High-efficiency and high-precision leveling equipment for flatness of concrete terrace

Abstract

The invention provides high-efficiency concrete floor flatness high-precision leveling equipment, and relates to the field of construction equipment, the high-efficiency concrete floor flatness high-precision leveling equipment comprises a driving group and a leveling group, and the driving group and the leveling group are connected through a plurality of traction devices; the driving set comprises a driving frame body, a first flattening set and a second flattening set, the first flattening set and the second flattening set are arranged at the two ends of the driving frame body, a guide mechanism is further arranged on the driving frame body, and the guide mechanism penetrates through the driving frame body and then is connected with the first flattening set. The leveling group comprises a limiting frame and a leveling plate arranged on the limiting frame, and a plurality of traction devices are connected with the driving frame body and the limiting frame respectively; according to the high-efficiency and high-precision leveling equipment for the flatness of the concrete terrace, provided by the invention, flattening and scraping treatment can be completed through one-time operation, on one hand, the equipment cost can be reduced, on the other hand, switching between the equipment is avoided, and the overall construction period can be shortened.

Description

Technical Field

[0001] The present invention relates to the technical field of construction equipment, and particularly relates to a high-efficiency leveling device for high-precision flatness of concrete floors. Background Art

[0002] A floor refers to a floor that is constructed and processed from the original ground using specific materials and processes, presenting certain decorative and functional properties; it is commonly used in hospital floors, food factory workshop floors, pharmaceutical factory workshop floors, laboratory building floors, computer room floors, etc. In the construction process of floors, the commonly used material is concrete. After pouring the concrete onto the base layer and performing corresponding treatments, a floor is formed. In the actual construction stage, after the concrete is poured onto the base layer, compaction and leveling treatments are required. In the prior art, the common method is to operate the compaction equipment and the leveling equipment manually respectively to complete the treatment of the concrete. However, using the prior art method to treat the concrete requires the simultaneous use of multiple engineering construction machinery and the need to use them manually respectively, which increases the labor cost. At the same time, using different equipment in different links increases the equipment cost on the one hand and increases the overall construction period on the other hand, which does not conform to the concepts of green construction methods, green construction, and green low-carbon. In addition, the flatness accuracy of the prior art also needs to be further improved. Therefore, in view of the situation that the leveling equipment for concrete floors is at a medium and low level, it is urgent to propose a high-efficiency leveling device for high-precision flatness of concrete floors. Summary of the Invention

[0003] The purpose of the present invention is to provide a high-efficiency leveling device for high-precision flatness of concrete floors, which can solve the above technical problems; The present invention provides a high-efficiency leveling device for high-precision flatness of concrete floors, including: A driving group and a leveling group, and the driving group and the leveling group are connected by a plurality of traction devices; The driving group includes: a driving frame body and a first flattening group and a second flattening group arranged at both ends of the driving frame body, and a guiding mechanism is further arranged on the driving frame body, and the guiding mechanism passes through the driving frame body and is connected to the first flattening group; The leveling group includes: a limiting frame and a leveling plate arranged on the limiting frame, and a plurality of traction devices are respectively connected to the driving frame body and the limiting frame.

[0004] As a further technical solution, the driving frame body includes: A bearing part and a driving part, and the driving part is arranged at one end of the bearing part; the bearing part is arranged adjacent to the leveling group, and the traction device is arranged between the bearing part and the leveling group.

[0005] As a further technical solution, a transfer table is provided on the driving part, and the guiding mechanism is inserted through the transfer table and can rotate on the transfer table.

[0006] As a further technical solution, the first flattening group includes: A first driving body, connected to the guiding mechanism and rotating under the drive of the guiding mechanism; A first pressing roller and a second pressing roller, respectively arranged at both ends of the first driving body and rotating following the first driving body.

[0007] As a further technical solution, the first driving body includes: A driving structure, connected to the guiding mechanism; and the first pressing roller and the second pressing roller are arranged at both ends of the driving structure; A driving device, arranged on the driving structure.

[0008] As a further technical solution, the guiding mechanism includes: A guiding frame, connected to the first flattening group; A rotating shaft, inserted through the driving frame body and connected to the guiding frame at one end; A steering arm, connected to the other end of the rotating shaft.

[0009] As a further technical solution, the steering arm includes: A steering frame, connected to the other end of the rotating shaft; An operating arm, rotatably arranged inside the steering frame.

[0010] As a further technical solution, the steering frame includes: A frame body, connected to the rotating shaft; A limiting rod, inserted through the frame body; A reset rod, inserted through the frame body and connected to the operating arm through a reset device.

[0011] As a further technical solution, the operating arm includes: An operating rod, with one end inserted through and rotatably connected to the steering frame; A limiting block, inserted through one end of the operating rod and adapted to the limiting groove on the steering frame; A limiting rod, with one end inserted through the operating rod and connected to the limiting block.

[0012] As a further technical solution, a number of connecting heads are provided on the limiting frame, and one ends of a number of traction devices are respectively connected to the number of connecting heads, and the other ends are connected to the driving frame body.

[0013] The technical solution of the present invention, through the settings of the driving group and the leveling group, during the use stage, operates the driving group to drive the leveling group to run, uses the leveling plate to scrape the concrete, and can control the overall running direction by operating the guiding mechanism during the use process; in addition, during the use process, the concrete can be flattened twice through the cooperation of the first flattening group and the second flattening group; thereby ensuring that the scraping operation is carried out under the condition of compaction of the concrete, improving the effect after scraping; compared with the prior art, the present invention provides an advanced concrete floor leveling device with high technology, high efficiency and high reliability, changing the current situation that the concrete floor leveling device is at a medium and low level. The flattening and scraping processes are completed only through one operation. On the one hand, it can reduce the equipment cost, on the other hand, it can avoid the switching between equipment, shorten the overall construction period, promote the green construction method, strengthen the green construction, accelerate the equipment update in the construction field, and is green, low-carbon, energy-saving and environmentally friendly. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0015] Figure 1 It is a perspective view of an efficient concrete floor leveling device with high flatness of the present invention from one angle; Figure 2 It is a perspective view of an efficient concrete floor leveling device with high flatness of the present invention from another angle; Figure 3 It is a perspective view of an efficient concrete floor leveling device with high flatness of the present invention from yet another angle; Figure 4 It is Figure 3 The enlarged schematic diagram of the structure of part X in Figure 5 It is a schematic diagram of the structure of an efficient concrete floor leveling device with high flatness of the present invention from one angle; Figure 6 It is Figure 5 The enlarged cross-sectional view of part A - A in Figure 7 It is Figure 5 The cross-sectional view of part B - B in Figure 8 It is a schematic diagram of the structure of an efficient concrete floor leveling device with high flatness of the present invention from another angle; Figure 9 It isFigure 8 Cross-sectional view of the C-C part; Figure 10 Schematic structural diagram of a high-efficiency concrete floor leveling device with high-precision leveling of the present invention from another angle; Figure 11 Stereogram of another embodiment of a high-efficiency concrete floor leveling device with high-precision leveling of the present invention; Figure 12 is Figure 2 Enlarged schematic structural diagram of part M in;

[0016] Explanation of reference numerals: 100 - Driving group; 101 - Driving frame; 111 - Bearing part; 112 - Driving part; 113 - Adapter table; 102 - First flattening group; 121 - First driving body; 1211 - Driving structure; 1212 - Driving device; 122 - First pressing roller; 123 - Second pressing roller; 124 - Roller frame; 125 - Driving shaft; 126 - Eccentric block; 103 - Second flattening group; 104 - Guiding mechanism; 141 - Guiding frame; 142 - Rotating shaft; 143 - Steering arm; 1431 - Steering frame; 1401 - Frame body; 1402 - Limiting rod; 1403 - Reset rod; 1404 - Limiting groove; 1432 - Operating arm; 1421 - Operating rod; 1422 - Limiting block; 1423 - Adjusting rod; 151 - Detection device; 152 - Air hole; 153 - Air pump; 200 - Leveling group; 201 - Limiting frame; 211 - Slideway; 202 - Leveling plate; 221 - Slide block; 203 - Connector; 204 - Adjusting motor; 205 - Transmitting device. Detailed implementation manners

[0017] The technical solutions of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0018] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present invention.

[0019] In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more features. In the description of the present invention, "a plurality" means two or more, unless otherwise specifically defined. In addition, the terms "mounted", "connected", and "coupled" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0020] As Figures 1-12 shown, a high-efficiency concrete floor leveling device with high-precision leveling proposed by the present invention includes: A driving group 100 and a leveling group 200, which are connected by a plurality of traction devices (not shown in the figure) between the driving group 100 and the leveling group 200; the leveling group 200 can perform a scraping operation on the concrete at the usage site under the drive of the driving group 100; among them, the traction device is preferably a flexible traction device, such as a chain. On the one hand, the driving group 100 and the leveling group 200 are connected through the flexible traction device, and on the other hand, the force applied by the driving group 100 to the leveling group 200 can be buffered through the flexible traction device, reducing the loss of the leveling group 200; Among them, the driving group 100 includes a driving frame 101, a first flattening group 102 and a second flattening group 103 arranged at both ends of the driving frame 101. A guiding mechanism 104 is also arranged on the driving frame 101. After passing through the driving frame 101, the guiding mechanism 104 is connected to the first flattening group 102. During the use stage, by operating the guiding mechanism 104, the control of the first flattening group 102 is realized, the rotation direction of the first flattening group 102 is realized, and thus the overall running direction is adjusted. At the same time, during the running process, the concrete at the use site is initially flattened by the first flattening group 102, and then the use site is flattened again by the second flattening group 103. After two flattenings, the leveling group 200 realizes the scraping operation on the flattened concrete at the use site. It should be noted that during the use stage, heavy objects can be arranged on the driving frame 101 to further increase the overall weight of the driving group 100, and thus adjust the force exerted by the first flattening group 102 and the second flattening group 103 on the concrete at the use site. The leveling group 200 includes a limiting frame 201 and a leveling plate 202 arranged on the limiting frame 201. A number of traction devices are respectively connected to the driving frame 101 and the limiting frame 201. During the operation of the driving group 100, the limiting frame 201 is driven to move by a number of traction devices, and the leveling plate 202 is driven to move during the movement. The leveling plate 202 is used to scrape the concrete that has been flattened twice at the use site. It should be noted that the overall limiting frame 201 has a weight, and since the leveling plate 202 is arranged on the limiting frame 201, the leveling plate 202 can bear the downward force brought by the limiting frame 201 and ensure the stability of the limiting frame 201 and the leveling plate 202 when scraping the concrete at the use site.

[0021] Of course, during the use stage of the present invention, the flattening and scraping operations on the concrete at the use site can be carried out by manually holding the guiding mechanism 104. The user can also sit on the driving frame 101 and use the driving method to carry out the flattening and scraping operations on the concrete at the use site. It shall be subject to the actual situation, and the present invention will not be further described.

[0022] The technical solution of the present invention, through the settings of the driving group 100 and the leveling group 200, during the use stage, operating the driving group 100 drives the leveling group 200 to run. The concrete is leveled by the leveling plate 202, and at the same time, during the use process, the overall running direction can be controlled by operating the guiding mechanism 104; in addition, during the use process, the concrete can be flattened twice through the cooperation of the first flattening group 102 and the second flattening group 103; thus ensuring that the concrete is leveled under the condition of being compacted, improving the effect after leveling; compared with the prior art, the flattening and leveling processes are completed only through one operation, which can reduce the equipment cost on the one hand and avoid the switching between equipment on the other hand, and can shorten the overall construction period.

[0023] As Figure 2 and 3 shown, the driving frame 101 includes a bearing part 111 and a driving part 112, and the driving part 112 is arranged at one end of the bearing part 111; the bearing part 111 is arranged adjacent to the leveling group 200, and the traction device is arranged between the bearing part 111 and the leveling group 200; specifically, a plurality of connecting heads 203 are arranged on the limiting frame 201, one ends of a plurality of traction devices are respectively connected to the plurality of connecting heads 203, and the other ends are connected to the driving frame 101; in the present invention, the limiting frame 201 includes a first cross beam and a second cross beam, and both ends of the first cross beam and the second cross beam are respectively arranged on the first longitudinal beam and the second longitudinal beam; and two connecting heads 203 are arranged on both the first cross beam and the second cross beam; the connecting heads 203 on the first cross beam are connected to the bearing part 111 through two traction devices, and the two connecting heads 203 on the second cross beam are connected to the extension plates on both sides of the bearing part 111 through two traction devices; in this way, by connecting the first cross beam and the second cross beam through four traction devices respectively, the force borne by the limiting frame 201 can be made more evenly distributed while pulling the limiting frame 201, ensuring the stability of the limiting frame 201; in addition, the first longitudinal beam and the second longitudinal beam can increase the contact area with the use site, avoiding the situation of the limiting frame 201 tilting during the traction process of the driving group 100.

[0024] As Figure 1 and 2 shown, a transfer table 113 is arranged on the driving part 112, and the guiding mechanism 104 is arranged through the transfer table 113 and can rotate on the transfer table 113; through the setting of the transfer table 113, the guiding mechanism 104 can be supported, and the guiding mechanism 104 drives the first flattening group 102 to rotate under the support of the transfer table 113. Since the driving part 112 is placed between the guiding mechanism 104 and the first flattening group 102, therefore, the first flattening group 102 will not affect the guiding mechanism 104 during the rotation process, improving the operability of the guiding mechanism 104.

[0025] AsFigure 1 and Figure 3 As shown in Figure 3 , the first flattening group 102 includes a first driving body 121, a first pressing roller 122 and a second pressing roller 123. The first driving body 121 is connected to the guiding mechanism 104 and rotates under the drive of the guiding mechanism 104. The first pressing roller 122 and the second pressing roller 123 are respectively arranged at both ends of the first driving body 121 and rotate following the first driving body 121. During the use stage, the first driving body 121 acts to drive the first pressing roller 122 and the second pressing roller 123 to rotate. During the rotation process, the whole body advances through the frictional force between the first pressing roller 122 and the second pressing roller 123, and flattens the concrete at the use location while advancing. The second flattening group 103 has the same structure as the first flattening group 102. For the sake of brevity, the present invention will not further elaborate on this. However, it should be noted that in the present invention, the whole body can be driven by the first flattening group 102, or by the second flattening group 103, or by the cooperation of the first flattening group 102 and the second flattening group 103 to drive the whole body forward simultaneously. Specifically, it depends on actual needs, and the present invention will not further explain this here.

[0026] As Figure 3 shown in Figure 3 , the first driving body 121 includes a driving structure 1211 and a driving device 1212. The driving structure 1211 is connected to the guiding mechanism 104. The first pressing roller 122 and the second pressing roller 123 are arranged at both ends of the driving structure 1211. The driving device 1212 is arranged on the driving structure 1211. In addition, the driving structure 1211 is respectively connected to the first pressing roller 122 and the second pressing roller 123. During the use stage, the driving device 1212 drives the driving structure 1211 to act, and the driving structure 1211 simultaneously drives the first pressing roller 122 and the second pressing roller 123 to act. Then, a driving force is generated through the first pressing roller 122 and the second pressing roller 123 to realize the overall operation. In the present invention, preferably, the driving structure 1211 is a rear axle structure in the prior art, so the present invention will not further explain this. At the same time, driving shafts 125 are arranged on both sides of the driving structure 1211 and are connected to the roller frame 124 through the driving shafts 125. During use, the driving structure 1211 drives the driving shafts 125 to rotate, and the driving shafts 125 drive the roller frame 124 to rotate, thereby realizing the rotation of the first pressing roller 122 and the second pressing roller 123.

[0027] Three states in the present invention: State 1: The first flattening group 102 is driven, and the second flattening group 103 is driven passively; the drive shaft 125 in the first flattening group 102 is fixedly connected to the roller frame 124, and an eccentric block 126 is arranged on the drive shaft 125; a bearing is arranged between the drive shaft 125 and the roller frame 124 in the second flattening group 103; the drive structure 1211 in the first flattening group 102 drives the drive shaft 125 in the first flattening group 102 to drive the first pressure roller 122 and the second pressure roller 123 to rotate; while the drive shaft 125 in the second flattening group 103 only serves as a support; the second flattening group 103 follows the movement under the drive of the first flattening group 102; at the same time, during the rotation of the drive shaft 125 in the first flattening group 102, the eccentric block 126 will be driven to rotate. Due to the existence of the eccentric block 126, the first pressure roller 122 and the second pressure roller 123 will generate vibration force, and the generated vibration force will be transmitted to the concrete at the place of use during the flattening process, so as to effectively reduce the looseness in the concrete during the first flattening process; that is, State 1 is the front drive mode.

[0028] State 2: A bearing is arranged between the drive shaft 125 and the roller frame 124 on the first flattening group 102; the drive shaft 125 in the second flattening group 103 is fixedly connected to the roller frame 124, and an eccentric block 126 is arranged on the drive shaft 125; the second flattening group 103 rotates under the drive of the drive structure 1211 in the second flattening group 103, and pushes the first pressure roller 122 and the second pressure roller 123 in the first flattening group 102 to rotate to achieve forward movement; at the same time, the eccentric block 126 on the drive shaft 125 in the second flattening group 103 rotates following the drive shaft 125, and makes the pressure rollers in the second flattening group 103 generate vibration force, so as to effectively reduce the looseness in the concrete during the second flattening process; that is, State 2 is the rear drive mode.

[0029] State 3: The drive shafts 125 and the roller frames 124 in both the first flattening group 102 and the second flattening group 103 are fixedly connected; and eccentric blocks 126 are arranged on the drive shafts 125; during the operation, driving forces are generated simultaneously by the first flattening group 102 and the second flattening group 103, and vibration forces are generated during the driving process, and the looseness in the concrete can be effectively reduced during both the first flattening and the second flattening processes; that is, State 3 is the four-wheel drive mode.

[0030] For the above three situations, it is necessary to make a selection in combination with the actual compaction situation and the load situation on the bearing part 111. Specifically, it shall be subject to the actual situation, and the present invention will not be further elaborated.

[0031] Such as Figure 3 and 4As shown in the figure, slideways 211 are arranged on both sides of the limit frame 201, and sliders 221 are arranged at both ends of the screed 202, and the slideways 211 are adapted to the sliders 221; during the use stage, the sliders 221 are placed in the slideways 211; in addition, a middle beam is arranged on the limit frame 201, and an adjustment frame is arranged on the middle beam; an adjustment motor 204 is arranged on the adjustment frame, and the output shaft of the adjustment motor 204 passes through the middle beam and is connected to the screed 202; during the use stage, the position of the screed 202 in the slideways 211 can be changed by the adjustment motor 204, thereby changing the distance between the screed 202 and the use site; in this way, the height of the concrete after screeding can be flexibly adjusted according to different use conditions, improving the accuracy of screeding. In addition, a transmitting device 205 and a receiving device (not shown in the figure) are oppositely arranged on both sides of the limit frame 201, and the transmitting device 205 and the receiving device can be one group or multiple groups; when it is one group, the transmitting device 205 and the receiving device are arranged at the rear end of the screed 202 (the forward direction is the front); in this way, after the screed 202 levels the concrete, the leveling effect can be detected by the transmitting device 205 and the receiving device; if the concrete is too high after the screed 202 levels it, blocking the receiving device from obtaining the signal of the transmitting device 205, the receiving device generates an alarm, indicating that the leveling has not reached the predetermined effect; in the present invention, the transmitting device 205 is an infrared transmitter or a laser transmitter, the receiving device is an infrared receiver or a laser receiver, and the number of the transmitting device 205 and the receiving device is set according to actual needs; and the alarm of the receiving device can be a sound alarm or a light alarm; specifically, a buzzer or an alarm lamp in the prior art is connected to the receiving device to give an alarm according to the situation of the receiving device.

[0032] Of course, it can also be arranged at the front end of the screed 202 to detect the concrete situation in the front section of the screed 202 in advance, control the adjustment motor 204 according to the detected situation, and adjust the height between the screed 202 and the ground; it can also be arranged with the transmitting device 205 and the receiving device at both the front and rear ends of the screed 202 to detect the concrete situation before and after the screed 202 levels, specifically subject to the actual situation; it should be noted that in the present invention, a control device is arranged on the drive group 100; the adjustment motor 204 and the receiving device can be connected by wire or wireless (wireless module in the prior art); the adjustment motor 204 is adjusted by obtaining the signal of the receiving device through the control device, thereby realizing the adjustment of the height of the screed 202; among them, the control device adopts a single-chip microcomputer or a PLC control board in the prior art; at the same time, a power supply is also arranged on the drive group 100, and the power supply is connected to the adjustment motor 204, the transmitting device 205 and the receiving device through wires to provide the electric energy required for work.

[0033] In the present invention, the transmitting device 205 is preferably a laser emitter, and the receiving device is preferably a laser receiver. Both the transmitting device 205 and the receiving device can be multiple groups, each group including 3 to 5 laser emitters and laser receivers. The transmitting device 205 and the receiving device are arranged at intervals in the horizontal direction, with a horizontal spacing of 500 to 1000 mm, forming a laser scanning line with a coverage width of 0.5 to 1.5 m. Specifically, the laser emitter can be a line laser module, which includes a semiconductor diode and a cylindrical lens, emits visible red light with an emission wavelength of 635 to 670 nm, and diffuses the point light source into a fan-shaped laser beam through the cylindrical lens, with a divergence angle of , and can project a clear laser bright line with a width ≤ 1 mm on the ground; the laser receiver can be a CMOS image sensor with a resolution ≥ 1280×960 pixels, equipped with a 650 nm narrowband filter to effectively filter the interference of ambient light such as sunlight and lamp light. The sensor target surface forms a fixed baseline distance L with the optical axis of the laser emitter, and L = 100 to 300 mm, constituting a triangulation ranging structure; the control device collects the laser sensor data and the equipment encoder signal, and generates the three-dimensional point cloud of the floor surface in real time. The equipment encoder signal includes the traveling speed v and the mileage Y.

[0034] During operation, the laser emitter emits a fan-shaped laser beam towards the floor surface, and the laser receiver collects the laser line image at a frequency of 20 to 50 fps. Each pixel corresponds to a horizontal measurement point on the ground (resolution ≤ 10 mm), and the longitudinal spacing ≤ v / 20 (m), and the height value h i (x, y) of the measurement point is calculated, with an accuracy of ±0.1 mm. Let the set of discrete measurement points on the floor surface be: ; The fitted plane equation is: ; The objective function is the minimum sum of the squares of the perpendicular distances from each measurement point to the fitted plane: ; Take the partial derivatives of a, b, and c and set them to zero to obtain the normal equations: ; Obtain the parameters a, b, and c by solving the algorithm equations: Perform deviation calculation to calculate the flatness deviation of each measurement point: ; Finally, output the flatness index: Maximum deviation , reflecting the extreme value of local flatness; Root mean square deviation , measuring the uniformity of overall flatness.

[0035] Through deviation calculation, the present invention can evaluate the leveling effect to determine whether it meets the acceptance requirements.

[0036] Further, when δ max exceeds the preset threshold, the laser receiver can give an alarm, and the control device can send an instruction to the adjustment motor 204 for adjustment. The height of the flat plate 202 is finely adjusted through the slider 221 to perform secondary scraping on the high-deviation area. The adjustment amount is: ; where k is a proportionality coefficient of 0.5 to 1.

[0037] Through laser scanning and least squares fitting, the average accuracy of flatness measurement of the present invention reaches ±0.5 mm, far exceeding the detection accuracy of ±2 mm of the traditional straightedge. It realizes a fully automatic process of detection, analysis, and adjustment, reduces manual intervention, and improves the construction efficiency by 20% - 30%.

[0038] Among them, the formed triangular ranging structure has the following principle: the horizontal distance between the optical center E of the emitter and the optical center C of the receiver is the baseline L, the included angle between the optical axes of the emitter and the receiver is the fixed angle α, the laser beam is projected onto the ground point P, and the image is formed as the point p' on the target surface of the receiver. The pixel pitch on the target surface is d, f is the focal length of the receiver lens, and x is the abscissa of the laser line imaging point. Deflection angle calculation: The abscissa x of the laser line imaging point corresponds to the physical distance x·d, and the deflection angle ; Height calculation formula: According to the sine theorem, the height of the measurement point: ; When L H, it is simplified to: , and the error compensation coefficient .

[0039] The working process of the formed triangular ranging structure is as follows: Initial calibration: Project a laser line on the reference plane, adjust the receiver to center the laser line on the target surface, and record the zero-position pixel coordinate x0, corresponding to β = 0; Dynamic scanning: When the device is moving, the emitter continuously projects the laser line, the receiver synchronously acquires images, and the encoder records the traveling distance , monitors the traveling speed v of the device through the encoder, and triggers the synchronous acquisition signal; triggers an acquisition every time it advances Δs to avoid motion blur, Δs = v / frame rate. Specifically, Δs = 10 mm; Image preprocessing: Threshold segmentation is used to extract the laser line, the pixel coordinates of the laser line spot are extracted, and noise points are excluded; Otsu algorithm can be used for threshold segmentation of the image. The Otsu algorithm can achieve accurate segmentation with low computational cost, meeting the real-time processing requirements of construction equipment. The 3σ rule can be used to exclude noise points. The 3σ rule is also known as the three-standard-deviation rule or the Pauta criterion, which is suitable for the real-time processing requirements of laser scanning in the present invention, has high computational efficiency, is suitable for large amounts of data, and ensures that the proportion of effective measurement points is ≥95%; Coordinate transformation: Convert the pixel coordinates (x, y) into three-dimensional coordinates , where the X-axis is along the laser line direction (horizontal), X = x·Δx (Δx is the horizontal resolution); the Y-axis is along the traveling direction (longitudinal), Y = cumulative traveling distance; the H-axis is the height value.

[0040] Point cloud generation: Interpolate into a 50mm×50mm regular grid to generate a three-dimensional point cloud model of the floor surface.

[0041] In combination with the environmental adaptability requirements, the present invention can be optimized in terms of anti-interference design and structural protection according to its adaptability in different scenarios.

[0042] The anti-interference design can include: Strong light suppression: Laser pulse modulation (10kHz) and synchronous gated acquisition are used to only identify signals of the same frequency; switch to 940nm invisible light laser under strong light.

[0043] Dynamic threshold algorithm: Automatically adjust the binarization threshold according to the ambient light intensity to adapt to the illumination intensity ≤10000lux.

[0044] Low reflectivity compensation: The receiver uses an avalanche photodiode with an internal gain of 20 - 100 times; the laser power is dynamically adjusted according to the reflectivity: ; A diffusive diffuser is installed at the front end of the transmitter to expand the irradiation area and enhance the spot intensity on low-reflectivity surfaces such as black concrete.

[0045] Structural protection includes that the surfaces of the transmitting device 205 and the receiving device can be coated with an anti-sticking coating, such as a parylene anti-sticking coating, to reduce the adhesion of dust; and can be periodically automatically removed or manually removed by air pump blowing or water flushing. In addition, a hydrophobic layer is also coated on the screed 202, which can reduce the adhesion of concrete; in addition, after use, the residual concrete on the screed 202 can be better removed by means such as water flushing, improving the cleaning efficiency; the hydrophobic layer can be a lotus leaf paint layer or an inorganic ceramic particle-modified polytetrafluoroethylene-based composite coating, with both hydrophobic and anti-wear characteristics. The edges of the screed 202 and the limit frame 201 can both be rounded to reduce chipping caused by stress concentration, etc.

[0046] Such as Figure 2As shown, the guiding mechanism 104 includes a guiding frame 141, a rotating shaft 142, and a steering arm 143. The guiding frame 141 is connected to the first flattening group 102. The rotating shaft 142 is arranged on the driving frame body 101 in a penetrating manner, and one end thereof is connected to the guiding frame 141. The steering arm 143 is connected to the other end of the rotating shaft 142. During the use stage, by operating the steering arm 143, the guiding frame 141 is driven to rotate through the rotating shaft 142, thereby controlling the rotation direction of the first flattening group 102 and realizing the adjustment of the advancing direction. Among them, the steering arm 143 includes a steering frame 1431 and an operating arm 1432. The steering frame 1431 is connected to the other end of the rotating shaft 142. The operating arm 1432 is rotatably arranged in the steering frame 1431. The angle of the operating arm 1432 can be adjusted according to actual needs to cope with different usage situations. At the same time, when the operating arm 1432 is operated, the steering frame 1431 is driven to act through the operating arm 1432, and the rotating shaft 142 and the guiding frame 141 are driven to act through the steering frame 1431 to complete the adjustment of the first flattening group 102. As Figure 2 and Figure 12 shown, the steering frame 1431 includes a frame body 1401, a limiting rod 1402, and a reset rod 1403. The frame body 1401 is connected to the rotating shaft 142. The limiting rod 1402 is arranged on the frame body 1401 in a penetrating manner. The reset rod 1403 is arranged on the frame body 1401 in a penetrating manner and is connected to the operating arm 1432 through a reset device. Specifically, the operating arm 1432 is pin-connected to the steering frame 1431 and can rotate around the pin shaft. The operating arm 1432 is pulled by the reset device and is in a vertical state. The limiting rod 1402 is used to limit the operating arm 1432 from rotating excessively towards the direction where the reset rod 1403 is located. The operating arm 1432 is rotated according to needs, and the reset device is in a stretched state during the rotation process. When the use is completed, the operating arm 1432 can be reset under the action of the reset device and is in a vertical state. In the present invention, the preferred reset device is a spring.

[0047] In addition, the manipulator 1432 includes a control lever 1421, a limit block 1422 and an adjustment lever 1423. One end of the control lever 1421 is inserted through and rotatably connected to the steering frame 1431; the limit block 1422 is inserted through one end of the control lever 1421 and is adapted to the limit groove 1404 on the steering frame 1431; one end of the adjustment lever 1423 is inserted through the control lever 1421 and is connected to the limit block 1422; when the control lever 1421 is in a vertical state, the limit block 1422 cooperates with the limit groove 1404 to limit the control lever 1421 and prevent the control lever 1421 from rotating in the vertical state; during use, by operating the adjustment lever 1423, the limit block 1422 can be actuated to disengage from the limit groove 1404. When the limit block 1422 disengages from the limit groove 1404, the control lever 1421 is unrestricted and can rotate; wherein, a connecting rod can be used to connect the limit block 1422 and the adjustment lever 1423, and the adjustment lever 1423 drives the limit block 1422 to act through the connecting rod.

[0048] As Figures 5-6 and Figure 11 shown, a detection device 151 is further provided at one end of the driving structure 1211. The water content of the concrete can be detected through the detection device 151; when the water content is too low, the water content of the concrete can be increased by adding water; of course, a water tank can be provided on the bearing part 111, and the water tank is used as a load, and a water spraying port (which needs to be provided at the front end of the screed 202) is provided below the bearing part 111; the water tank and the water spraying port are connected through a water pump and a water pipe; and the water pump is connected to the control device; when the water content of the concrete is detected to be too low by the detection device 151, the water pump is started through the control device, and water is sprayed into the concrete through the water spraying port; meanwhile, the detection device 151 continuously detects the concrete; the control device can adjust the water output and the water output time of the water pump according to the detection result of the detection device 151, etc.; to ensure that the concrete used is always within the set water content range; in the present invention, the detection device 151 is preferably a microwave humidity sensor.

[0049] In addition, due to the presence of concrete in the use environment, if concrete adheres to the detection device 151, it will affect the detection result. Therefore, a plurality of air holes 152 are provided on the periphery of the detection device 151, and the plurality of air holes 152 are connected to an air pump 153; during the use stage, high-pressure gas is generated by the air pump 153 and discharged through the air holes 152, which can prevent concrete from adhering to the detection device 151 and improve the detection effect of the detection device 151; it should be noted that the air pump 153 is connected to the power supply on the bearing part 111 through a wire to obtain the electric energy required for work; and the exhaust direction of the air holes 152 can be adjusted according to the actual situation; meanwhile, during the actual use stage, the air pump 153 is connected to the control device, and the air output and the air output time can be adjusted by the control device according to the use environment, specifically subject to the actual situation, and the present invention will not be further limited.

[0050] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A high-efficiency and high-precision leveling equipment for concrete floor flatness, characterized in that: include: A driving group (100) and a leveling group (200), wherein the driving group (100) and the leveling group (200) are connected via a plurality of traction devices; The driving group (100) comprises: a driving frame (101), and a first flattening group (102) and a second flattening group (103) arranged at two ends of the driving frame (101), and a guide mechanism (104) is also arranged on the driving frame (101), and the guide mechanism (104) passes through the driving frame (101) and is connected to the first flattening group (102); The leveling group (200) comprises: a limiting frame (201) and a leveling plate (202) arranged on the limiting frame (201); and a plurality of traction devices are respectively connected to the driving frame (101) and the limiting frame (201).

2. The high-efficiency high-precision leveling equipment for concrete floor flatness according to claim 1 is characterized in that: The driving frame (101) comprises: A bearing portion (111) and a driving portion (112), wherein the driving portion (112) is arranged at one end of the bearing portion (111); the bearing portion (111) and the leveling group (200) are arranged adjacent to each other, and the traction device is arranged between the bearing portion (111) and the leveling group (200).

3. The high-efficiency high-precision leveling equipment for concrete floor flatness according to claim 2 is characterized in that: The driving part (112) is provided with a transfer platform (113), and the guide mechanism (104) is passed through the transfer platform (113) and can rotate on the transfer platform (113).

4. The high-efficiency high-precision leveling equipment for concrete floor flatness according to claim 1 is characterized in that: The first flattening group (102) comprises: A first driving body (121) is connected to the guide mechanism (104) and rotates under the drive of the guide mechanism (104); The first pressing roller (122) and the second pressing roller (123) are respectively arranged at two ends of the first driving body (121), and rotate along with the first driving body (121).

5. The high-efficiency high-precision leveling equipment for concrete floor flatness according to claim 4 is characterized in that: The first driving body (121) comprises: A driving structure (1211) connected to the guide mechanism (104); and the first pressing roller (122) and the second pressing roller (123) are arranged at two ends of the driving structure (1211); A driving device (1212) is arranged on the driving structure (1211).

6. The high-efficiency high-precision leveling equipment for concrete floor flatness according to claim 1 is characterized in that: The guiding mechanism (104) comprises: A guide frame (141) connected to the first flattening group (102); A rotating shaft (142) is inserted into the driving frame (101) and one end of the rotating shaft is connected to the guide frame (141); A steering arm (143) is connected to the other end of the rotating shaft (142).

7. The high-efficiency high-precision leveling equipment for concrete floor flatness according to claim 6 is characterized in that: The steering arm (143) comprises: A steering frame (1431) connected to the other end of the rotating shaft (142); The operating arm (1432) is rotatably arranged in the steering frame (1431).

8. The high-efficiency high-precision leveling equipment for concrete floor flatness according to claim 7 is characterized in that: The steering frame (1431) comprises: A frame (1401) connected to the rotating shaft (142); A limiting rod (1402) is inserted into the frame (1401); The reset rod (1403) is inserted into the frame (1401) and is connected to the operating arm (1432) via a reset device.

9. The high-efficiency high-precision leveling equipment for concrete floor flatness according to claim 7 is characterized in that: The operating arm (1432) comprises: An operating rod (1421), one end of which is passed through the steering frame (1431) and is rotatably connected thereto; A limit block (1422) is inserted through one end of the operating rod (1421) and is adapted to fit the limit slot (1404) on the steering frame (1431); One end of the adjustment rod (1423) is passed through the operating rod (1421) and is connected to the limit block (1422).

10. The high-efficiency high-precision leveling equipment for concrete floor flatness according to claim 1 is characterized in that: The limiting frame (201) is provided with a plurality of connectors (203); one end of a plurality of traction devices is respectively connected to the plurality of connectors (203), and the other end is connected to the driving frame body (101).

Images