Concrete surface flatness detection device

Abstract

The utility model provides a concrete surface flatness detection device. The concrete surface flatness detection device comprises two guide rails, a positioning plate, a lifting rod and a distance measuring component, the two guide rails are arranged on the two sides of the detection area respectively, and each guide rail is fixedly provided with a gradienter used for detecting the horizontal state of the guide rail. The positioning plate is arranged between the two guide rails in a sliding manner and is in transmission connection with a linear driving component; the positioning plate is in sliding connection with an alignment piece, and the alignment piece is in transmission connection with a reciprocating driving component; the lifting rod is slidably connected to the alignment piece, and an elastic driving piece is arranged between the lifting rod and the alignment piece. The distance measuring component is arranged on the alignment piece and used for detecting the moving distance of the lifting rod in the vertical direction. According to the concrete surface flatness detection device provided by the invention, through cooperation of the linear driving component and the reciprocating driving component, the detection range of the concrete surface is flexibly adjusted, so that the concrete surface flatness condition in the whole detection area is reflected, and the concrete surface flatness detection efficiency and the result reliability are ensured.

Description

Technical Field

[0001] This application belongs to the field of concrete surface construction testing technology, specifically relating to a concrete surface flatness testing device. Background Technology

[0002] Concrete surface flatness refers to the degree of height deviation between the concrete forming surface and the design target plane during construction. The significance of testing it is to ensure project quality, avoid affecting the functionality of the project due to uneven surface (such as equipment installation accuracy, floor load-bearing capacity, or drainage effect), and reduce later repair costs to meet acceptance specifications.

[0003] In existing technologies, tools such as straightedges, levels, or laser rangefinders are typically used to detect the maximum gap value. When using a level to check the flatness of a concrete surface, the level is first placed stably on the surface to be tested, and the position of the bubble is observed to see if it is centered. If it is centered, it indicates that the surface is level; if it is offset, it indicates a height difference. By measuring and recording data at multiple points and comparing the level deviation values ​​at each measuring point, the overall flatness can be assessed.

[0004] The inventors discovered that the level instrument can only detect the flatness of a concrete surface in a very small area, and cannot reflect the flatness of a large section of concrete surface. Furthermore, the method of manually conducting multiple tests at different locations is time-consuming and labor-intensive, and there is also the possibility of data errors due to the instability of human operation. Utility Model Content

[0005] This application provides a concrete surface flatness testing device, which aims to flexibly adjust the testing range of the concrete surface to reflect the flatness of the concrete surface within the entire testing area, thereby ensuring the efficiency and reliability of the concrete surface flatness testing results.

[0006] To achieve the above objectives, the technical solution adopted in this application is as follows:

[0007] A device for detecting the flatness of a concrete surface is provided, comprising:

[0008] Two guide rails are fixed on both sides of the detection area and are arranged parallel to each other; each guide rail is equipped with a level to ensure that the length direction of the guide rail is parallel to the horizontal plane.

[0009] A positioning plate is slidably disposed between two guide rails and is driven by a linear drive component for moving it; an alignment component is slidably connected to the positioning plate, the sliding direction of the alignment component is perpendicular to the sliding direction of the positioning plate, and the alignment component is driven by a reciprocating drive component.

[0010] A lifting rod is slidably connected to the alignment member in the vertical direction, and an elastic driving member is provided between the lifting rod and the alignment member to move the lifting rod downward to abut the detection surface; and

[0011] A ranging component is fixedly mounted on the alignment component and oriented toward the lifting rod to detect the distance the lifting rod moves in the vertical direction.

[0012] In one possible implementation, the lower end face of the alignment member is provided with a guide groove, and the lifting rod is slidably inserted into the guide groove;

[0013] The elastic drive component is a spring disposed in the guide groove, and the spring is located between the lifting rod and the bottom of the guide groove, so that its upper and lower ends respectively abut against the bottom of the guide groove and the upper end face of the lifting rod.

[0014] In one possible implementation, the bottom of the guide groove is provided with an observation hole that extends to the upper end face of the alignment member, and the upper end face of the alignment member is provided with a receiving groove that communicates with the observation hole.

[0015] The ranging component is an infrared ranging sensor embedded in the receiving groove. The detection end of the infrared ranging sensor is inserted into the observation hole and is oriented towards the lifting rod.

[0016] In one possible implementation, the upper side of the positioning plate has a limiting platform that abuts against the upper end face of the alignment member, and the reciprocating drive component includes:

[0017] A snap-fit ​​block is disposed on the upper side of the limiting platform, and a first transmission nut is fixedly connected thereto. The axial direction of the first transmission nut is parallel to the sliding direction of the alignment member; and

[0018] The first transmission screw is threadedly connected to the first transmission nut, and the first transmission screw is driven by a first rotary motor for driving its rotation.

[0019] The snap-fit ​​block has two downwardly extending snap-fit ​​portions; the two snap-fit ​​portions are arranged side by side along the axial direction of the first transmission nut and are adapted to abut against the two sides of the alignment member respectively.

[0020] In one possible implementation, the lower end face of the lifting rod is provided with a concave ball groove, and a ball for contacting the detection surface is embedded in the concave ball groove.

[0021] In one possible implementation, the lower side of the positioning plate has two protrusions;

[0022] Each of the protrusions is located between two guide rails, and the two protrusions are adapted to abut against the adjacent sides of the two guide rails respectively, so that the arrangement direction of the two protrusions is perpendicular to the length direction of the guide rails.

[0023] In one possible implementation, the linear drive component includes:

[0024] A transmission block is detachably connected to the positioning plate, and the transmission block has a second transmission nut fixedly connected to it, the axial direction of the second transmission nut being parallel to the sliding direction of the positioning plate; and

[0025] The second transmission screw is threadedly connected to the second transmission nut, and the second transmission screw is driven by a second rotary motor for driving its rotation.

[0026] In one possible implementation, the transmission block has a reserved hole suitable for the passage of the second transmission screw, and a recessed groove disposed on its outer side and coaxially communicating with the reserved hole;

[0027] The second transmission nut is fixedly embedded in the sinking groove.

[0028] In one possible implementation, the second transmission screw is rotatably disposed on the lower side of the positioning plate; and the positioning plate has an insertion hole extending in the vertical direction, and the transmission block has a mating block adapted to be inserted into the insertion hole.

[0029] In one possible implementation, the upper side of the guide rail has a strip groove extending along its length, and the positioning plate has a slider slidably disposed in the strip groove between the guide rail and the positioning plate.

[0030] The positioning plate has a through hole running vertically through it; the slider has an upwardly extending mounting screw adapted to pass through the through hole and extend outward, and the mounting screw is threadedly connected to a mounting nut adapted to abut against the side of the positioning plate.

[0031] In this embodiment, a level can be used to detect whether the guide rails are level, ensuring that the two guide rails are positioned on both sides of the detection area and remain level. A positioning plate is then placed between the two guide rails, with both ends slidably connected to them, allowing the guide rails to be parallel and their lengths perpendicular to each other. When the flatness of the area between the two guide rails needs to be checked, a linear drive component moves the positioning plate, changing its fixed position within the detection area. Subsequently, a reciprocating drive component moves the alignment component, causing the lifting rod to move synchronously. Furthermore, under the action of the elastic drive component, the lower end of the lifting rod remains in contact with the detection surface. If the detection surface shows a protrusion or depression, the lifting rod will adaptively move upward or downward, causing a change in the value detected by the measuring component. After adjusting the position of the positioning plate multiple times, the operator can determine the flatness of the concrete surface by observing the readings of the measuring component.

[0032] Compared with the prior art, the concrete surface flatness detection device provided in this embodiment can flexibly adjust the detection range of the device for the concrete surface by cooperating with the linear drive component and the reciprocating drive component, so as to reflect the flatness of the concrete surface in the entire detection area and ensure the efficiency and reliability of the concrete surface flatness detection results. Attached Figure Description

[0033] To more clearly illustrate the technical solutions in the embodiments of this application, 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 some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0034] Figure 1 A three-dimensional structural schematic diagram of the concrete surface flatness detection device provided in the embodiments of this application;

[0035] Figure 2 This is a three-dimensional structural diagram of the guide rail used in the embodiments of this application;

[0036] Figure 3 This is a three-dimensional structural diagram of the positioning plate and slider used in the embodiments of this application from an exploded perspective;

[0037] Figure 4 This is a three-dimensional structural diagram of the positioning plate and transmission block used in the embodiments of this application from an exploded perspective;

[0038] Figure 5 This is a three-dimensional structural diagram of the first transmission screw and the limiting platform used in the embodiments of this application in a combined state;

[0039] Figure 6 This is a partially enlarged schematic diagram of the positioning plate, alignment member, and snap-fit ​​block used in the embodiments of this application from an exploded view.

[0040] Figure 7 This is a three-dimensional structural diagram of the alignment component, lifting rod, and ranging component used in the embodiments of this application from an exploded view.

[0041] Figure 8 This is a cross-sectional structural diagram of the alignment component, lifting rod, and ranging component used in the embodiments of this application in a combined state;

[0042] Figure 9 This is a cross-sectional view of the alignment member used in the embodiments of this application;

[0043] Explanation of reference numerals in the attached drawings: 1. Guide rail; 11. Level; 12. Strip groove; 2. Positioning plate; 21. Protrusion; 22. Insertion hole; 23. Through hole; 3. Alignment component; 31. Guide groove; 32. Observation hole; 33. Receiving groove; 4. Lifting rod; 41. Elastic drive component; 42. Concave ball groove; 43. Ball bearing; 5. Distance measuring component; 6. Linear drive component; 61. Transmission block; 611. Second transmission nut; 612. Reserved hole; 613. Sinking groove; 614. Connecting block; 62. Second transmission screw; 621. Second rotary motor; 7. Reciprocating drive component; 71. Snap-fit ​​block; 711. Snap-fit ​​part; 712. First transmission nut; 72. First transmission screw; 721. First rotary motor; 8. Limiting platform; 9. Slider; 91. Mounting screw; 92. Mounting nut. Detailed Implementation

[0044] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0045] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0046] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0047] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0048] Please refer to the following: Figures 1 to 9 The concrete surface flatness testing device provided in this application will now be described. The concrete surface flatness testing device proposed in this application includes two guide rails 1, a positioning plate 2, a lifting rod 4, and a distance measuring component 5.

[0049] Two guide rails 1 are fixed on both sides of the detection area and are arranged parallel to each other. In actual use, the detection area is usually the ground; when the detection area is a wall, the guide rails 1 need to be fixed to the vertically extending surface with the help of Velcro, anchoring posts, or other tools.

[0050] Each guide rail 1 is equipped with a level 11; in actual use, by adjusting the height of the filler between the guide rail 1 and its contact surface, the length direction of the guide rail 1 can be made parallel to the horizontal plane.

[0051] The positioning plate 2 is slidably disposed between two guide rails 1, with its two ends slidably connected to the two guide rails 1 respectively, and the positioning plate 2 is connected to a linear drive component 6 for driving it to move along the length direction of the guide rails 1.

[0052] A positioning member 3 is slidably connected to the positioning plate 2. The sliding direction of the positioning member 3 is perpendicular to the sliding direction of the positioning plate 2. The positioning member 3 is also connected to a reciprocating drive member 7, which can drive the positioning member 3 to move relative to the positioning plate 2. This movement can reciprocate along a preset trajectory. In this embodiment, to ensure the rationality of the structural connection, the sliding connection between the positioning plate 2 and the positioning member 3 is achieved by means of an opening on the positioning plate 2. Specifically, the positioning plate 2 has a guide hole that runs through the vertical direction. This guide hole extends along the arrangement direction of the two guide rails 1. The positioning member 3 adopts an I-shaped structure with a vertical cross-section. This I-shaped structure is embedded in the guide hole to restrict the longitudinal movement of the positioning member 3 relative to the positioning plate 2, and at the same time restrict the sliding direction of the positioning member 3 relative to the positioning plate 2.

[0053] The lifting rod 4 is slidably connected to the alignment member 3 in the vertical direction, and there is an elastic drive member 41 between the lifting rod 4 and the alignment member 3, so that the lifting rod 4 moves downward relative to the alignment member 3 to abut against the detection surface on the lower side of the alignment member 3 and maintains the abutment state with the detection surface.

[0054] The ranging component 5 is fixedly mounted on the alignment component 3 and faces the lifting rod 4 to detect the distance the lifting rod 4 moves in the vertical direction. Specifically, it detects the distance the lifting rod 4 moves longitudinally relative to the alignment component 3 to provide feedback on the flatness of the detection surface.

[0055] It should be noted that when the surface being tested is relatively flat, the reading of the distance measuring component 5 will not change when the lifting rod 4 contacts and moves against the surface. However, when the surface being tested has depressions or protrusions, the reading of the distance measuring component 5 will change regardless of the size of the depressions or protrusions, for the operator to record. When the surface being tested is concrete, the reading of the distance measuring component 5 will usually change even if the surface is relatively flat due to the presence of debris and other impurities. In this case, a range of variation can be predetermined, and the variation within this range can be ignored relative to the overall data.

[0056] In this embodiment, the level 11 can detect whether the guide rail 1 is horizontal, so that the two guide rails 1 are respectively set on both sides of the detection area and both are kept horizontal. On this basis, the positioning plate 2 is set between the two guide rails 1 and the two ends of the positioning plate 2 are slidably connected to the two guide rails 1 respectively, so that the two guide rails 1 are set in parallel and the length direction of the positioning plate 2 is perpendicular to the length direction of the guide rail 1, thereby completing the fixed arrangement of the entire device.

[0057] When it is necessary to test the flatness of the area between the two guide rails 1, the positioning plate 2 is moved by the linear drive component 6, which changes the fixed position of the positioning plate 2 within the test area. Subsequently, the alignment component 3 is moved by the reciprocating drive component 7, which causes the lifting rod 4 to move synchronously under the action of the alignment component 3. During the movement of the lifting rod 4, the lower end of the lifting rod 4 remains in contact with the test surface due to the action of the elastic drive component 41. At this time, if there is a convexity or depression on the test surface, the lifting rod 4 will move upward or downward adaptively, thereby changing the value detected by the measuring component 5, and thus collecting the first set of data. Subsequently, after adjusting the position of the positioning plate 2 multiple times, multiple sets of data can be obtained to cover the entire test area. Finally, the operator can determine the flatness of the concrete surface by observing the reading of the measuring component 5.

[0058] Compared with the prior art, the concrete surface flatness detection device provided in this embodiment can flexibly adjust the detection range of the device for the concrete surface by means of the cooperation of the linear drive component 6 and the reciprocating drive component 7, so as to reflect the flatness of the concrete surface in the entire detection area and ensure the efficiency and reliability of the concrete surface flatness detection results.

[0059] In some embodiments, such as Figure 7 and Figure 8 As shown, a guide groove 31 is provided on the lower end surface of the alignment member 3, and the lifting rod 4 is slidably inserted into the guide groove 31; Figure 8 As shown, the opening of the guide groove 31 has a first convex ring extending radially inward, and the upper end of the lifting rod 4 has a second convex ring extending radially outward. After the lifting rod 4 is inserted into the guide groove 31, the end of the first convex ring facing the bottom of the guide groove 31 can abut against the second convex ring to restrict the lifting rod 4 from leaving the guide groove 31, improve the connection strength between the alignment member 3 and the lifting rod 4, and restrict the movement trajectory of the lifting rod 4 relative to the alignment member 3.

[0060] The elastic drive element 41 is a spring disposed within the guide groove 31, positioned between the lifting rod 4 and the bottom of the guide groove 31, so that its upper and lower ends respectively abut against the bottom of the guide groove 31 and the upper end face of the lifting rod 4. In actual use, the spring is always in an elastically compressed state to continuously provide a downward force to the lifting rod 4, thereby ensuring that the lower end of the lifting rod 4 remains in contact with the detection surface.

[0061] In some embodiments, such as Figures 7 to 9 As shown, the bottom of the guide groove 31 is provided with an observation hole 32 that extends to the upper end face of the alignment member 3, and the upper end face of the alignment member 3 is provided with a receiving groove 33 that communicates with the observation hole 32; based on the aforementioned structure, the ranging member 5 is an infrared ranging sensor embedded in the receiving groove 33, and the detection end of the infrared ranging sensor is inserted into the observation hole 32 and is positioned towards the lifting rod 4.

[0062] In practical use, the infrared light from the infrared ranging sensor enters the guide groove 31 through the observation hole 32, then passes through the inside of the spring and falls onto the lifting rod 4. During this process, the body of the infrared ranging sensor is protected by the receiving groove 33, and in this embodiment, the opening of the receiving groove 33 has a cover to prevent the infrared ranging sensor from falling out of the receiving groove 33. At the same time, the structure of the spring does not affect the propagation of infrared light, ensuring the stability of the device in actual use.

[0063] In some embodiments, such as Figure 1 , Figure 5 and Figure 6 As shown, the upper side of the positioning plate 2 has a limiting platform 8 that abuts against the upper end face of the alignment member 3; in this embodiment, the upper side of the positioning plate 2 has an upwardly extending column, and the lower side of the limiting platform 8 has a downwardly extending sleeve with an open lower end. When the limiting platform 8 is moved downward on the upper side of the positioning plate 2, the sleeve can be fitted onto the column to restrict the movement of the limiting platform 8 relative to the positioning plate 2 in the horizontal direction.

[0064] In this embodiment, the reciprocating drive component 7 includes a snap-fit ​​block 71 and a first transmission screw 72.

[0065] The locking block 71 is disposed on the upper side of the limiting platform 8, and the locking block 71 is connected to the alignment member 3 in a transmission manner. Specifically, the locking block 71 has two downwardly extending locking portions 711; the two locking portions 711 are arranged side by side along the axial direction of the first transmission nut 712, and are adapted to abut against the two sides of the alignment member 3 respectively, so that when the locking block 71 moves, the alignment member 3 moves synchronously relative to the positioning plate 2. The first transmission nut 712 is fixedly connected to the locking block 71, and the axial direction of the first transmission nut 712 is parallel to the sliding direction of the alignment member 3.

[0066] The first transmission screw 72 is disposed on the upper side of the limiting platform 8, and its axial direction is parallel to the axial direction of the first transmission nut 712. The first transmission screw 72 is threadedly connected to the first transmission nut 712. Based on this, the first transmission screw 72 is connected to a first rotary motor 721 for driving its rotation. Specifically, the first rotary motor 721 is fixedly disposed on the upper side of the limiting platform 8, and its power output shaft is coaxially connected to the first transmission screw 72.

[0067] By adopting the above technical solution, when the first rotating motor 721 drives the first transmission screw 72 to rotate, the first transmission nut 712 rotates along the axial direction of the first transmission screw 72, so as to drive the combination structure of the snap-fit ​​block 71 and the alignment member 3 to move synchronously; based on this, by selecting the forward rotation and reverse rotation of the first rotating motor 721, the technical purpose of driving the alignment member 3 to move back and forth can be achieved.

[0068] In some embodiments, such as Figure 7 As shown, the lower end face of the lifting rod 4 is provided with a concave ball groove 42, and a ball bearing 43 for contacting the detection surface is embedded in the concave ball groove 42.

[0069] By adopting the above technical solution, the lower end of the lifting rod 4 abuts against the detection surface through the ball bearing 43, which can change the original surface contact to point contact, thereby reducing the influence of friction and ensuring the stability of the lifting rod 4 during movement.

[0070] In some embodiments, such as Figure 1 and Figure 4 As shown, the lower side of the positioning plate 2 has two protrusions 21 that extend downward and are arranged side by side in the horizontal direction.

[0071] After the positioning plate 2 and the two guide rails 1 are combined, each protrusion 21 is located between the two guide rails 1, and the two protrusions 21 are adapted to abut against the adjacent sides of the two guide rails 1 respectively, so that the arrangement direction of the two protrusions 21 is perpendicular to the length direction of the guide rails 1, thus avoiding the positioning plate 2 from tilting.

[0072] In some embodiments, such as Figure 1 and Figure 4 As shown, the linear drive component 6 includes a transmission block 61 and a second transmission screw 62.

[0073] The transmission block 61 is detachably connected to the positioning plate 2 so that the two move synchronously. The transmission block 61 has a second transmission nut 611 fixedly connected to it, and the axial direction of the second transmission nut 611 is parallel to the sliding direction of the positioning plate 2.

[0074] The second transmission screw 62 is threadedly connected to the second transmission nut 611, and the second transmission screw 62 is connected to a second rotary motor 621 for driving its rotation.

[0075] By adopting the above technical solution, when the second rotating motor 621 drives the second transmission screw 62 to rotate, the second transmission nut 611 can be screwed along the axial direction of the second transmission screw 62 to drive the combined structure of the transmission block 61 and the positioning plate 2 to move synchronously, thereby achieving the technical objective of driving the positioning plate 2 to move.

[0076] In some embodiments, such as Figure 4 As shown, the transmission block 61 has a reserved hole 612 suitable for the passage of the second transmission screw 62, and a recessed groove 613 disposed on its outer side and coaxially connected with the reserved hole 612.

[0077] The second transmission nut 611 is fixedly embedded in the recessed groove 613 to achieve a recessed installation of the second transmission nut 611 relative to the side of the transmission block 61; at the same time, after the second transmission nut 611 and the second transmission screw 62 are combined, the second transmission screw 62 is inserted into the reserved hole 612 to avoid the transmission block 61 interfering with the arrangement of the second transmission screw 62.

[0078] In some embodiments, such as Figure 4 As shown, the second transmission screw 62 is located below the positioning plate 2, specifically by means of the support plates at both ends rotatably mounted below the positioning plate 2. Furthermore, the positioning plate 2 has a through-hole 22 extending vertically, and the transmission block 61 has a mating block 614 suitable for embedding into the through-hole 22.

[0079] In actual assembly, by inserting the docking block 614 into the socket 22, the positioning plate 2 can move synchronously when the transmission block 61 moves. Furthermore, since the docking block 614 is supported and limited by the second transmission screw 62 in the vertical direction and the positioning plate 2 is supported and limited by the guide rail 1, the connection between the docking block 614 and the socket 22 has strong stability and will not suddenly disintegrate during transmission due to structural design defects.

[0080] In some embodiments, such as Figures 1 to 3 As shown, the upper side of the guide rail 1 has a strip groove 12 extending along its length. A slider 9 is slidably disposed within the strip groove 12 between the positioning plate 2 and the guide rail 1. In actual use, the slider 9 can only move relative to the guide rail 1 along the length of the strip groove 12. In this embodiment, the vertical cross-section of the strip groove 12 is an inverted T-shape. The slider 9 consists of two parts: a main body embedded in the strip groove 12 with an inverted T-shaped vertical cross-section, and a collar fitted around the outer periphery of the main body, capable of rotating relative to the main body. When the main body is embedded in the strip groove 12, the outer circumferential surface of the collar contacts the inner wall of the strip groove 12, so that when the main body moves, the collar rotates relative to the main body, ensuring smooth movement of the main body.

[0081] To achieve a detachable connection between the slider 9 and the positioning plate 2, the positioning plate 2 has a through hole 23 extending vertically; the slider 9 has an upwardly extending mounting screw 91 adapted to pass through the through hole 23 and protrude therefrom, and a mounting nut 92 is threaded onto the mounting screw 91. During assembly, the mounting screw 91 is passed through the through hole 23 from bottom to top, and then the mounting nut 92 is screwed onto the mounting screw 91, so that the mounting nut 92 abuts against the upper side of the positioning plate 2, thereby restricting the movement of the positioning plate 2 relative to the slider 9.

[0082] The above content is only a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A device for detecting the flatness of a concrete surface, characterized in that, include: Two guide rails are fixed on both sides of the detection area and are arranged parallel to each other; each guide rail is equipped with a level to ensure that the length direction of the guide rail is parallel to the horizontal plane. A positioning plate is slidably disposed between two guide rails and is driven by a linear drive component for moving it; an alignment component is slidably connected to the positioning plate, the sliding direction of the alignment component is perpendicular to the sliding direction of the positioning plate, and the alignment component is driven by a reciprocating drive component. The lifting rod is slidably connected to the alignment member in the vertical direction, and there is an elastic driving member between the lifting rod and the alignment member so that the lifting rod moves downward to abut the detection surface; as well as A ranging component is fixedly mounted on the alignment component and oriented toward the lifting rod to detect the distance the lifting rod moves in the vertical direction.

2. The concrete flatness detection device of claim 1, wherein, The lower end face of the alignment member is provided with a guide groove, and the lifting rod is slidably inserted into the guide groove; The elastic drive component is a spring disposed in the guide groove, and the spring is located between the lifting rod and the bottom of the guide groove, so that its upper and lower ends respectively abut against the bottom of the guide groove and the upper end face of the lifting rod.

3. The concrete flatness detection device of claim 2, wherein The bottom of the guide groove is provided with an observation hole that extends to the upper end face of the alignment member, and the upper end face of the alignment member is provided with a receiving groove that communicates with the observation hole. The ranging component is an infrared ranging sensor embedded in the receiving groove. The detection end of the infrared ranging sensor is inserted into the observation hole and is oriented towards the lifting rod.

4. The concrete flatness detection device of claim 1, wherein The upper side of the positioning plate has a limiting platform that abuts against the upper end face of the alignment member, and the reciprocating drive component includes: A snap-fit ​​block is disposed on the upper side of the limiting platform, and a first transmission nut is fixedly connected thereto. The axial direction of the first transmission nut is parallel to the sliding direction of the alignment member; and The first transmission screw is threadedly connected to the first transmission nut, and the first transmission screw is driven by a first rotary motor for driving its rotation. The snap-fit ​​block has two downwardly extending snap-fit ​​portions; the two snap-fit ​​portions are arranged side by side along the axial direction of the first transmission nut and are adapted to abut against the two sides of the alignment member respectively.

5. The concrete flatness detection device of claim 1, wherein, The lower end face of the lifting rod is provided with a concave ball groove, and a ball for contacting the detection surface is embedded in the concave ball groove.

6. The concrete flatness detection device of claim 1, wherein The lower side of the positioning plate has two protrusions; Each of the protrusions is located between two guide rails, and the two protrusions are adapted to abut against the adjacent sides of the two guide rails respectively, so that the arrangement direction of the two protrusions is perpendicular to the length direction of the guide rails.

7. The concrete flatness detection device of claim 1, wherein The linear drive component includes: A transmission block is detachably connected to the positioning plate, and the transmission block has a second transmission nut fixedly connected to it, the axial direction of the second transmission nut being parallel to the sliding direction of the positioning plate; and The second transmission screw is threadedly connected to the second transmission nut, and the second transmission screw is driven by a second rotary motor for driving its rotation.

8. The concrete flatness detection device of claim 7, wherein, The transmission block has a reserved hole suitable for the second transmission screw to pass through, and a recessed groove provided on its outer side and coaxially connected with the reserved hole; The second transmission nut is fixedly embedded in the sinking groove.

9. The concrete flatness detection device of claim 7, wherein, The second transmission screw is rotatably disposed on the lower side of the positioning plate; and the positioning plate has an insertion hole that runs through the vertical direction, and the transmission block has a mating block suitable for embedding into the insertion hole.

10. The concrete flatness detection device of any one of claims 1-9, wherein, The upper side of the guide rail has a strip groove extending along its length, and the positioning plate has a slider that is slidably disposed in the strip groove between the guide rail and the positioning plate. The positioning plate has a through hole running vertically; the slider has an upwardly extending mounting screw adapted to pass through the through hole and extend outward, and the mounting screw is threadedly connected to a mounting nut adapted to abut against the side of the positioning plate.

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