Measuring scale for measuring concrete hardening factor

Abstract

The utility model discloses a measuring scale for measuring a concrete hardening factor, which belongs to the technical field of concrete mixture test detection and comprises a transverse scale and a vertical scale. The vertical ruler is vertically connected to the middle part of the transverse ruler and can slide up and down relative to the transverse ruler; the transverse ruler is used for being matched with the amplification factor cylinder; the vertical ruler is provided with an electronic detection assembly, and the electronic detection assembly is used for detecting the descending height of the vertical ruler and obtaining a corresponding concrete hardening factor according to the descending height. The measuring scale for measuring the concrete augmentation factor can well solve the problems existing in the prior art, the measuring scale design is still kept according to the current standard, but the upper end of the vertical scale abandons the original manual reading mode that the vertical scale is fixed by a nut, and adopts a digital display direct reading mode, so that the reading of the measuring scale is more convenient and faster, and the measurement accuracy is improved. Errors can be reduced to a great extent, and the efficiency and the accuracy of a concrete augmentation factor detection technology are greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of concrete mixture test and detection, in particular to a ruler used for measuring concrete compaction factor. Background Art

[0002] In concrete engineering practice, the consistency of concrete is one of the important indicators for evaluating the flow properties of concrete mixtures. The consistency of concrete is mainly quantified by three indicators: expansion, slump and Vebe consistency. Among them, the slump test is applicable to concrete mixtures with a slump of not less than 10mm, the Vebe consistency test is applicable to concrete mixtures with a Vebe consistency of 5s to 30s, and the expansion is applicable to pumped high-strength concrete and self-compacting concrete. For dry hard concrete with a slump of not more than 50mm or extra dry hard concrete mixtures with a Vebe consistency greater than 30s, the compaction factor is usually used as a quantitative indicator.

[0003] The current standards "Test Standard for Performance of Ordinary Concrete Mixtures" GB / T 50080-2016 (Appendix A) and "Railway Concrete" TB / T 3275-2018 (Appendix K) specify the test method for concrete compaction factor. The test process is as follows: put the calculated mass of concrete into the compaction factor cylinder, scrape it flat and cover it with a cover plate, place it on a jumping table and vibrate it 15 times, and finally place the horizontal ruler of the ruler at the mouth of the cylinder so that the cylinder wall is stuck in the groove of the horizontal ruler, and slide the vertical ruler with a scale to directly read the concrete compaction factor. However, in practical applications, the existing concrete compaction factor test has the following technical problems:

[0004] 1. Low reading accuracy: Traditional augmentation factor measurement relies entirely on the reading of the ruler. The left side of the ruler is the augmentation height JH ruler, and the right side is the augmentation factor JC ruler. This design makes it easy to confuse when reading and the accuracy is not high.

[0005] 2. Complicated reading: When measuring, you need to place the ruler on the cylinder first, fix the vertical ruler by tightening the nut, and then observe the reading at the nut. Since the nut cannot accurately align with the reading like a pointer, it is necessary to further find the diameter of the nut and then correspond to the reading. The whole measurement process is cumbersome and there is a large scale error.

[0006] 3. The solidification factor cylinder is easy to deform: The solidification factor instrument products on the market are all designed according to standards. The solidification factor cylinder used to hold concrete is a steel cylinder with a thickness of only 3mm. It is easy to deform during transportation and use, which will affect the measurement results of the solidification factor.

[0007] 4. Susceptible to environmental influences: The solidity factor instrument is usually placed at the concrete pouring site. The complex environmental conditions can easily cause debris, such as concrete, coarse and fine aggregates, to fall into the circular hole on the cylindrical cover of the instrument. These debris will directly affect the measurement results of the solidity factor.

[0008] 5. The slot design is unreasonable: the slot of the horizontal ruler is designed as a 5×5mm square, while the wall thickness of the cylinder is 3mm. When measuring, the slot is placed on the cylinder, and there is a 2mm gap, which causes the horizontal ruler to swing left and right easily during measurement and is difficult to control. Utility Model Content

[0009] In view of the problems existing in the above-mentioned prior art, the utility model provides a ruler for measuring the concrete compaction factor, which is intended to solve the problems that the existing compaction factor measurement readings are cumbersome, the reading accuracy is low, and it is easily affected by environmental factors. To achieve the above-mentioned purpose, the utility model provides the following technical solutions:

[0010] A ruler for measuring concrete compaction factor comprises a horizontal ruler and a vertical ruler; the vertical ruler is vertically connected to the middle of the horizontal ruler and can slide up and down relative to the horizontal ruler; the horizontal ruler is used to cooperate with the compaction factor cylinder; the vertical ruler is provided with an electronic detection component, the electronic detection component is used to detect the descending height of the vertical ruler, and obtain the corresponding concrete compaction factor according to the descending height.

[0011] Furthermore, a guide surface is provided on the horizontal ruler, and the guide surface is used to guide the vertical ruler to be in a vertical state.

[0012] Furthermore, the vertical ruler is provided with a waist-shaped long hole along the length direction; the horizontal ruler is provided with a T-shaped fixing piece, and the T-shaped fixing piece passes through the waist-shaped long hole and is threadedly connected to the horizontal ruler.

[0013] Furthermore, two grooves are provided on the bottom surface of the horizontal ruler along the length direction, and the two grooves are symmetrically arranged on both sides of the vertical ruler; a movable ruler is slidably arranged in the groove, and the movable ruler is at least used to cooperate with the groove to clamp the realisation factor cylinder.

[0014] Furthermore, the movable ruler includes a sliding part and a fixed part; the sliding part and the horizontal ruler are slidably connected, and the fixed part is used for relative fixation of the sliding part after it is adjusted into place.

[0015] Furthermore, a scale line is provided on the upper edge of the groove.

[0016] Furthermore, a magnetic attraction piece is provided at the bottom end of the vertical ruler, and the magnetic attraction piece is used to detect whether debris falls into the circular hole on the cover plate of the augmentation factor cylinder.

[0017] Furthermore, a receiving cavity is provided at the bottom end of the vertical ruler, and the magnetic attraction component is installed in the receiving cavity.

[0018] Furthermore, the electronic detection component is arranged at the top of the vertical ruler; the electronic detection component includes a sensor element and an electronic display element, and the electronic display element is electrically connected to the sensor element; the sensor element is used to detect the vertical distance between the sensor element and the horizontal ruler, and the electronic display element is used to calculate and display the corresponding augmentation factor size according to the distance detected by the sensor element.

[0019] Furthermore, the sensing element is a distance measuring sensor.

[0020] The beneficial effects of the utility model are:

[0021] 1. The utility model provides a ruler for measuring the concrete compaction factor, which can well solve the problems existing in the prior art. The prior art reading is cumbersome and has large visual errors, and requires detection personnel with rich operating experience to reduce the reading error. The utility model is based on the current standard and still maintains the ruler design, but abandons the original manual reading mode of the nut fixing the vertical ruler at the upper end of the vertical ruler, and adopts a digital display direct reading mode, which makes the ruler reading more convenient and quick, can reduce errors to a great extent, and greatly improves the efficiency and accuracy of the concrete compaction factor detection technology.

[0022] 2. The utility model provides a ruler for measuring the compaction factor of concrete. A groove with a relatively long length is arranged on the horizontal ruler. A slidable movable ruler is matched in the groove. The matching of the groove and the movable ruler can not only stably install the ruler on the compaction factor cylinder without swinging left and right, but also effectively verify the inner diameter of the compaction factor cylinder, thereby avoiding the unverified measurement result due to the problem of the compaction factor cylinder.

[0023] 3. The utility model provides a ruler for measuring the concrete compaction factor. By designing a magnetic suction piece at the bottom of the vertical ruler, the ruler can quickly detect whether debris has fallen into the circular hole on the compaction factor cylinder cover plate, thereby preventing the debris from affecting the measurement result of the compaction factor.

[0024] The measuring ruler provided by the utility model is convenient to manufacture and simple to operate, and can be completed by beginners. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the overall structure of a ruler for measuring the concrete compaction factor provided by the utility model;

[0026] Figure 2 It is a schematic diagram of the horizontal ruler structure provided by the utility model;

[0027] Figure 3 It is a schematic diagram of the vertical ruler structure provided by the utility model;

[0028] In the attached figure:

[0029] 10- horizontal ruler, 11- guide surface, 12- T-shaped fixing piece, 13- groove, 14- movable ruler;

[0030] 20-vertical ruler, 21-waist-shaped long hole, 22-magnetic attraction part, 23-electronic detection component. DETAILED DESCRIPTION

[0031] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific implementation methods, but the present invention is not limited to the following embodiments.

[0032] Embodiment 1:

[0033] See attached Figures 1 to 3 The utility model discloses a ruler for measuring the compaction factor of concrete, such as Figure 1 As shown, it includes a horizontal ruler 10 and a vertical ruler 20, which are arranged vertically. The horizontal ruler 10 is defined as the left-right direction along its length, and the vertical ruler 20 is defined as the up-down direction along its length. The vertical ruler 20 is vertically connected to the middle of the horizontal ruler 10 and can slide up and down relative to the horizontal ruler 10. An electronic detection component 23 is provided on the vertical ruler 20. The electronic detection component 23 is used to detect the descending height of the vertical ruler 20 and obtain the corresponding concrete solidification factor according to the descending height. Preferably, the electronic detection component 23 is arranged at the top of the vertical ruler 20. For example, the electronic detection component 23 can measure the vertical distance from the top of the vertical ruler 20 to the horizontal ruler 10. During measurement, when the bottom end of the vertical ruler 20 contacts the small circular hole in the center of the cover plate of the solidification factor cylinder, the electronic detection component 23 is started, and the electronic detection component 23 detects the descending height of the vertical ruler 20 at this time, and obtains the corresponding concrete solidification factor according to the descending height. The ruler material can be made of high-strength plastic, and the dimensions of the horizontal ruler 10 and the vertical ruler 20 meet the standard requirements. Preferably, the thickness of the vertical ruler 20 is 10 mm, and the thickness of the horizontal ruler 10 is 15 mm. For example, the dimensions of the horizontal ruler 10 are designed to be 180×20×15 mm, and the dimensions of the upper end of the vertical ruler 20 are designed to be 18×4×10 mm, and the bottom end is 8×4×5 mm. It can be understood that the specific dimensions of the horizontal ruler 10 and the vertical ruler 20 are not limited in this embodiment.

[0034] Embodiment 2:

[0035] See attached Figures 1 to 3 On the basis of Example 1, Figure 2 As shown, in this embodiment, a guide surface 11 is further provided on the horizontal ruler 10, and the guide surface 11 is used to guide the vertical ruler 20 to be in a vertical state to ensure the accuracy of the measurement result. For example, the guide surface 11 can be a rectangular groove, the left and right side walls of the rectangular groove are perpendicular to the length direction of the horizontal ruler 10, the left and right widths of the rectangular groove match the width of the vertical ruler 20, and the vertical ruler 20 passes through the guide surface 11 and is connected to the horizontal ruler 10.

[0036] In this embodiment, the vertical ruler 20 is provided with a waist-shaped long hole 21 along the length direction, and the waist-shaped long hole 21 is a through hole. A T-shaped fixing piece 12 is provided on the horizontal ruler 10, and the T-shaped fixing piece 12 passes through the waist-shaped long hole 21 and is threadedly connected to the horizontal ruler 10. For example, the T-shaped fixing piece 12 is a nut. When measuring, the T-shaped fixing piece 12 is loosened to allow the vertical ruler 20 to slide up and down. When the bottom end of the vertical ruler 20 is inserted into the small circular hole in the center of the cover plate, the T-shaped fixing piece 12 is tightened to fix the vertical ruler 20, and finally the augmentation factor is measured by the electronic detection component 23.

[0037] In this embodiment, two grooves 13 are provided on the bottom surface of the horizontal ruler 10 along the length direction, and the two grooves 13 are symmetrically arranged on both sides of the vertical ruler 20, and movable rulers 14 are slidably arranged in the two grooves 13. When the horizontal ruler 10 is installed on the solidification factor cylinder, the two grooves 13 away from the vertical ruler 20 are both close to the outer side of the solidification factor cylinder wall, and the two movable rulers 14 on the horizontal ruler 10 are slid respectively to be attached to the inner side of the solidification factor cylinder wall, so that the movable ruler 14 and the grooves 13 cooperate to clamp the side wall of the solidification factor cylinder, so that the ruler will not swing left and right during measurement. Specifically, the movable ruler 14 includes a sliding part and a fixed part, the sliding part is slidably connected to the horizontal ruler 10, and the fixed part is used for relative fixation after the sliding part is adjusted into place, for example, the fixed part can be a nut.

[0038] In this embodiment, the upper edge of the groove 13 is provided with a scale line. Specifically, the scale line is set on the scale surface of the horizontal ruler 10 and corresponds to the position of the groove 13. When the horizontal ruler 10 is installed on the solidification factor cylinder, the inner diameter of the solidification factor cylinder can be calculated by the relative distance between the two movable rulers 14, so as to verify whether the solidification factor cylinder is deformed. Specifically, if the measured reading is equal to the inner diameter of the standard solidification factor cylinder, it means that the solidification factor cylinder has not been deformed; if the measured reading is less than the inner diameter of the standard solidification factor cylinder, it means that the solidification factor cylinder has been deformed, and the solidification factor cylinder should be replaced in time before measurement.

[0039] At the same time, if Figure 3 As shown, the ruler provided by the utility model is also provided with a magnetic member 22 at the bottom of the vertical ruler 20. For example, a receiving cavity may be provided at the bottom of the vertical ruler 20, and the magnetic member 22 is installed in the receiving cavity. The magnetic member 22 is used to detect whether debris has fallen into the circular hole on the cover plate of the augmentation factor cylinder. Specifically, the bottom end of the vertical ruler 20 is inserted into the small circular hole in the center of the cover plate, and then gently lifted to feel whether there is magnetic force. If there is magnetic force, it means that there are no impurities in the circular hole. If there is no magnetic force, it means that the bottom of the circular hole on the cover plate has accidentally fallen into debris, which should be cleaned in time before measurement.

[0040] In this embodiment, the electronic detection component 23 is arranged at the top of the vertical ruler 20, and the electronic detection component 23 includes a sensor element and an electronic display element, and the electronic display element is electrically connected to the sensor element. The sensor element is used to detect the vertical distance between the sensor element and the horizontal ruler 10, and the electronic display element is used to calculate and display the corresponding augmentation factor size according to the distance detected by the sensor element. Among them, the sensor element can be a distance sensor, and the distance sensor can measure the distance between it and the T-shaped fixing piece 12. When the electronic signal of the distance sensor is emitted from the top of the vertical ruler 20, it reaches the fixed position of the vertical ruler 20, is blocked by the T-shaped fixing piece 12, and then returns to the emission end, the distance between the top and the T-shaped fixing piece 12 can be calculated by the time difference between the emission and the return. The electronic display element calculates and displays the corresponding augmentation factor size according to the distance detected by the distance sensor, and its augmentation factor calculation principle can be based on the standard "Concrete Mixture Consistency Test Method Jump Table Augmentation Method" TB / T2181-90 issued by the former Ministry of Railways.

[0041] The specific process of measuring the concrete solidification factor by the ruler provided by the utility model is as follows:

[0042] 1. Put the accurately weighed concrete into the compaction factor cylinder, scrape it flat, cover it with a cover plate, put it on the jumping table and vibrate it 1 time / s for a total of 15 times;

[0043] 2. Place the horizontal ruler 10 of the ruler at the mouth of the tube, so that one end of the slot at both ends is close to the outer side of the wall of the solidification factor tube, slide the two movable rulers 14 on the horizontal ruler 10 respectively, so that they are close to the inner side of the wall of the solidification factor tube, tighten the fixing part to fix it, and read the reading to verify the inner diameter of the solidification factor tube. If the measured reading is equal to the inner diameter of the standard solidification factor tube, it means that the solidification factor tube has not been deformed; if the measured reading is less than the inner diameter of the standard solidification factor tube, it means that the solidification factor tube has been deformed, and the solidification factor tube should be replaced in time before measurement.

[0044] 3. Loosen the T-shaped fixing piece 12 that fixes the vertical ruler 20, slide the vertical ruler 20 up and down, insert the bottom end of the vertical ruler 20 into the small circular hole in the center of the cover plate, and then gently lift it up to feel whether there is magnetic force. If there is magnetic force, it means there are no impurities in the circular hole. If there is no magnetic force, it means that the bottom of the circular hole on the cover plate has accidentally fallen into debris, which should be cleaned in time before measuring.

[0045] 4. After the bottom is verified, insert the bottom end of the vertical ruler 20 into the small circular hole in the center of the cover plate, tighten the T-shaped fixing 12 to fix the vertical ruler 20, press the measurement button on the upper end of the electronic detection component 23, and record the number on the electronic display element, which is the concrete compaction factor JC. The measurement result can be accurate to 0.01.

[0046] The concrete compaction factor was tested using the ruler of the prior art and the ruler disclosed in the utility model respectively, and a total of ten tests were conducted, and the comparative error results are shown in Table 1. Among them, JC1 is the measurement result using the ruler of the prior art, JC2 is the measurement result using the ruler disclosed in the utility model, and Δ is the error between the two.

[0047] Table 1 Test results statistics

[0048] <![CDATA[JC1]]> 1.13 1.17 1.08 1.24 1.19 1.20 1.11 1.34 1.28 1.32 <![CDATA[JC2]]> 1.13 1.17 1.08 1.24 1.19 1.20 1.11 1.34 1.28 1.32 Δ 0.0％ 0.0％ 0.0％ 0.0％ 0.0％ 0.0％ 0.0％ 0.0％ 0.0％ 0.0％

[0049] The test results show that the measurement accuracy of the ruler designed in this scheme and the existing ruler reaches 100%, which proves the feasibility of the technical scheme of the utility model.

[0050] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0051] In the description of the present invention, "first feature" or "second feature" may include one or more of the features.

[0052] In the description of the present invention, "plurality" means two or more.

[0053] In the description of the present invention, a first feature being “above” or “below” a second feature may include that the first and second features are directly in contact with each other, or may include that the first and second features are not in direct contact but are in contact with each other via another feature therebetween.

[0054] In the description of the present invention, a first feature “above”, “over” and “above” a second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is horizontally higher than the second feature.

[0055] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", "some examples", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0056] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A ruler for measuring the compaction factor of concrete, characterized in that: The invention comprises a horizontal ruler (10) and a vertical ruler (20); the vertical ruler (20) is vertically connected to the middle of the horizontal ruler (10) and can slide up and down relative to the horizontal ruler (10); the horizontal ruler (10) is used to cooperate with a solidification factor cylinder; the vertical ruler (20) is provided with an electronic detection component (23), and the electronic detection component (23) is used to detect the descending height of the vertical ruler (20), and obtain the corresponding concrete solidification factor according to the descending height.

2. A ruler for measuring the concrete compaction factor according to claim 1, characterized in that: The horizontal ruler (10) is provided with a guide surface (11), and the guide surface (11) is used to guide the vertical ruler (20) to be in a vertical state.

3. A ruler for measuring the concrete compaction factor according to claim 1, characterized in that: The vertical ruler (20) is provided with a waist-shaped long hole (21) along the length direction; the horizontal ruler (10) is provided with a T-shaped fixing piece (12), and the T-shaped fixing piece (12) passes through the waist-shaped long hole (21) and is threadedly connected to the horizontal ruler (10).

4. A ruler for measuring the concrete compaction factor according to claim 1, characterized in that: The bottom surface of the horizontal ruler (10) is provided with two grooves (13) along the length direction, and the two grooves (13) are symmetrically arranged on both sides of the vertical ruler (20); a movable ruler (14) is slidably arranged in the groove (13), and the movable ruler (14) is at least used to cooperate with the groove (13) to clamp the solidification factor cylinder.

5. A ruler for measuring the concrete compaction factor according to claim 4, characterized in that: The movable ruler (14) comprises a sliding part and a fixed part; the sliding part is slidably connected to the horizontal ruler (10), and the fixed part is used for relative fixation of the sliding part after it is adjusted into place.

6. A ruler for measuring the concrete compaction factor according to claim 4, characterized in that: The upper edge of the groove (13) is provided with scale lines.

7. A ruler for measuring the concrete compaction factor according to claim 1, characterized in that: A magnetic attraction member (22) is provided at the bottom end of the vertical ruler (20), and the magnetic attraction member (22) is used to detect whether debris has fallen into the circular hole on the cover plate of the augmentation factor cylinder.

8. A ruler for measuring the concrete compaction factor according to claim 7, characterized in that: A receiving cavity is provided at the bottom end of the vertical ruler (20), and the magnetic attraction member (22) is installed in the receiving cavity.

9. A ruler for measuring the concrete compaction factor according to claim 1, characterized in that: The electronic detection component (23) is arranged at the top of the vertical ruler (20); the electronic detection component (23) comprises a sensor element and an electronic display element, and the electronic display element is electrically connected to the sensor element; the sensor element is used to detect the vertical distance between the sensor element and the horizontal ruler (10), and the electronic display element is used to calculate and display the corresponding augmentation factor size according to the distance detected by the sensor element.

10. A ruler for measuring the concrete compaction factor according to claim 9, characterized in that: The sensing element is a distance measuring sensor.

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