Concrete laser leveling machine
By designing a self-cleaning component on the concrete laser screed, and utilizing multi-angle high-pressure nozzles and a motor-driven adjustment mechanism, the problem of cleaning residual concrete in the equipment has been solved, achieving efficient and comprehensive cleaning results, extending equipment life and reducing maintenance costs.
Patent Information
- Application Number
- CN202422973383.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-04
- Publication Date
- 2025-10-21
- Estimated Expiration
- 2034-12-04
AI Technical Summary
After the existing concrete laser screed machine finishes the screeding operation, a large amount of concrete remains on the vibrating plate mechanism and scraper mechanism. If it is not cleaned in time, it will affect the next use of the equipment, increase maintenance costs and downtime. Moreover, traditional cleaning methods are difficult to clean the complex-shaped parts at the bottom of the equipment in a comprehensive and efficient manner.
A concrete laser screed machine was designed, equipped with self-cleaning components, including a water tank, a water spraying mechanism, and multi-angle high-pressure nozzles. Through a motor-driven height and position adjustment mechanism, it can automatically clean the bottom of the vibrating plate and scraper mechanism, ensuring the thorough cleaning of the equipment.
It enables rapid and comprehensive cleaning of the vibrating plate and scraper mechanism, reduces the impact of concrete solidification, extends equipment life, reduces maintenance costs and downtime, and improves ease of use.
Smart Images

Figure CN223459094U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the field of building engineering, and specifically, relates to a concrete laser leveling machine. BACKGROUND
[0002] In the field of building engineering, the leveling operation of concrete plays a crucial role in ground quality. The traditional concrete leveling method often relies on manual operation of simple tools, which not only has high labor intensity, but also is difficult to guarantee leveling accuracy. With the continuous improvement of building construction standards, the requirement for the flatness of concrete surface is becoming increasingly stringent. Laser leveling technology emerges as the times require, which can accurately control the working height of the leveling equipment through the cooperation of laser transmitters and receivers, greatly improving the accuracy of leveling. However, the existing concrete laser leveling machine still has some problems in actual use. After the leveling operation is completed, a large amount of concrete will be left on the vibration plate mechanism and the scraper mechanism. If it is not cleaned in time, the remaining concrete will solidify after solidification, which will seriously affect the next use effect of the equipment, reduce the working efficiency of the equipment, increase the maintenance cost and downtime of the equipment. And the traditional cleaning method is mostly manual cleaning or simple fixed nozzle flushing, which is difficult to clean the complex shape parts at the bottom of the equipment comprehensively and efficiently, and cannot meet the requirements of modern construction for speed, efficiency and high quality.
[0003] How to invent a concrete laser leveling machine to improve these problems has become a problem that needs to be solved by technical personnel in the field. CONTENT OF THE UTILITY MODEL
[0004] In order to make up for the above shortcomings, the utility model provides a concrete laser leveling machine, which aims to improve the problem that after the leveling operation of the existing concrete laser leveling machine is completed, a large amount of concrete will be left on the vibration plate mechanism and the scraper mechanism. If it is not cleaned in time, the remaining concrete will solidify after solidification, which will seriously affect the next use effect of the equipment, reduce the working efficiency of the equipment, increase the maintenance cost and downtime of the equipment.
[0005] The utility model is realized in this way: a concrete laser leveling machine, comprising a traction control part and a self-cleaning assembly, a telescopic adjusting part is fixedly installed on the traction control part, a leveling part is installed at the end of the telescopic adjusting part, the leveling part comprises a mounting part installed at the end of the telescopic adjusting part, a lifting plate is connected below the mounting part through a telescopic device, a vibration plate mechanism and a scraper mechanism are respectively installed on both sides of the bottom surface of the lifting plate, laser receivers are fixedly connected on both ends of the upper surface of the mounting part through vertical rods, the self-cleaning assembly comprises a water tank, the water tank is connected in communication with a water spraying mechanism through a water supply hose, the water spraying mechanism is arranged on a mounting plate, and the mounting plate is connected with the mounting part through a position adjusting mechanism.
[0006] In a preferred technical scheme of the utility model, the position adjusting mechanism includes two connecting base columns, two connecting base columns are fixedly installed on both ends of one side surface of the installation part through the connecting piece, the side surface of each connecting base column towards the installation part is provided with a first sliding slot, each first sliding slot is slidably provided with a first sliding block, the upper surface of each first sliding block is provided with a threaded hole, each threaded hole is threadedly connected with a height adjusting screw rod, both ends of each height adjusting screw rod are rotatably connected on the inner wall of the top and bottom of the corresponding first sliding slot, the top end of each height adjusting screw rod is fixedly connected with one end of the height adjusting motor output shaft through the through hole, two height adjusting motors are fixedly installed on the top surface of the corresponding connecting base column respectively, one side surface of each first sliding block is fixedly connected with one end of an L-shaped connecting rod respectively, the other end of two L-shaped connecting rods is connected with the mounting plate.
[0007] In a preferred technical scheme of the utility model, the upper surface of the mounting plate is provided with a second sliding slot on both sides, each second sliding slot is slidably connected with a second sliding block, two second sliding blocks are fixedly connected with one end of the corresponding L-shaped connecting rod respectively, the upper surface of the mounting plate is also fixedly installed with a connecting plate, the side surface of the connecting plate is also provided with a threaded hole, the threaded hole is threadedly connected with a position adjusting screw rod, one end of the position adjusting screw rod is fixedly connected with one end of the position adjusting motor output shaft, the position adjusting motor is fixedly connected between two L-shaped connecting rods through the motor frame, the side surface of the mounting plate is also slidably connected with two sliding plates.
[0008] In a preferred technical scheme of the utility model, the water spraying mechanism includes a water storage box, the water storage box is fixedly installed on the top surface of two L-shaped connecting rods, the water storage box and the water tank are communicated and connected through the water supply hose, two water delivery pumps are also fixedly installed on the side surface of the water storage box, the water suction end of each water delivery pump extends to the inside of the water storage box, the water outlet end of each water delivery pump is communicated and connected with a liquid flow divider, and is communicated and connected with one end of a plurality of water delivery hoses through the corresponding liquid flow divider respectively, the other end of each water delivery hose is communicated and connected with the corresponding high-pressure nozzle, all high-pressure nozzles located on the same side are fixedly installed on the upper surface of the corresponding sliding plate on one side, and two sliding plates are connected with the driving mechanism.
[0009] In a preferred technical scheme of the utility model, the third sliding groove is set on one side surface of the mounting plate, a bidirectional threaded rod is rotationally connected between the inner walls of the two ends of the third sliding groove, one end of each sliding plate is slidingly installed in the third sliding groove, a screw hole is formed through one end surface of each sliding plate, the two sliding plates are threadedly connected at the two ends of the bidirectional threaded rod through the screw holes, one end of the bidirectional threaded rod is fixedly connected with one end of the output shaft of the driving motor through a through hole formed in the inner wall of one end of the third sliding groove, and the driving motor is fixedly installed on the other side surface of the mounting plate.
[0010] In a preferred technical scheme of the utility model, the number of high-pressure nozzles arranged on each sliding plate is at least two, and the angles of the two high-pressure nozzles are different.
[0011] The utility model discloses the beneficial effect is: the utility model discloses a concrete laser leveling machine through the above -mentioned design, when using, the self -cleaning component can be after the leveling operation complete and rapidly clean the bottom surface of vibration plate mechanism and scraper mechanism, effectively reduce the remaining concrete solidification influence leveling operation effect's condition, prolong the service life of equipment, reduce maintenance cost and downtime, not only carry out the comprehensive efficient cleaning to the equipment, but also can realize the storage and unfolding of mounting plate, further improve the convenience in the use process. ACCURACY OF DRAWINGS
[0012] In order to more clearly illustrate the technical scheme of the embodiment of the utility model, the following will be briefly introduced to the drawing needed to be used in the embodiment, and it should be understood that the following drawings only show some embodiments of the utility model, and should not be regarded as the limitation to the scope, for the ordinary skilled person in the art, under the premise of not paying the creative labor, can also obtain other related drawings according to these drawings.
[0013] Figure 1 It is the whole structure schematic perspective drawing provided by the embodiment of the utility model;
[0014] Figure 2 It is another side whole structure schematic perspective drawing provided by the embodiment of the utility model;
[0015] Figure 3 It is the leveling part and the whole connection structure schematic perspective drawing of self -cleaning component provided by the embodiment of the utility model;
[0016] Figure 4 It is the whole structure schematic perspective drawing of self -cleaning component provided by the embodiment of the utility model;
[0017] Figure 5 It is the whole separation structure schematic perspective drawing of position adjusting mechanism in the self -cleaning component provided by the embodiment of the utility model;
[0018] Figure 6 The self-cleaning assembly provided by the embodiment of the utility model is a self-cleaning assembly provided by the embodiment of the utility model.
[0019] In the figure: 1 - traction control part; 2 - telescopic adjusting part; 3 - leveling part; 4 - self-cleaning assembly; 301 - mounting part; 302 - telescopic device; 303 - lifting plate; 304 - vibrating plate mechanism; 305 - scraper mechanism; 306 - laser receiver; 401 - water tank; 402 - water supply hose; 403 - mounting plate; 404 - water storage box; 405 - connecting base column; 406 - first sliding groove; 407 - first sliding block; 408 - height adjusting screw; 409 - height adjusting motor; 410 - L-shaped connecting rod; 411 - second sliding block; 412 - second sliding groove; 413 - connecting plate; 414 - position adjusting screw; 415 - position adjusting motor; 416 - motor frame; 417 - third sliding groove; 418 - bidirectional threaded rod; 419 - driving motor; 420 - sliding plate; 421 - screw hole; 422 - water delivery pump; 423 - liquid flow divider; 424 - water delivery hose; 425 - high-pressure spray head. DETAILED DESCRIPTION
[0020] In order to make the purpose, technical scheme and advantages of the embodiment of the utility model clearer, the technical scheme in the embodiment of the utility model will be described clearly and completely below in combination with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.
[0021] Please refer to Figures 1 to 6 The utility model provides a kind of technical scheme: a concrete laser leveling machine, including traction control part 1 and self-cleaning assembly 4, traction control part 1 is fixedly installed with telescopic adjusting part 2, telescopic adjusting part 2 end is installed with leveling part 3, and leveling part 3 includes mounting part 301 installed in telescopic adjusting part 2 end, and lifting plate 303 is connected with telescopic device 302 below mounting part 301, and vibrating plate mechanism 304 and scraper mechanism 305 are respectively installed on the bottom surface both sides of lifting plate 303, and laser receiver 306 is fixedly connected with both ends of mounting part 301 upper surface by vertical rod, and self-cleaning assembly 4 includes water tank 401, water tank 401 is connected with water spraying mechanism by water supply hose 402, water spraying mechanism is set on mounting plate 403, and mounting plate 403 is connected with mounting part 301 by position adjusting mechanism.
[0022] It should be noted that the structure and function of the traction control part 1, the telescopic adjustment part 2 and the leveling part 3 are consistent with the existing concrete laser leveling machine, and the specific structure and function of the traction control part 1, the telescopic adjustment part 2 and the leveling part 3 are not described here.
[0023] Please refer to Figures 2 to 4 The position adjusting mechanism comprises two connecting base columns 405, which are fixedly installed on both ends of the side surface of the mounting part 301 through connecting pieces. Each connecting base column 405 is provided with a first sliding groove 406 towards the side surface of the mounting part 301. Each first sliding groove 406 is slidably provided with a first sliding block 407. A threaded hole is formed in the upper surface of each first sliding block 407. A height adjusting screw rod 408 is threadedly connected in each threaded hole. The two ends of each height adjusting screw rod 408 are rotatably connected to the inner walls of the top and bottom of the corresponding first sliding groove 406. The top end of each height adjusting screw rod 408 is fixedly connected to one end of the output shaft of a corresponding height adjusting motor 409 through a through hole. Two height adjusting motors 409 are fixedly installed on the top surface of the corresponding connecting base column 405. One end of an L-shaped connecting rod 410 is fixedly connected to the side surface of each first sliding block 407. The other end of the two L-shaped connecting rods 410 is connected to the mounting plate 403.
[0024] The position adjusting mechanism comprises two connecting base columns 405, which are fixedly installed on both ends of the side surface of the mounting part 301 through connecting pieces. Each connecting base column 405 is provided with a first sliding groove 406 towards the side surface of the mounting part 301. Each first sliding groove 406 is slidably provided with a first sliding block 407. A threaded hole is formed in the upper surface of each first sliding block 407. A height adjusting screw rod 408 is threadedly connected in each threaded hole. The two ends of each height adjusting screw rod 408 are rotatably connected to the inner walls of the top and bottom of the corresponding first sliding groove 406. The top end of each height adjusting screw rod 408 is fixedly connected to one end of the output shaft of a corresponding height adjusting motor 409 through a through hole. Two height adjusting motors 409 are fixedly installed on the top surface of the corresponding connecting base column 405. One end of an L-shaped connecting rod 410 is fixedly connected to the side surface of each first sliding block 407. The other end of the two L-shaped connecting rods 410 is connected to the mounting plate 403.
[0025] The self-cleaning assembly 4 is realized by adjusting the height of the mounting plate 403 as a whole, and the mounting plate 403 is located between the leveling part 3 and the traction control part 1 during the concrete leveling operation, and the height is higher than the vibration plate mechanism 304 and the scraper mechanism 305, so as to avoid affecting the normal leveling operation. After the leveling operation is completed, the mounting plate 403 is lowered to below the vibration plate mechanism 304 and the scraper mechanism 305 to be unfolded, so as to realize the cleaning work of the vibration plate mechanism 304 and the scraper mechanism 305.
[0026] Further, the second sliding groove 412 is formed on the upper surface of the mounting plate 403, and the second sliding block 411 is slidably connected in each second sliding groove 412. The two second sliding blocks 411 are fixedly connected to one end of the corresponding L-shaped connecting rod 410. The connecting plate 413 is fixedly installed on the upper surface of the mounting plate 403. The side surface of the connecting plate 413 is also provided with a threaded hole. The position adjusting screw 414 is threadedly connected in the threaded hole. One end of the position adjusting screw 414 is fixedly connected to one end of the output shaft of the position adjusting motor 415. The position adjusting motor 415 is fixedly connected between the two L-shaped connecting rods 410 through the motor bracket 416. The two sliding plates 420 are slidably connected to the side surface of the mounting plate 403.
[0027] The mounting plate 403 as a whole can realize independent horizontal sliding displacement relative to the two L-shaped connecting rods 410 through the cooperation of the second sliding groove 412 and the second sliding block 411. The position adjusting motor 415 also has a bidirectional rotation function. When the position adjusting motor 415 drives the position adjusting screw 414 to rotate, the mounting plate 403 as a whole can be horizontally displaced to change the relative position of the vibration plate mechanism 304 and the scraper mechanism 305, so as to drive the water spraying mechanism to be below the vibration plate mechanism 304 and the scraper mechanism 305, and to spray water to clean them.
[0028] Further, the water spraying mechanism comprises a water storage box 404. The water storage box 404 is fixedly installed on the top surface of the two L-shaped connecting rods 410. The water storage box 404 is connected in communication with the water tank 401 through the water supply hose 402. The two water delivery pumps 422 are fixedly installed on one side surface of the water storage box 404. The water suction end of each water delivery pump 422 extends into the water storage box 404. The water outlet end of each water delivery pump 422 is connected in communication with the liquid flow divider 423, and is connected in communication with one end of a plurality of water delivery hoses 424 through the corresponding liquid flow divider 423. The other end of each water delivery hose 424 is connected in communication with the corresponding high-pressure spray head 425. All high-pressure spray heads 425 located on the same side are fixedly installed on the upper surface of the corresponding sliding plate 420. The two sliding plates 420 are connected with the driving mechanism.
[0029] The water storage box 404 of the water spraying mechanism is fixed on the top surface of the two L-shaped connecting rods 410, and is in communication with the water channel system of the water tank 401 through the water supply hose 402 to ensure stable water supply. Two water supply pumps 422 are installed on one side surface of the water storage box 404, the water suction end of the water supply pump 422 is deep into the inside of the water storage box 404, the water outlet end is connected with the liquid flow divider 423, the liquid flow divider 423 is connected with the one end of a plurality of water supply hoses 424 respectively, the other end of the water supply hose 424 is connected with the high-pressure spray head 425, and the high-pressure spray head 425 on the same side is fixed on the upper surface of the corresponding sliding plate 420. The two sliding plates 420 are connected with the driving mechanism, and the driving mechanism can control the two sliding plates 420 to move synchronously and reversely. The water supply pump 422 pumps out the water in the water storage box 404 and uniformly distributes the water to each water supply hose 424 through the liquid flow divider 423, and then the high-pressure spray head 425 sprays the high-pressure water flow to clean the dirt such as concrete adhered to the laser concrete screed machine during the working process. The sliding plate 420 and the driving mechanism thereof can adjust the transverse position of the high-pressure spray head 425 to expand the cleaning range.
[0030] Further, a third sliding groove 417 is formed on one side surface of the mounting plate 403, a bidirectional threaded rod 418 is rotatably connected between the inner walls at the two ends of the third sliding groove 417, one end of each sliding plate 420 is slidably installed in the third sliding groove 417, and a threaded hole 421 is formed in the end surface of each sliding plate 420. The two sliding plates 420 are threadedly connected to the two ends of the bidirectional threaded rod 418 through the threaded holes 421 respectively, and one end of the bidirectional threaded rod 418 is fixedly connected to the output shaft of the driving motor 419 through a through hole formed in the inner wall of one end of the third sliding groove 417, and the driving motor 419 is fixedly installed on the other side surface of the mounting plate 403.
[0031] A third sliding groove 417 is formed on one side surface of the mounting plate 403, and a bidirectional threaded rod 418 is rotatably connected between the inner walls at the two ends of the third sliding groove 417. One end of the sliding plate 420 is embedded in the third sliding groove 417 and can slide therein, and a threaded hole 421 is formed in the end surface of the sliding plate 420. The two sliding plates 420 are threadedly connected to the two ends of the bidirectional threaded rod 418 through the threaded holes 421 respectively. One end of the bidirectional threaded rod 418 is fixedly connected to the output shaft of the driving motor 419 through a through hole formed in the inner wall of one end of the third sliding groove 417, and the driving motor 419 is fixed on the other side surface of the mounting plate 403. The driving motor 419 also has a bidirectional rotation function. When the output shaft of the driving motor 419 rotates, the bidirectional threaded rod 418 rotates, and due to the action of the threads, the two sliding plates 420 will move synchronously and oppositely or away from each other in the third sliding groove 417. The accuracy and convenience of transverse layout adjustment of the high-pressure spray head 425 are improved, so that the self-cleaning assembly can better cope with various complex cleaning tasks and improve the overall cleaning performance and adaptability of the equipment.
[0032] Further, the number of high-pressure nozzles 425 arranged on the upper surface of each sliding plate 420 is at least two, and the angles of the two high-pressure nozzles 425 are different.
[0033] At least two high-pressure nozzles 425 are mounted on the upper surface of each sliding plate 420, and the angles of the two high-pressure nozzles 425 are different. These high-pressure nozzles 425 constitute a complete water spraying system with the liquid distributor 423 and the water storage box 404 through the water delivery hose 424. Multiple high-pressure nozzles 425 with different angles can spray water from different directions to clean the bottom surface of the vibration plate mechanism 304 and the scraper mechanism 305, increasing the coverage angle of water spraying and the processing capacity of cleaning dead angles, and improving the cleaning effect. The self-cleaning assembly 4 improves the ability to remove dirt from the surface of the equipment, especially for equipment surfaces with complex structures, more recessed or protruding parts, which can achieve more comprehensive and thorough cleaning, ensuring the normal operation and service life of the equipment.
[0034] Working principle: the traction control part 1 drives the whole machine to move, the laser receiver 306 receives the signal of the external laser emitter to determine the working plane height, and the height of the lifting plate 303 of the leveling part 3 is controlled according to this through the telescopic device 302. The vibration motor in the vibration plate mechanism 304 generates high-frequency vibration to vibrate the concrete, and the scraper mechanism 305 scrapes the excess concrete. After completing the concrete leveling work, the water in the water tank 401 in the self-cleaning assembly 4 is sent to the water storage box 404 through the water supply hose 402, the water is pumped out by the water delivery pump 422, uniformly distributed to the water delivery hose 424 by the liquid distributor 423, and sprayed out by the high-pressure nozzles 425. The height adjustment motor 409 in the position adjustment mechanism can drive the height adjustment screw 408 to rotate, so that the first sliding block 407 drives the L-shaped connecting rod 410 and the mounting plate 403 to move up and down; the position adjustment motor 415 drives the position adjustment screw 414 to rotate, so that the mounting plate 403 moves horizontally; the driving motor 419 drives the bidirectional screw rod 418 to rotate, so that the sliding plate 420 moves relatively or away, adjusting the transverse position and distance of the high-pressure nozzles 425, and multiple high-pressure nozzles 425 with different angles spray water from multiple directions to clean the bottom surface of the vibration plate mechanism 304 and the scraper mechanism 305, reducing the influence of residual concrete on the leveling operation effect, and at the same time, the position adjustment mechanism can also realize the storage and expansion of the mounting plate 403, improving the convenience during use.
[0035] It should be noted that the specific model specifications of the traction control part 1, the telescopic adjustment part 2, the leveling part 3, the height adjustment motor 409, the position adjustment motor 415, the driving motor 419, and the water delivery pump 422 need to be determined according to the actual specifications of the device, and the specific selection calculation method adopts the existing technology in the art, so it will not be described in detail.
[0036] The power supply of the traction control part 1, the telescopic adjusting part 2, the leveling part 3, the height adjusting motor 409, the position adjusting motor 415, the driving motor 419 and the water delivery pump 422 and its principle are clear to those skilled in the art, and will not be described in detail here.
[0037] The above only describes the preferred embodiments of the present application and is not intended to limit the present application. For those skilled in the art, the present application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.
Claims
1. A laser screed for concrete, characterized in that, The utility model provides a traction control part and self -cleaning assembly, the telescopic adjusting part is fixedly installed on traction control part, the end of telescopic adjusting part is installed and is provided with the leveling part, the leveling part includes the mounting portion of installation in telescopic adjusting part end, the lifting plate is connected through telescopic device below the mounting portion, the bottom surface both sides of lifting plate are equipped with vibration plate mechanism and the scraping plate mechanism respectively, the both ends of mounting portion upper surface are fixedly connected with laser receiver through vertical rod, the self -cleaning assembly includes water tank, water tank is connected with water spraying mechanism through water supply hose intercommunication, water spraying mechanism sets up on mounting plate, mounting plate is connected with mounting portion through position adjusting mechanism.
2. The laser screed for concrete as claimed in claim 1, wherein: The position adjusting mechanism includes two connecting base columns, two connecting base columns are fixedly installed on both ends of one side surface of the mounting portion through connecting pieces, a first sliding groove is formed in the side surface of each connecting base column towards the mounting portion, a first sliding block is slidingly installed in each first sliding groove, a threaded hole is formed in the upper surface of each first sliding block, a height adjusting screw is threadedly connected in each threaded hole, and the both ends of each height adjusting screw are rotatably connected to the inner walls at the top and bottom of the corresponding first sliding groove, the top end of each height adjusting screw is fixedly connected to one end of the output shaft of a corresponding height adjusting motor through a through hole, and two height adjusting motors are fixedly installed on the top surface of the corresponding connecting base column, one end of each first sliding block is fixedly connected to one end of an L-shaped connecting rod on the side surface, and the other ends of the two L-shaped connecting rods are connected to the mounting plate.
3. The laser screed for concrete as claimed in claim 2, wherein: Second sliding grooves are formed in both sides of the upper surface of the mounting plate, a second sliding block is slidingly connected in each second sliding groove, and the two second sliding blocks are fixedly connected to one end of the corresponding L-shaped connecting rod, a connecting plate is also fixedly installed on the upper surface of the mounting plate, a threaded hole is formed in the side surface of the connecting plate, a position adjusting screw is threadedly connected in the threaded hole, one end of the position adjusting screw is fixedly connected to one end of the output shaft of a position adjusting motor, the position adjusting motor is fixedly connected between the two L-shaped connecting rods through a motor bracket, and two sliding plates are also slidingly connected to the side surface of the mounting plate.
4. The laser screed for concrete as claimed in claim 3, wherein: The water spraying mechanism includes a water storage box, the water storage box is fixedly installed on the top surface of the two L-shaped connecting rods, the water storage box is connected in intercommunication with the water tank through a water supply hose, two water delivery pumps are also fixedly installed on the side surface of the water storage box, the water suction end of each water delivery pump extends into the water storage box, the water outlet end of each water delivery pump is connected in intercommunication with a liquid flow divider, a plurality of water supply hoses are connected to one end of the liquid flow divider, the other end of each water supply hose is connected in intercommunication with a corresponding high-pressure nozzle, all the high-pressure nozzles on the same side are fixedly installed on the upper surface of the corresponding sliding plate, and the two sliding plates are connected with a driving mechanism.
5. The laser concrete screed of claim 4, wherein: The third sliding groove is arranged on one side surface of the mounting plate, and a bidirectional threaded rod is rotationally connected between inner walls at two ends of the third sliding groove.
6. The laser concrete screed of claim 4, wherein: The number of high-pressure nozzles arranged on the upper surface of each sliding plate is at least two, and the angles of the two high-pressure nozzles are different.