Alignment Structure for Plumb Bob Rod, Laser-Type Balanced Calibration Plumb Bob Rod and Construction Method

Abstract

An alignment structure for a screeding rod, a laser-type balanced calibration screeding rod and a construction method. The alignment structure for the screeding rod includes: a laser passing window formed by penetrating two surfaces of the screeding rod perpendicular to the construction wall surface; a two-way scale fixed in the laser passing window, having two scale members arranged facing each other and perpendicular to the construction wall surface, and the scale members can rotate between horizontal and vertical angles. The present invention can find a parallel plane before screeding with the plane thickness of the least amount of materials used, can greatly improve the verticality and flatness of the engineering wall surface, improve the screeding efficiency and accuracy, can greatly reduce the construction time, and reduce the labor cost.

Description

Technical Field

[0001] The present invention relates to an alignment structure for a screeding rod, a laser-type balance calibration screeding rod and a construction method, and belongs to the technical field of building decoration engineering. Background Art

[0002] Wall plastering refers to the surface layer project of applying cement mortar, mixed mortar, and lime mortar on the wall. It realizes the overall flatness of the cast or masonry wall through a process of filling high and leveling low.

[0003] Currently, a screeding rod is mostly used for aligning the verticality of the wall surface during wall plastering.

[0004] The existing screeding rod is used in conjunction with a laser alignment instrument during use. The usage method is as follows:

[0005] 1) Use the laser alignment instrument and the flat screeding rod to jointly detect the flatness of the wall surface, determine the thickness of the plaster to be applied, fix the adjusted laser alignment instrument to the wall edge, and record the projection scale of the laser alignment instrument on the scale plate of the flat screeding rod;

[0006] 2) Apply a strip of mortar on the wall surface, install the flat screeding strip into the installation slot of the flat screeding rod, and press them together on the above-mentioned strip of mortar;

[0007] 3) Adjust the flat screeding rod so that the laser beam of the laser alignment instrument projects onto the projection scale position recorded in step (1);

[0008] 4) Remove the flat screeding rod to complete the installation of the flat screeding strip.

[0009] The above-mentioned screeding rod, laser alignment instrument and the wall leveling method completed by their cooperation have the following many deficiencies in actual application:

[0010] First, the existing screeding rod is basically used together with the screeding strip. The screeding strip needs to be fixed before the next construction step can be carried out. The fixing process requires waiting for the mortar to have a certain hardness, which is time-consuming and affects the construction progress and efficiency;

[0011] Second, the screeding strip is fixed only by pasting with cement mortar. During plastering and leveling, it will be deformed due to the extrusion of the mortar, and due to the non-elastic recovery characteristic of the cement mortar, once deformed, it needs to be leveled again, which will instead increase the construction time and reduce the construction efficiency;

[0012] Third, based on the structure of the existing screeding rod and its usage method, it is impossible to determine whether the screeding rod is completely perpendicular to the horizontal plane formed by the laser alignment instrument, which will cause the formed plane to be a natural defect.

[0013] Fourth, the fixing of the screed bar is achieved through pressing construction. However, when the pressing force is too large during construction, the screed bar will be pressed in excessively, forming a depression lower than the laser plane. Once the depression is formed, the cement mortar cannot recover on its own. In this case, the screed bar can only be removed and the construction repeated again.

[0014] Fifth, due to the size specifications, existing laser line projectors need to be fixed at one end of the wall and are not applicable to continuous walls. Moreover, each screed bar needs to be aligned by separately projecting a laser. When multiple screed bars are used together, they will block the laser line, and only one can be aligned at a time. In this way, it is impossible to calibrate between multiple screed bars, resulting in a large cumulative error and making it difficult to guarantee the actual construction qualification rate.

[0015] Sixth, existing screed bars are all designed for skilled operators. Novices are basically unable to handle them and need a long time to learn before they can work independently. Because the construction standards in the Code for Acceptance of Construction Quality of Building Decoration Engineering are: the flatness is ±2 mm, and the perpendicularity is ±3 mm. Due to the large area of the overall wall surface, generally no worker, even a skilled one, can reach this standard at one time. And the length of the screed bar is generally about two meters. Therefore, the standard ratio is ±2 / 2000. Such error guarantee can only be achieved by experienced skilled workers leading the workers to repeatedly trim, mainly relying on experience to ensure quality and efficiency. Summary of the Invention

[0016] In order to overcome the above deficiencies of the related technologies, the present invention provides an alignment structure for a screed bar, a laser-type balanced calibration screed bar and a construction method, which can find a parallel plane before screeding with the plane thickness of the least amount of materials used, can greatly improve the verticality and flatness of the engineering wall surface, improve the screeding efficiency and accuracy, can greatly reduce construction time, and reduce labor costs.

[0017] One technical solution adopted by the present invention to solve its technical problems is:

[0018] An alignment structure for a screed bar, comprising:

[0019] A laser passing through window, which is formed by opening on two surfaces of the screed bar perpendicular to the construction wall surface;

[0020] A two-way scale, fixed inside the laser passing through window, having two scale members arranged facing each other and perpendicular to the construction wall surface, and the scale members can rotate between horizontal and vertical angles.

[0021] Through the combination of the two-way scale and the laser passing through window, simultaneous and mutual calibration of multiple screed bars is achieved, the cumulative error on the same plane is eliminated, and the angle alignment of a single screed bar is also achieved, ensuring the horizontality of each placed screed bar, significantly improving the screeding efficiency and accuracy, and improving the construction qualification rate.

[0022] Another technical solution adopted by the present invention to solve its technical problems is as follows:

[0023] A laser-type balance calibration screeding rod, comprising a profile body, and the above-mentioned alignment structure for the screeding rod is provided on the profile body.

[0024] By using a screeding rod provided with an alignment structure for the screeding rod, the angle of the screeding rod itself can be quickly and intuitively calibrated by using a two-way scale. In combination with the use of a laser passing through a window, the levelness of the side-by-side screeding rods can be aligned on the basis of the same laser line position, achieving a high-standard consistency in the positions of multiple screeding rods. A parallel plane can be found before screeding, and on the basis of the plane thickness with the least amount of material used, a project wall surface with high verticality and flatness can be obtained; the operation process has low requirements for experience, and general workers can start using it after simple learning, greatly improving the construction efficiency and significantly reducing the construction time and labor costs.

[0025] Still another technical solution adopted by the present invention to solve its technical problems is as follows:

[0026] A wall surface leveling construction method based on a laser-type balance calibration screeding rod, comprising the following operation steps:

[0027] 1. Find the highest protruding point on the construction wall surface as the virtual reference wall surface:

[0028] First, take a screeding rod, set it as the first screeding rod, fix it at any point on the wall surface with cement and punch out a screed, use its own laser and verticality instrument for alignment. Then, with the first screeding rod as the reference, move a movable screeding rod continuously on the wall surface, set this movable screeding rod as the second screeding rod, refer to the scale markings on the alignment structure of the screeding rod for the laser, and take the point with the highest deviation from the middle of the scale outwards as the highest protruding point of the entire construction wall surface. Then fix the second screeding rod at the position of the highest protruding point with cement, and also use its own laser and verticality instrument for alignment. Take the imaginary plane passing through the highest protruding point and parallel to the construction wall surface as the virtual reference wall surface;

[0029] 2. Form a thinnest cement mortar screed strip at the above-mentioned second screeding rod, which is the screeding plane with the least construction amount; continue to adjust at least one movable screeding rod to be used according to the laser scale markings corresponding to the above-mentioned virtual reference wall surface so that its levelness and verticality are up to standard, that is, the aligned third screeding rod, fourth screeding rod... the Nth screeding rod, where N is a positive integer;

[0030] 3. Carry out standard construction according to the screeding plane:

[0031] Use one or N movable screeding rods aligned above for screeding to complete the plastering construction that meets the standards.

[0032] The laser passing through the window can directly hit the opposite screeding rod. When the positions of several screeding rods are not neatly arranged, a scale difference will be formed. By continuously adjusting the screeding rods, several screeding rods can form a standard straight plane, and the error can be made much smaller than the acceptance standard. Brief Description of the Drawings

[0033] The present invention will be further described below in conjunction with the drawings and embodiments.

[0034] Figure 1 It is a perspective view of the alignment structure for the screeding rod in the first usage state according to an embodiment of the present invention.

[0035] Figure 2 It is a perspective view of the alignment structure for the screeding rod in the second usage state according to an embodiment of the present invention.

[0036] Figure 3 and Figure 4 They are perspective views of the two-way scale in the first usage state at two different angles according to an embodiment of the present invention.

[0037] Figure 5 and Figure 6 They are perspective views of the two-way scale in the second usage state at two different angles according to an embodiment of the present invention.

[0038] Figure 7 It is a perspective view of the scale plate according to an embodiment of the present invention.

[0039] Figure 8 It is a perspective view of the scale sleeve according to an embodiment of the present invention.

[0040] Figure 9 It is a perspective view of the laser-type balanced calibration screeding rod according to an embodiment of the present invention.

[0041] Figures 10 - 14 They are respectively the front, left, right, upward, and top views of the laser-type balanced calibration screeding rod according to an embodiment of the present invention.

[0042] Figure 15 It is a perspective view of the application scenario of the laser-type balanced calibration screeding rod according to an embodiment of the present invention.

[0043] Explanation of the reference numerals in the drawings: 1. Alignment structure for the screeding rod, 11. Laser passing-through window, 12. Two-way scale, 121. Scale member, 1211. Scale plate, 1211-1. Scale line, 1212. Scale sleeve, 1212-1. Telescopic groove, 122. Connection support, 1221. Connection ear plate, 123. Rotating structure, 1231. Bush, 1232. Shaft, 124. Limiting structure; 21. Construction wall surface, 211. Reference point, 22. Cement mortar / lime plaster plane;

[0044] 100. Laser type balance calibration screeding rod, 101. Profile body, 1011. First plane, 1012. Second plane, 102. Laser, 1021. Laser plane, 1022. Laser line, 103. Verticality gauge, 104. Horizontal scale line, 105. Vertical scale line. Detailed implementation mode

[0045] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. 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.

[0046] Figures 1 to 15 The structural schematic diagram of a preferred embodiment of the present invention is shown. A alignment structure 1 for a screeding rod in the figure includes:

[0047] The laser passes through the window 11 and penetrates through two surfaces of the screeding rod perpendicular to the construction wall surface 21.

[0048] The two-way scale 12 is fixed in the laser passing window 11 and has two scale members 121 arranged facing each other and perpendicular to the construction wall surface 21. The scale member 121 can rotate between horizontal and vertical angles.

[0049] When the two-way scale 12 is unfolded, the levelness of the screeding rod itself can be calibrated. Usually, a laser 102 is provided on the screeding rod. When the laser plane 1021 emitted hits the scale line 1211-1 on the scale member 121 and there is an offset, it indicates that the angle of the screeding rod is inclined. Here, the inclination is mainly the rotation around its own center line. By directly reading the relative position of the laser line 1022 on the scale line 1211-1, a judgment can be made and adjustments can be made accordingly. The operation is simple and easy to master, and the accuracy is high. It can also calibrate the screeding rods on both sides of the screeding rod where it is located. The laser on one side of this wall can be projected onto other adjacent screeding rods through the laser passing window 11.

[0050] When the two-way scale 12 is folded, the scale member 121 blocks the laser passing window 11 on one or both sides. The laser hits the scale line 1211-1 of the scale member 121 that forms the blockage to form a position mark. By comparing the position marks of different screeding rods when the two-way scale 12 is folded, if they are the same, it means they are aligned. If they are different, adjustments can be made according to the scale position to complete the alignment.

[0051] Ordinary workers can use the above-adjusted screeding rod for plastering construction to produce a wall surface that meets the standards. Compared with using the screeding rods of the prior art, when the same construction team processes wall surfaces of houses of the same size, the construction man-hours in the embodiments of the present invention can be directly reduced by 30% to 40%, while the acceptance pass rate can be directly increased to 98%. This not only saves construction man-hours, improves the construction efficiency of workers and the acceptance pass rate of houses, but also reduces the treatment work of repeatedly repairing unqualified wall surfaces, as well as the waste of building materials caused by construction waste and repeated plastering, having great environmental and social benefits.

[0052] In an optional implementation manner of an embodiment of the present invention, the two-way scale 12 further includes a connection support 122. The upper end of the connection support 122 is fixedly connected to the top wall of the laser passing window 11. On both sides of its lower end, there is respectively provided a connection ear plate 1221. The two scale members 121 are respectively installed on the connection ear plate 1221 through a rotating structure 123, and through a limiting structure 124 provided on the rotating structure 123, the scale member 121 can pause within the rotation range.

[0053] The connection support 122 can be one of the specific components for realizing the rotational installation of the scale member 121. The scale member 121 rotated to the horizontal state is located outside both sides of the laser passing window 11, and the scale member 121 rotated to the vertical state is located inside the laser passing window 11 to shield it, which is applicable to simultaneously adjusting the levelness and perpendicularity according to the laser plane 1021 parallel to the construction wall surface 21.

[0054] In an optional implementation manner of an embodiment of the present invention, the limiting structure 124 includes a damping spring. The rotating structure 123 includes a bushing 1231 and a shaft 1232 that are rotationally and cooperatively matched, and the damping spring is connected between the bushing 1231 and the shaft 1232.

[0055] The damping spring, as one of the limiting structures 124, plays a role in restricting the rotation angle and flexibility of the rotating structure 123, and is used to cooperate to realize the unfolding and retracting of the scale member in the horizontal and vertical directions.

[0056] In an optional implementation manner of an embodiment of the present invention, the scale member 121 includes a scale plate 1211, and scale lines 1211-1 are provided on both the front and back sides and the connecting end face of the scale plate 1211 for aligning the laser line 1022 parallel and / or perpendicular to the construction wall surface 21.

[0057] The laser diverging in a plane form will project laser lines 1022 onto the surface of an object from multiple directions. The multi-dimensional scale lines 1211-1 on the scale plate 1211 better match the reception of the laser plane 1021 in multiple directions and are used to achieve the calibration purpose.

[0058] The scale member further includes a scale sleeve 1212 which is slidably mounted at the extended end of the scale plate 1211, and the scale lines 1211-1 are arranged at the lower edge of the scale sleeve 1212. The slidable structure for adjustable length can be specifically realized by providing a telescopic groove 1212-1 on the scale sleeve 1212, and the scale plate 1211 makes a relative contraction movement within the telescopic groove 1212-1.

[0059] An embodiment of the present invention provides a laser type balance calibration screeding rod 100, which includes a profile body 101, and the profile body 101 is provided with the alignment structure 1 for the screeding rod as described above.

[0060] In an alternative embodiment of the embodiment of the present invention, the profile body 101 is a column with a rectangular cross-section, and the column has two first planes 1011 parallel to the construction wall surface 21 and two second planes 1012 perpendicular to the construction wall surface 21. More specifically, in a preferred design, the profile body 101 is a cuboid aluminum alloy rod with smooth four sides.

[0061] In a preferred embodiment of the embodiment of the present invention, a laser 102 is further provided on the profile body 101 for emitting a plane laser line towards the scale member 121 of the screeding rod where it is located and the adjacent screeding rods;

[0062] The above-mentioned laser 102 emits a plane laser perpendicular to the second plane 1012 of the screeding rod when starting. When it irradiates an object, a straight line will be formed, which can be directly obtained based on the existing technology.

[0063] Equipping the laser 102 on the screeding rod of this embodiment and combining it with the alignment structure 1 for the screeding rod not only avoids the disadvantages of using a laser line projector, but also overcomes the deficiencies that when a laser projector is used in combination with a screeding rod, it is impossible to calibrate left and right, and the screeding rod cannot accurately eliminate errors on the same plane.

[0064] In a preferred embodiment of the embodiment of the present invention, a verticality meter 103 is further provided on the profile body 101 for adjusting the verticality of the screeding rod to ensure that a standard vertical wall surface is formed during wall surface treatment. The selection of the verticality meter 103 belongs to the existing technology, and it can be electronic or mechanical, and can be ordered from an instrument factory.

[0065] In a preferred embodiment of the embodiment of the present invention, the laser of the alignment structure 1 for the screeding rod is arranged at the upper end of the profile body through a window 11, and the window 11 is opened on the second plane 1012;

[0066] The number of the lasers 102 is two, which are arranged below the laser through window 11 and located on the two second planes 1012;

[0067] The verticality gauge 103 is arranged on the first plane 1011 away from the construction wall surface 21.

[0068] In a preferred embodiment of the present invention, vertical scale lines 105 are arranged on the first plane 1011 of the profile body facing away from the construction wall surface 21; at least one horizontal scale line 104 is arranged on at least one second plane 1012 of the profile body.

[0069] In specific implementation, three horizontal scale lines 104 are arranged, which are evenly distributed along the vertical direction on the second plane 1012 generally. The laser line 1022 formed by the laser 102 on the second plane 1012 of the profile body is calibrated by the horizontal scale line 104, and the installation position of the laser 102 can be accurately adjusted. The vertical scale line 105 is used to align the inclination angle of the alignment rib rod in the plane.

[0070] As a preferred design of each embodiment, the scale values of the scale lines 1211-1, the horizontal scale line 104 and the vertical scale line 105 are set with "0" centered, which can more intuitively and accurately judge the alignment direction required according to the deviation.

[0071] Refer to Figure 15 , the embodiment of the present invention also provides a wall surface leveling construction method based on a laser-type balance calibration rib rod, including the following operation steps:

[0072] 1. Find the highest protruding point of the construction wall surface 21 as the virtual reference wall surface:

[0073] First, take a rib rod, set it as the first rib rod, fix it at any point on the wall surface with cement and punch out a rib, use its own laser 102 and verticality gauge 103 for alignment, and then use a movable rib rod to continuously move on the wall surface with the first rib rod as the reference, set the movable rib rod as the second rib rod, refer to the scale markings of the alignment structure 1 on the rib rod by the laser, and take the point with the highest deviation from the middle of the scale outwards as the highest protruding point of the entire construction wall surface 21, then fix the second rib rod at the position of the highest protruding point with cement, and also use its own laser 102 and verticality gauge 103 for alignment, and use the imaginary plane passing through the highest protruding point and parallel to the construction wall surface 21 as the virtual reference wall surface;

[0074] 2. Refer to the above virtual reference wall surface and determine the rib plane with the least construction amount:

[0075] Use cement mortar to form a thinnest cement mortar rib at the above-mentioned second screeding rod, which is the screeding plane with the least construction volume; continue to adjust at least one movable screeding rod to be used with reference to the laser scale markings corresponding to the above-mentioned virtual reference wall surface so that both its levelness and verticality meet the standards, which are the aligned third screeding rod, fourth screeding rod... the Nth screeding rod, where N is a positive integer;

[0076] III. Standard construction according to the screeding plane:

[0077] Use one or N aligned movable screeding rods above for screeding to complete plastering construction that meets the standards.

[0078] The further specific operation process of the above-mentioned operation step one can be:

[0079] 1. Use at least two screeding rods to find the highest protruding point of the construction wall surface 21. Each successively used screeding rod is defined as the first screeding rod, the second screeding rod, the third screeding rod... the Nth screeding rod, where N is a positive integer.

[0080] 2. First, fix the first screeding rod at an arbitrary point on the construction wall surface 21 with cement to punch out a rib. Turn on the lasers 102 on both sides of the first screeding rod. Adjust whether the fixed screeding rod is aligned by observing the verticality instrument 103 and the thickness of the light rays generated by the laser on both sides of the wall surface and the ground. During this period, the thickness of the distance from the first screeding rod to the wall surface can be measured at the far end of the laser to perform correction.

[0081] 3. After aligning the first screeding rod, start using the second screeding rod to continuously move on the wall surface with the first screeding rod as the reference to find the highest protruding point of the entire wall surface. At this time, the laser instruments are all turned on. The first screeding rod moves arbitrarily along the construction wall surface 21, and its height is determined by the position of the laser on the double-sided scale. When the point with the highest degree of deviation of the light ray from the middle of the scale is found, it is the highest protruding point of the construction wall surface 21.

[0082] The further specific operation process of the above-mentioned operation step two can be:

[0083] 1. After finding the highest protruding point of the construction wall surface 21, the construction worker first applies cement mortar to the side of the second screeding rod against the wall, then presses it against the wall surface, and continuously adjusts the horizontal and verticality of the second screeding rod and its verticality with the virtual reference wall surface during this process until a thinnest cement mortar rib is formed at the highest protruding point of the construction wall surface 21.

[0084] Due to the adsorption degree of the cement mortar, the second screeding rod remains fixed on the wall surface even when not touched. At this time, the construction worker does not need to remove the second screeding rod. Instead, the lasers 102 on both sides of the second screeding rod are turned on. The construction worker can turn off the laser 102 of the first screeding rod and remove the first screeding rod. The second screeding rod will also form laser lines 1022 on the ground on both sides of the construction wall surface 21. The construction worker can adjust whether the second screeding rod is perpendicular to the virtual wall surface according to the scale on the first screeding rod.

[0085] 2. After adjusting the second screeding rod, the construction worker can perform the screeding operation. When there is only one construction worker, the construction worker can take another third screeding rod to perform the screeding. After the screeding is completed, then replace it with the fourth, fifth, and so on; when there are two or more construction workers constructing simultaneously, multiple Nth screeding rods can be used to perform simultaneous operations on the wall surface. Specifically, as Figure 15 shown, the screeding rods on the two screeding rods on both sides are opened with the alignment structure. The laser passing through the two screeding rods can adjust whether the screeding rods are perpendicular to the virtual reference plane through the laser passing windows. The construction worker can first apply the cement mortar to the place where screeding is to be done, and then use the screeding rod to press on the cement mortar and shake and press until its perpendicularity and flatness meet the requirements (calibrated jointly by the perpendicularity instrument 103, the horizontal scale, and the scale on the double-sided ruler. The laser lines 1022 emitted from both sides of the second screeding rod are at the center scale of the horizontal scale line of the first screeding rod as the standard scale. At this time, the two screeding rods are in the same plane in terms of perpendicularity. When the laser passes through the laser passing window of the first screeding rod and is at the center scale of the two scale pieces on both sides, it can be determined that the first screeding rod is completely perpendicular to the virtual reference plane), or, like the traditional construction method, apply the cement mortar or gypsum on the side of the screeding rod against the wall, and then perform the pressing and calibration work. Since the second screeding rod does not move, the construction worker can perform arbitrary construction on the wall surface, not limited to both sides, and it is a completely horizontal plane based on the second screeding rod. Each screeding construction is based on the second screeding rod as the standard. The construction worker can independently choose how many screeding lines to make according to the size of the construction wall surface 21. The more times of screeding, the lower the probability of errors, and a large amount of later rework and repair time can be saved. After the screeding construction of the front wall is completed, the construction worker can remove the second screeding rod and then perform screeding on other wall surfaces. (The setting time of the screeding in the wall plastering project is related to the ratio of the cement mortar and the setting time of the gypsum. Among them, the cement mortar takes four to eight hours, and the setting time of the quick-setting gypsum is about thirty minutes). When the screeding of this wall reaches a certain hardness, the wall plastering construction can be carried out. Since the thickness of the screeding of this wall is based on the highest protruding part of the wall surface as the reference plane, a large amount of cement mortar or gypsum can be saved.

[0086] The further specific operation process of the above operation step three can be:

[0087] The plane of the ribs formed by all the rib rods (the plane of cement mortar or gypsum ribs) is a reference plane. As long as the rib plane is not damaged, during plastering construction, it can fully meet the construction standards. Even if there are small errors, there is no need for repeated trimming, solving the problems of very large non-standard errors and low construction acceptance pass rate in previous construction. At the same time, using the rib rod of the present invention does not require skilled workers, and can achieve rapid construction and standard construction. It not only saves materials, but also greatly improves the efficiency of workers and the average construction level.

[0088] When dealing with a wall that is uneven and needs to be plastered (referred to as the construction wall surface 21), the construction worker can first set up a rib rod at a corner of the wall surface. Then, another worker sets up another rib rod on the other side of the wall surface. Turn on the lasers 102 on various rib rods. The worker adjusts the angle of the rib rod through the horizontally extended scale member, and at the same time keeps the rib rod in good verticality by observing the verticality instrument 103 of the rib rod. When the verticality and angle of both rib rods are adjusted, the reference point 211 with the least construction amount is found by the rib rods. The construction worker can perform the ribbing treatment for wall construction at the reference point 211 according to the laser plane 1021. When the overall span of the wall surface is relatively large, more rib rods can be used for simultaneous construction. The laser of the rib rod located relatively in the middle can project the laser lines 1022 of several groups of opposite rib rods onto the scale lines on the scale members of the opposite sides through the window. When there is a deviation at a certain scale, the construction worker can adjust the corresponding rib rod, so that a wall surface that meets the standards can be made during the plastering project. Since it is leveled with gypsum or cement mortar, this wall surface that meets the standards is also called the cement mortar / gypsum plane 22.

[0089] The above is only a preferred embodiment of the present invention, and does not impose any form of limitation on the present invention. Any simple modification and equivalent change made to the above embodiments based on the technical essence of the present invention shall fall within the protection scope of the present invention.

Claims

1. A laser-type balance calibration screeding rod, comprising a profile body, characterized in that: The profile body is provided with an alignment structure for the rib punching rod; The alignment structure for the rib punching rod includes: a laser passing window, which is formed by opening two surfaces of the rib punching rod perpendicular to the construction wall surface; A two-way scale, which is fixed in the laser passing window and has two scale members arranged opposite to each other and perpendicular to the construction wall surface, and the scale members can rotate between horizontal and vertical angles; The profile body is also provided with a laser device for emitting a plane laser line towards the scale members of the rib punching rod and the adjacent rib punching rods arranged side by side; The profile body is also provided with a verticality meter for adjusting the verticality of the rib punching rod; The profile body is a column with a rectangular cross-section, and the column has two first planes parallel to the construction wall surface and two second planes perpendicular to the construction wall surface; The laser passing window of the alignment structure for the rib punching rod is arranged at the upper end of the profile body and is opened on the second plane; The number of the laser devices is two, which are arranged below the laser passing window and are located on the two second planes; The verticality meter is arranged on the first plane far from the construction wall surface.

2. The laser-type balance calibration screeding rod according to claim 1, characterized in that: At least one horizontal scale line is arranged on the first plane of the profile body opposite to the construction wall surface; at least one vertical scale line is arranged on at least one second plane of the profile body.

3. The laser-type balance calibration screeding rod according to claim 1, characterized in that: The two-way scale also includes a connecting support. The upper end of the connecting support is fixedly connected to the top wall of the laser passing window. Two connecting ear plates are respectively arranged on both sides of the lower end thereof. The two scale members are respectively installed on the connecting ear plates through a rotating structure, and the scale members can be paused within the rotation range through a limiting structure arranged on the rotating structure.

4. The laser-type balance calibration screeding rod according to claim 3, characterized in that: The limiting structure includes a damping spring, and the rotating structure includes a sleeve and a shaft that are rotationally and cooperatively engaged with each other. The damping spring is connected between the sleeve and the shaft.

5. The laser-type balance calibration screeding rod according to claim 1 or 3, characterized in that: The scale member includes a scale plate, and scale lines are arranged on the front and back surfaces and the connecting end surface of the scale plate for aligning the laser line parallel and / or perpendicular to the construction wall surface.

6. The laser-type balance calibration screeding rod according to claim 5, characterized in that: The scale member also includes a scale sleeve, and the scale sleeve is slidably installed at the extended end of the scale plate, and the scale line is arranged at the lower edge of the scale sleeve.

7. A wall leveling construction method based on the laser-type balance calibration screeding rod according to any one of claims 1-6, characterized in that, It includes the following operation steps:

1. Find the highest protruding point of the construction wall surface as the virtual reference wall surface: First, take a rib punching rod, set it as the first rib punching rod, fix it at any point on the wall with cement and punch out a rib, use its own laser device and verticality meter for alignment. Then, with the first rib punching rod as the reference, move a movable rib punching rod on the wall continuously, set the movable rib punching rod as the second rib punching rod, refer to the scale markings of the alignment structure of the rib punching rod for the laser, and take the point that is the highest and outwards from the middle of the scale deviation as the highest protruding point of the entire construction wall surface. Then, fix the second rib punching rod at the position of the highest protruding point with cement, and also use its own laser device and verticality meter for alignment. Take the imaginary plane passing through the highest protruding point and parallel to the construction wall surface as the virtual reference wall surface; 2. Refer to the above virtual reference wall surface to determine the rib punching plane with the least construction quantity: Form a thinnest cement mortar rib at the above-mentioned second ribbing rod with cement mortar, which is the ribbing plane with the least construction quantity. Adjust at least one movable ribbing rod to be used according to the laser scale markings corresponding to the above-mentioned virtual reference wall surface so that both its levelness and verticality meet the standards; III. Standard construction according to the ribbing plane: Use one or more of the above-aligned movable ribbing rods for ribbing to complete plastering construction that meets the standards.

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