Adjustable cover measuring scale

Abstract

This utility model relates to the field of building engineering technology and discloses an adjustable rebar protective layer measuring ruler, comprising: a measuring ruler with a receiving groove along its vertical surface; a first measuring ruler disposed within the receiving groove of the measuring ruler and perpendicular to the measuring ruler; a sliding mechanism slidably disposed within the receiving groove of the measuring ruler and distributed vertically; a second measuring ruler disposed at the displacement end of the sliding mechanism and parallel to the first measuring ruler; and a locking mechanism disposed on the second measuring ruler for locking the second measuring ruler after it has moved to a target position, thereby limiting the distance between the first and second measuring rulers. The purpose of this adjustable rebar protective layer measuring ruler is to solve the problems of existing general-purpose measuring tools being unable to quickly compare the acceptable range of protective layer thickness and lacking a dedicated adjustment mechanism that can preset and lock a specific measurement range.

Description

Technical Field

[0001] This utility model relates to the field of building engineering technology, specifically to an adjustable measuring ruler for steel reinforcement protective layer. Background Technology

[0002] In the quality acceptance of reinforced concrete structure construction, the thickness of the concrete cover is a crucial testing indicator. Its qualification directly affects the durability and load-bearing capacity of the structure. Currently, the testing of the concrete cover thickness on the construction site usually relies on common measuring tools such as rulers or steel tape measures. The existence of these tools is based on their universality, easy accessibility, and basic length measurement function. They can meet the rough measurement needs under normal circumstances and constitute the most basic quality inspection method.

[0003] However, the aforementioned conventional measuring tools have significant limitations in practical applications. First, they cannot perform fast and accurate comparative measurements: rulers and measuring tapes can only measure a single value and cannot simultaneously indicate the acceptable range of protective layer thickness (i.e., the minimum and maximum allowable values). After measurement, manual comparison with drawing specifications is required, which is inefficient and prone to errors. Second, they lack dedicated adjustment and locking mechanisms: when faced with protective layer thicknesses with different design requirements, general-purpose tools cannot pre-set and lock a specific measurement range, resulting in each measurement being an independent operation and a cumbersome process. Utility Model Content

[0004] The purpose of this invention is to solve the problems that existing general measuring tools cannot quickly compare the qualified range of protective layer thickness and lack a dedicated adjustment mechanism that can preset and lock a specific measurement range. Therefore, an adjustable steel reinforcement protective layer measuring ruler is proposed.

[0005] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: An adjustable measuring ruler for measuring the concrete cover of reinforcing bars includes: The measuring ruler has a receiving groove along its vertical surface; The first measuring ruler is set in the receiving groove of the detection ruler and is set perpendicular to the detection ruler; A sliding mechanism is slidably disposed within the receiving groove of the detection ruler and distributed vertically; The second measuring ruler is disposed at the displacement end of the sliding mechanism and is arranged parallel to the first measuring ruler; A locking mechanism is provided on the second measuring ruler to lock the second measuring ruler after it moves to the target position, so as to limit the distance between the first measuring ruler and the second measuring ruler, and to determine whether the thickness of the steel reinforcement protective layer is qualified by means of the distance.

[0006] Based on the above technical solution, the present invention can be further improved as follows.

[0007] Furthermore, the sliding mechanism includes: The toothed plate is fixedly installed in the receiving groove of the measuring ruler and extends vertically, and has several toothed structures on the side facing the opening of the receiving groove. A connecting seat is fixedly installed on the end of the second measuring ruler facing the receiving groove. A rolling seat is rotatably connected to the inner side of the connecting seat, and its outer periphery is provided with a plurality of meshing parts that mesh with the toothed structure; The rolling seat can roll along the toothed plate through the engagement of the meshing part and the toothed structure.

[0008] Furthermore, the sliding mechanism also includes: The guide rod is fixedly installed in the receiving groove of the measuring ruler and passes through the connecting seat, which can slide along the guide rod.

[0009] Furthermore, the locking mechanism includes: The mounting plate is disposed through the connector and is perpendicular to the connector. An elastic element, one end of which is fixedly mounted on the surface of the mounting plate near the engaging part, and the number of the elastic elements is at least two and distributed on the upper and lower sides of the connecting seat; The limiting part is fixedly installed on the other end of the elastic member and abuts against the engaging part of the rolling seat to limit the rotation of the rolling seat; An operating part is disposed on the other side surface of the limiting part, and is used to drive the limiting part to disengage from the engagement part.

[0010] Furthermore, at least two connecting grooves are provided on the surface of the second measuring ruler, and the operating part is at least partially located in the connecting grooves.

[0011] Furthermore, the operating unit includes: A pull rod, one end of which is fixedly installed on the surface of the limiting part away from the rolling seat, and the other end of the pull rod passes through the second measuring scale and extends into the connecting groove. The number and distribution of the pull rods are adapted to the limiting part and the connecting groove. The grip is fixedly installed on one end of the pull rod located inside the connecting groove, wherein the grip is exposed at the opening of the connecting groove.

[0012] Furthermore, a handle is fixedly connected to one end of the measuring ruler, and the outer periphery of the handle is covered with an anti-slip layer.

[0013] Furthermore, the vertical surface of the measuring ruler is provided with a scale, which is used to indicate the distance between the first measuring ruler and the second measuring ruler.

[0014] Furthermore, the length of the first measuring ruler is less than the length of the second measuring ruler.

[0015] Compared with the prior art, the technical solution of this application has the following beneficial technical effects: The receiving groove on the vertical surface of the measuring ruler provides precise guidance for the sliding mechanism, ensuring that the second measuring ruler moves smoothly to the target position. The first and second measuring rulers, which are set parallel to each other, are fixed by the locking mechanism to form a measurement range representing the qualified thickness range. During on-site testing, it is only necessary to place the first measuring ruler close to the surface of the steel bar and observe the relative position of the second measuring ruler with the concrete surface to intuitively determine the qualification. There is no need to manually compare with the drawings and specifications, which significantly improves the testing efficiency and avoids errors. At the same time, the sliding setting of the sliding mechanism in the receiving groove allows for flexible adjustment of the measurement range according to different design requirements, realizing the universality of the tool, simplifying the operation process, and lowering the technical threshold. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall connection structure of this utility model; Figure 2 This is a schematic diagram of the connection structure between the receiving groove and the sliding mechanism of the detection ruler of this utility model; Figure 3 This utility model Figure 2 Enlarged view of point A in the middle; Figure 4 This is a schematic diagram of the connection structure of the locking mechanism of this utility model; Figure 5 This is a schematic diagram of the connection structure between the operating part and the connecting groove of this utility model.

[0017] In the diagram: 1. Measuring ruler; 2. First measuring ruler; 3. Sliding mechanism; 31. Toothed plate; 32. Connecting seat; 33. Rolling seat; 34. Guide rod; 4. Second measuring ruler; 5. Locking mechanism; 51. Mounting plate; 52. Elastic element; 53. Limiting part; 54. Operating part; 541. Pull rod; 542. Grip part; 6. Connecting groove; 7. Handle; 8. Scale. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] Combination Figures 1-5 As shown, the adjustable rebar cover measuring ruler of this utility model includes: The measuring ruler 1 has a receiving groove along its vertical surface; The first measuring ruler 2 is set in the receiving groove of the measuring ruler 1 and is set perpendicular to the measuring ruler 1; The sliding mechanism 3 is slidably disposed in the receiving groove of the detection ruler 1 and is distributed vertically; The second measuring ruler 4 is located at the displacement end of the sliding mechanism 3 and is parallel to the first measuring ruler 2. The locking mechanism 5 is set on the second measuring ruler 4 and is used to lock the second measuring ruler 4 after it moves to the target position, so as to limit the distance between the first measuring ruler 2 and the second measuring ruler 4. The thickness of the steel reinforcement protective layer is determined by the distance. It should also be noted that the first measuring ruler 2 and the second measuring ruler 4 are both provided with corresponding scale lines, and the thickness of the steel reinforcement protective layer can be seen intuitively through the scale lines.

[0020] The receiving groove of the measuring ruler 1 provides the structural foundation and guide rail. The first measuring ruler 2, as a fixed reference surface, directly contacts the surface of the reinforcing steel. The sliding mechanism 3 drives the second measuring ruler 4 to move precisely vertically to the position of the protective layer thickness required by the design. The locking mechanism 5 then fixes the second measuring ruler 4 in this position, forming a preset qualified thickness measurement range. In actual testing, the operator holds the first measuring ruler 2 against the reinforcing steel and observes the positional relationship between the end of the second measuring ruler 4 and the concrete surface. If the second measuring ruler 4 can completely cover the protective layer thickness, it is judged to be qualified, realizing a quick and intuitive comparative measurement. It should also be noted that when using this measuring tool, the position of the second measuring ruler 4 is adjusted first. After the second measuring ruler 4 is adjusted to a suitable position, the determination of whether the concrete protective layer of the reinforcing steel meets the requirements is made. During the determination process, it is not necessary to operate the locking mechanism 5.

[0021] In a preferred embodiment, this utility model can be further configured as follows: Figure 2 , Figure 3 As shown; the sliding mechanism 3 includes: The toothed plate 31 is fixedly installed in the receiving groove of the measuring ruler 1 and extends vertically, and has several toothed structures on the side facing the opening of the receiving groove. The connecting seat 32 is fixedly installed on the end of the second measuring ruler 4 facing the receiving groove; The rolling seat 33 is rotatably connected to the inner side of the connecting seat 32, and its outer periphery is provided with several meshing parts that mesh with the toothed structure; The rolling seat 33 can roll along the toothed plate 31 through the engagement of the meshing part and the toothed structure. The toothed structure of the toothed plate 31 and the meshing part of the rolling seat 33 form a meshing transmission. When the operator moves the second measuring ruler 4, the rolling seat 33 rolls along the toothed plate 31. Each tooth pitch corresponds to a fixed displacement, ensuring the movement accuracy and repeatability accuracy, and enabling precise setting of the protective layer thickness.

[0022] In a preferred embodiment, this utility model can be further configured as follows: Figure 3 , Figure 4 As shown; the sliding mechanism 3 also includes: The guide rod 34 is fixedly installed in the receiving groove of the measuring ruler 1 and passes through the connecting seat 32. The connecting seat 32 can slide along the guide rod 34. The guide rod 34 provides additional linear guiding constraint for the connecting seat 32 to prevent the connecting seat 32 from deflecting or shaking during movement, and to ensure that the second measuring ruler 4 always maintains a parallel relationship with the first measuring ruler 2.

[0023] In a preferred embodiment, this utility model can be further configured as follows: Figure 2 , Figure 4 As shown; the locking mechanism 5 includes: Mounting plate 51 is disposed through the connecting base 32 and is perpendicular to the connecting base 32; One end of the elastic element 52 is fixedly installed on the side surface of the mounting plate 51 near the engagement part. The number of elastic elements 52 is at least two and they are distributed on the upper and lower sides of the connecting seat 32. The limiting part 53 is fixedly installed on the other end of the elastic member 52 and abuts against the engaging part of the rolling seat 33 to limit the rotation of the rolling seat 33. The operating part 54 is disposed on the other side surface of the limiting part 53 and is used to drive the limiting part 53 to disengage from the engagement part. Under normal conditions, the elastic member 52 pushes the limiting part 53 to maintain engagement with the engagement part of the rolling seat 33, thereby restricting the rotation of the rolling seat 33 and achieving position locking. When adjustment is required, the operator uses the operating part 54 to overcome the force of the elastic member 52 to disengage the limiting part 53 from the engagement part, thereby releasing the rotation restriction on the rolling seat 33 and allowing the second measuring ruler 4 to move. The elastic member 52 is preferably a stainless steel spring. At the same time, the position of the guide rod 34 does not affect the engagement of the limiting part 53 and the movement between the guide rod 34 and the limiting part 53 does not interfere with each other.

[0024] In a preferred embodiment, this utility model can be further configured as follows: Figure 4 , Figure 5As shown; at least two connecting grooves 6 are also provided on the surface of the second measuring ruler 4. The operating part 54 is at least partially located in the connecting groove 6. The connecting groove 6 provides the operating part 54 with a receiving space and an operating channel, avoids external protrusions from interfering with the measurement operation, and protects the operating part 54 from accidental collisions.

[0025] In a preferred embodiment, this utility model can be further configured as follows: Figure 4 , Figure 5 As shown; the operation unit 54 includes: One end of the pull rod 541 is fixedly installed on the side surface of the limiting part 53 away from the rolling seat 33, and the other end of the pull rod 541 passes through the second measuring ruler 4 and extends into the connecting groove 6. The number and distribution of the pull rods 541 are adapted to the limiting part 53 and the connecting groove 6. The grip portion 542 is fixedly installed on one end of the pull rod 541 located in the connecting groove 6, wherein the grip portion 542 is exposed at the opening of the connecting groove 6. The pull rod 541 transmits the operating force from the grip portion 542 to the limiting portion 53 to realize the unlocking operation. The operator overcomes the elastic force of the elastic member 52 by squeezing and sliding the two grip portions 542. At this time, the elastic member 52 is in a compressed state, and the upper and lower limiting portions 53 can be controlled synchronously to realize the unlocking operation.

[0026] In a preferred embodiment, this utility model can be further configured as follows: Figure 1 As shown; a handle 7 is fixedly connected to one end of the measuring ruler 1. The outer periphery of the handle 7 is covered with an anti-slip layer. The handle 7 provides a comfortable grip for the operator, and the anti-slip layer increases hand stability, enabling the operator to hold the measuring ruler firmly.

[0027] In a preferred embodiment, this utility model can be further configured as follows: Figure 1 As shown, the vertical surface of the measuring ruler 1 is provided with a scale 8. The scale 8 is used to indicate the distance between the first measuring ruler 2 and the second measuring ruler 4. The scale 8 directly displays the actual distance value between the first measuring ruler 2 and the second measuring ruler 4. The operator can not only make a qualification judgment, but also read the specific protective layer thickness value, which meets the needs of recording and traceability, and realizes the dual functions of quantitative measurement and qualitative judgment.

[0028] In a preferred embodiment, this utility model can be further configured as follows: Figure 1 As shown, the length of the first measuring ruler 2 is less than the length of the second measuring ruler 4. The shorter first measuring ruler 2 makes it easier to extend under the rebar and make direct contact with the surface of the rebar, while the longer second measuring ruler 4 can span the rebar and cover the thickness range of the protective layer. This differentiated length design ensures the accuracy of the measurement benchmark and the feasibility of the inspection operation.

[0029] The specific working principle of this adjustable rebar cover measuring ruler is as follows: First, the protective layer thickness range required by the design drawings is preset. The operator overcomes the elastic force of the elastic member 52 by sliding the grip part 542, so that the limiting part 53 disengages from the engagement part of the rolling seat 33 and releases the locking state of the sliding mechanism 3. Then the second measuring ruler 4 is moved along the toothed plate 31. Through the meshing transmission between the rolling seat 33 and the toothed plate 31, each tooth pitch corresponds to a fixed displacement, ensuring that the second measuring ruler 4 is accurately moved to the position with the appropriate protective layer thickness. At this time, the guide rod 34 provides a linear guide constraint for the connecting seat 32 to prevent deflection and swaying, and ensure that the second measuring ruler 4 and the first measuring ruler 2 remain parallel. After the gripping part 542 is released, the elastic member 52 pushes the limiting part 53 to re-engage with the rolling seat 33, and the second measuring ruler 4 is firmly locked by the locking mechanism 5, forming a preset qualified thickness measurement range. During actual testing, the operator holds the handle 7, using the anti-slip layer to ensure grip stability, inserts the shorter first measuring ruler 2 under the rebar and makes direct contact with the rebar surface, and the longer second measuring ruler 4 spans the rebar and covers the protective layer thickness range. The positional relationship between the end of the second measuring ruler 4 and the concrete surface can be intuitively determined.

[0030] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0031] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An adjustable cover meter, characterized in that, include: The measuring ruler (1) has a receiving groove along its vertical surface; The first measuring ruler (2) is set in the receiving groove of the detection ruler (1) and is set perpendicular to the detection ruler (1); The sliding mechanism (3) is slidably disposed in the receiving groove of the detection ruler (1) and distributed vertically; The second measuring ruler (4) is disposed at the displacement end of the sliding mechanism (3) and is disposed parallel to the first measuring ruler (2); A locking mechanism (5) is provided on the second measuring ruler (4) to lock the second measuring ruler (4) after the second measuring ruler (4) moves to the target position, so as to limit the distance between the first measuring ruler (2) and the second measuring ruler (4), and determine whether the thickness of the steel reinforcement protective layer is qualified by the distance.

2. The adjustable cover meter according to claim 1, wherein, The sliding mechanism (3) includes: The toothed plate (31) is fixedly installed in the receiving groove of the detection ruler (1) and extends vertically, and has several toothed structures on the side facing the opening of the receiving groove. The connecting seat (32) is fixedly installed on the end of the second measuring ruler (4) facing the receiving groove; The rolling seat (33) is rotatably connected to the inner side of the connecting seat (32), and its outer periphery is provided with a plurality of meshing parts that mesh with the toothed structure; The rolling seat (33) can roll along the toothed plate (31) through the engagement of the meshing part and the toothed structure.

3. The adjustable cover meter according to claim 2, wherein, The sliding mechanism (3) further includes: The guide rod (34) is fixedly installed in the receiving groove of the measuring ruler (1) and passes through the connecting seat (32). The connecting seat (32) can slide along the guide rod (34).

4. The adjustable cover meter according to claim 2, wherein, The locking mechanism (5) includes: Mounting plate (51) is disposed through the connecting seat (32) and is perpendicular to the connecting seat (32); The elastic element (52) has one end fixedly mounted on the side surface of the mounting plate (51) near the engagement part. The number of elastic elements (52) is at least two and they are distributed on the upper and lower sides of the connecting seat (32). The limiting part (53) is fixedly installed on the other end of the elastic member (52) and abuts against the engaging part of the rolling seat (33) to limit the rotation of the rolling seat (33); An operating part (54) is provided on the other side surface of the limiting part (53) for driving the limiting part (53) to disengage from the engagement part.

5. An adjustable measuring ruler for reinforcing bar protective layer according to claim 4, characterized in that, The second measuring ruler (4) also has at least two connecting grooves (6) on its surface, and the operating part (54) is at least partially located in the connecting grooves (6).

6. An adjustable measuring ruler for reinforcing bar protective layer according to claim 4, characterized in that, The operating unit (54) includes: A pull rod (541) has one end fixedly installed on the side surface of the limiting part (53) away from the rolling seat (33), and the other end of the pull rod (541) passes through the second measuring ruler (4) and extends into the connecting groove (6). The number and distribution of the pull rods (541) are adapted to the limiting part (53) and the connecting groove (6). The grip (542) is fixedly installed on one side end of the pull rod (541) located in the connecting groove (6), wherein the grip (542) is exposed at the opening of the connecting groove (6).

7. An adjustable measuring ruler for reinforcing bar protective layer according to claim 1, characterized in that, One end of the measuring ruler (1) is fixedly connected to a handle (7), and the outer periphery of the handle (7) is covered with an anti-slip layer.

8. An adjustable measuring ruler for reinforcing bar protective layer according to claim 1, characterized in that, The vertical surface of the measuring ruler (1) is provided with a scale (8), which is used to indicate the distance between the first measuring ruler (2) and the second measuring ruler (4).

9. An adjustable measuring ruler for reinforcing bar protective layer according to claim 1, characterized in that, The length of the first measuring ruler (2) is less than the length of the second measuring ruler (4).

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