Scissor fork type reinforcing steel bar protective layer thickness detection ruler

Abstract

A shear fork type steel bar protective layer thickness detection ruler comprises an inner sleeve rod, an outer sleeve and a shear fork type telescopic assembly, the inner sleeve rod is sleeved with the outer sleeve and abuts against the shear fork type telescopic assembly arranged at the end of the outer sleeve, and the inner sleeve rod moves in the length direction of the outer sleeve and drives the shear fork type telescopic assembly to move. The thickness of the reinforcement protection layer is measured; compared with the prior art, the distance between a reinforcing steel bar surface and a template surface and the moving distance of the inner sleeve rod are converted through the shear fork type telescopic assembly, 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, and meanwhile, the detection ruler is simple in structure, convenient to operate and high in practicability. And the working intensity of detection personnel when measuring the thickness of the steel bar protective layer can be reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of steel bar protection layer thickness detection, in particular to a scissor-type 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 scissor-type steel bar protective layer thickness detection ruler, which can measure the thickness of the steel bar protective 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 scissors-type steel bar protective layer thickness detection ruler, including an inner sleeve rod, an outer sleeve and a scissors-type telescopic assembly; the inner sleeve rod is sleeved in the outer sleeve and abuts against the scissors-type telescopic assembly arranged at the end of the outer sleeve; the inner sleeve rod moves along the length direction of the outer sleeve and drives the scissors-type telescopic assembly to move, so as to measure the thickness of the steel bar protective layer.

[0006] As a preferred solution of the utility model, a reading indicator line is formed on the outer circumferential surface of the inner sleeve rod, and the reading indicator line is perpendicular to the movement direction of the inner sleeve rod.

[0007] As a preferred solution of the utility model, a plurality of limiting grooves arranged along the length direction of the inner sleeve rod are formed on the inner sleeve rod.

[0008] As a preferred solution of the utility model, a pointed structure is formed at the end of the inner sleeve rod, and the pointed structure is located at the abutment between the inner sleeve rod and the scissor-type telescopic assembly.

[0009] As a preferred solution of the utility model, a reading window and a detection window are respectively formed at both ends of the outer sleeve; and the scissor-type telescopic assembly is arranged at the detection window.

[0010] As a preferred solution of the utility model, indicating scales are formed on both sides of the reading window, and the indicating range of the indicating scales is greater than or equal to the length of the limiting groove.

[0011] As a preferred solution of the utility model, a plurality of limiting holes arranged along the length direction of the outer sleeve are formed on the outer sleeve; the limiting holes and the limiting grooves are arranged correspondingly.

[0012] As a preferred solution of the utility model, the scissors-type telescopic assembly includes two rotating measuring blocks arranged in an X-shaped structure; the two rotating measuring blocks are connected by a pin shaft, and the pin shaft is arranged in the middle of the two rotating measuring blocks; a tension spring is arranged between the adjacent ends of the two rotating measuring blocks away from the inner sleeve rod.

[0013] As a preferred solution of the utility model, one end of the inner sleeve rod away from the scissor-type telescopic assembly extends out of the outer sleeve, and the extension length is greater than the length of the limiting groove.

[0014] As a preferred solution of the utility model, damping oil is applied between the inner sleeve rod and the outer sleeve.

[0015] Compared with the prior art, the utility model has the following beneficial effects: the distance between the steel bar surface and the template surface is converted with the moving distance of the inner sleeve rod through the scissor-type telescopic assembly, so that the inspector can accurately measure the thickness of the steel bar protective layer when the inspection ruler is parallel to the template surface; at the same time, the inspection ruler has a simple structure and is easy to operate, which can reduce the work intensity of the inspector when measuring the thickness of the steel bar protective layer. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A schematic diagram of the structure of a scissor-type steel bar protective layer thickness detection ruler provided in an embodiment of the present application;

[0017] Figure 2 A schematic diagram of the structure of a scissor-type steel bar protective layer thickness detection ruler provided in an embodiment of the present application;

[0018] Figure 3 A front view of a scissor-type steel bar protective layer thickness detection ruler provided in an embodiment of the present application;

[0019] Figure 4 A side view of a scissor-type steel bar protective layer thickness detection ruler provided in an embodiment of the present application;

[0020] Figure 5 A schematic diagram of the structure of the inner sleeve rod provided in an embodiment of the present application;

[0021] Figure numerals: inner sleeve 1, reading indication line 1-1, limiting groove 1-2, pointed structure 1-3, outer sleeve 2, reading window 2-1, indicating scale 2-11, detection window 2-2, limiting hole 2-3, scissor-type telescopic assembly 3, rotating measuring block 3-1. DETAILED DESCRIPTION

[0022] 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.

[0023] 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.

[0024] See also Figure 1 , Figure 1 The schematic diagram of the structure of a scissor-type steel bar protective layer thickness detection ruler provided in the embodiment of the present application is shown. Figure 1 As shown, a scissor-type steel bar protective layer thickness detection ruler comprises an inner sleeve rod 1, an outer sleeve 2 and a scissor-type telescopic assembly 3; the inner sleeve rod 1 is sleeved in the outer sleeve 2 and abuts against the scissor-type telescopic assembly 3 arranged at the end of the outer sleeve 2; the inner sleeve rod 1 moves along the length direction of the outer sleeve 2 and drives the scissor-type telescopic assembly 3 to move, so as to measure the thickness of the steel bar protective layer.

[0025] Specifically, when measuring the thickness of the steel bar protective layer between the steel bar surface and the template surface, one end of the thickness measuring ruler provided with the scissor-type telescopic assembly 3 is placed between the steel bar surface and the template surface; the inspector pushes the inner sleeve rod 1 so that the inner sleeve rod 1 squeezes the scissor-type telescopic assembly 3, and the scissor-type telescopic assembly 3 moves along the radial direction of the outer sleeve 2 under the action of the inner sleeve rod 1 until the two ends of the scissor-type telescopic assembly 3 abut against the steel bar surface and the template surface respectively. At this time, the moving distance of the scissor-type telescopic assembly 3 is positively correlated with the moving distance of the inner sleeve rod 1, and the inspector can know the thickness of the steel bar protective layer by obtaining the moving distance of the inner sleeve rod 1.

[0026] Furthermore, the axes of the inner sleeve rod 1, the outer sleeve 2 and the scissor-type telescopic assembly 3 are aligned with each other.

[0027] As an optional embodiment of the present application, a reading indicator line 1 - 1 is formed on the outer circumferential surface of the inner sleeve rod 1 , and the reading indicator line 1 - 1 is perpendicular to the movement direction of the inner sleeve rod 1 .

[0028] See here Figure 1 The schematic diagram of the structure of a scissor-type steel bar protective layer thickness detection ruler provided in the embodiment of the present application is shown. Figure 1 As shown, specifically, the reading indicator line 1-1 on the inner sleeve rod 1 cooperates with the indicator scales 2-11 on both sides of the reading window 2-1 on the outer sleeve 2, so that the detection personnel can compare the distance data before and after pushing the inner sleeve rod 1 to obtain the thickness of the steel bar protective layer.

[0029] Furthermore, the movement direction of the inner rod 1 is the common axis direction of the inner rod 1, the outer sleeve 2 and the scissor-type telescopic assembly 3, and the reading indicator line 1-1 is perpendicular to the axis direction to avoid systematic errors caused by the inspector when reading.

[0030] As an option in the embodiment of the present application, a plurality of limiting grooves 1 - 2 arranged along the length direction of the inner sleeve rod 1 are formed on the inner sleeve rod 1 .

[0031] See here Figure 1 The schematic diagram of the structure of a scissor-type steel bar protective layer thickness detection ruler provided in the embodiment of the present application is shown. Figure 1 As shown, specifically, the limit groove 1-2 limits the range of movement of the inner sleeve rod 1 to prevent the inner sleeve rod 1 from falling off the outer sleeve 2, and at the same time prevents the displacement range of the inner sleeve rod 1 in the axial direction of the outer sleeve 2 from exceeding the displacement range of the scissors-type telescopic assembly 3 in the radial direction of the outer sleeve 2.

[0032] As an option in the embodiment of the present application, a pointed structure 1 - 3 is formed at the end of the inner sleeve rod 1 , and the pointed structure 1 - 3 is located at the abutment between the inner sleeve rod 1 and the scissor-type telescopic assembly 3 .

[0033] See here Figure 1 The schematic diagram of the structure of a scissor-type steel bar protective layer thickness detection ruler provided in the embodiment of the present application is shown. Figure 1 As shown, specifically, in order to facilitate the scissors-type telescopic assembly 3 to be smoothly expanded to both sides when the inner sleeve rod 1 applies a force to the scissors-type telescopic assembly 3, a pointed structure 1-3 is provided at the abutment between the inner sleeve rod 1 and the scissors-type telescopic assembly 3.

[0034] Furthermore, a groove matching the shape of the pointed structure 1 - 3 is formed at the joint between the scissor-type telescopic assembly 3 and the inner sleeve rod 1 .

[0035] As an option in the embodiment of the present application, a reading window 2-1 and a detection window 2-2 are respectively formed at both ends of the outer sleeve 2; and the scissor-type telescopic component 3 is arranged at the detection window 2-2.

[0036] like Figure 3 and Figure 4As shown, specifically, the reading window 2-1 is used to observe the reading indicator line 1-1, and the reading indicator line 1-1 moves within the observation range of the reading window 2-1; the scissor-type telescopic component 3 passes through the detection window 2-2, contacts the steel bar surface and the template surface, and measures the thickness of the steel bar protective layer.

[0037] As an option in the embodiment of the present application, indicating scales 2-11 are formed on both sides of the reading window 2-1, and the indicating range of the indicating scales 2-11 is greater than or equal to the length of the limiting groove 1-2.

[0038] like Figure 3 and Figure 5 As shown, specifically, the limit groove 1-2 limits the movable range of the inner sleeve rod 1. To prevent the movable range of the inner sleeve rod 1 from exceeding the indication range of the indication scale 2-11, resulting in the inability to obtain accurate protective layer thickness, the indication range of the indication scale 2-11 needs to be greater than or equal to the movable range of the inner sleeve rod 1, that is, the indication range of the indication scale 2-11 needs to be greater than or equal to the length of the limit groove 1-2.

[0039] As an optional embodiment of the present application, a plurality of limiting holes 2-3 arranged along the length direction of the outer sleeve 2 are formed on the outer sleeve 2; the limiting holes 2-3 are arranged corresponding to the limiting grooves 1-2.

[0040] See here Figure 3 The front view of a scissor-type steel bar protective layer thickness detection ruler provided by the embodiment of the present application is shown. Figure 3 As shown, specifically, a pin shaft for limiting the displacement of the inner sleeve rod 1 and the outer sleeve 2 is provided between the limiting hole 2-3 and the limiting groove 1-2, and the movement range of the inner sleeve rod 1 is limited by the cooperation among the limiting hole 2-3, the limiting groove 1-2 and the pin shaft.

[0041] As an optional embodiment of the present application, the scissors-type telescopic assembly 3 includes two rotating measuring blocks 3-1 arranged in an X-shaped structure; the two rotating measuring blocks 3-1 are connected by a pin shaft, and the pin shaft is arranged in the middle of the two rotating measuring blocks 3-1; a tension spring is arranged between the adjacent ends of the two rotating measuring blocks 3-1 away from the inner sleeve rod 1.

[0042] like Figure 1 and Figure 2As shown, specifically, when the inner sleeve rod 1 applies force to the scissor-type telescopic assembly 3, the two rotating measuring blocks 3-1 rotate around the central pin shaft, and the adjacent ends of the two rotating measuring blocks 3-1 move away from each other until they abut against the steel bar surface and the template surface respectively. At this time, the distance between the adjacent ends of the two rotating measuring blocks 3-1 is the thickness of the steel bar protective layer. When the measuring ruler has finished measuring the thickness of the steel bar protective layer, the inner sleeve rod 1 is released, and the tension spring pulls the two rotating measuring blocks 3-1 into the detection window 2-2 for easy storage and next use.

[0043] As an option in the embodiment of the present application, one end of the inner sleeve rod 1 away from the scissors-type telescopic assembly 3 extends out of the outer sleeve 2, and the extension length is greater than the length of the limiting groove 1-2.

[0044] See here Figure 1 The schematic diagram of the structure of a scissor-type steel bar protective layer thickness detection ruler provided in the embodiment of the present application is shown. Figure 1 As shown, specifically, the length of the limit groove 1-2 is related to the measuring range of the detection ruler, and the extended length of the inner sleeve rod 1 is related to the stroke of the inner sleeve rod 1 relative to the outer sleeve 2; the extended length of the inner sleeve rod 1 is greater than the length of the limit groove 1-2 to ensure that the stroke of the inner sleeve rod 1 can cover the measuring range of the detection ruler.

[0045] As an option in the embodiment of the present application, damping oil is applied between the inner sleeve rod 1 and the outer sleeve 2.

[0046] Specifically, the damping oil lubricates and reduces vibrations of the inner sleeve rod 1 and the outer sleeve 2 that are in contact with each other, thereby increasing the service life of the detection ruler.

[0047] In actual use, insert the end of the scissor-type telescopic component 3 on the measuring ruler into the steel bar protective layer whose thickness is to be measured; when the axis of the measuring ruler is parallel to the steel bar surface and the template surface, fix the outer sleeve 2 and push the inner sleeve rod 1 until the two ends of the scissor-type telescopic component 3 are respectively in contact with the steel bar surface and the template surface; read the indicated value at the reading window 2-1 on the outer sleeve 2 at this time, which is the thickness of the steel bar protective layer. Loosen the inner sleeve rod 1, and under the action of the tension spring, the inner sleeve rod 1 and the scissor-type telescopic component 3 return to the initial position, completing the measurement of the steel bar protective layer thickness.

[0048] 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.

[0049] Although the following terms are used more frequently in this article: inner sleeve rod 1, reading indicator line 1-1, limit groove 1-2, pointed structure 1-3, outer sleeve 2, reading window 2-1, indicating scale 2-11, detection window 2-2, limit hole 2-3, scissor-type telescopic component 3, rotating measuring block 3-1, etc., the possibility of using other terms is not excluded. The use of these terms is only for more convenient description and explanation of the essence of the utility model; interpreting them as any additional restrictions is contrary to the spirit of the utility model.

Claims

1. A scissor-type steel bar protective layer thickness detection ruler, characterized in that: It comprises an inner sleeve rod (1), an outer sleeve (2) and a scissor-type telescopic assembly (3); The inner sleeve rod (1) is sleeved inside the outer sleeve (2) and abuts against a scissor-type telescopic component (3) arranged at the end of the outer sleeve (2); the inner sleeve rod (1) moves along the length direction of the outer sleeve (2) and squeezes open the scissor-type telescopic component (3) to measure the thickness of the steel bar protective layer.

2. A scissor-type steel bar protective layer thickness detection ruler according to claim 1, characterized in that: A reading indicator line (1-1) is formed on the outer circumferential surface of the inner sleeve rod (1), and the reading indicator line (1-1) is perpendicular to the movement direction of the inner sleeve rod (1).

3. A scissor-type steel bar protective layer thickness detection ruler according to claim 1, characterized in that: The inner sleeve rod (1) is formed with a plurality of limit grooves (1-2) arranged along the length direction of the inner sleeve rod (1).

4. The scissor-type steel bar protective layer thickness detection ruler according to claim 1 is characterized in that: The end of the inner sleeve rod (1) is formed with a pointed structure (1-3), and the pointed structure (1-3) is located at the abutment portion between the inner sleeve rod (1) and the scissor-type telescopic assembly (3).

5. The scissor-type steel bar protective layer thickness detection ruler according to claim 1 is characterized in that: A reading window (2-1) and a detection window (2-2) are respectively formed at two ends of the outer sleeve (2); a scissor-type telescopic assembly (3) is arranged at the detection window (2-2).

6. A scissor-type steel bar protective layer thickness detection ruler according to claim 5, characterized in that: Indicating scales (2-11) are formed on both sides of the reading window (2-1), and an indicating range of the indicating scales (2-11) is greater than or equal to the length of the limiting groove (1-2).

7. The scissor-type steel bar protective layer thickness detection ruler according to claim 1 is characterized in that: The outer sleeve (2) is formed with a plurality of limiting holes (2-3) arranged along the length direction of the outer sleeve (2); the limiting holes (2-3) are arranged corresponding to the limiting grooves (1-2).

8. The scissor-type steel bar protective layer thickness detection ruler according to claim 1 is characterized in that: The scissor-type telescopic assembly (3) comprises two rotating measuring blocks (3-1) arranged in an X-shaped structure; the two rotating measuring blocks (3-1) are connected via a pin, and the pin is arranged in the middle of the two rotating measuring blocks (3-1); a tension spring is arranged between adjacent ends of the two rotating measuring blocks (3-1) away from the inner sleeve rod (1).

9. The scissor-type steel bar protective layer thickness detection ruler according to claim 1 is characterized in that: One end of the inner sleeve rod (1) away from the scissor-type telescopic assembly (3) extends out of the outer sleeve (2), and the extension length is greater than the length of the limiting groove (1-2).

10. A scissor-type steel bar protective layer thickness detection ruler according to claim 1, characterized in that: Damping oil is applied between the inner sleeve rod (1) and the outer sleeve (2).

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