Concrete surface flatness measuring device for engineering quality identification

Abstract

The utility model relates to the technical field of engineering quality identification, in particular to a concrete surface flatness measuring device for engineering quality identification, which comprises a detection table, a clamping seat is slidably connected to the top of the detection table, a second threaded lead screw is rotatably connected to the inside of a guide seat, an eccentric wheel is rotatably connected to the inside of a lifting frame, and a second threaded lead screw is rotatably connected to the inside of the lifting frame. And a laser displacement sensor is fixedly mounted on the inner top wall of the connecting rod, a spring rod is fixedly connected to the interior of the mounting cylinder, and a flat pressing cylinder is rotationally connected to the inner side of the lifting plate. According to the device for measuring the surface flatness of the concrete for engineering quality identification, a flat pressing cylinder rolls back and forth at the top of a concrete member, when the flat pressing cylinder encounters an uneven part, a lifting plate can be driven to move up and down in a mounting cylinder, and then a laser displacement sensor is used for detecting the height displacement change of a laser reflector on the lifting plate; therefore, the flatness data of the current concrete member can be accurately obtained.

Description

Technical Field

[0001] The utility model relates to the technical field of engineering quality appraisal, in particular to a device for measuring the flatness of a concrete surface for engineering quality appraisal. Background Art

[0002] Concrete is one of the main materials used in the construction of building projects and road and bridge projects. The surface flatness of the formed concrete slabs will not only affect the aesthetics of the wall and road structure, but also reflect the quality of the internal structure of the concrete material. The uneven wall surface will affect the stability of the house structure, and the potholes on the concrete road surface will pose a great potential threat to driving safety. Therefore, during the project quality acceptance, it is necessary to collect the surface data of the concrete material through a concrete surface flatness measuring device to facilitate the analysis of the identification results.

[0003] After searching, it is found that a civil engineering concrete surface flatness detection device is disclosed in a utility model patent with Chinese patent announcement number CN216668682U. The concrete surface flatness detection device in the utility model patent moves a sphere linearly on the concrete structure, and then infers the degree of unevenness by pressing the lower guide rod and the upper guide rod. However, the civil engineering concrete surface flatness detection device lacks a numerical measurement structure, and needs to obtain flatness data through manual observation. This method is prone to large errors and will cause certain inconveniences in actual measurement. Therefore, the detection structure needs to be further improved, so a device for measuring the surface flatness of concrete for engineering quality appraisal is proposed. Utility Model Content

[0004] In view of the shortcomings of the prior art, the utility model provides a device for measuring the flatness of concrete surface for engineering quality appraisal, which has the advantage of being able to automatically and accurately obtain concrete surface flatness data, and solves the problem that the civil concrete surface flatness detection device in the above-mentioned background technology requires manual naked eye observation of measurement data, and there will be certain errors in measurement use.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a device for measuring the surface flatness of concrete for engineering quality appraisal, comprising a detection platform, the top of which is provided with an adjustment detection structure;

[0006] The adjustment and detection structure includes a reduction motor, a first threaded screw, a clamping seat, a guide seat, a second threaded screw, a lifting frame, an eccentric wheel, a connecting rod, a laser displacement sensor, a mounting tube, a spring rod, a lifting plate and a flat pressure cylinder. The reduction motor is fixedly installed on the left side of the detection platform, the first threaded screw is rotatably connected inside the detection platform, the top of the detection platform is slidably connected to the clamping seat, the top of the detection platform is fixedly connected to the guide seat, the inside of the guide seat is rotatably connected to the second threaded screw, the top of the guide seat is slidably connected to the lifting frame, the inside of the lifting frame is rotatably connected to the eccentric wheel, the inside of the lifting frame is slidably connected to the connecting rod, the inner top wall of the connecting rod is fixedly installed with the laser displacement sensor, the bottom of the connecting rod is fixedly connected to the mounting tube, the inside of the mounting tube is fixedly connected to the spring rod, the outside of the spring rod is slidably connected to the lifting plate, and the inside of the lifting plate is rotatably connected to the flat pressure cylinder.

[0007] Furthermore, the number of the first threaded screws is four, the right ends of two of the first threaded screws are fixedly connected to the left ends of the other two first threaded screws through shafts, and the left ends of the two first threaded screws are fixedly connected to pulleys, and the output end of the reduction motor is fixedly connected to the left side of one of the pulleys, and the threaded circles of the two first threaded screws are symmetrical to the threaded circles of the other two first threaded screws.

[0008] Furthermore, there are two clamping seats, and four dampers are fixedly connected to the opposite sides of the two clamping seats, wherein the right ends of the four dampers and the left ends of the other four dampers are fixedly connected with clamping plates, and the bottoms of the two clamping seats are fixedly connected with two threaded sliders, and the four threaded sliders are respectively threadedly connected to the four threaded ring layers.

[0009] Furthermore, there are two guide seats, the second threaded screw is located inside one of the guide seats, and a sliding rod is fixedly connected to the inside of the other guide seat, the left side of one of the guide seats is rotatably connected to a first rotating wheel, the right end of the first rotating wheel is fixedly connected to a worm, and the front end of the second threaded screw is fixedly connected to a worm wheel shaft, and the worm wheel shaft is engaged with the outside of the worm.

[0010] Furthermore, there are two lifting frames and two eccentric wheels, the bottom of one of the lifting frames is connected to the external thread of the second threaded screw, and the bottom of the other lifting frame is slidably connected to the outside of the sliding rod, the opposite sides of the two lifting frames are rotatably connected with the second rotating wheels, the opposite sides of the two second rotating wheels are respectively fixedly connected to the opposite sides of the two eccentric wheels, the opposite sides of the two eccentric wheels are rotatably connected with connecting rods, the two connecting rods are both two-section structures, and the tops of the two connecting rods are respectively rotatably connected to the left and right ends of the connecting rod.

[0011] Furthermore, two empty slots are opened inside the connecting rod, and there are two laser displacement sensors, which are respectively located on the inner top walls of the two empty slots. A laser emitter and a laser detector are provided at the bottom of the two laser displacement sensors. There are two mounting tubes, and the tops of the two mounting tubes are respectively connected to the two empty slots.

[0012] Furthermore, there are four spring rods, which are respectively located on the inner left wall and the inner right wall of the two mounting cylinders. Each of the spring rods is a buffer spring and a screw rod sleeve structure. There are two lifting plates. The left and right sides of the two lifting plates are respectively slidably connected to the outside of the four screw rods, and laser reflectors are fixedly installed on the top of the two lifting plates. A concrete component is placed on the top of the detection platform.

[0013] Beneficial Effects

[0014] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0015] The device for measuring the flatness of the concrete surface used in the project quality appraisal is to place the concrete component to be tested on the top of the testing platform, drive the first threaded screw through the reduction motor, and use the clamping seat to clamp and fix it on the left and right sides of the concrete component, then rotate the eccentric wheel to make the linkage rod drive the flattening cylinder on the connecting rod to move up and down to fit with the top of the concrete component, and then rotate the worm to use the second threaded screw to drive the lifting frame and the flattening cylinder to roll back and forth on the top of the concrete component. When the flattening cylinder encounters an uneven part, it will drive the lifting plate to move up and down in the installation cylinder, and use the laser displacement sensor to detect the height displacement change of the laser reflector on the lifting plate, so as to accurately obtain the flatness data of the current concrete component. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a three-dimensional schematic diagram of the test platform of the utility model from a top-down perspective;

[0017] Figure 2 This is a front sectional view of the structure of the testing platform of the utility model;

[0018] Figure 3 for Figure 2 A top view of the perspective;

[0019] Figure 4 for Figure 3 Schematic diagram of the structure without connecting rods in the viewing angle;

[0020] Figure 5 for Figure 3 Cross-sectional view of the test bench in perspective;

[0021] Figure 6 for Figure 2 A schematic diagram of the enlarged structure in the middle.

[0022] In the figure: 1. detection table; 2. adjustment detection structure; 201. reduction motor; 202. first threaded screw; 203. clamping seat; 204. guide seat; 205. second threaded screw; 206. lifting frame; 207. eccentric wheel; 208. connecting rod; 209. laser displacement sensor; 210. mounting cylinder; 211. spring rod; 212. lifting plate; 213. flat pressure cylinder; 3. concrete member. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] See also Figure 1-6 A device for measuring the flatness of a concrete surface for project quality appraisal comprises a detection platform 1, an adjustment detection structure 2 is arranged on the top of the detection platform 1, and a concrete component 3 is placed on the top of the detection platform 1.

[0025] The adjustment and detection structure 2 includes a reduction motor 201, a first threaded screw 202, a clamping seat 203, a guide seat 204, a second threaded screw 205, a lifting frame 206, an eccentric wheel 207, a connecting rod 208, a laser displacement sensor 209, a mounting cylinder 210, a spring rod 211, a lifting plate 212 and a flat pressing cylinder 213. The reduction motor 201 is fixedly installed on the left side of the detection platform 1, and the first threaded screw 202 is rotatably connected inside the detection platform 1. The reduction motor 201 drives two of the first threaded screws 202 through a pulley, and the two first threaded screws 202 drive the other two first threaded screws 202 through an axle rod. The top of the detection platform 1 is slidably connected to the clamping seat 203, and the damper and the clamping plate of the clamping seat 203 are used to flexibly clamp the concrete component 3. The top of the detection platform 1 is fixedly connected to the guide seat 204, and the internal rotation of the guide seat 204 The worm gear drives the second threaded screw 205 to make the lifting frame 206 slide forward and backward on the guide seat 204. The top of the guide seat 204 is slidably connected to the lifting frame 206. The eccentric wheel 207 is rotatably connected inside the lifting frame 206. The eccentric wheel 207 drives the connecting rod 208 to move up and down through the linkage rod. The inner side of the lifting frame 206 is slidably connected to the connecting rod 208. The inner top wall of the connecting rod 208 is fixedly installed with a laser displacement sensor 209. The bottom of the connecting rod 208 is fixedly connected to the installation cylinder 210. The interior of the installation cylinder 210 is fixedly connected to the spring rod 211. The outside of the spring rod 211 is slidably connected to the lifting plate 212. The leveling cylinder 213 rolls on the concrete component 3. When encountering an uneven part, it will drive the lifting plate 212 to move up and down. The inner side of the lifting plate 212 is rotatably connected to the leveling cylinder 213.

[0026] according to Figure 2 and Figure 5 As shown, the reduction motor 201 drives one of the pulleys, and the two pulleys are connected by belt drive, so that the two first threaded screws 202 rotate synchronously in the same direction. Since the two first threaded screws 202 are connected to the other two first threaded screws 202 through shafts, and the thread circles of the two first threaded screws 202 are symmetrical with the thread circles of the other two first threaded screws 202, the rotation direction of two of the thread circles is opposite to that of the other two thread circles.

[0027] according to Figure 3 and Figure 4 as well as Figure 5As shown, the bottoms of the two clamping seats 203 are threadedly connected to the four threaded ring layers through four threaded sliders, so that the two clamping seats 203 move towards or away from each other, and the opposite sides of the two clamping seats 203 are connected to the clamping plates through four dampers. The clamping plates are made of rubber material, so that when the clamping plates are attached to the left and right sides of the concrete component 3, a flexible clamping effect is provided for the concrete, and it can adapt to concrete components 3 of different widths.

[0028] according to Figure 3 and Figure 4 As shown, one of the guide seats 204 is internally connected to a second threaded screw 205 for rotation. The first rotary wheel is rotated to drive the worm shaft on the front end of the second threaded screw 205 by the worm engagement. The second threaded screw 205 is used to drive one of the lifting frames 206 to move forward and backward. The other lifting frame 206 can keep synchronization with one of the lifting frames 206 and move in the same direction through the connecting rod 208.

[0029] according to Figure 2 and Figure 3 as well as Figure 4 As shown, rotating the second rotary wheel causes the eccentric wheel 207 to drive the connecting rod to rotate eccentrically. The connecting rod is a two-stage structure, which can drive the left and right ends of the connecting rod 208 to adjust up and down along the lifting frame 206 to ensure that the leveling cylinder 213 can fit the top of the concrete components 3 at different heights.

[0030] according to Figure 3 and Figure 6 As shown, a laser emitter and a laser detector are provided at the bottom of the laser displacement sensor 209. The laser emitter emits a pulse laser to the laser reflector on the top of the lifting plate 212. After reflection, the laser is received by the photodiode of the laser detector. Then, the distance measurement algorithm of the optical signal processor inside the laser displacement sensor 209 calculates the displacement of the lifting plate 212 when it moves up and down. The flatness data of the surface of the concrete component 3 is determined by the displacement data.

[0031] according to Figure 1 and Figure 2 as well as Figure 3 As shown, when the flattening cylinder 213 encounters an uneven surface, it will drive the lifting plate 212 to slide up and down along the screw structure of the spring rod 211, and the lifting plate 212 will move up and down, causing the height data of the laser emitter to change. The laser displacement sensor 209 is used to measure the displacement of the lifting plate 212 when it moves up and down.

[0032] In summary, the device for measuring the flatness of concrete surface for project quality appraisal is as follows: the concrete component 3 to be inspected is placed on the top of the inspection platform 1, the first threaded screw 202 is driven by the reduction motor 201, and is clamped and fixed on the left and right sides of the concrete component 3 by the clamping seat 203, and then the eccentric wheel 207 is rotated to make the linkage rod drive the leveling cylinder 213 on the connecting rod 208 to move up and down, and fit with the top of the concrete component 3, and then the worm is rotated to use the second threaded screw 205 to drive the lifting frame 206 and the leveling cylinder 213 to roll back and forth on the top of the concrete component 3. When the leveling cylinder 213 encounters an uneven part, it will drive the lifting plate 212 to move up and down in the installation cylinder 210, and the laser displacement sensor 209 is used to detect the height displacement change of the laser reflector on the lifting plate 212, so as to accurately obtain the flatness data of the current concrete component 3, so as to solve the problem that the civil engineering concrete surface flatness detection device in the above-mentioned background technology needs to observe the measurement data manually with the naked eye, and there will be certain errors in the measurement and use.

[0033] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0034] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A device for measuring the flatness of a concrete surface for project quality assessment, comprising a testing platform (1), characterized in that: The top of the detection platform (1) is provided with an adjustment detection structure (2); The adjustment detection structure (2) comprises a reduction motor (201), a first threaded screw (202), a clamping seat (203), a guide seat (204), a second threaded screw (205), a lifting frame (206), an eccentric wheel (207), a connecting rod (208), a laser displacement sensor (209), a mounting cylinder (210), a spring rod (211), a lifting plate (212) and a flat pressing cylinder (213); the reduction motor (201) is fixedly installed on the left side of the detection platform (1); the first threaded screw (202) is rotatably connected inside the detection platform (1); the clamping seat (203) is slidably connected to the top of the detection platform (1); the guide seat (204) is fixedly connected to the top of the detection platform (1); A second threaded screw (205) is rotatably connected to the inside of the guide seat (204); a lifting frame (206) is slidably connected to the top of the guide seat (204); an eccentric wheel (207) is rotatably connected to the inside of the lifting frame (206); a connecting rod (208) is slidably connected to the inside of the lifting frame (206); a laser displacement sensor (209) is fixedly mounted on the inner top wall of the connecting rod (208); a mounting cylinder (210) is fixedly connected to the bottom of the connecting rod (208); a spring rod (211) is fixedly connected to the inside of the mounting cylinder (210); a lifting plate (212) is slidably connected to the outside of the spring rod (211); and a flattening cylinder (213) is rotatably connected to the inside of the lifting plate (212).

2. The device for measuring the surface flatness of concrete for engineering quality assessment according to claim 1 is characterized in that: The number of the first threaded screws (202) is four, wherein the right ends of two of the first threaded screws (202) are fixedly connected to the left ends of the other two first threaded screws (202) through shafts, and the left ends of the two first threaded screws (202) are fixedly connected to pulleys, and the output end of the reduction motor (201) is fixedly connected to the left side of one of the pulleys, wherein the thread circles of the two first threaded screws (202) and the thread circles of the other two first threaded screws (202) are symmetrical structures.

3. The device for measuring the surface flatness of concrete for engineering quality assessment according to claim 2 is characterized in that: There are two clamping seats (203), and four dampers are fixedly connected to the opposite sides of the two clamping seats (203), wherein the right ends of the four dampers and the left ends of the other four dampers are fixedly connected to clamping plates, and the bottoms of the two clamping seats (203) are fixedly connected to two threaded sliders, and the four threaded sliders are respectively threadedly connected to four threaded ring layers.

4. The device for measuring the surface flatness of concrete for engineering quality assessment according to claim 1 is characterized in that: There are two guide seats (204), the second threaded screw (205) is located inside one of the guide seats (204), and the inside of the other guide seat (204) is fixedly connected with a sliding rod, the left side of one of the guide seats (204) is rotatably connected to a first rotating wheel, the right end of the first rotating wheel is fixedly connected to a worm, and the front end of the second threaded screw (205) is fixedly connected to a worm wheel shaft, and the worm wheel shaft is meshed with the outside of the worm.

5. The device for measuring the surface flatness of concrete for engineering quality assessment according to claim 4 is characterized in that: The number of the lifting frames (206) and the eccentric wheels (207) are both two, the bottom of one of the lifting frames (206) is connected to the external thread of the second threaded screw (205), and the bottom of the other lifting frame (206) is connected to the external sliding rod in a sliding manner, the opposite sides of the two lifting frames (206) are rotatably connected to the second rotating wheels, the opposite sides of the two second rotating wheels are respectively fixedly connected to the opposite sides of the two eccentric wheels (207), the opposite sides of the two eccentric wheels (207) are rotatably connected to the connecting rods, the two connecting rods are both of two-stage structures, and the tops of the two connecting rods are respectively rotatably connected to the left and right ends of the connecting rod (208).

6. The device for measuring the surface flatness of concrete for engineering quality assessment according to claim 1, characterized in that: Two empty slots are provided inside the connecting rod (208), the number of the laser displacement sensors (209) is two and they are respectively located on the inner top walls of the two empty slots, the bottoms of the two laser displacement sensors (209) are each provided with a laser emitter and a laser detector, the number of the mounting tubes (210) is two, and the tops of the two mounting tubes (210) are respectively connected to the two empty slots.

7. The device for measuring the surface flatness of concrete for engineering quality assessment according to claim 1, characterized in that: There are four spring rods (211) and they are respectively located on the inner left wall and the inner right wall of the two mounting tubes (210); each spring rod (211) is a buffer spring and a screw rod sleeve-type structure; there are two lifting plates (212); the left and right sides of the two lifting plates (212) are respectively slidably connected to the outside of the four screw rods; and laser reflectors are fixedly installed on the tops of the two lifting plates (212); and a concrete component (3) is placed on the top of the detection platform (1).

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