An angle-adjustable concrete surface hardness scratch comparison block

Abstract

The utility model discloses an angle adjustable concrete surface hardness scratch comparison block relates to concrete detection equipment field. It includes the mutual parallel preset track, the sliding base of track sliding cooperation, the door type support of fixed in the base, and the top threaded connection adjusting screw rod of support, and the horizontal limiting rod of rectangular through -slot is equipped with the lower end of screw rod, and the limiting rod is equipped with the locking sleeve, and the locking sleeve is connected telescopic link and the base is connected at the bottom end of telescopic link, and the vertical support foot of support is equipped with scratch comparison block. The utility model solves the inconvenient of the test position adjustment of existing device, and scratch angle is difficult to adjust and is easy to loosen, and scratch plate is easy to deviate, and the problem such as comparison is complicated, adjusts the test position through sliding base, and adjusting screw rod adjusts height, and limiting rod rotates and guides scratch plate and adjusts angle, and locking sleeve fixes angle, and telescopic link enhances stability, realizes convenient accurate test, and effectively improves detection efficiency and result accuracy.

Description

Technical Field

[0001] This utility model provides a scratch comparison block, and particularly relates to an adjustable-angle concrete surface hardness scratch comparison block. Background Technology

[0002] The concrete surface hardness scratch test device is a specialized tool used to evaluate the surface hardness of concrete. Its main function is to form controllable scratches on the concrete surface and compare the depth, shape, and other characteristics of the scratches with a standard comparison block to determine the hardness level of the concrete surface. It is widely used in fields such as building engineering quality inspection and concrete material performance research, providing important basis for project acceptance and material improvement.

[0003] Existing concrete surface hardness scratch testing devices typically include basic structures such as a base track, sliding seat, support structure, and scratch components. The base track is often a single, fixed structure, and the sliding seat's adjustment on the track is not smooth enough and has low positioning accuracy, making it inconvenient to adjust the test position. The support structure is often fixed or simply foldable, making it difficult to flexibly adjust the overall height to adapt to different testing scenarios. The angle adjustment mechanism in the scratch components is rudimentary, often using bolts for direct fixation, which is cumbersome to adjust and prone to loosening after fixing, resulting in poor consistency of scratch angles and affecting comparison accuracy. Furthermore, the scratch plate lacks an effective guiding structure during sliding, making it prone to displacement, and the overall stability of the device is insufficient, especially when performing multi-angle, multi-position tests, where vibration and other factors can affect test accuracy. These shortcomings limit the existing devices in terms of ease of operation, testing accuracy, and applicability. Utility Model Content

[0004] To address the aforementioned issues, this application provides an adjustable-angle concrete surface hardness scratch comparison block, which solves the problems of cumbersome scratch angle adjustment, inconvenient test position movement, easy slippage of the scratch plate, and poor overall stability in existing devices, effectively improving the convenience and accuracy of concrete hardness testing.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution: an adjustable-angle concrete surface hardness scratch comparison block, comprising:

[0006] Two pre-set tracks that are parallel to each other;

[0007] A sliding base that slides in conjunction with the preset track, the sliding base being able to slide along the length of the preset track to adjust the test position;

[0008] Support components are provided on the sliding base;

[0009] The support components include:

[0010] A gate-shaped bracket, with two vertical legs fixed to the sliding base; each vertical leg is provided with a scratch comparison block;

[0011] An adjusting screw is inserted through the top of the bracket and extends vertically. The adjusting screw is threaded into the bracket to achieve lifting adjustment.

[0012] A limiting rod is sleeved on the lower end of the adjusting screw. The limiting rod is horizontally arranged and has a through groove extending along its own length. The through groove is used for the scratch plate to pass through and assist the scratch plate to slide. The limiting rod can rotate relative to the adjusting screw to adjust the scratch angle.

[0013] And a locking sleeve fitted outside the limiting rod, the locking sleeve being used to fix the rotation angle of the limiting rod, and a telescopic rod being fixedly connected to one side of the locking sleeve, the telescopic rod being used to assist in stabilizing and adjusting the overall height.

[0014] Preferably, the preset track is elongated and has uniformly distributed limiting structures along its length, and the bottom of the sliding base has a sliding mating part adapted to the preset track.

[0015] Preferably, the sliding base is provided with an installation platform, the two vertical legs of the bracket are fixedly connected to the installation platform by fasteners, and the end of the telescopic rod away from the locking sleeve is fixedly connected to the installation platform.

[0016] Preferably, the top of the adjusting screw is provided with a knob, which is cylindrical and has anti-slip texture on its outer surface.

[0017] Preferably, the limiting rod is a cylindrical rod, the through groove is a rectangular through groove opened along the axial direction of the limiting rod, and the cross-sectional shape of the scratch plate is adapted to the through groove.

[0018] Preferably, the locking sleeve consists of two semi-cylindrical clamping blocks, which are fixedly connected by a detachable connector to clamp the limiting rod.

[0019] Preferably, the telescopic rod is a telescopic rod-shaped structure, including an inner rod and an outer tube that are nested together. The inner rod is fixedly connected to the locking sleeve, and the bottom end of the outer tube is fixedly connected to the installation platform.

[0020] One or more technical solutions provided in this application have at least the following technical effects or advantages compared with the prior art:

[0021] This device primarily addresses existing problems in concrete surface hardness testing, such as difficulty in adjusting the scratch angle, inconvenience in adjusting the test position, unstable sliding of the scratch plate leading to angle deviation, poor overall device stability, and inflexible height adjustment. Specifically, it solves these problems through the following methods: Two parallel preset tracks slide in conjunction with a sliding base, allowing the base to slide flexibly along the length of the preset tracks, facilitating easy adjustment of the test position to suit different test areas; a gate-shaped support is fixed to the sliding base's mounting platform by vertical supports, and an adjusting screw at its top engages with the support's threads, allowing for height adjustment by rotating a knob with anti-slip textures on the top, thus changing the height of the limit rod to adapt to different testing needs; a horizontally positioned limit rod is fitted under the adjusting screw. The device features a rectangular through-slot extending along its length for the scratch plate to pass through and assist in its stable sliding. A limiting rod can rotate relative to the adjusting screw to flexibly adjust the scratch angle. A locking sleeve composed of two semi-cylindrical clamping blocks clamps the limiting rod via a detachable connector, ensuring a stable fixation of the adjusted angle and guaranteeing consistent scratch angles for later comparison. A telescopic rod fixed to one side of the locking sleeve consists of an inner rod and an outer tube that interlock. The inner rod connects to the locking sleeve, and the bottom of the outer tube is fixed to the mounting platform. This enhances the overall stability of the device and allows for flexible height adjustment with the adjusting screw. Additionally, scratch comparison blocks on the vertical support legs facilitate direct comparison of scratch results, thereby comprehensively improving the convenience, accuracy, and stability of concrete surface hardness testing.

[0022] Other advantages, objectives and features of this invention will be set forth in part in the description which follows, and in part will be apparent to those skilled in the art from the following examination or study, or may be taught from the practice of this invention. Attached Figure Description

[0023] Figure 1 This is a three-dimensional schematic diagram of an adjustable-angle concrete surface hardness scratch comparison block according to the present invention.

[0024] Figure 2 This is an exploded view of a concrete surface hardness scratch comparison block with an adjustable angle according to the present invention.

[0025] Figure 3 This is a three-dimensional schematic diagram of the locking sleeve portion of an adjustable-angle concrete surface hardness scratch comparison block according to the present invention.

[0026] As shown in the figure:

[0027] 1. Pre-set track; 2. Sliding base; 3. Support components; 4. Bracket;

[0028] 41. Vertical support legs; 42. Scratch comparison block;

[0029] 5. Adjusting screw; 6. Limiting rod; 7. Through groove; 8. Locking sleeve; 9. Telescopic rod. Detailed Implementation

[0030] 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.

[0031] It should be noted that the terms "vertical," "horizontal," "up," "down," "left," "right," and similar expressions used in this article are for illustrative purposes only and do not represent the only possible implementation.

[0032] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains; the terminology used herein in the description of this invention is for the purpose of describing particular embodiments only and is not intended to limit the invention; the term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0033] like Figure 1 and Figure 2 As shown, an adjustable-angle concrete surface hardness scratch comparison block includes two preset tracks 1 arranged parallel to each other. A sliding base 2 that slides along the length of the preset track 1 can adjust the test position. A support component 3 is provided on the sliding base 2. The support component 3 includes a gate-shaped bracket 4. Two vertical legs 41 of the bracket 4 are fixed on the sliding base 2 and scratch comparison blocks 42 are provided on the vertical legs 41. An installation platform is also provided on the sliding base 2. The two vertical legs 41 of the bracket 4 are fixedly connected to the installation platform by fasteners. The preset track 1 is long and has a uniformly distributed limiting structure along its length. The bottom of the sliding base 2 is provided with a sliding mating part that is adapted to the preset track 1.

[0034] In this embodiment, two preset tracks 1 are arranged in parallel intervals. The sliding mating part at the bottom of the sliding base 2 matches the outline of the preset track 1 and forms a sliding connection. The sliding base 2 can move back and forth along the preset track 1 through the sliding mating part. After moving to the target position, it is positioned by the limiting structure on the preset track 1. The gate-shaped structure of the bracket 4 is integrally formed by two vertical support legs 41 and the top horizontal plate. The two vertical support legs 41 are respectively vertically fixed to the two sides of the mounting platform of the sliding base 2, and are fastened to the preset screw holes of the mounting platform by bolts, nuts and other fasteners. The scratch comparison block 42 is fixed on the side wall of the vertical support leg 41 facing the test area. From the perspective of implementation, the elongated design and uniform limiting structure of the pre-set track 1 ensure the accuracy of adjustment and the stability of positioning of the sliding base 2. The gantry bracket 4, connected to the installation platform by fasteners, ensures the overall structural strength of the support component 3. In terms of innovation and beneficial effects, this structural combination overcomes the limitations of existing devices, such as inconvenient test position adjustment and unstable support. The sliding cooperation between the sliding base 2 and the pre-set track 1 enables flexible switching between multi-area tests. The limiting structure effectively prevents the sliding base 2 from shifting during testing. The scratch comparison block 42 integrated on the vertical support 41 eliminates the need for additional comparison tools, enabling instant comparison between scratches and standards, thus improving testing efficiency. In addressing existing problems, the elongated shape and limiting structure of the pre-set track 1 solve the problem of low positioning accuracy of existing basic tracks; the sliding cooperation of the sliding base 2 solves the problem of poor sliding of existing sliding seats; the fastener connection between the bracket 4 and the installation platform solves the problem of easy loosening of existing support structures; and the scratch comparison block 42 solves the problem of inconvenient comparison during existing tests.

[0035] like Figure 2 and Figure 3 As shown, the device also includes an adjusting screw 5 that passes through the top of the bracket 4 and extends vertically. The adjusting screw 5 is threaded with the bracket 4 to achieve lifting adjustment, and its top is provided with a cylindrical knob with anti-slip texture on the outer surface. A horizontally positioned limiting rod 6 is sleeved on the lower end of the adjusting screw 5. The limiting rod 6 is a cylindrical rod body with a rectangular through groove 7 extending along its own length. The through groove 7 is used for the scratch plate to pass through and assist its sliding. The limiting rod 6 can rotate relative to the adjusting screw 5 to adjust the scratch angle. A locking sleeve 8 composed of two semi-cylindrical clamping blocks is sleeved on the outside of the limiting rod 6. The two clamping blocks are fixedly connected by a detachable connector to clamp the limiting rod 6. A telescopic rod 9 is fixedly connected to one side of the locking sleeve 8. The telescopic rod 9 is a telescopic rod structure and includes an inner rod and an outer tube that are nested together. The inner rod is fixedly connected to the locking sleeve 8, and the bottom end of the outer tube is fixedly connected to the mounting platform to assist in stabilization and adjust the overall height.

[0036] In this embodiment, the adjusting screw 5 is vertically inserted into the pre-set threaded hole at the top of the bracket 4, and is detachably connected to the bracket 4 through thread engagement. The cylindrical knob at the top is integrally formed with the screw, and the anti-slip texture on the outer surface is evenly distributed in a ring. The lower end of the adjusting screw 5 is provided with a circular through hole, and the limiting rod 6 is transversely inserted into the through hole to form a rotational fit, so that the limiting rod 6 can rotate 360° around the axis of the adjusting screw 5. The rectangular through groove 7 of the limiting rod 6 runs through the upper and lower surfaces of the rod body. The groove width is adapted to the thickness of the scratch plate, and the groove length is slightly shorter than the length of the limiting rod 6. The inner sides of the two semi-cylindrical clamps of the locking sleeve 8 are provided with anti-slip texture. One end is connected by a hinge, and the other end is locked by detachable connecting parts such as bolts and nuts, and is sleeved in the middle of the limiting rod 6. The top of the inner rod of the telescopic rod 9 is welded and fixed to the outer wall of the locking sleeve 8, and the bottom end of the outer tube is fixed to the mounting platform of the sliding base 2 by bolts. The inner rod and the outer tube are fixed after telescopic extension by radial positioning bolts. From the perspective of implementation, the precision threaded fit between the adjusting screw 5 and the bracket 4 ensures the stability and accuracy of height adjustment, while the anti-slip knob reduces the probability of slippage during operation; the rotational fit between the limit rod 6 and the adjusting screw 5, as well as the size adaptation of the rectangular through groove 7, ensures the flexibility of angle adjustment and the straightness of the scratch plate sliding; the split design and anti-slip structure of the locking sleeve 8 improve the reliability of angle fixing, while the sleeve structure of the telescopic rod 9 achieves a balance between support stability and height adaptability. From the perspective of innovation and beneficial effects, this structural combination overcomes the limitations of existing devices, such as cumbersome angle adjustment, scratch deviation, and insufficient stability: the lifting adjustment of the adjusting screw 5 solves the problem of the non-adjustable height of the existing support structure, and the anti-slip knob improves the ease of operation; the rotational cooperation of the limiting rod 6 and the design of the through groove 7 not only realize the flexible adjustment of the scratch angle, but also prevent the scratch plate from shifting through the through groove guide, ensuring the consistency of the scratch direction; the clamping and fixing of the locking sleeve 8 solves the problem of easy loosening after angle adjustment, ensuring the uniformity of the comparison benchmark; the telescopic rod 9, through its fixed connection with the installation platform, enhances the overall stability of the limiting rod 6 and the locking sleeve 8, avoids structural shaking caused by vibration during testing, and further improves the testing accuracy.

[0037] When installing this device, the concrete base surface of the test area must first be pre-treated. Use a handheld grinder to smooth the raised parts of the base surface, and then use a vacuum cleaner to clean the surface dust and impurities. Then, determine the laying position of the preset track according to the test range, use a chalk line to mark the parallel baseline, use an impact drill to drill holes at the baseline mark, insert expansion bolts, align the track with the bolts, and tighten them with a wrench. During the fixing process, use a spirit level to ensure that the two tracks are on the same horizontal plane. If there is a height deviation, metal shims of different thicknesses can be inserted into the bottom of the track for adjustment. When installing the sliding base, align its bottom sliding mating part with the end of the track and slowly push it in. If there is jamming during the pushing process, apply a small amount of graphite powder to reduce friction. Then, use a scriber to mark the installation position of the vertical support foot of the bracket on the installation platform of the sliding base. Drill holes at the marked positions with a bench drill and tap to form threaded holes. After placing the bracket in place, tighten the bolts with a screwdriver. When tightening, use a diagonal tightening method to prevent the bracket from tilting. During the debugging phase, first rotate the knob at the top of the adjusting screw, and at the same time use a laser level to project the baseline onto the surface of the limit rod to ensure that the limit rod is in a horizontal state. If the height is insufficient, continue to rotate the knob to raise it; if it is too high, rotate it in the opposite direction to lower it. Next, loosen the connecting parts of the locking sleeve, rotate the limit rod to the preset test angle, measure and confirm with an angle gauge, and then tighten the connecting parts. Then adjust the length of the telescopic rod so that the bottom end of the outer tube contacts the installation platform and is fixed by the positioning bolts. After fixing, gently push the limit rod to check whether it is stable. When using, first insert the scratching plate into one end of the through groove of the limiting rod, push the scratching plate so that its bottom end contacts the concrete base surface, then push the sliding base along the track to the first test point, insert the limiting pin on the track into the positioning hole of the sliding base to fix it, then hold the top of the scratching plate and apply pressure at a uniform speed and slide it along the through groove. After the scratch is formed, immediately use a soft ruler to measure the scratch length. At the same time, place the scratch comparison block close to the scratch for visual comparison. If a precise evaluation is required, a digital depth gauge can be used to measure the scratch depth. After recording the data, pull out the limiting pin and move to the next test point to repeat the operation. After testing, first use a brush to clean the debris from the groove and the surface of the scratch comparison block. Then, use a cotton cloth soaked in industrial alcohol to wipe the surface of the metal parts. For the threads of the adjusting screw, apply grease to prevent rust. Finally, remove the scratch plate and place it in a dry storage box. Loosen the telescopic rod and the adjusting screw to lower the entire device for easy handling and storage. During regular maintenance, use a torque wrench to check the tightening torque of each fastener and use a feeler gauge to check the fit clearance between the sliding base and the track. If the clearance is too large, the wear-resistant lining can be replaced for adjustment.

[0038] Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make various modifications and alterations without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention should be determined by the claims.

Claims

1. An adjustable-angle concrete surface hardness scratch comparison block, characterized in that, include: Two pre-set tracks that are parallel to each other (1); A sliding base (2) that slides in conjunction with the preset track (1) can slide along the length of the preset track (1) to adjust the test position; The support assembly (3) is disposed on the sliding base (2); The support component (3) includes: A door-shaped bracket (4) has two vertical legs (41) fixed to the sliding base (2); the vertical legs (41) are provided with scratch comparison blocks (42); An adjusting screw (5) is inserted through the top of the bracket (4) and extends vertically. The adjusting screw (5) is threadedly engaged with the bracket (4) to achieve lifting adjustment. A limiting rod (6) is sleeved on the lower end of the adjusting screw (5). The limiting rod (6) is horizontally arranged and has a through groove (7) extending along its own length direction. The through groove (7) is used for the scratch plate to pass through and assist the scratch plate to slide. The limiting rod (6) can rotate relative to the adjusting screw (5) to adjust the scratch angle. And a locking sleeve (8) sleeved outside the limiting rod (6), the locking sleeve (8) is used to fix the rotation angle of the limiting rod (6), and a telescopic rod (9) is fixedly connected to one side of the locking sleeve (8), the telescopic rod (9) is used to assist in stabilizing and adjusting the overall height.

2. The adjustable-angle concrete surface hardness scratch comparison block according to claim 1, characterized in that, The preset track (1) is long and has uniformly distributed limiting structures along its length. The bottom of the sliding base (2) is provided with a sliding mating part that is compatible with the preset track (1).

3. The adjustable-angle concrete surface hardness scratch comparison block according to claim 1, characterized in that, The sliding base (2) is provided with an installation platform. The two vertical legs (41) of the bracket (4) are fixedly connected to the installation platform by fasteners. The end of the telescopic rod (9) away from the locking sleeve (8) is fixedly connected to the installation platform.

4. The adjustable-angle concrete surface hardness scratch comparison block according to claim 1, characterized in that, The top of the adjusting screw (5) is provided with a knob, which is cylindrical and has anti-slip texture on its outer surface.

5. The adjustable-angle concrete surface hardness scratch comparison block according to claim 1, characterized in that, The limiting rod (6) is a cylindrical rod, the through groove (7) is a rectangular through groove opened along the axial direction of the limiting rod (6), and the cross-sectional shape of the scratch plate is adapted to the through groove (7).

6. The adjustable-angle concrete surface hardness scratch comparison block according to claim 1, characterized in that, The locking sleeve (8) consists of two semi-cylindrical clamping blocks, which are fixedly connected by a detachable connector to clamp the limiting rod (6).

7. The adjustable-angle concrete surface hardness scratch comparison block according to claim 3, characterized in that, The telescopic rod (9) is a telescopic rod-shaped structure, including an inner rod and an outer tube that are nested together. The inner rod is fixedly connected to the locking sleeve (8), and the bottom end of the outer tube is fixedly connected to the installation platform.

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