Wall surface polishing device for building construction

Abstract

The invention belongs to the technical field of wall surface polishing, and particularly relates to a wall surface polishing device for building construction, which comprises a base, and an electric sliding rail is fixedly arranged at the upper end of the base. The wall surface polishing device further comprises a rotary lifting mechanism, a rapid polishing mechanism, a wall surface roughness detection mechanism, a wall surface hardness detection mechanism, a polishing assembly storage machine, a plurality of sets of pushing auxiliary material taking mechanisms and a PLC. The wall surface roughness can be rapidly detected before the wall surface is polished, a worker is automatically assisted in selecting a matched polishing disc according to a detection result, the hardness of the wall surface can be rapidly monitored before the wall surface is polished, the subsequent polishing power and polishing pressure are automatically regulated and controlled based on the hardness value of the wall surface, and the polishing efficiency is improved. According to the wall surface polishing device, the whole polishing working duration can be automatically regulated and controlled according to the wall surface roughness, the wall surface polishing quality and efficiency are effectively improved, the automation degree is high, and the regulation and control accuracy is higher.

Description

Technical Field

[0001] The invention belongs to the technical field of wall grinding, and in particular relates to a wall grinding device for building construction. Background Art

[0002] In construction, after the puttying stage, minor defects such as uneven local scraping and joints at the junctions often appear on the wall. These problems must be repaired with the help of a sanding process. Sanding the wall can make the putty surface smoother and more even, and the thickness tends to be uniform, thereby enhancing the adsorption of latex paint and optimizing the final coating effect. At the same time, it avoids problems such as local color difference of the paint caused by differences in the surface structure. Wall sanding machine, as a new type of tool, has replaced the traditional method of manually sanding the wall with sandpaper. It can not only make the wall flat, but also achieve dust-free operation, effectively protecting the physical and mental health of workers.

[0003] In order to ensure the grinding effect and meet the different wall grinding needs, the current wall grinding device often needs to replace the grinding head as needed during the operation. For example, when facing a rough wall, it is necessary to replace the coarse sandpaper or grindstone grinding head; for a smooth wall, it is necessary to use fine sandpaper or polishing head, etc., and currently this work is only roughly judged and selected by humans, resulting in the roughness of the grinding surface not being well adapted to the roughness of the wall. Using a grinding component with a larger roughness on a wall with a small roughness will lead to excessive grinding of the wall, thereby causing damage to the wall, while using a grinding component with a relatively smaller roughness on a wall with a large roughness will result in a slow grinding rate, affecting the grinding efficiency. Summary of the invention

[0004] The purpose of the present invention is to provide a wall grinding device for building construction in view of the above problems.

[0005] To achieve the above object, the present invention adopts the following technical scheme: A wall grinding device for construction, comprising a base, an electric slide rail is fixedly installed on the upper end of the base, and further comprising: A rotary lifting mechanism is fixedly mounted on the upper end of the slider in the electric slide rail; A quick grinding mechanism, fixedly mounted on the moving end of the rotating lifting mechanism; A wall surface roughness detection mechanism is fixedly mounted on the rapid polishing mechanism and is used to detect the roughness of the wall surface; A wall surface hardness detection mechanism, fixedly mounted on the wall surface roughness detection mechanism, for detecting the hardness of the wall surface; A grinding assembly storage mechanism is fixedly mounted on the upper end of the base and arranged on one side of the electric slide rail; Multiple groups of push-assisted material-taking mechanisms are arranged between the base and the grinding component storage mechanism; The PLC controller is fixedly mounted on the outer wall of the rotary lifting mechanism and is electrically connected to the rotary lifting mechanism, the rapid grinding mechanism, the wall roughness detection mechanism, the wall hardness detection mechanism, the grinding component storage mechanism and the jacking auxiliary material taking mechanism.

[0006] In the above-mentioned wall grinding device for construction, the rotating lifting mechanism includes a rotating motor, the upper output end of the rotating motor is fixedly connected to a rotating plate, the upper end of the rotating plate is fixedly provided with a support frame, the inner wall of the support frame is symmetrically rotatably connected with two lifting screws, the upper end of the support frame is fixedly provided with a bidirectional motor drive assembly for driving the two lifting screws to rotate, the rod wall of the lifting screw is threadedly sleeved with a lifting screw barrel, the outer wall of the lifting screw barrel is fixedly connected to a limiting slider, and the inner wall of the support frame is provided with a limiting slide groove that matches and slides with the limiting slider.

[0007] In the above-mentioned wall grinding device for construction, the rapid grinding mechanism includes a mounting shell fixedly installed between the two lifting screw barrels, one end of the mounting shell is fixedly inserted with an electric push rod, the movable end of the electric push rod is fixedly connected to a grinding motor, the output end of the grinding motor is fixedly connected to a mounting plate, a grinding plate is installed on the side of the mounting plate away from the grinding motor, and a first pressure sensing plate is also fixedly installed between the grinding motor and the electric push rod.

[0008] In the above-mentioned wall grinding device for construction, the wall roughness detection mechanism includes two electric telescopic rods symmetrically fixedly inserted into the end of the mounting shell away from the grinding motor, the movable ends of the two electric telescopic rods are fixedly connected to the same fixed plate, the side wall of the fixed plate is fixedly installed with a detection shell, the inner wall of the detection shell is fixedly connected to a plurality of limit sliding rods arranged side by side, the plurality of limit sliding rods are externally slidably sleeved with the same sliding seat, the sliding seat and the detection shell are fixedly connected to a plurality of detection springs sleeved outside the limit sliding rod on the opposite side, one end of the sliding seat extends through the detection shell and is fixedly connected with a friction block, the end of the detection shell is also fixedly inserted with a laser rangefinder arranged opposite to the sliding seat, and a second pressure sensing plate is fixedly installed between the fixed plate and the detection shell.

[0009] In the above-mentioned wall grinding device for construction, the wall hardness detection mechanism includes a plurality of guide slide bars symmetrically and movably inserted on the fixed plate, one end of the plurality of guide slide bars is fixedly connected to the same pushing plate, an ultrasonic detection probe is fixedly installed on the side of the pushing plate away from the guide slide bar, a plurality of retaining springs sleeved outside the guide slide bar are fixedly installed on the opposite side of the pushing plate and the fixed plate, a pushing permanent magnet plate is fixedly installed on the side wall of the pushing plate, and a pushing electromagnetic plate arranged opposite to the pushing permanent magnet plate is fixedly installed on the side wall of the fixed plate.

[0010] In the above-mentioned wall grinding device for construction, the grinding component storage mechanism includes a storage seat fixedly mounted on the upper end of the base, a plurality of storage slots are opened on the upper end of the storage seat, and a plurality of warning lights corresponding to the positions of the storage slots are fixedly mounted on the outer wall of the storage seat.

[0011] In the above-mentioned wall grinding device for construction, the pushing auxiliary material picking mechanism includes a plurality of positioning slide bars symmetrically fixedly connected between the base and the storage seat, and the plurality of positioning slide bars are slidably sleeved with the same pushing plate. The upper end of the pushing plate is fixedly connected with a plurality of pushing rods, and the upper ends of the pushing rods pass through the bottom end of the storage seat and extend into the storage groove. The upper end of the pushing plate and the lower end of the storage seat are fixedly connected with a plurality of return springs sleeved on the outside of the positioning slide bars, and the lower end of the pushing plate is fixedly provided with a pushing permanent magnet plate, and the upper end of the base is fixedly provided with a pushing electromagnetic plate arranged opposite to the pushing permanent magnet plate.

[0012] In the above-mentioned wall grinding device for construction, a plurality of pin holes are symmetrically provided between the rotating motor and the rotating plate, and positioning pins are inserted into the pin holes.

[0013] Compared with the prior art, the present invention has the following beneficial effects: 1. Through the set wall roughness detection mechanism, grinding component storage mechanism, and push-assisted material collection mechanism, the wall roughness can be quickly detected before wall grinding, and according to the detection results, it automatically assists the staff to select the appropriate grinding disc. Specifically, when the wall roughness is larger, the equipment will recommend the use of a grinding disc with a larger roughness; if the wall roughness is smaller, it will recommend the use of a grinding disc with a smaller roughness. In this way, more precise grinding operations can be achieved, effectively ensuring the quality and efficiency of grinding.

[0014] 2. Through the set wall hardness detection mechanism and rapid grinding mechanism, the hardness of the wall can be quickly monitored before grinding, and the subsequent grinding power and grinding pressure can be automatically adjusted based on the wall hardness value, so that the greater the wall hardness, the greater the grinding power and grinding pressure. The higher the wall hardness, the greater the pressure is required to make the grinding tool fully contact with the wall and effectively remove the uneven parts or perform surface treatment; if the wall hardness is low, the pressure should be reduced to avoid excessive grinding or damage to the wall.

[0015] 3. Through the set wall roughness detection mechanism, rotating lifting mechanism, and electric slide rail, the entire grinding time can be automatically adjusted according to the size of the wall roughness. When the wall roughness is larger, the area and workload to be processed are larger, and repeated operations are required during the grinding process to ensure the flatness and smoothness of the wall. Therefore, the equipment will automatically extend the grinding time to allow each grinding position to stay longer. On the contrary, if the wall roughness is smaller, the grinding time will be shortened accordingly. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a front view structural schematic diagram of the present invention; Figure 2 yes Figure 1 Middle section view; Figure 3 It is a cross-sectional structural schematic diagram of the rotary lifting mechanism of the present invention; Figure 4 It is a three-dimensional structural schematic diagram of the rapid grinding mechanism of the present invention; Figure 5 It is a schematic cross-sectional structure diagram of the wall surface roughness detection mechanism of the present invention; Figure 6 It is a structural schematic diagram of the wall hardness detection mechanism of the present invention; Figure 7 It is a structural schematic diagram of the grinding component storage mechanism of the present invention; Figure 8 It is a structural schematic diagram of the push-assisted material-retrieving mechanism of the present invention.

[0017] In the figure: 1 base, 2 rotating lifting mechanism, 21 rotating motor, 22 rotating plate, 23 supporting frame, 24 lifting screw, 25 bidirectional motor drive assembly, 26 lifting screw barrel, 3 fast grinding mechanism, 31 mounting shell, 32 electric push rod, 33 grinding motor, 34 mounting plate, 35 grinding plate, 36 first pressure sensing plate, 4 wall roughness detection mechanism, 41 electric telescopic rod, 42 fixing plate, 43 detection shell, 44 limit slide rod, 45 sliding seat, 46 detection spring, 47 friction block, 4 8 laser rangefinder, 49 second pressure sensing plate, 5 wall hardness detection mechanism, 51 guide slide bar, 52 push plate, 53 ultrasonic detection probe, 54 holding spring, 55 push permanent magnet plate, 56 push electromagnetic plate, 6 grinding component storage mechanism, 61 storage seat, 62 storage slot, 63 prompt light, 7 push auxiliary material taking mechanism, 71 positioning slide bar, 72 push plate, 73 push rod, 74 return spring, 75 push permanent magnet plate, 76 push electromagnetic plate, 8 electric slide rail, 9 PLC controller. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0019] like Figure 1-Figure 8 As shown, a wall grinding device for construction includes a base 1, an electric slide rail 8 is fixedly installed on the upper end of the base 1, and also includes: The rotary lifting mechanism 2 is fixedly mounted on the upper end of the slider in the electric slide rail 8. The rotary lifting mechanism 2 includes a rotary motor 21. The upper output end of the rotary motor 21 is fixedly connected to a rotary plate 22. A support frame 23 is fixedly mounted on the upper end of the rotary plate 22. Two lifting screws 24 are symmetrically rotatably connected to the inner wall of the support frame 23. A bidirectional motor drive assembly 25 for driving the two lifting screws 24 to rotate is fixedly mounted on the upper end of the support frame 23. A lifting screw barrel 26 is threadedly sleeved on the rod wall of the lifting screw 24. The outer wall of the lifting screw barrel 26 is fixedly connected to a limiting slider. A limiting slide groove matching and slidingly connected with the limiting slider is opened on the inner wall of the support frame 23. A plurality of pin holes are symmetrically opened between the rotary motor 21 and the rotary plate 22, and positioning pins are inserted in the pin holes.

[0020] The quick grinding mechanism 3 is fixedly mounted on the moving end of the rotating lifting mechanism 2. The quick grinding mechanism 3 includes a mounting shell 31 fixedly mounted between the two lifting screw barrels 26. An electric push rod 32 is fixedly inserted at one end of the mounting shell 31. The moving end of the electric push rod 32 is fixedly connected to a grinding motor 33. A mounting plate 34 is fixedly connected to the output end of the grinding motor 33. A grinding plate 35 is mounted on the side of the mounting plate 34 away from the grinding motor 33. A first pressure sensing plate 36 is also fixedly mounted between the grinding motor 33 and the electric push rod 32.

[0021] The wall roughness detection mechanism 4 is fixedly mounted on the fast grinding mechanism 3 and is used to detect the roughness of the wall. The wall roughness detection mechanism 4 includes two electric telescopic rods 41 symmetrically fixedly inserted in the end of the mounting shell 31 away from the grinding motor 33. The movable ends of the two electric telescopic rods 41 are fixedly connected with the same fixed plate 42. The side wall of the fixed plate 42 is fixedly mounted with a detection shell 43. The inner wall of the detection shell 43 is fixedly connected with a plurality of limit slide bars 44 arranged side by side. The plurality of limit slide bars 44 are slidably sleeved with the same sliding seat 45. The sliding seat 45 and the detection shell 43 have a plurality of detection springs 46 sleeved on the outside of the limit slide bars 44 fixedly connected on the opposite side. One end of the sliding seat 45 extends through the detection shell 43 and is fixedly connected with a friction block 47. The end of the detection shell 43 is also fixedly sleeved with a laser rangefinder 48 arranged opposite to the sliding seat 45. A second pressure sensing plate 49 is fixedly mounted between the fixed plate 42 and the detection shell 43.

[0022] The wall hardness detection mechanism 5 is fixedly mounted on the wall roughness detection mechanism 4 and is used to detect the hardness of the wall. The wall hardness detection mechanism 5 includes a plurality of guide slide bars 51 symmetrically and movably inserted into the fixed plate 42. One end of the plurality of guide slide bars 51 is fixedly connected to the same pushing plate 52. An ultrasonic detection probe 53 is fixedly mounted on the side of the pushing plate 52 away from the guide slide bar 51. A plurality of retaining springs 54 with round heads and sleeved outside the guide slide bar 51 are fixedly mounted on the opposite side of the pushing plate 52 and the fixed plate 42. A pushing permanent magnet plate 55 is fixedly mounted on the side wall of the pushing plate 52. A pushing electromagnetic plate 56 which is arranged opposite to the pushing permanent magnet plate 55 is fixedly mounted on the side wall of the fixed plate 42.

[0023] The grinding component storage mechanism 6 is fixedly mounted on the upper end of the base 1 and is arranged on one side of the electric slide rail 8. The grinding component storage mechanism 6 includes a storage seat 61 fixedly mounted on the upper end of the base 1. A plurality of storage slots 62 are provided on the upper end of the storage seat 61. A plurality of warning lights 63 corresponding to the positions of the storage slots 62 are fixedly mounted on the outer wall of the storage seat 61.

[0024] A plurality of groups of push-assist material-grabbing mechanisms 7 are arranged between the base 1 and the grinding component storage mechanism 6. The push-assist material-grabbing mechanisms 7 include a plurality of positioning slide bars 71 symmetrically fixedly connected between the base 1 and the storage seat 61. The plurality of positioning slide bars 71 are slidably sleeved with the same push plate 72. The upper end of the push plate 72 is fixedly connected with a plurality of push rods 73. The upper ends of the push rods 73 pass through the bottom end of the storage seat 61 and extend into the storage groove 62. The upper end of the push plate 72 and the lower end of the storage seat 61 are fixedly connected with a plurality of return springs 74 sleeved on the outside of the positioning slide bars 71. A push permanent magnet plate 75 is fixedly installed at the lower end of the push plate 72. A push electromagnetic plate 76 arranged opposite to the push permanent magnet plate 75 is fixedly installed at the upper end of the base 1.

[0025] The PLC controller 9 is fixedly mounted on the outer wall of the rotary lifting mechanism 2, and is electrically connected to the rotary lifting mechanism 2, the rapid grinding mechanism 3, the wall roughness detection mechanism 4, the wall hardness detection mechanism 5, the grinding component storage mechanism 6 and the jacking auxiliary material taking mechanism 7 respectively.

[0026] The operating principle of the present invention is now described as follows: the base 1 and the electric slide rail 8 are moved to one side of the wall to be polished, and the PLC controller 9 first controls the rotating motor 21 to drive the rotating plate 22 and the support frame 23 to rotate 180 degrees, so that the wall roughness detection mechanism 4 and the wall hardness detection mechanism 5 are set toward one side of the wall. The PLC controller 9 first controls the electric telescopic rod 41 to push the detection shell 43 toward the wall until the friction block 47 contacts the wall. As the electric telescopic rod 41 continues to advance, the extrusion pressure monitored by the second pressure sensing plate 49 reaches the threshold. At this time, the PLC controller 9 receives the signal fed back by the second pressure sensing plate 49 to control the electric telescopic rod 41 to stop moving, so that a fixed pressure value is maintained between the friction block 47 and the wall. The PLC controller 9 then controls the bidirectional motor drive assembly 25 to move, and the bidirectional motor drive assembly 25 drives the two lifting screws 24 to rotate. The threaded sleeve connection with the lifting screw barrel 26 enables the lifting screw barrel 26 to drive the wall roughness detection mechanism 4 to slide on the wall surface. The friction between the friction block 47 and the wall surface enables the friction block 47 to cooperate with the sliding seat 45 to slide relatively along the limit slide rod 44 to overcome the elastic force of the detection spring 46. Specifically, the greater the roughness of the wall surface, the greater the friction resistance of the friction block 47, thereby making the sliding seat 45 slide along the limit slide rod 44 to overcome the elastic force of the detection spring 46. The laser rangefinder 48 monitors the distance from the sliding seat 45 in real time, and feeds back the shortest monitoring distance signal to the PLC controller 9. After the wall roughness detection mechanism 4 completes the friction detection of multiple positions on the wall surface through the cooperation of the electric slide rail 8 and the bidirectional motor drive assembly 25, the friction values ​​with larger differences are removed by the analysis and processing module in the PLC controller 9, and then the average value of multiple friction values ​​is taken to determine the roughness of the wall surface. When the wall roughness detection is completed, the PLC controller 9 controls the power supply device to supply power to the squeezing and pushing electromagnetic plate 56. The squeezing and pushing electromagnetic plate 56 is energized to generate the same magnetism as the squeezing and pushing permanent magnet plate 55, thereby driving the squeezing and pushing plate 52 and the ultrasonic detection probe 53 to move toward the wall, so that the ultrasonic detection probe 53 is in contact with the wall. The PLC controller 9 controls the ultrasonic detection probe 53 to emit ultrasonic waves for detection. The material hardness is measured according to the different propagation speeds of ultrasonic waves in materials of different hardness. When the ultrasonic wave emitted by the ultrasonic probe is transmitted to the measured wall material, its propagation speed is related to factors such as the elastic modulus and density of the material, and the hardness of the material has a certain relationship with the elastic modulus, etc. By measuring the ultrasonic wave in the material The propagation time and speed in the material are calculated and converted to obtain the hardness value of the wall material. Specifically, the wall material with high hardness has stronger binding force between atoms and molecules, more compact and regular atomic arrangement, and more compact structure. When ultrasonic waves propagate in such materials, the energy of ultrasonic waves can be transmitted more efficiently and the propagation speed is faster because the distance between atoms is small and the binding is tight. On the contrary, for wall materials with low hardness, their internal structure is relatively loose, with more pores, defects or weaker chemical bonds, which will cause large energy loss of ultrasonic waves during propagation and slow down the propagation speed. Then, the hardness value of the wall is determined based on the propagation speed of ultrasonic waves. The faster the propagation speed, the greater the hardness of the wall. First, after the detection work based on the roughness of the wall surface, the PLC controller 9 receives the shortest distance signal fed back by the laser rangefinder 48. The shorter the detection distance, the greater the roughness of the wall surface. The PLC controller 9 controls the prompt light 63 on the rear side to be powered on, indicating that a grinding disc 35 with a greater roughness is needed to be used. At this time, the PLC controller 9 controls the power supply equipment to supply power to the push electromagnetic plate 76 at the position where the current prompt light 63 is on. The push electromagnetic plate 76 is powered on to generate the same magnetism as the push permanent magnet plate 75, so that the push plate 72 pushes the push rod 73 to move upward, and the grinding disc 35 corresponding to the current position is pushed out of the storage slot 62 in the storage seat 61, so that the staff can quickly take the corresponding appropriate grinding disc 35, and then the staff installs the grinding disc 35 on the installation disc 34 connected to the output end of the grinding motor 33, and waits for subsequent grinding work; The PLC controller 9 automatically adjusts the working power of the grinding motor 33 and the set threshold of the first pressure sensing plate 36 based on the size of the wall hardness value detected. The greater the wall hardness, the greater the working power of the grinding motor 33 is adjusted, and the greater the threshold set for the first pressure sensing plate 36, the PLC controller 9 controls the rotating motor 21 to move again, so that the fast grinding mechanism 3 rotates to the side close to the wall, and the PLC controller 9 controls the electric push rod 32 to push the grinding motor 33 to move until the grinding disc 35 contacts the wall, and after the first pressure sensing plate 36 reaches the detection threshold, the PLC controller 9 controls the electric push rod 32 to stop moving, confirms the grinding pressure, and the grinding motor 33 drives the mounting plate 34 and the grinding disc 35 to rotate quickly to complete the grinding of the wall. Through the work of the electric slide rail 8 and the bidirectional motor drive assembly 25, the comprehensive grinding of the wall is completed, and the working power of the electric slide rail 8 and the bidirectional motor drive assembly 25 is The rate is regulated based on the size of the wall roughness detection value. The greater the wall roughness, the smaller the working power of the electric slide rail 8 and the bidirectional motor drive assembly 25, so that the grinding time can be extended. When the wall roughness is large, since the area and workload to be processed are larger, repeated operations are required during the grinding process to ensure the flatness and smoothness of the wall. Therefore, the equipment will automatically extend the grinding time to make each grinding position stay longer. On the contrary, if the wall roughness is small, the grinding working time will be shortened accordingly. It is additionally noted that the grinding power and grinding pressure are automatically regulated based on the hardness of the wall to ensure the stability of the grinding efficiency. The harder the wall, the greater the grinding power and the greater the grinding pressure under the same roughness to ensure the same grinding efficiency. The auxiliary selection of the grinding disc 35 based on the wall roughness is to ensure that the grinding work of walls with different roughness can be further compensated, thereby ensuring the grinding quality and efficiency.

[0027] 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, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A wall grinding device for construction, comprising a base (1), an electric slide rail (8) being fixedly mounted on the upper end of the base (1), characterized in that: Also includes: A rotary lifting mechanism (2) fixedly mounted on the upper end of a slide block in the electric slide rail (8); A rapid grinding mechanism (3) is fixedly mounted on the moving end of the rotating lifting mechanism (2); A wall surface roughness detection mechanism (4) is fixedly mounted on the rapid polishing mechanism (3) and is used to detect the roughness of the wall surface; A wall surface hardness detection mechanism (5) is fixedly mounted on the wall surface roughness detection mechanism (4) and is used to detect the hardness of the wall surface; A grinding component storage mechanism (6) is fixedly mounted on the upper end of the base (1) and is arranged on one side of the electric slide rail (8); A plurality of groups of push-assist material-removing mechanisms (7) are arranged between the base (1) and the grinding component storage mechanism (6); The PLC controller (9) is fixedly mounted on the outer wall of the rotary lifting mechanism (2), and is electrically connected to the rotary lifting mechanism (2), the rapid grinding mechanism (3), the wall surface roughness detection mechanism (4), the wall surface hardness detection mechanism (5), the grinding component storage mechanism (6), and the push-assisted material taking mechanism (7).

2. A wall grinding device for construction according to claim 1, characterized in that: The rotary lifting mechanism (2) comprises a rotary motor (21), the upper output end of the rotary motor (21) is fixedly connected to a rotary plate (22), the upper end of the rotary plate (22) is fixedly provided with a support frame (23), the inner wall of the support frame (23) is symmetrically rotatably connected to two lifting screw rods (24), the upper end of the support frame (23) is fixedly provided with a bidirectional motor drive assembly (25) for driving the two lifting screw rods (24) to rotate, the rod wall of the lifting screw rod (24) is threadedly sleeved with a lifting screw barrel (26), the outer wall of the lifting screw barrel (26) is fixedly connected to a limit slider, and the inner wall of the support frame (23) is provided with a limit slide groove that matches and slides with the limit slider.

3. A wall grinding device for construction according to claim 2, characterized in that: The rapid grinding mechanism (3) comprises a mounting shell (31) fixedly mounted between the two lifting screw barrels (26); an electric push rod (32) is fixedly inserted into one end of the mounting shell (31); a moving end of the electric push rod (32) is fixedly connected to a grinding motor (33); an output end of the grinding motor (33) is fixedly connected to a mounting plate (34); a grinding plate (35) is mounted on a side of the mounting plate (34) away from the grinding motor (33); and a first pressure sensing plate (36) is fixedly mounted between the grinding motor (33) and the electric push rod (32).

4. A wall grinding device for construction according to claim 3, characterized in that: The wall surface roughness detection mechanism (4) comprises two electric telescopic rods (41) symmetrically fixedly inserted into the end of the mounting shell (31) away from the grinding motor (33), the movable ends of the two electric telescopic rods (41) are fixedly connected to the same fixed plate (42), the side wall of the fixed plate (42) is fixedly provided with a detection shell (43), the inner wall of the detection shell (43) is fixedly connected to a plurality of limit sliding rods (44) arranged side by side, and the outer sliding sleeves of the plurality of limit sliding rods (44) are slidably connected to the same sliding rod. A seat (45) is provided, and a plurality of detection springs (46) sleeved outside a limit slide rod (44) are fixedly connected to the sliding seat (45) and the detection shell (43) on one side opposite to the sliding seat (45). One end of the sliding seat (45) extends through the detection shell (43) and is fixedly connected to a friction block (47). A laser rangefinder (48) arranged opposite to the sliding seat (45) is also fixedly inserted and sleeved at the end of the detection shell (43). A second pressure sensing plate (49) is fixedly installed between the fixing plate (42) and the detection shell (43).

5. A wall grinding device for construction according to claim 4, characterized in that: The wall surface hardness detection mechanism (5) comprises a plurality of guide slide bars (51) symmetrically and movably inserted on the fixed plate (42), one end of the plurality of guide slide bars (51) being fixedly connected to the same pushing plate (52), an ultrasonic detection probe (53) being fixedly mounted on a side of the pushing plate (52) away from the guide slide bars (51), a plurality of retaining springs (54) being fixedly mounted on a side opposite to the pushing plate (52) and the fixed plate (42) and being sleeved on the outside of the guide slide bars (51), a pushing permanent magnetic plate (55) being fixedly mounted on a side wall of the pushing plate (52), and a pushing electromagnetic plate (56) being fixedly mounted on a side wall of the fixed plate (42) and being arranged opposite to the pushing permanent magnetic plate (55).

6. A wall grinding device for construction according to claim 1, characterized in that: The grinding assembly storage mechanism (6) comprises a storage seat (61) fixedly mounted on the upper end of the base (1); a plurality of storage slots (62) are provided on the upper end of the storage seat (61); and a plurality of warning lights (63) corresponding to the positions of the storage slots (62) are fixedly mounted on the outer wall of the storage seat (61).

7. A wall grinding device for construction according to claim 6, characterized in that: The push-assisted material-removing mechanism (7) comprises a plurality of positioning slide bars (71) symmetrically fixedly connected between the base (1) and the storage seat (61); the plurality of positioning slide bars (71) are slidably sleeved with a same push plate (72); the upper end of the push plate (72) is fixedly connected with a plurality of push rods (73); the upper ends of the push rods (73) penetrate the bottom end of the storage seat (61) and extend into the storage groove (62); the upper end of the push plate (72) and the lower end of the storage seat (61) are fixedly connected with a plurality of return springs (74) sleeved on the outside of the positioning slide bars (71); the lower end of the push plate (72) is fixedly provided with a push permanent magnet plate (75); and the upper end of the base (1) is fixedly provided with a push electromagnetic plate (76) arranged opposite to the push permanent magnet plate (75).

8. A wall grinding device for construction according to claim 2, characterized in that: A plurality of latch holes are symmetrically provided between the rotating motor (21) and the rotating plate (22), and positioning latches are inserted into the latch holes.

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