Rotary steel bar protective layer thickness detection ruler

Abstract

A rotary steel bar protective layer thickness detection ruler comprises an outer sleeve and an inner rotating rod which is sleeved with the outer sleeve and rotates around the axis direction of the outer sleeve, a scale indicating dial and a first detection plate are arranged on the outer sleeve, an indicating plate and a second detection plate are arranged on the inner rotating rod, the indicating plate is located above the scale indicating dial, and the second detection plate is located above the first detection plate. The distance meter is matched with the scale indicating dial and is used for converting the distance between the first detection plate and the second detection plate into the reading of the scale indicating dial; compared with the prior art, the distance between a reinforcing steel bar surface and a template surface is confirmed through the first detection plate and the second detection plate, and distance data is converted and read through the indicator plate and the scale indicator dial, so that a detector can accurately measure the thickness of a reinforcing steel bar protective layer when the detection ruler is parallel to the template surface; meanwhile, the detection ruler is simple in structure and convenient to operate, and can reduce the working intensity of detection personnel when measuring the thickness of the steel bar protective layer.

Description

Technical Field

[0001] The utility model relates to the technical field of steel bar protection layer thickness detection, in particular to a rotary steel bar protection layer thickness detection ruler. Background Art

[0002] The thickness of the steel bar protective layer refers to the minimum distance from the outermost steel bar surface of the structure to the formwork. It is an important indicator for the quality inspection of civil engineering structures. It is directly related to the durability and safety of the structure and requires high measurement accuracy. When inspectors use conventional rulers such as steel rulers to measure, due to the obstruction of steel bars and limited space, the line of sight cannot be perpendicular to the ruler surface; and because the steel bar is a round surface, the inspection ruler cannot be close to it, resulting in large reading errors and the inability to accurately control the thickness of the protective layer, which in turn affects the quality of the structure.

[0003] To solve the above problems, Chinese patent application number 202022555762.1 discloses a steel bar protective layer thickness detection ruler. The above disclosed steel bar protective layer thickness detection ruler displays the relative displacement between the inner tube and the outer tube, avoiding the measurement reading error caused by the line of sight angle deviation of the conventional ruler in a limited space, so as to improve the measurement accuracy and reduce the workload of the inspection personnel. The above steel bar protective layer thickness detection ruler can only be implemented when the measurement direction is perpendicular to the template surface. It is impossible to measure the thickness of the steel bar protective layer when the detection ruler is parallel to the template surface. Utility Model Content

[0004] In view of the above shortcomings, the technical problem to be solved by the utility model is to provide a rotary steel bar protection layer thickness detection ruler, which can measure the thickness of the steel bar protection layer when the detection ruler is parallel to the template surface.

[0005] In order to solve the above technical problems, the technical solution adopted by the utility model is: a rotary steel bar protective layer thickness detection ruler, including an outer sleeve, and an inner rotating rod which is sleeved in the outer sleeve and rotates around the axis direction of the outer sleeve; a scale indicator disk and a first detection plate are arranged on the outer sleeve, and an indicator plate and a second detection plate are arranged on the inner rotating rod; the indicator plate is located above the scale indicator disk and cooperates with the scale indicator disk to convert the distance between the first detection plate and the second detection plate into the reading of the scale indicator disk.

[0006] As a preferred solution of the utility model, oppositely arranged reading windows and detection windows are formed at both ends of the outer sleeve respectively; the lengths of the reading window and the detection window in the radial direction of the outer sleeve are consistent.

[0007] As a preferred solution of the utility model, the first detection plate is fixed on one side of the outer sleeve close to the detection window; when the second detection plate on the inner rotating rod rotates toward the first detection plate on the outer sleeve, the second detection plate fits the first detection plate.

[0008] As a preferred solution of the utility model, the horizontal distances from one end of the first detection plate away from the outer sleeve and one end of the second detection plate away from the inner rotating rod to the axis of the inner rotating rod are equal.

[0009] As a preferred solution of the utility model, the indicator plate is located in the reading window, and the second detection plate is located in the detection window; the indicator plate and the second detection plate are aligned in the circumferential direction of the inner rotating rod.

[0010] As a preferred solution of the utility model, the indicator plate and the second detection plate are perpendicular to the inner rotating rod, and the first detection plate is perpendicular to the outer sleeve.

[0011] As a preferred solution of the utility model, the scale indicator disk is fan-shaped, and the inner arc length of the scale indicator disk is equal to the outer arc length of the reading window.

[0012] As a preferred solution of the utility model, the scale indicator disk is located at the lower side of the reading window, and the scale indicator disk is perpendicular to the indicator plate and the outer sleeve respectively.

[0013] As a preferred solution of the utility model, damping oil is applied between the outer sleeve and the inner rotating rod.

[0014] Compared with the prior art, the beneficial effects of the utility model are: the distance between the steel bar surface and the template surface is confirmed by the first detection plate and the second detection plate, and the distance data is then converted and read by the indicator plate and the scale indicator dial, so that the detection personnel can accurately measure the thickness of the steel bar protective layer when the detection ruler is parallel to the template surface; at the same time, the detection ruler has a simple structure and is easy to operate, which can reduce the work intensity of the detection personnel when measuring the thickness of the steel bar protective layer. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A schematic diagram of the structure of a rotary steel bar protective layer thickness detection ruler provided in an embodiment of the present application;

[0016] Figure 2 A front view of an outer sleeve provided in an embodiment of the present application;

[0017] Figure 3 A side view of an outer sleeve provided in an embodiment of the present application;

[0018] Figure 4 A front view of the inner rotating rod provided in an embodiment of the present application;

[0019] Figure 5 A side view of the inner rotating rod provided in an embodiment of the present application;

[0020] Figure numerals: outer sleeve 1, scale indicator plate 1-1, first detection plate 1-2, reading window 1-3, detection window 1-4, inner rotating rod 2, indicator plate 2-1, second detection plate 2-2. DETAILED DESCRIPTION

[0021] The technical solutions 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.

[0022] The following description provides examples and does not limit the scope, applicability or examples set forth in the claims. Changes may be made to the functions and arrangements of the elements described without departing from the scope of the present application. Various processes or components may be appropriately omitted, substituted or added to each example. For example, the described method may be performed in an order different from the order described, and various steps may be added, omitted or combined. In addition, features described in some examples may be combined in other examples.

[0023] See also Figure 1 , Figure 1 The structure diagram of a rotary steel bar protective layer thickness detection ruler provided in the embodiment of the present application is shown. Figure 1 As shown, a rotary steel bar protective layer thickness detection ruler comprises an outer sleeve 1, and an inner rotating rod 2 which is sleeved in the outer sleeve 1 and rotates around the axis direction of the outer sleeve 1; a scale indicator disk 1-1 and a first detection plate 1-2 are arranged on the outer sleeve 1, and an indicator plate 2-1 and a second detection plate 2-2 are arranged on the inner rotating rod 2; the indicator plate 2-1 is located above the scale indicator disk 1-1, cooperates with the scale indicator disk 1-1, and is used to convert the distance between the first detection plate 1-2 and the second detection plate 2-2 into the reading of the scale indicator disk 1-1.

[0024] Specifically, the scale indicator disk 1-1 and the first detection plate 1-2 are both arranged on the outer circumferential surface of the outer sleeve 1, the indicator plate 2-1 and the second detection plate 2-2 are both arranged on the outer circumferential surface of the inner rotating rod 2, the scale indicator disk 1-1 is paired with the indicator plate 2-1, and the first detection plate 1-2 is paired with the second detection plate 2-2; when the inner rotating rod 2 is rotated, the indicator plate 2-1 and the second detection plate 2-2 are rotated at the same angle at the same time, and the rotation angle between the first detection plate 1-2 and the second detection plate 2-2 is obtained by reading the initial angle of the indicator plate 2-1 on the scale indicator disk 1-1 and the rotation angle of the indicator plate 2-1 on the scale indicator disk 1-1; finally, the angle data between the first detection plate 1-2 and the second detection plate 2-2 is converted into the distance data between the first detection plate 1-2 and the second detection plate 2-2 through the cosine theorem, that is, the distance data between the steel bar surface and the template surface.

[0025] As an optional embodiment of the present application, oppositely arranged reading windows 1-3 and detection windows 1-4 are formed at both ends of the outer sleeve 1; the lengths of the reading windows 1-3 and the detection windows 1-4 in the radial direction of the outer sleeve 1 are consistent.

[0026] See here Figure 2 The front view of the outer sleeve provided by the embodiment of the present application is shown. Figure 2 As shown, specifically, the length of the reading window 1-3 in the radial direction of the outer sleeve 1 is used to limit the range of motion of the indicator plate 2-1, and the length of the detection window 1-4 in the radial direction of the outer sleeve 1 is used to limit the range of motion of the second detection plate 2-2.

[0027] As an optional embodiment of the present application, the first detection plate 1-2 is fixed on one side of the outer sleeve 1 close to the detection window 1-4; when the second detection plate 2-2 on the inner rotating rod 2 rotates toward the first detection plate 1-2 on the outer sleeve 1, the second detection plate 2-2 fits with the first detection plate 1-2.

[0028] See here Figure 1 The structure diagram of a rotary steel bar protective layer thickness detection ruler provided by the embodiment of the present application is shown. Figure 1 As shown, specifically, the first detection plate 1-2 and the second detection plate 2-2 are located in the same circumferential direction, the first detection plate 1-2 is the starting point of measurement, and the second detection plate 2-2 moves in the detection window 1-4; when the first detection plate 1-2 and the second detection plate 2-2 are in contact with each other, this is the initial measurement position of the detection ruler.

[0029] As an option in an embodiment of the present application, the horizontal distances from one end of the first detection plate 1-2 away from the outer sleeve 1 and the horizontal distances from one end of the second detection plate 2-2 away from the inner rotating rod 2 to the axis of the inner rotating rod 2 are equal.

[0030] See here Figure 1 The structure diagram of a rotary steel bar protective layer thickness detection ruler provided by the embodiment of the present application is shown. Figure 1 As shown, specifically, the end of the first inspection plate 1-2 and the end of the second inspection plate 2-2 are in contact with the steel bar surface and the template surface respectively. When the horizontal distances from the end of the first inspection plate 1-2 and the end of the second inspection plate 2-2 to the axis of the inner turning rod 2 are equal, the distance between the end of the first inspection plate 1-2 and the end of the second inspection plate 2-2 is the thickness of the steel bar protective layer; when the horizontal distances from the end of the first inspection plate 1-2 and the end of the second inspection plate 2-2 to the axis of the inner turning rod 2 are not equal, the distance between the end of the first inspection plate 1-2 and the end of the second inspection plate 2-2 is greater than the thickness of the steel bar protective layer.

[0031] As an optional embodiment of the present application, the indicator plate 2-1 is located in the reading window 1-3, and the second detection plate 2-2 is located in the detection window 1-4; the indicator plate 2-1 and the second detection plate 2-2 are aligned in the circumferential direction of the inner rotating rod 2.

[0032] like Figure 1 and Figure 2 As shown, specifically, when the deflection angles of the indicator plate 2-1 and the second detection plate 2-2 arranged on the inner rotating rod 2 are consistent, the inner rotating rod 2 is rotated, and the indicator plate 2-1 and the second detection plate 2-2 on the inner rotating rod 2 pass through the same angle, and the rotation angle of the second detection plate 2-2 is obtained by reading the rotation angle of the indicator plate 2-1.

[0033] As an option in the embodiment of the present application, the indicator plate 2 - 1 and the second detection plate 2 - 2 are perpendicular to the inner rotating rod 2 , and the first detection plate 1 - 2 is perpendicular to the outer sleeve 1 .

[0034] See here Figure 1 The structure diagram of a rotary steel bar protective layer thickness detection ruler provided by the embodiment of the present application is shown. Figure 1 As shown, specifically, the planes where the indicator plate 2-1, the first detection plate 1-2 and the second detection plate 2-2 are located are parallel to the axial plane of the inner rotating rod 2, so as to reduce the difficulty of reading data and eliminate some system errors generated when reading data.

[0035] As an option in an embodiment of the present application, the scale indicator disk 1-1 is fan-shaped, and the inner arc length of the scale indicator disk 1-1 is equal to the outer arc length of the reading window 1-3.

[0036] See here Figure 1 The structure diagram of a rotary steel bar protective layer thickness detection ruler provided by the embodiment of the present application is shown. Figure 1 As shown, specifically, the axis of the scale indicator disk 1-1 coincides with the axis of the inner rotating rod 2, ensuring that the angle read by the scale on the scale indicator disk 1-1 is consistent with the actual rotation angle of the first detection plate 1-2, eliminating the error caused by the misalignment of the axes.

[0037] As an option in the embodiment of the present application, the scale indicator disk 1-1 is located at the lower side of the reading window 1-3, and the scale indicator disk 1-1 is perpendicular to the indicator plate 2-1 and the outer sleeve 1 respectively.

[0038] See here Figure 1 The structure diagram of a rotary steel bar protective layer thickness detection ruler provided by the embodiment of the present application is shown. Figure 1 As shown, specifically, the indicator plate 2-1 is perpendicular to the scale indicator disk 1-1, and the indicator plate 2-1 is located above the scale indicator disk 1-1, which reduces the difficulty for the inspector to read the data and facilitates data reading.

[0039] As an option in the embodiment of the present application, damping oil is applied between the outer sleeve 1 and the inner rotating rod 2 .

[0040] Specifically, the damping oil lubricates and reduces vibrations of the outer sleeve 1 and the inner rotating rod 2 that are in contact with each other, thereby increasing the service life of the detection ruler.

[0041] In actual use, the end where the detection window 1-4 is located on the detection ruler is inserted into the steel bar protective layer whose thickness is to be measured; when the axis of the detection ruler is parallel to the steel bar surface and the template surface, fix the outer sleeve 1 and rotate the inner rotating rod 2 until the end of the first detection plate 1-2 and the end of the second detection plate 2-2 are respectively in contact with the steel bar surface and the template surface; at this time, the angle data is read through the indicator plate 2-1 and the scale indicator disk 1-1, and then the cosine theorem is used to calculate the thickness of the steel bar protective layer according to the angle data and the length data of the first detection plate 1-2 and the second detection plate 2-2 to complete the measurement of the thickness of the steel bar protective layer.

[0042] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention; therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

[0043] Although the following terms are used more frequently in this article: outer sleeve 1, scale indicator plate 1-1, first detection plate 1-2, reading window 1-3, detection window 1-4, inner rotating rod 2, indicator plate 2-1, second detection plate 2-2, etc., the possibility of using other terms is not excluded. These terms are used only to more conveniently describe and explain the essence of the utility model; interpreting them as any additional restrictions is contrary to the spirit of the utility model.

Claims

1. A rotary steel bar protective layer thickness detection ruler, characterized in that: It comprises an outer sleeve (1), and an inner rotating rod (2) which is sleeved inside the outer sleeve (1) and rotates around the axis of the outer sleeve (1); The outer sleeve (1) is provided with a graduated indicator disk (1-1) and a first detection plate (1-2), and the inner rotating rod (2) is provided with an indicator plate (2-1) and a second detection plate (2-2); the indicator plate (2-1) is located above the graduated indicator disk (1-1) and cooperates with the graduated indicator disk (1-1) to convert the distance between the first detection plate (1-2) and the second detection plate (2-2) into a reading of the graduated indicator disk (1-1).

2. A rotary steel bar protective layer thickness detection ruler according to claim 1, characterized in that: The outer sleeve (1) has two ends formed with a reading window (1-3) and a detection window (1-4) arranged opposite to each other; the reading window (1-3) and the detection window (1-4) have the same length in the radial direction of the outer sleeve (1).

3. The rotary steel bar protective layer thickness detection ruler according to claim 1 is characterized in that: The first detection plate (1-2) is fixedly arranged on a side of the outer sleeve (1) close to the detection window (1-4); when the second detection plate (2-2) on the inner rotating rod (2) rotates towards the first detection plate (1-2) on the outer sleeve (1), the second detection plate (2-2) fits the first detection plate (1-2).

4. The rotary steel bar protective layer thickness detection ruler according to claim 3 is characterized in that: The horizontal distances from one end of the first detection plate (1-2) away from the outer sleeve (1) and one end of the second detection plate (2-2) away from the inner rotating rod (2) to the axis of the inner rotating rod (2) are equal.

5. The rotary steel bar protective layer thickness detection ruler according to claim 1 is characterized in that: The indicator plate (2-1) is located in the reading window (1-3), and the second detection plate (2-2) is located in the detection window (1-4); the indicator plate (2-1) and the second detection plate (2-2) are aligned in the circumferential direction of the inner rotating rod (2).

6. The rotary steel bar protective layer thickness detection ruler according to claim 1 is characterized in that: The indicator plate (2-1) and the second detection plate (2-2) are perpendicular to the inner rotating rod (2), and the first detection plate (1-2) is perpendicular to the outer sleeve (1).

7. The rotary steel bar protective layer thickness detection ruler according to claim 1 is characterized in that: The scale indicator disk (1-1) is fan-shaped, and the inner arc length of the scale indicator disk (1-1) is equal to the outer arc length of the reading window (1-3).

8. The rotary steel bar protective layer thickness detection ruler according to claim 1 is characterized in that: The scale indicator disk (1-1) is located at the lower side of the reading window (1-3), and the scale indicator disk (1-1) is respectively perpendicular to the indicator plate (2-1) and the outer sleeve (1).

9. The rotary steel bar protective layer thickness detection ruler according to claim 1 is characterized in that: Damping oil is applied between the outer sleeve (1) and the inner rotating rod (2).

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