) to one end of the measuring surface (3) away from the operating panel (1).

4. The detection caliper for the protective layer of the steel bars of prefabricated T-beams according to claim 1 is characterized in that: The two measuring surfaces (3) are vertical surfaces that are perpendicular to the operating panel (1) and parallel to each other.

5. The detection caliper for the protective layer of the steel bars of prefabricated T-beams according to claim 1 is characterized in that: The measuring surface (3) comprises: a first measuring surface (3), and a second measuring surface (3) connected to the end of the first measuring surface (3), the first measuring surface (3) being an inclined surface inclined outwardly from an end of the first measuring surface (3) close to the operating panel (1) to an end of the first measuring surface (3) far from the operating panel (1), and the two second measuring surfaces (3) are vertical surfaces perpendicular to the operating panel (1) and parallel to each other.

6. The detection caliper for the protective layer of the steel bars of the prefabricated T-beam according to claim 5 is characterized in that: The inclination angles of the two first measuring surfaces (3) are the same.

7. The caliper for detecting the protective layer of the steel bars of prefabricated T-beams according to claim 3 is characterized in that: The inclination angles of the two measuring surfaces (3) are the same.

8. The caliper for detecting the protective layer of the steel bars of prefabricated T-beams according to claim 1 is characterized in that: The measuring surface (3) comprises: a first measuring surface (3), a second measuring surface (3) connected to the end of the first measuring surface (3), and a third measuring surface (3) connected to the end of the second measuring surface (3), the first measuring surface (3) and the third measuring surface (3) being vertical surfaces perpendicular to the operating panel (1) and parallel to each other, and the second measuring surface (3) being an inclined surface inclined outwardly from an end of the second measuring surface (3) close to the first measuring surface (3) to an end of the second measuring surface (3) close to the third measuring surface (3).

9. The caliper for detecting the protective layer of the steel bars of prefabricated T-beams according to claim 8, characterized in that: The inclination angles of the two second measuring surfaces (3) are the same.

10. The detection caliper for the protective layer of the steel bars of prefabricated T-beams according to claim 3, 5 or 8, characterized in that: The width of the end of the measuring plate (2) close to the operating plate (1) is 10 mm greater than the width of the end of the measuring plate (2) away from the operating plate (1).

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