Three-point tool for measuring the line of a crash barrier

Abstract

The utility model provides a kind of three-point tool ruler for measuring anti-collision wall line type, it is related to measuring ruler technical field, including main ruler, fixed ruler, telescopic one section ruler and telescopic two section ruler, the lower end of the main ruler is fixedly connected with fixed ruler, the fixed ruler is used to abut against anti-collision wall root formwork or wall surface to determine measurement reference distance, the side surface of the main ruler is movably connected with telescopic one section ruler and telescopic two section ruler, the telescopic one section ruler and telescopic two section ruler are used to contact to be measured point and measure its distance relative to fixed section, adjustable angle's slope board is equipped in telescopic section movable end front part, slope board can be freely adjusted angle to adapt non-perpendicular wall surface or curved surface formwork, provide consistent measurement reference by bottom fixed section, the adjustable telescopic section of upper two places is combined scale to realize key point rapid measurement and design data comparison, cooperate top bubble instrument to ensure that ruler body is vertical, significantly simplify operation procedure, improve efficiency, and fundamentally guarantee formwork positioning accuracy and anti-collision wall line type fluency and appearance quality.

Description

Technical Field

[0001] This utility model relates to the field of measuring tools, specifically to a three-point measuring tool ruler for measuring the line shape of a crash barrier. Background Technology

[0002] In bridge construction, crash barriers serve as crucial safety protection facilities, and precise control of their alignment is paramount. A good alignment not only affects structural safety but also directly impacts the overall aesthetics of the bridge and the comfort of drivers. Currently used traditional measurement methods, such as rulers, measuring tapes, string lines, or total stations, have significant limitations: they are difficult to efficiently and conveniently adapt to the alignment inspection of crash barriers with different curvatures, especially variable curvatures; the operation process is cumbersome and reliant on personnel experience, easily leading to template positioning deviations; furthermore, it is difficult to maintain consistent measurement benchmarks and effectively address situations where the wall surface is not vertical or irregular. These shortcomings often result in appearance quality problems after the crash barrier is formed, such as uneven edges and rough curves, and affect construction efficiency.

[0003] Therefore, there is an urgent need to develop a three-point ruler for measuring the alignment of crash barriers to solve the above-mentioned technical problems. Utility Model Content

[0004] This utility model is a three-point tool ruler for measuring the line shape of a crash barrier. The utility model is designed with a fixed ruler fixedly connected to the lower end of the main ruler. One side of the main ruler is provided with a telescopic first section ruler and a telescopic second section ruler for contacting the point to be measured and measuring its distance relative to the fixed section. The slope plate can be freely adjusted to adapt to non-vertical walls or curved templates, effectively solving the above-mentioned technical problems.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a three-point ruler for measuring the alignment of a crash barrier, comprising a main ruler, a fixed ruler, a telescopic first-section ruler, and a telescopic second-section ruler. The fixed ruler is fixedly connected to the lower end of the main ruler and is used to abut against the base template or wall surface of the crash barrier to determine the measurement reference distance. The telescopic first-section ruler and the telescopic second-section ruler are movably connected to the side of the main ruler and are used to contact the point to be measured and measure its distance relative to the fixed section.

[0006] Preferably, a groove is provided on one side of the main ruler, and a sliding track is provided in the groove. The telescopic first section ruler and the telescopic second section ruler are slidably mounted on the main ruler through the sliding track, and a horizontal measuring bubble is provided on the top of the main ruler.

[0007] Preferably, both the telescopic first section ruler and the telescopic second section ruler include a fixed end and a movable end, the length of the fixed end is equal to the length of the fixed ruler, and the movable end is movably connected inside the fixed end.

[0008] Preferably, the movable ends of the telescopic first section ruler and the telescopic second section ruler are movably connected to their fixed ends via slide rails, and the fixed end is provided with a buckle away from the main ruler end to prevent the movable end from sliding out of the fixed end.

[0009] Preferably, both the movable ends of the telescopic first section ruler and the telescopic second section ruler are provided with graduations.

[0010] Preferably, the front of the movable end of both the first and second telescopic rulers is provided with a slope plate, and the slope plate is movably connected to the movable end via a pivot hinge.

[0011] Beneficial effects

[0012] This utility model provides a three-point ruler for measuring the alignment of crash barriers, which has the following advantages compared with existing technologies:

[0013] This invention provides a consistent measurement benchmark through a fixed bottom section, and two adjustable telescopic sections at the top combined with scales enable rapid measurement of key points and comparison of design data. The top bubble meter ensures the ruler is vertical, significantly simplifying the operation process, improving efficiency, and fundamentally guaranteeing the template positioning accuracy and the smoothness and appearance quality of the anti-collision wall lines.

[0014] This utility model features an adjustable telescopic section length and flexible height positioning via a sliding track, allowing it to perfectly adapt to crash barriers ranging from straight lines to arbitrarily complex curves. The hinged slope design at the front end of the telescopic section effectively addresses non-vertical or irregular wall surfaces. This tool ruler has a simple structure and intuitive operation, reducing reliance on operator experience, minimizing rework and material waste, and overall lowering construction costs, making it easy to promote and apply. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This is the front view of the present utility model.

[0018] In the picture:

[0019] 1. Main scale, 2. Fixed scale, 3. Telescopic scale (single section), 4. Telescopic scale (double section), 5. Fixed end, 6. Movable end, 7. Horizontal measuring bubble, 8. Sliding track, 9. Slope plate. Detailed Implementation

[0020] To make the technical problems, technical solutions and beneficial effects of this utility model clearer, this utility model will be further described in detail with reference to the embodiments and accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit this utility model. The technical solutions of this utility model will be described in detail below with reference to the embodiments and accompanying drawings, but the scope of protection is not limited thereto.

[0021] Please see Figure 1-2 This utility model provides a technical solution:

[0022] The three-point tool ruler mainly consists of a main ruler 1, a fixed ruler 2, a telescopic first-section ruler 3, a telescopic second-section ruler 4, a horizontal measuring bubble 7, and a slope plate 9.

[0023] In some embodiments, the main ruler 1 is a vertically arranged ruler body with a longitudinal groove on the side. A sliding rail 8 is embedded in the groove, and a horizontal measuring bubble 7 is fixedly installed on the top of the main ruler 1 to ensure that the tool ruler is perpendicular to the ground.

[0024] In some embodiments, the main ruler 1 is provided with a snap-lock knob in the groove to lock the adjusted positions of the telescopic first section ruler 3 and the telescopic second section ruler 4.

[0025] In some embodiments, the fixed ruler 2 is fixedly connected to the bottom of the main ruler 1, and its length is fixed. In use, its front end abuts against the base template of the crash barrier to establish a reference measurement distance.

[0026] In some embodiments, both the telescopic first-section ruler 3 and the telescopic second-section ruler 4 are slidably installed in the middle of the main ruler 1 via the sliding rail 8. The height is determined by the scale on the main ruler 1. Each telescopic ruler section includes a fixed end 5 and a movable end 6. The fixed end 5 is the same length as the fixed ruler 2, which facilitates the measurement and reading of the reference surface of the base template of the crash barrier or the completed wall. The movable end 6 is nested inside the fixed end 5 and is telescopically adjusted via a sliding track. The front end is equipped with a scale and a buckle to prevent slippage.

[0027] In some embodiments, the front end of the movable end 6 is connected to the slope plate 9 via a pivot hinge, and the slope plate 9 can be freely adjusted to adapt to non-vertical walls or curved templates.

[0028] Example 1

[0029] Initial positioning using this tool ruler: The operator places the tool ruler vertically next to the template of the crash barrier to be measured, ensuring that the front end of the fixed ruler 2 at the bottom of the main ruler 1 is firmly against the base template of the crash barrier or the reference surface of the completed wall. The length of the fixed ruler 2 is a preset fixed value, ensuring that the tool ruler maintains the same reference distance from the wall during each measurement, thus improving measurement consistency.

[0030] To perform vertical calibration using this tool ruler: observe the horizontal measuring bubble 7 installed on the top of the main ruler 1, and fine-tune the ruler body angle until the bubble is centered, ensuring that the main ruler 1 is perpendicular to the horizontal ground.

[0031] Based on the design drawings or construction requirements, determine the two target height positions to be measured. Slide the first telescopic ruler 3 and the second telescopic ruler 4 along the sliding track 8 on the side of the main ruler 1 to the corresponding scale positions and lock them in place. The scale on the main ruler 1 is used to accurately indicate the vertical height of the measurement point.

[0032] Pull out the movable ends 6 of both the first and second telescopic rulers (section 3 and section 4) so ​​that their front slope plates 9 gently contact the measurement point on the anti-collision wall template. The slope plates 9 can adaptively tilt via a hinge, ensuring surface contact even against non-vertical or curved walls, improving measurement adaptability. Read the scale value on the movable end 6 of the telescopic ruler; this value represents the horizontal offset of the current measurement point relative to the reference plane of the fixed ruler 2. Compare the measured value with the data on the design drawings to determine if the template positioning is accurate. For example, if the design value is +5mm and the measured value is +7mm, the deviation is +2mm, requiring template adjustment.

[0033] This tool ruler consists of a three-point measurement system consisting of a fixed ruler (reference point 2), a ruler with one extension section (measuring point 3), and a ruler with two extension sections (measuring point 4). These three points can uniquely determine a segment of a spatial curve, thereby accurately reflecting the local alignment of the crash barrier, and are especially suitable for controlling the alignment of curved or variable cross-section walls.

[0034] Example 2

[0035] When the crash barrier has a complex curve or a locally twisted surface, follow these steps:

[0036] Following the preparation work in Example 1, after completing the benchmark positioning and vertical calibration of the tool ruler, slide the first telescopic ruler 3 and the second telescopic ruler 4 to the two characteristic heights that need to be controlled. Slowly pull out the telescopic rulers, causing the slope plate 9 to rotate automatically under the action of the pivot hinge, tightly fitting the curved template. Since the slope plate 9 is a planar structure, it forms tangential contact when it contacts the curved surface, still accurately reflecting the normal distance at that point. By reading the scales of the two telescopic rulers and combining them with the fixed ruler 2 benchmark, the three-point data can be input into a simple calculation program or compared with a preset curve table to evaluate the overall line deviation.

[0037] The above description is a further detailed explanation of the present invention in conjunction with specific preferred embodiments. For those skilled in the art to which the present invention pertains, several simple deductions or substitutions can be made without departing from the present invention, and all such deductions or substitutions should be considered as falling within the scope of patent protection determined by the submitted claims.

Claims

1. A three-point ruler for measuring the alignment of crash barriers, characterized in that: It includes a main ruler, a fixed ruler, a telescopic first-section ruler, and a telescopic second-section ruler. The fixed ruler is fixedly connected to the lower end of the main ruler. The fixed ruler is used to abut against the base template or wall surface of the anti-collision wall to determine the measurement reference distance. The telescopic first-section ruler and the telescopic second-section ruler are movably connected to the side of the main ruler. The telescopic first-section ruler and the telescopic second-section ruler are used to contact the point to be measured and measure its distance relative to the fixed section. The main ruler has a groove on one side, and a sliding rail is provided in the groove. The telescopic first section ruler and the telescopic second section ruler are slidably installed on the main ruler through the sliding rail. A horizontal measuring bubble is provided on the top of the main ruler.

2. The three-point tool ruler according to claim 1, characterized in that: Both the telescopic first-section ruler and the telescopic second-section ruler include a fixed end and a movable end. The length of the fixed end is equal to the length of the fixed ruler, and the movable end is movably connected inside the fixed end.

3. The three-point tool ruler according to claim 2, characterized in that: The movable ends of the telescopic first section ruler and the telescopic second section ruler are movably connected to their fixed ends via slide rails. The fixed end is provided with a buckle away from the main ruler end to prevent the movable end from sliding out of the fixed end.

4. The three-point tool ruler according to claim 2, characterized in that: Both the movable ends of the telescopic first section ruler and the telescopic second section ruler are equipped with graduations.

5. The three-point tool ruler according to claim 2, characterized in that: Both the first and second telescopic rulers have a ramp at the front of their movable ends, and the ramp is movably connected to the movable ends via a pivot hinge.

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