Semi-automatic construction method for machine-sprayed light plastering mortar

Abstract

The invention relates to the technical field of building construction, in particular to a semi-automatic construction method for machine spraying of light plastering mortar, which comprises the following steps: S1, wall surface base layer treatment, S2, rule finding to confirm the plastering thickness, S3, machine spraying of mortar, S4, mortar leveling and calendaring, and S5, field cleaning and wall surface maintenance. A leveling device in the step S4 comprises a scraping plate and two supporting rods, each supporting rod comprises a rod body, an upper base and a lower base, the upper base and the lower base are arranged at the two ends of the rod body, the length of the rod body is adjustable, an adjusting bolt is arranged on the lower base, and the adjusting bolt is connected with a sleeve embedded in the ground of the building structure; a mounting base is further arranged on the rod body and can slide up and down along the rod body, and the scraper is connected to the mounting base. According to the construction method, the construction mode that the light mortar is sprayed on the whole wall surface and the leveling device is matched to complete leveling and calendaring of the whole wall body at a time is adopted, cracking caused by shrinkage difference between new and old materials is avoided, and the wall surface plastering construction quality is improved.

Description

Technical Field

[0001] The invention relates to the technical field of building construction, in particular to a semi-automatic construction method of machine-sprayed lightweight plaster mortar. Background Art

[0002] In building decoration projects, plastering construction is an important part of wall leveling and structural protection. In the prior art, the use of a spraying machine can realize the integration of automated mortar transportation and spraying, which reduces the waiting time for manual handling, mixing and layered application. Mechanized pipeline transportation can effectively avoid material segregation and leakage caused by manual transportation, ensuring the homogeneity and stability of the mortar. However, there are still some shortcomings, as described below: In the construction of building wall plastering, in order to ensure the flatness of the wall surface, vertical or horizontal concrete reinforcements are usually set as the basis for the thickness of the plastering. However, in this way, the plastering construction needs to wait until the concrete reinforcements harden and solidify before it can be carried out, which affects the construction efficiency; and the construction process of making concrete reinforcements first and then plastering is prone to cracking at the junction of the new and old concrete on both sides of the reinforcements due to shrinkage differences, which affects the quality of the plastering construction.

[0003] Therefore, in the plastering construction of building walls, how to improve the construction efficiency and the construction quality of the wall surface is a technical problem to be solved urgently in the prior art. Summary of the invention

[0004] The purpose of the present invention is to provide a semi-automatic construction method for machine-sprayed lightweight plastering mortar, in view of the problem that in the prior art, plastering construction needs to wait until the concrete reinforcement bars harden and solidify before it can be carried out, which affects the construction efficiency; and in the construction process of first making the concrete reinforcement bars and then plastering, the junction between the new and old concrete on both sides of the reinforcement bars is prone to cracking due to the shrinkage difference.

[0005] In order to achieve the above object, the technical solution adopted by the present invention is: A semi-automatic construction method of machine-sprayed lightweight plaster mortar, comprising the following steps: S1. Wall surface treatment: chisel out the hollow structure on the wall surface, then use a wire brush or mechanical grinding to remove the floating dust on the wall surface, and finally moisten the wall with water; S2. Use the laser level to project the horizontal and vertical reference lines, and mark the ink line on the ground along the horizontal reference line. Drive the expansion bolts into the wall to be plastered, and the top of the expansion bolts should coincide with the vertical reference line. S3, mortar machine spraying on the wall: use S-shaped spraying line to spray mortar from the top to the bottom of the wall to be plastered; S4, mortar leveling and calendering: using a leveling device to level the mortar according to the plastering thickness set in step S2; S5. Site cleaning and wall maintenance: clean up the mortar spilled on the ground; and water the wall after the mortar has initially set to prevent cracking; The leveling device in step S4 includes a scraper and two support rods, wherein the support rod includes a rod body and an upper base and a lower base arranged at both ends of the rod body, the length of the rod body is adjustable, the upper base is used to abut against the roof of the building structure, and the lower base is used to abut against the ground of the building structure; the lower base is provided with an adjusting bolt, the adjusting bolt is connected to a sleeve buried in the ground of the building structure, and the adjusting bolt is used to adjust the installation flatness of the lower base; the rod body is also provided with a mounting seat, the mounting seat can slide up and down along the rod body, and the scraper is connected to the mounting seat.

[0006] Preferably, a level is also provided on the lower base, and the level is used to measure the installation flatness of the lower base.

[0007] Preferably, at least two levels are provided, wherein one of the levels is used to measure the installation flatness of the lower base in the horizontal direction, and the other level is used to measure the installation flatness of the lower base in the vertical direction.

[0008] Preferably, a collection box is provided on the top of the scraper, the collection box is connected to the mounting seat, the length dimension of the collection box matches the length dimension of the scraper, and the side of the collection box facing the wall is set as an open surface; a rolling shaft is provided inside the collection box, and a plurality of scraping strips are provided at intervals on the surface of the rolling shaft, with the central axis of the rolling shaft as the rotation axis, and the tangent of the circle formed by the rotation of the scraping strip coincides with the plane of the scraper contacting the mortar; a motor is also provided on the side of the aggregate box, and the motor is used to drive the rolling shaft to rotate.

[0009] Preferably, the scraping strip is arranged obliquely on the surface of the rolling shaft.

[0010] Preferably, the side of the scraping strip in contact with the mortar is configured as a serrated structure.

[0011] Preferably, the bottom of the aggregate box is divided into a first bottom area and a second bottom area, the first bottom area is arranged close to the side of the scraper contacting the mortar, and the first bottom area is arranged as an open structure; the scraper includes a main crossbeam and a bearing plate, the bearing plate is connected to the mounting seat, and a first spring is arranged between the main crossbeam and the bearing plate; There is a first matching state and a second matching state between the main cross beam and the aggregate box, When the scraping strip passes through the first bottom area, the scraping strip applies a downward extrusion force on the main beam, so that the first spring is compressed, and a gap is formed between the main beam and the bottom of the aggregate box, and the two form a first mating state; when the scraping strip moves away from the first bottom area, the first spring applies an upward thrust force on the main beam, and when the main beam abuts against the bottom of the aggregate box, the two form a second mating state.

[0012] Preferably, a limiting column is provided on the bearing plate, and a limiting channel matching the outer diameter of the limiting column is provided on the main cross beam, and the limiting column is inserted into the limiting channel, and when the main cross beam and the aggregate box are switched between the first mating state and the second mating state, the limiting column slides along the limiting channel.

[0013] Preferably, the cross section of the second bottom area is configured as an arc surface, and the radius of the arc surface of the second bottom area matches the radius of the circle formed by the rotation of the scraping strip.

[0014] Preferably, a deceleration component and a receiving groove are further provided on the top of the main crossbeam, the central axis of the receiving groove is arranged parallel to the central axis of the limiting channel, and the side of the receiving groove is provided with an opening connected to the limiting channel; the deceleration component includes a stop column and a stop block, one end of the stop column protrudes out of the surface of the second bottom area, and the other end is inserted into the receiving groove, the stop block is connected to the end of the stop column inserted into the receiving groove, and the central axis of the stop block forms an acute angle with the central axis of the stop column, the stop block extends into the limiting channel, and the stop block can rotate in the direction of approaching the stop column; a second spring is also provided at the bottom of the receiving groove, and the stop column is connected to the second spring; The limiting column is arranged corresponding to the second bottom area, and a clamping groove is arranged on one side of the end of the limiting column; The deceleration component and the limiting column have a snap-fitting form and a separation fitting form; When the scraping strip passes through the first bottom area, so that the main crossbeam and the aggregate box change from the second matching state to the first matching state, the stopper abuts against the side of the limit column and slides downward, and when the stopper extends into the slot, a snap-fitting state is formed between the deceleration component and the limit column, and at this time, the main crossbeam and the aggregate box maintain the first matching state; When the scraping strip passes through the second bottom area, a downward squeezing force is applied to the stop column, so that the second spring is compressed and the stop column slides downward. During this process, the stop block rotates toward the direction of the stop column and is recovered into the accommodating groove, and a separated mating state is formed between the deceleration component and the limit column. At this time, the main crossbeam and the aggregate box are changed from the first mating state to the second mating state.

[0015] Preferably, the expansion bolts are removed after the leveling device is calibrated.

[0016] Preferably, the thickness of one spraying during the operation of spraying the mortar onto the wall by the mortar machine is less than or equal to 10 mm.

[0017] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are: 1. The semi-automatic construction method of machine-sprayed lightweight plastering mortar described in the present invention locates the installation position of the leveling device according to the ink line set on the building floor and the expansion bolt driven into the wall, screws the adjusting bolt into the sleeve buried in the ground of the building structure, and adjusts the installation flatness of the lower base, then extends the rod body so that the upper base abuts against the roof of the building structure. At this time, the support rod can form a stable rigid support to ensure that the scraper can always keep moving on the finished surface of the plastering, thereby achieving precise leveling of the mortar. Compared with the traditional construction method of setting ribs, the rib construction and the time to wait for the ribs to harden and solidify are omitted, greatly shortening and improving the construction efficiency; and the invention adopts a construction method of spraying lightweight mortar on the entire wall, and cooperates with the leveling device to complete the leveling and polishing of the entire wall at one time, avoiding cracking due to shrinkage differences between new and old materials, and improving the quality of wall plastering construction; 2. In the semi-automatic construction method of machine-sprayed lightweight plaster mortar described in the present invention, during the rotation of the rolling shaft, the main crossbeam and the aggregate box can perform high-frequency switching between a first matching state and a second matching state, so that the main crossbeam forms a periodic up and down rubbing action. In this process, the high-frequency vibration generated by the main crossbeam is transmitted to the mortar layer, which can effectively accelerate the discharge of bubbles in the mortar, thereby significantly reducing the risk of blistering and hollowing on the wall. At the same time, during the up and down rubbing process, the main crossbeam can also repeatedly compact the mortar and fill the surface depressions of the finished plastering surface, thereby significantly improving the overall flatness of the wall; 3. In the semi-automatic construction method of machine-sprayed lightweight plaster mortar described in the present invention, when the scraping strip passes through the first bottom area, so that the main beam and the aggregate box are in the first matching state, the deceleration component locks the main beam, and at this time, the interval gap formed between the rolling shaft and the main beam increases, and the resistance encountered by the mortar pushed by the scraping strip during the movement is reduced. When the mortar moves from the first bottom area to the wall surface, it can generate greater kinetic energy, thereby further improving the stability of the mortar attached to the wall. In addition, in the process of the scraping strip gradually passing through the wall plastering surface, the main beam always remains in a stationary state, thereby avoiding the excess mortar on the wall surface from pouring in from the side opening of the aggregate box and conflicting with the mortar added to the wall, thereby improving the practicality of the present invention in actual use. Furthermore, in the process of the leveling strip gradually sliding across the wall plastering surface, the main crossbeam and the aggregate box always maintain the first matching state, at which time the exposed area of ​​the wall directly facing the rolling shaft is the largest, and then when the mortar is added to the wall, the missing area can be filled more fully, thus further improving the uniformity of the mortar distribution on the wall surface, and laying a good foundation for the subsequent mortar leveling construction; On the other hand, when the scraping strip leaves the first bottom area, the main crossbeam will not rebound and come into contact with the scraping strip, thus reducing the risk of damage caused by friction and collision between the two and extending the service life of the present invention. On the other hand, when the mortar in the aggregate box is added to the wall, the main crossbeam is prevented from hindering the rotation of the rolling shaft, thereby further increasing the kinetic energy generated when the mortar moves from the first bottom area to the wall surface, ensuring the stability of the mortar attached to the wall. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the leveling device; Figure 2 yes Figure 1 The structural diagram of A in the figure; Figure 3 yes Figure 2 Schematic diagram of the structure of B; Figure 4 It is a structural schematic diagram of the lower base; Figure 5 It is a structural schematic diagram showing that the deceleration component and the limit column form a separated matching state, and the main crossbeam and the aggregate box change from a first matching state to a second matching state; Figure 6 yes Figure 5 Schematic diagram of the structure of C; Figure 7 The present invention is a schematic diagram of the process of semi-automatic construction method of machine-sprayed lightweight plaster mortar.

[0019] Markings in the figure: 1-scraper, 2-support rod, 3-upper base, 4-lower base, 5-rod body, 6-adjusting bolt, 7-mounting seat, 8-level meter, 9-aggregate box, 10-rolling shaft, 11-scraping strip, 12-first bottom area, 13-second bottom area, 14-main beam, 15-bearing plate, 16-first spring, 17-limiting column, 18-limiting channel, 19-deceleration component, 20-accommodating groove, 21-stop column, 22-block, 23-second spring, 24-slot. DETAILED DESCRIPTION

[0020] The present invention will be described in detail below in conjunction with the accompanying drawings.

[0021] To make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be described clearly and completely in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them.

[0022] Therefore, the following detailed description of the embodiments of the present invention is not intended to limit the scope of the invention claimed for protection, but merely represents some embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features and technical solutions in the embodiments may be combined with each other.

[0024] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0025] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the invention product is usually placed when in use, or the orientation or positional relationship commonly understood by those skilled in the art. Such terms are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0026] Example 1: Figure 1 , Figure 2 , Figure 3 , Figure 4 ,and Figure 7As shown, the semi-automatic construction method of the machine-sprayed lightweight plaster mortar described in the present invention comprises the following steps: S1. Wall surface treatment: chisel out the hollow structure on the wall surface, then use a wire brush or mechanical grinding to remove the floating dust on the wall surface, and finally moisten the wall with water; S2. Find the rule to confirm the plastering thickness: Use the laser level 8 to project the horizontal reference line and the vertical reference line, and set the ink line on the ground along the horizontal reference line, and drive the expansion bolt into the wall to be plastered, so that the top of the expansion bolt coincides with the vertical reference line; S3, mortar machine spraying on the wall: use S-shaped spraying line to spray mortar from the top to the bottom of the wall to be plastered; S4, mortar leveling and calendering: using a leveling device to level the mortar according to the plastering thickness set in step S2; S5. Site cleaning and wall maintenance: clean up the mortar spilled on the ground; and water the wall after the mortar has initially set to prevent cracking; The leveling device in step S4 includes a scraper 1 and two support rods 2, wherein the support rod 2 includes a rod body 5 and an upper base 3 and a lower base 4 arranged at both ends of the rod body 5, the length of the rod body 5 is adjustable, the upper base 3 is used to abut the roof of the building structure, and the lower base 4 is used to abut the ground of the building structure; the lower base 4 is provided with an adjusting bolt 6, the adjusting bolt 6 is connected to a sleeve buried in the ground of the building structure, and the adjusting bolt 6 is used to adjust the installation flatness of the lower base 4; the rod body 5 is also provided with a mounting seat 7, the mounting seat 7 can slide up and down along the rod body 5, and the scraper 1 is connected to the mounting seat 7.

[0027] By adopting the semi-automatic construction method of machine-sprayed lightweight plastering mortar described in the present invention, after locating the installation position of the leveling device according to the ink line set on the building floor and the expansion bolts driven into the wall, the adjusting bolt 6 is screwed into the sleeve buried in the ground of the building structure, and after the installation flatness of the lower base 4 is leveled, the rod body 5 is extended to make the upper base 3 abut against the roof of the building structure. At this time, the support rod 2 can form a stable rigid support to ensure that the scraper 1 can always keep moving on the finished surface of the plastering, thereby realizing accurate leveling of the mortar.

[0028] Compared with the traditional construction method of setting reinforcement bars, the reinforcement bar construction and the time of waiting for the reinforcement bar to harden and solidify are eliminated, which greatly improves the construction efficiency; and the invention adopts a construction method of spraying lightweight mortar on the entire wall, and cooperates with the leveling device to complete the leveling and polishing of the entire wall at one time, which avoids cracking due to shrinkage differences between new and old materials and improves the quality of wall plastering construction.

[0029] Specifically, in this embodiment, the lower base 4 is designed with a rectangular structure, and the adjusting bolts 6 are respectively arranged at the four vertex positions of the lower base 4. The installation position of the leveling device is located by using the ink line set on the building floor and the expansion bolts driven into the wall. The specific operation steps are as follows: First, using the ink line as the reference line, use the laser level 8 to project a horizontal auxiliary line on the ground, and eject the horizontal auxiliary ink line as a mark, which corresponds to the length edge line of the lower base 4. Next, use the laser level 8 to project a vertical auxiliary line on the ground, and eject the vertical auxiliary ink line as a mark, which corresponds to the width edge line of the lower base 4.

[0030] Then, align the structural edge of the lower base 4 with the horizontal auxiliary line and the vertical auxiliary line, and mark the position of the adjusting bolt 6 on the ground. After that, open a pre-buried hole on the ground and bury the sleeve. After screwing the adjusting bolt 6 into the sleeve buried in the ground of the building structure, first adjust the installation flatness of the lower base 4, and then confirm that the scraping surface of the scraper 1 abuts against the top of the expansion bolt, and the installation of the leveling device is completed.

[0031] In this embodiment, when the leveling device is moved to the next plastering construction surface, the scraper 1 must first be removed from the mounting seat 7. Then, the support rod 2 away from the next plastering construction surface is removed. After completing the above steps, the scraper 1 is first connected to the mounting seat 7 provided on the unremoved support rod 2. Then, the scraper 1 is connected to the mounting seat 7 provided on the removed support rod 2, so that the scraper 1 can be used to determine the installation position of the removed support rod 2, and the corresponding position is marked on the ground structure. Then, a pre-buried hole is opened at this position and a sleeve is buried. Then, the adjusting bolt 6 is screwed into the sleeve, and the installation flatness of the lower base 4 is adjusted to ensure that the scraping surface of the scraper 1 is consistent with the pre-set plastering thickness.

[0032] As a preferred implementation, based on the above-mentioned implementation, further, a level 8 is provided on the lower base 4 , and the level 8 is used to measure the installation flatness of the lower base 4 .

[0033] In this embodiment, the level meter 8 is provided, and construction workers can visually observe whether the installation flatness of the lower base 4 meets the requirements, thereby greatly improving the installation convenience and installation accuracy of the support rod 2.

[0034] As a preferred embodiment, on the basis of the above-mentioned manner, further, at least two levels 8 are provided, wherein one level 8 is used to measure the installation flatness of the lower base 4 in the horizontal direction, and the other level 8 is used to measure the installation flatness of the lower base 4 in the vertical direction. With this structural setting, the flatness of the lower base 4 in the horizontal and vertical directions can be monitored respectively, thereby further ensuring the flatness of the lower base 4 during installation.

[0035] Example 2: Figure 2 and Figure 6 As shown, the semi-automatic construction method of machine-sprayed lightweight plaster mortar described in the present invention is based on the above method, and further, a collection box 9 is arranged on the top of the scraper 1, and the collection box 9 is connected to the mounting seat 7, the length dimension of the collection box 9 matches the length dimension of the scraper 1, and the side of the collection box 9 facing the wall is set as an open surface; a rolling shaft 10 is arranged inside the collection box 9, and a plurality of scraping strips 11 are arranged at intervals on the surface of the rolling shaft 10, and the central axis of the rolling shaft 10 is used as the rotation axis, and the tangent of the circle formed by the rotation of the scraping strip 11 coincides with the plane of the scraper 1 contacting the mortar; a motor is also arranged on the side of the collection box 9, and the motor is used to drive the rolling shaft 10 to rotate.

[0036] Specifically, in the process of mortar leveling in this embodiment, the mortar can be initially leveled by the rotation of the rolling shaft 10. This step not only significantly improves the uniformity of the mortar distribution on the wall surface, but also lays a good foundation for subsequent construction. Furthermore, the leveling strip 11, driven by the rolling shaft 10, can also scrape off the mortar that is too thick on the wall and transfer it to the aggregate box 9 for centralized collection, which effectively avoids excessive waste of mortar materials. Furthermore, in this embodiment, a certain amount of mortar can be stored in advance in the aggregate box 9. When performing the mortar leveling operation, the rolling shaft 10 drives the leveling bar 11 to rotate, and at the same time, the mortar in the aggregate box 9 can be added to the places on the wall where the mortar is insufficiently distributed. In this way, the uniform distribution of the mortar on the wall surface is further enhanced, laying a solid foundation for the subsequent construction work.

[0037] As a preferred embodiment, on the basis of the above-mentioned manner, further, the scraping strip 11 is obliquely arranged on the surface of the rolling shaft 10. With the arrangement structure, the scraping strip 11 can better scrape the excess mortar on the wall surface. In addition, the obliquely arranged scraping strip 11 can also generate a certain horizontal thrust when rotating, thereby improving the adhesion stability of the mortar added to the wall and ensuring the molding quality of the wall surface.

[0038] As a preferred embodiment, on the basis of the above-mentioned method, further, the side of the scraping strip 11 in contact with the mortar is set to a sawtooth structure. With this structural setting, the scraping strip 11 can leave strip-shaped scratches on the mortar on the wall surface when it passes through the mortar on the wall surface. In this way, during the operation of adding the mortar in the aggregate box 9 to the wall, the adhesion stability of the mortar can be further improved, ensuring the molding quality of the wall surface. In addition, the strip-shaped scratches formed by the scraping strip 11 also help release the air mixed in the mortar, effectively reducing the risk of bubbling and hollowing on the wall surface.

[0039] Example 3: Figures 2 to 6 As shown, the semi-automatic construction method of the machine-sprayed lightweight plaster mortar of the present invention is based on the above method, and further, the bottom of the aggregate box 9 is divided into a first bottom area 12 and a second bottom area 13, the first bottom area 12 is arranged on the side of the scraper 1 contacting the mortar, and the first bottom area 12 is arranged as an open structure; the scraper 1 includes a main crossbeam 14 and a bearing plate 15, the bearing plate 15 is connected to the mounting seat 7, and a first spring 16 is arranged between the main crossbeam 14 and the bearing plate 15; The main cross beam 14 and the aggregate box 9 have a first matching state and a second matching state. When the scraping strip 11 passes through the first bottom area 12, the scraping strip 11 applies a downward extrusion force on the main beam 14, so that the first spring 16 is compressed, and a gap is formed between the main beam 14 and the bottom of the aggregate box 9, and the two form a first matching state; when the scraping strip 11 moves away from the first bottom area 12, the first spring 16 applies an upward thrust force on the main beam 14, and when the main beam 14 abuts against the bottom of the aggregate box 9, the two form a second matching state.

[0040] Specifically, in this embodiment, during the rotation of the rolling shaft 10, the main crossbeam 14 and the aggregate box 9 can switch between the first matching state and the second matching state at a high frequency, so that the main crossbeam 14 forms a periodic up and down rubbing action. In this process, the high-frequency vibration generated by the main crossbeam 14 is transmitted to the mortar layer, which can effectively accelerate the discharge of bubbles in the mortar, thereby significantly reducing the risk of bubbling and hollowing on the wall. At the same time, during the up and down rubbing process, the main crossbeam 14 can also repeatedly compact the mortar and fill the surface depressions of the plastered surface, thereby significantly improving the overall flatness of the wall.

[0041] In this embodiment, when performing a specific operation of smoothing the mortar, the scraper 1 is moved a certain distance and then paused, waiting for the main beam 14 to rub up and down for a certain period of time to ensure that the mortar in the area is fully compacted and smoothed, and then continues to move. It should be noted that the distance that the scraper 1 moves in a single time does not exceed the width of the main beam 14.

[0042] As a preferred embodiment, on the basis of the above-mentioned manner, further, a limiting column 17 is provided on the bearing plate 15, and a limiting channel 18 matching the outer diameter of the limiting column 17 is provided on the main crossbeam 14, and the limiting column 17 is inserted in the limiting channel 18. When the main crossbeam 14 and the aggregate box 9 are switched between the first matching state and the second matching state, the limiting column 17 slides along the limiting channel 18. This structural setting can effectively limit the lateral freedom of movement of the main crossbeam 14, and prevent the scraping surface of the main crossbeam 14 from exceeding the finished surface of the plastering during the mortar leveling operation, thereby further ensuring the overall flatness of the wall after plastering.

[0043] As a preferred embodiment, based on the above-mentioned method, further, the cross section of the second bottom area 13 is set as an arc surface, and the radius of the arc surface of the second bottom area 13 matches the radius of the circle formed by the rotation of the scraping strip 11. With this structural setting, mortar can be prevented from accumulating in the second bottom area 13, thereby improving the practicality of the present invention in actual use.

[0044] Example 4: Figures 2 to 6 As shown, the semi-automatic construction method of machine-sprayed lightweight plaster mortar described in the present invention, on the basis of the above method, further, a deceleration component 19 and a receiving groove 20 are further provided on the top of the main crossbeam 14, the central axis of the receiving groove 20 is arranged parallel to the central axis of the limiting channel 18, and the side of the receiving groove 20 is provided with an opening connected to the limiting channel 18; the deceleration component 19 includes a stop column 21 and a stop block 22, one end of the stop column 21 protrudes from the surface of the second bottom area 13, and the other end is inserted into the receiving groove 20, the stop block 22 is connected to the end of the stop column 21 inserted into the receiving groove 20, the central axis of the stop block 22 forms an acute angle with the central axis of the stop column 21, the stop block 22 extends into the limiting channel 18, and the stop block 22 can rotate in the direction of approaching the stop column 21; a second spring 23 is also provided at the bottom of the receiving groove 20, and the stop column 21 is connected to the second spring 23; The limiting column 17 is arranged corresponding to the second bottom area 13, and a clamping groove 24 is arranged on one side of the end of the limiting column 17; The deceleration component 19 and the limiting column 17 have a snap-fitting form and a separation fitting form; When the scraping strip 11 passes through the first bottom area 12, so that the main crossbeam 14 and the aggregate box 9 change from the second matching state to the first matching state, the stopper 22 abuts against the side of the limit column 17 and slides downward. When the stopper 22 extends into the slot 24, a snap-fitting state is formed between the deceleration component 19 and the limit column 17, and at this time, the main crossbeam 14 and the aggregate box 9 maintain the first matching state; When the scraping strip 11 passes through the second bottom area 13, a downward squeezing force is applied to the stop column 21, so that the second spring 23 is compressed and the stop column 21 slides downward. During this process, the block 22 rotates toward the direction of the stop column 21 and is recovered into the accommodating groove 20. A separated mating state is formed between the deceleration component 19 and the limiting column 17. At this time, the main cross beam 14 and the aggregate box 9 are changed from the first mating state to the second mating state.

[0045] Specifically, in this embodiment, when the scraping strip 11 passes through the first bottom area 12, so that the main beam 14 and the aggregate box 9 are in the first matching state, the deceleration component 19 locks the main beam 14. At this time, the gap formed between the rolling shaft 10 and the main beam 14 increases, and the resistance encountered by the mortar pushed by the scraping strip 11 during the movement process is reduced. When the mortar moves from the first bottom area 12 to the wall surface, it can generate greater kinetic energy, thereby further improving the stability of the mortar attached to the wall. In addition, when the scraping strip 11 gradually passes through the plastered surface of the wall, the main beam 14 always remains in a stationary state, thereby avoiding the excess mortar on the wall surface from pouring in from the side opening of the aggregate box 9 and conflicting with the mortar added to the wall, thereby improving the practicality of the present invention in actual use. Furthermore, in the process of the leveling strip 11 gradually sliding across the wall plastering surface, the main crossbeam 14 and the aggregate box 9 always maintain the first matching state, at which time the exposed area of ​​the wall directly facing the rolling shaft 10 is the largest, and then when the mortar is added to the wall, the missing area can be more fully filled, thus further improving the uniformity of the mortar distribution on the wall surface, and laying a good foundation for the subsequent mortar leveling construction; On the other hand, when the scraping strip 11 leaves the first bottom area 12, the main crossbeam 14 will not rebound and come into contact with the scraping strip 11, thus reducing the risk of damage caused by friction and collision between the two and extending the service life of the present invention. On the other hand, when the mortar in the aggregate box 9 is added to the wall, the main crossbeam 14 is prevented from hindering the rotation of the rolling shaft 10, thereby further increasing the kinetic energy generated when the mortar moves from the first bottom area 12 to the wall surface, ensuring the stability of the mortar attached to the wall.

[0046] Example 5: Figure 1 As shown, the semi-automatic construction method of the machine-sprayed lightweight plaster mortar described in the present invention is based on the above method, and further, the expansion bolts are removed after the leveling device is calibrated. With this structural setting, the expansion bolts can be prevented from rusting, thereby further improving the construction quality.

[0047] As a preferred embodiment, on the basis of the above-mentioned manner, further, in the operation of spraying the mortar machine onto the wall, the thickness of one spraying is less than or equal to 10 mm.

[0048] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A semi-automatic construction method of machine-sprayed lightweight plaster mortar, characterized in that: The steps include: S1. Wall surface treatment: chisel out the hollow structure on the wall surface, then use a wire brush or mechanical grinding to remove the floating dust on the wall surface, and finally moisten the wall with water; S2. Use the laser level to project the horizontal and vertical reference lines, and mark the ink line on the ground along the horizontal reference line. Drive the expansion bolts into the wall to be plastered, and the top of the expansion bolts should coincide with the vertical reference line. S3, mortar machine spraying on the wall: use S-shaped spraying line to spray mortar from the top to the bottom of the wall to be plastered; S4, mortar leveling and calendering: using a leveling device to level the mortar according to the plastering thickness set in step S2; S5. Site cleaning and wall maintenance: clean up the mortar spilled on the ground; and water the wall after the mortar has initially set to prevent cracking; The leveling device in step S4 includes a scraper and two support rods, wherein the support rod includes a rod body and an upper base and a lower base arranged at both ends of the rod body, the length of the rod body is adjustable, the upper base is used to abut against the roof of the building structure, and the lower base is used to abut against the ground of the building structure; the lower base is provided with an adjusting bolt, the adjusting bolt is connected to a sleeve buried in the ground of the building structure, and the adjusting bolt is used to adjust the installation flatness of the lower base; the rod body is also provided with a mounting seat, the mounting seat can slide up and down along the rod body, and the scraper is connected to the mounting seat.

2. The semi-automatic construction method of machine-sprayed lightweight plaster mortar according to claim 1 is characterized in that: The lower base is also provided with a level meter, and the level meter is used to measure the installation flatness of the lower base.

3. The semi-automatic construction method of machine-sprayed lightweight plaster mortar according to claim 2 is characterized in that: At least two levels are provided, wherein one of the levels is used to measure the installation flatness of the lower base in the horizontal direction, and the other level is used to measure the installation flatness of the lower base in the vertical direction.

4. The semi-automatic construction method of machine-sprayed lightweight plaster mortar according to claim 3 is characterized in that: A collection box is arranged on the top of the scraper, and the collection box is connected to the mounting seat. The length dimension of the collection box matches the length dimension of the scraper, and the side of the collection box facing the wall is arranged as an open side; a rolling shaft is arranged inside the collection box, and a plurality of scraping strips are arranged at intervals on the surface of the rolling shaft, and the central axis of the rolling shaft is used as the rotation axis. The tangent of the circle formed by the rotation of the scraping strip coincides with the plane of the scraper contacting the mortar; a motor is also arranged on the side of the aggregate box, and the motor is used to drive the rolling shaft to rotate.

5. The semi-automatic construction method of machine-sprayed lightweight plaster mortar according to claim 4 is characterized in that: The scraping strip is arranged obliquely on the surface of the rolling shaft; and the side of the scraping strip in contact with the mortar is arranged as a sawtooth structure.

6. The semi-automatic construction method of machine-sprayed lightweight plaster mortar according to claim 5 is characterized in that: The bottom of the aggregate box is divided into a first bottom area and a second bottom area, the first bottom area is arranged close to the side of the scraper contacting the mortar, and the first bottom area is arranged as an open structure; the scraper includes a main crossbeam and a bearing plate, the bearing plate is connected to the mounting seat, and a first spring is arranged between the main crossbeam and the bearing plate; There is a first matching state and a second matching state between the main cross beam and the aggregate box, When the scraping strip passes through the first bottom area, the scraping strip applies a downward extrusion force on the main beam, so that the first spring is compressed, and a gap is formed between the main beam and the bottom of the aggregate box, and the two form a first mating state; when the scraping strip moves away from the first bottom area, the first spring applies an upward thrust force on the main beam, and when the main beam abuts against the bottom of the aggregate box, the two form a second mating state.

7. The semi-automatic construction method of machine-sprayed lightweight plaster mortar according to claim 6 is characterized in that: A limiting column is arranged on the bearing plate, and a limiting channel matching the outer diameter of the limiting column is arranged on the main crossbeam. The limiting column is inserted into the limiting channel. When the main crossbeam and the aggregate box are switched between the first matching state and the second matching state, the limiting column slides along the limiting channel.

8. The semi-automatic construction method of machine-sprayed lightweight plaster mortar according to claim 7 is characterized in that: The cross section of the second bottom area is set to be an arc surface, and the radius of the arc surface of the second bottom area matches the radius of the circle formed by the rotation of the scraping strip.

9. The semi-automatic construction method of machine-sprayed lightweight plaster mortar according to claim 8 is characterized in that: A deceleration component and a receiving groove are also provided on the top of the main crossbeam, the central axis of the receiving groove is arranged parallel to the central axis of the limiting channel, and the side of the receiving groove is provided with an opening connected to the limiting channel; the deceleration component includes a stop column and a stop block, one end of the stop column protrudes out of the surface of the second bottom area, and the other end is inserted into the receiving groove, the stop block is connected to the end of the stop column inserted into the receiving groove, and the central axis of the stop block forms an acute angle with the central axis of the stop column, the stop block extends into the limiting channel, and the stop block can rotate in the direction of approaching the stop column; a second spring is also provided at the bottom of the receiving groove, and the stop column is connected to the second spring; The limiting column is arranged corresponding to the second bottom area, and a clamping groove is arranged on one side of the end of the limiting column; The deceleration component and the limiting column have a snap-fitting form and a separation fitting form; When the scraping strip passes through the first bottom area, so that the main crossbeam and the aggregate box change from the second matching state to the first matching state, the stopper abuts against the side of the limit column and slides downward, and when the stopper extends into the slot, a snap-fitting state is formed between the deceleration component and the limit column, and at this time, the main crossbeam and the aggregate box maintain the first matching state; When the scraping strip passes through the second bottom area, a downward squeezing force is applied to the stop column, so that the second spring is compressed and the stop column slides downward. During this process, the stop block rotates toward the direction of the stop column and is recovered into the accommodating groove, and a separated mating state is formed between the deceleration component and the limit column. At this time, the main crossbeam and the aggregate box are changed from the first mating state to the second mating state.

10. The semi-automatic construction method of machine-sprayed lightweight plaster mortar according to claim 1, characterized in that: After the leveling device is calibrated, the expansion bolts are removed; and in the operation of spraying the mortar on the wall with a mortar machine, the thickness of one spraying is less than or equal to 10 mm.

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