Building construction site dust removal cleaning device

Abstract

The application relates to the technical field of building floor surface mortar polishing, in particular to a building construction ground dust removal and cleaning device, which comprises a vehicle frame, a lifting assembly arranged on the vehicle frame, a supporting plate connected to the lifting assembly, a rough polishing assembly arranged on the supporting plate and comprising a rough polishing disc, the rough polishing assembly being capable of performing a rough polishing action on a mortar floor through the rough polishing disc, a follow-up pressure increasing mechanism arranged on the rough polishing assembly, the follow-up pressure increasing mechanism being capable of adjusting the polishing pressure of the rough polishing disc through the rough polishing assembly when the rough polishing disc moves, and a fine polishing assembly arranged on the supporting plate and used for fine polishing treatment of the mortar floor. The application can automatically adjust the force of the rough polishing disc on the mortar when the rough polishing disc acts on the mortar of different thicknesses on the floor through the follow-up pressure increasing mechanism, so that the mortar of different thicknesses can be adapted, and the mortar can be ensured to be completely cleaned.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of building floor surface mortar polishing, in particular to a building construction ground dust removal and cleaning device. BACKGROUND

[0002] In the process of building construction, the wall surface needs to be plastered. During plastering, the mortar needs to be evenly adhered to the wall surface, and the mortar needs to be firmly bonded with the base layer, the surface needs to be flat, and there should be no cracks.

[0003] During plastering, part of the mortar will inevitably be splashed onto the floor surface, and after a period of drying, hard mortar will adhere to the surface of the floor surface. In order to ensure the flatness of the floor surface mortar plate, the mortar needs to be polished and cleaned.

[0004] To this end, Chinese patent CN114670071B proposes a building construction ground dust removal and cleaning device, which includes a cleaning device including a housing, a pressure bearing, a connecting rod and an adjusting bearing. The beneficial effect is that the connecting rod driven by the telescopic rod is used to achieve the extrusion effect of the sleeve and the pressure bearing. During the pressing process of the sleeve, the high-strength arc-shaped cutting piece is adjusted according to the different mortar adhesion strength of the site ground plate, and the pressure intensity of the high-strength arc-shaped cutting piece rotating cutting is controlled, so that the toughness adjustment of the high-strength arc-shaped cutting piece rotating cleaning is ensured. During the pressing process of the adjusting bearing, the pressure rod is pressed on the polishing disc and the rubber pad ring is extruded, so that the polishing disc is lowered, thereby adapting to the cleaning of mortar of different thicknesses.

[0005] However, in actual use, the adjustment of the cleaning strength of the cutting piece and the polishing disc needs to be adjusted after measuring the thickness of the mortar on the floor surface, which leads to the problem that the cutting piece and the polishing disc cannot quickly respond when the thickness of the mortar on the floor surface changes, and cannot automatically switch to the required processing strength, thereby causing some residual mortar on the floor surface. SUMMARY

[0006] The purpose of the present application is to provide a building construction ground dust removal and cleaning device to solve the problems raised in the background art.

[0007] To achieve the above-mentioned purpose, the present application provides the following technical solutions:

[0008] The building construction ground dust removal and cleaning device comprises:

[0009] A vehicle frame and a lifting assembly arranged on the vehicle frame, the lifting assembly being connected with a support plate;

[0010] Further comprising:

[0011] A rough grinding assembly is arranged on the support plate and includes a rough grinding disc, and the rough grinding assembly is capable of performing a rough grinding operation on the mortar floor through the rough grinding disc;

[0012] A follow-up pressure increasing mechanism is arranged on the rough grinding assembly, and the follow-up pressure increasing mechanism is capable of adjusting the grinding pressure on the rough grinding disc through the rough grinding assembly when the rough grinding disc moves.

[0013] A fine grinding assembly is arranged on the support plate and is used for performing a fine grinding operation on the mortar floor.

[0014] As a further scheme of the present application, the rough grinding assembly includes a first motor fixed on the support plate, a rotating sleeve connected with an output shaft of the first motor is rotatably arranged on the support plate, a rotating rod axially slides in the rotating sleeve, and the rotating rod is fixedly connected with the rough grinding disc.

[0015] As a further scheme of the present application, the follow-up pressure increasing mechanism includes a fixed ring fixed on the rotating sleeve, a first movable ring axially slides on the rotating sleeve and abuts against the fixed ring, a spring is sleeved on the rotating sleeve and the rotating rod, and two ends of the spring respectively abut against the first movable ring and the rough grinding disc.

[0016] Further, a sliding assembly and a guide assembly are arranged on the rotating sleeve and are used for driving the first movable ring to axially slide along the rotating sleeve.

[0017] As a further scheme of the present application, the sliding assembly includes a through slot formed in a circumferential outer wall of the rotating sleeve, a limiting ring and a second movable ring axially slide on the rotating sleeve, and the limiting ring penetrates through the through slot and is fixedly connected with the rotating rod.

[0018] As a further scheme of the present application, the guide assembly includes a support column fixed on the circumferential outer wall of the rotating sleeve, a movable sleeve axially slides on the support column, a first connecting rod and a second connecting rod are hinged on the movable sleeve, the first connecting rod is hinged with the first movable ring, and the second connecting rod is hinged with the second movable ring.

[0019] As a further scheme of the present application, the fine grinding assembly includes a second motor fixed on the support plate, a transmission rod connected with an output shaft of the second motor is rotatably arranged on the support plate, and a fine grinding disc is fixed on an end of the transmission rod.

[0020] As a further scheme of the present application, the lifting assembly includes a guide column fixed on the frame, the guide column is slidably connected with the support plate, and a cylinder fixedly connected with the support plate is fixed on the frame.

[0021] As a further scheme of the present application: the support plate is fixed with a fixed rod, the end of the fixed rod is fixed with a sliding connection with the transmission rod and the rotating sleeve, and a guide plate is used to support the rotating sleeve and the transmission rod.

[0022] As a further scheme of the present application: the support plate is fixed with a dust collector, the dust collector is connected with an air suction pipe, and the air suction pipe is fixed with a dust suction head.

[0023] Compared with the prior art, the present application has the following advantages: the present application can automatically adjust the polishing intensity of the rough polishing disc through the follow-up supercharging mechanism to ensure that the rough polishing disc can provide sufficient cleaning force when the thickness of the mortar on the floor changes. Specifically, when the vehicle frame travels in the desired polishing and cleaning direction, the rough polishing disc is driven to rotate by the rough polishing assembly to polish and break the mortar on the floor surface with a large thickness. After the mortar on the floor surface is polished and broken by the rough polishing disc, the polished and broken mortar is sucked into the dust suction head under the action of the dust collector and then into the dust collector through the air suction pipe. Subsequently, the residual mortar is further polished by the fine polishing assembly to ensure that the floor surface after polishing is smooth. Since the thickness of the mortar on the floor surface is different, the rough polishing disc will automatically adjust the gap from the floor according to the thickness of the mortar and automatically adjust the pressure applied to the rough polishing disc under the action of the follow-up supercharging mechanism to ensure that the rough polishing disc can automatically adjust the polishing and breaking intensity of the mortar according to the thickness of the mortar.

[0024] Through the different actions of the rough polishing disc in response to the change in the thickness of the mortar, the spring can be linearly compressed when the thickness of the mortar is within a certain range to ensure that the rough polishing disc can process the mortar on the floor with a matching polishing intensity. At the same time, it can also prevent the rough polishing disc from being severely worn due to continuous high-intensity polishing. When processing the mortar on the floor with a large thickness, the spring's elastic potential energy can be quickly increased through bidirectional extrusion to ensure that the rough polishing disc can provide sufficient polishing pressure to the mortar. In this way, the polishing intensity of the rough polishing disc is automatically adjusted when processing mortar with different thicknesses to ensure that the redundant mortar on the floor is fully processed.

[0025] By cleaning the broken mortar before the fine polishing disc works, the broken mortar can be prevented from again acting on the fine polishing disc, which can increase the dust on the floor surface and also reduce the wear of the fine polishing disc, thereby increasing the service life of the fine polishing disc. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 It is a structural schematic view of the building construction floor dust removal and cleaning device embodiment.

[0027] Figure 2 Figure 8 is a structural schematic view of the building construction ground dust cleaning device in another embodiment.

[0028] Figure 3 Figure 9 is a schematic view of the connection relationship of the rough grinding assembly, the fine grinding mechanism, the follow-up pressure increasing mechanism, and the lifting assembly in the building construction ground dust cleaning device.

[0029] Figure 4 Figure 10 is a structural schematic view of the building construction ground dust cleaning device in another embodiment. Figure 3 Figure 11 is an enlarged structural schematic view of position A in Figure 10.

[0030] Figure 5 Figure 12 is a structural schematic view of the rough grinding assembly, the follow-up pressure increasing mechanism, and the fine grinding assembly in the building construction ground dust cleaning device.

[0031] Figure 6 Figure 13 is a structural schematic view of the rough grinding assembly and the follow-up pressure increasing mechanism in the building construction ground dust cleaning device.

[0032] Figure 7 Figure 14 is an exploded structural schematic view of the rough grinding assembly and the follow-up pressure increasing mechanism in the building construction ground dust cleaning device.

[0033] Figure 8 Figure 15 is a front structural schematic view of the follow-up pressure increasing mechanism and the rough grinding assembly in the building construction ground dust cleaning device.

[0034] Figure 9 Figure 16 is a structural schematic view of the dust collector, the air suction pipe, and the dust suction head in the building construction ground dust cleaning device.

[0035] In the figure, 1 is a frame, 2 is a guide column, 3 is a support plate, 4 is a pneumatic cylinder, 5 is a first motor, 6 is a rotating sleeve, 601 is a through groove, 7 is a rotating rod, 8 is a rough polishing disc, 9 is a limiting ring, 10 is a fixed ring, 11 is a first movable ring, 12 is a spring, 13 is a support column, 14 is a movable sleeve, 15 is a first connecting rod, 16 is a second connecting rod, 17 is a dust collector, 18 is an air suction pipe, 19 is a dust suction head, 20 is a second motor, 21 is a transmission rod, 22 is a fine polishing disc, 23 is a fixed rod, 24 is a guide plate, and 25 is a second movable ring. DETAILED DESCRIPTION

[0036] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0037] In addition, elements in the present application can be referred to as being "fixed" or "set up" on another element, which can be directly on another element or can have a middle element. When an element is considered to be "connected" to another element, it can be directly connected to another element or can have a middle element. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation.

[0038] Please refer to Figures 1-9 In the embodiment of the present application, the building construction ground dust cleaning device comprises:

[0039] A vehicle frame 1 and a lifting assembly arranged on the vehicle frame 1, wherein the lifting assembly is connected with a support plate 3;

[0040] Further comprising:

[0041] A rough grinding assembly arranged on the support plate 3, comprising a rough grinding disc 8, wherein the rough grinding assembly is capable of performing a rough grinding action on the mortar floor through the rough grinding disc 8;

[0042] A follow-up pressure increasing mechanism arranged on the rough grinding assembly, wherein the follow-up pressure increasing mechanism is capable of adjusting the grinding pressure on the rough grinding disc 8 through the rough grinding assembly when the rough grinding disc 8 moves;

[0043] A fine grinding assembly arranged on the support plate 3, used for fine grinding treatment of the mortar floor;

[0044] Please refer to Figures 1-3 , Figure 9 A dust collector 17 is fixed on the support plate 3, wherein a suction pipe 18 is connected to the dust collector 17, and a dust collection head 19 is fixed on the suction pipe 18.

[0045] Specifically, during the wall plastering process, part of the mortar may splash on the floor, and the mortar will be adsorbed on the floor as the mortar dries, resulting in uneven floor. Therefore, the mortar on the floor needs to be polished and cleaned. During the polishing process, the frame 1 will travel along the floor to be polished, and drive the coarse grinding assembly to move. The coarse grinding assembly will drive the coarse grinding disc 8 to rotate, and under the action of the follow-up pressure increasing mechanism, the mortar will be polished and broken, and the polishing pressure required by the mortar will be provided to ensure that the mortar on the floor is polished and broken smoothly. When the mortar on the floor is polished and broken by the coarse grinding disc 8, under the action of the dust collector 17, a negative pressure is formed in the suction head 19 through the suction pipe 18, and under the action of the negative pressure, the polished and broken mortar is sucked into the suction head 19, and then into the dust collector 17 through the suction pipe 18. Subsequently, under the action of the fine grinding assembly, the remaining small amount of mortar is further polished to ensure that the floor after polishing remains flat. Since the thickness of the mortar on the floor is different, the coarse grinding disc 8 will automatically adjust the gap from the ground according to the thickness of the mortar, and under the action of the follow-up pressure increasing mechanism, the pressure applied to the coarse grinding disc 8 will be automatically adjusted to ensure that the coarse grinding disc 8 can automatically adjust the polishing and breaking strength of the mortar according to the thickness of the mortar.

[0046] Please refer to Figures 1-3 , the lifting assembly comprises a guide column 2 fixed on the frame 1, the guide column 2 is in sliding connection with the support plate 3, and the frame 1 is fixedly connected with a cylinder 4 fixedly connected with the support plate 3.

[0047] It should be noted that before polishing, in order to prevent the coarse grinding disc 8 from interfering with the ground when it is in a stationary state due to uneven ground, the support plate 3 needs to be controlled by the cylinder 4 to be at the end of the stroke away from the ground. When the mortar on the floor needs to be polished and cleaned, the thickness of the mortar can be measured, and then the initial gap of the coarse grinding disc 8 from the ground can be adjusted according to the measurement results. For this purpose, the cylinder 4 controls the support plate 3 to slide along the guide column 2 in the axial direction to adjust the gap of the coarse grinding disc 8 from the ground through the coarse grinding assembly, so as to ensure the best polishing and cleaning effect.

[0048] Please refer to Figures 1-3 、 Figures 5-8 , the coarse grinding assembly comprises a first motor 5 fixed on the support plate 3, a rotating sleeve 6 connected with the output shaft of the first motor 5 is rotatably installed on the support plate 3, a rotating rod 7 is axially slidably arranged in the rotating sleeve 6, and the rotating rod 7 is fixedly connected with the coarse grinding disc 8.

[0049] Please refer to Figures 1-8The follow-up pressurizing mechanism comprises a fixed ring 10 fixed on the rotating sleeve 6, a first movable ring 11 axially sliding with the rotating sleeve 6 and abutting against the fixed ring 10, a spring 12 sleeved on the rotating sleeve 6 and the rotating rod 7, and two ends of the spring 12 abutting against the first movable ring 11 and the rough polishing disc 8 respectively; further comprising a sliding assembly and a guiding assembly arranged on the rotating sleeve 6 and used for driving the first movable ring 11 to axially slide along the rotating sleeve 6, the sliding assembly comprising a through slot 601 opened on the circumferential outer wall of the rotating sleeve 6, a limiting ring 9 and a second movable ring 25 axially sliding with the rotating sleeve 6, the limiting ring 9 penetrating through the through slot 601 and fixedly connected with the rotating rod 7, and the guiding assembly comprising a support column 13 fixed on the circumferential outer wall of the rotating sleeve 6, the support column 13 axially sliding with a movable sleeve 14, the movable sleeve 14 being hinged with a first connecting rod 15 and a second connecting rod 16, the first connecting rod 15 being hinged with the first movable ring 11, and the second connecting rod 16 being hinged with the second movable ring 25.

[0050] In detail, the circumferential outer wall of the rough polishing disc 8 is arranged in a circular arc shape, so that when the rough polishing disc 8 travels along the desired polishing direction and acts on the mortar with different thicknesses on the floor, the rough polishing disc 8 can automatically give way in the vertical direction, so that the polishing surface of the rough polishing disc 8 towards the floor can smoothly act on the mortar with different thicknesses.

[0051] In the initial state, the rotating rod 7 is located at the stroke end away from the support plate 3, so that the limiting ring 9 is located at the stroke end away from the support plate 3 on the side of the through slot 601, at this time, the distance between the rough polishing disc 8 and the first movable ring 11 is the largest, and the elongation of the spring 12 in the natural state is greater than the maximum distance between the rough polishing disc 8 and the first movable ring 11, for this, the spring 12 is in a pre-compressed state and always provides a pushing force to the first movable ring 11 and the rough polishing disc 8 in the direction away from each other, so that the first movable ring 11 abuts against the fixed ring 10, under the action of the first movable ring 11, the movable sleeve 14 is controlled to be located at the stroke end away from the rotating sleeve 6 on the side of the support column 13 through the first connecting rod 15, so as to control the distance between the second movable ring 25 and the first movable ring 11 to be the smallest through the second connecting rod 16, and the second movable ring 25 is in a separated state from the limiting ring 9, in this state, the polishing pressure provided by the spring 12 to the rough polishing disc 8 is the smallest.

[0052] When the mortar on the floor needs to be polished, the coarse polishing disc 8 is mainly used to process the mortar with large thickness, and the ground clearance of the coarse polishing disc 8 is smaller than the thickness of the mortar to be processed. At this time, the frame 1 travels along the ground to be processed, and drives the coarse polishing disc 8 to move, and under the action of the first motor 5, the rotating sleeve 6 rotates, thereby driving the rotating rod 7 to rotate through the cooperation of the through slot 601 and the limiting ring 9, so that the coarse polishing disc 8 rotates;

[0053] When the coarse polishing disc 8 is in contact with the mortar, the coarse polishing disc 8 will yield in the vertical direction, so that the polishing surface of the coarse polishing disc 8 towards the ground direction can smoothly act on the mortar. If the thickness of the mortar is within a certain range, that is, the thickness of the mortar is slightly larger than the ground clearance of the coarse polishing disc 8, when the coarse polishing disc 8 yields, it will drive the rotating rod 7 to move towards the rotating sleeve 6 direction, thereby controlling the limiting ring 9 to move along the length direction of the through slot 601 and towards the direction close to the support plate 3. The coarse polishing disc 8 will also compress the spring 12, and under the action of the spring 12, it can increase the polishing intensity of the coarse polishing disc 8 on the mortar to a certain extent, so as to ensure that the mortar can be polished and broken smoothly.

[0054] If the thickness of the mortar exceeds the set range, that is, the thickness of the mortar is greatly different from the ground clearance of the coarse polishing disc 8, the yield distance of the coarse polishing disc 8 is large, so that the travel distance of the limiting ring 9 along the length direction of the through slot 601 increases. When the limiting ring 9 abuts against the second movable ring 25, the limiting ring 9 will drive the second movable ring 25 to slide along the axial direction of the rotating sleeve 6. The second movable ring 25 will also drive the movable sleeve 14 to slide along the axial direction of the support column 13 and move towards the direction close to the rotating sleeve 6 through the second connecting rod 16. Under the action of the movable sleeve 14, the first movable ring 11 is controlled to slide along the axial direction of the rotating sleeve 6 and move towards the direction close to the coarse polishing disc 8 through the first connecting rod 15. For this purpose, the spring 12 will be subjected to the bidirectional extrusion action of the first movable ring 11 and the coarse polishing disc 8, so as to rapidly increase the elastic potential energy of the spring 12, and ensure that the coarse polishing disc 8 can provide sufficient polishing intensity when polishing and cleaning the mortar with large thickness.

[0055] Preferably, by the different actions of the coarse polishing disc 8 in response to the change of the thickness of the mortar, the spring 12 can be linearly compressed when the thickness of the mortar is within a certain range, so as to ensure that the coarse polishing disc 8 can process the mortar with matching polishing intensity, and also prevent the coarse polishing disc 8 from being severely worn due to continuous high-intensity polishing. When processing the mortar with large thickness, the elastic potential energy of the spring 12 can be rapidly increased through bidirectional extrusion, so as to ensure that the coarse polishing disc 8 can provide sufficient polishing pressure to the mortar. In this way, the polishing intensity of the coarse polishing disc 8 is adaptively adjusted when processing mortars with different thicknesses, and the mortars are fully processed.

[0056] Wherein, an infrared sensor can also be installed on the support plate 3, which is used to detect the distance between the support plate 3 and the rough polishing disc 8 in real time, and according to the distance change, the output power of the first motor 5 is adjusted, so that when the rough polishing disc 8 deals with the mortar with large thickness, the rotation speed of the rough polishing disc 8 can be increased, thereby further enhancing the polishing strength of the rough polishing disc 8, so as to ensure that the mortar is effectively treated. The infrared sensor is an application of the prior art, and the present application will not be described in detail.

[0057] Please refer to Figures 1-3 、 Figure 5 , the fine grinding assembly includes a second motor 20 fixed on the support plate 3, a transmission rod 21 connected with the output shaft of the second motor 20 is rotatably installed on the support plate 3, and a fine polishing disc 22 is fixed at the end of the transmission rod 21.

[0058] Please refer to Figure 5 , a fixed rod 23 is fixed on the support plate 3, and a guide plate 24 for supporting the rotating sleeve 6 and the transmission rod 21 is slidably connected with the transmission rod 21 and the rotating sleeve 6 at the end of the fixed rod 23.

[0059] Further, the fine polishing disc 22 is arranged behind the rough polishing disc 8 in the running direction, and the fine polishing disc 22 has a small ground clearance, which is used to process a small amount of residual mortar after the rough polishing disc 8 is processed, so that the ground is in a flat state after the fine polishing disc 22 is processed.

[0060] The dust collector 17 includes a negative pressure dust collection module and a collection module, the negative pressure dust collection module is used for air suction treatment to form negative pressure in the system, and the collection module is a dust box or a dust bag, which is used to collect the mortar after being polished and broken. This is an application of the prior art. After the rough polishing disc 8 performs preliminary polishing and breaking treatment on the mortar, the dust collector 17 works, and forms negative pressure in the suction head 19 through the suction pipe 18. Under the action of negative pressure, the broken mortar remaining after the rough polishing disc 8 is polished is absorbed and treated, and is transported to the collection module of the dust collector 17 through the suction pipe 18.

[0061] By cleaning the broken mortar on the floor before the fine polishing disc 22 works, the broken mortar can be prevented from acting on the fine polishing disc 22 again, which increases the dust on the ground, and also reduces the wear of the fine polishing disc 22, thereby increasing the service life of the fine polishing disc 22.

[0062] When the broken mortar on the floor is absorbed, the residual mortar on the floor is thin and less, and the residual mortar is fine polished and leveled by the rotation of the fine polishing disc 22 controlled by the transmission rod 21 under the action of the second motor 20. Thus, the mortar is polished and cleaned more completely under the double treatment of coarse and fine polishing, so as to ensure that the treated floor is in a flat state.

[0063] When the frame 1 moves, the horizontal force opposite to the moving direction is generated when the coarse polishing disc 8 or the fine polishing disc 22 acts on the mortar, which may cause the rotation sleeve 6 or the transmission rod 21 to shake, and further cause the polishing surfaces of the coarse polishing disc 8 and the fine polishing disc 22 to be misaligned. Under the action of the fixed rod 23 and the guide plate 24, the stability of the rotation sleeve 6 and the transmission rod 21 is increased, so as to offset the horizontal force and ensure that the rotation sleeve 6 and the transmission rod 21 are always stable when rotating.

[0064] It is apparent for those skilled in the art that the present application is not limited to the details of the above exemplary embodiments, but can be implemented in other concrete forms without departing from the spirit or essential characteristics of the present application. Therefore, the embodiments should be considered in all aspects as illustrative and not restrictive, and the scope of the present application is defined by the appended claims rather than the above description, and all changes falling within the meaning and range of the equivalent elements of the claims are intended to be embraced in the present application. Any reference signs in the claims should not be considered as limiting the claims involved.

[0065] In addition, it should be understood that although the present specification is described in terms of embodiments, not every embodiment contains only one independent technical solution, and the description of the specification is only for the sake of clarity, and those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can be properly combined to form other embodiments that those skilled in the art can understand.

Claims

1. A building construction site dust cleaning device, comprising: a vehicle frame, and a lifting assembly arranged on the vehicle frame, and a support plate connected to the lifting assembly; characterized in that it further comprises: a rough grinding assembly arranged on the support plate, comprising a rough grinding disc, the rough grinding assembly being capable of performing a rough grinding action on the mortar floor through the rough grinding disc; a follow-up pressure increasing mechanism arranged on the rough grinding assembly, the follow-up pressure increasing mechanism being capable of adjusting the grinding pressure on the rough grinding disc through the rough grinding assembly when the rough grinding disc is moving; a fine grinding assembly arranged on the support plate for fine grinding treatment of the mortar floor; the rough grinding assembly comprises a first motor fixed on the support plate, a rotating sleeve connected to the output shaft of the first motor is rotatably arranged on the support plate, a rotating rod axially slides in the rotating sleeve, and the rotating rod is fixedly connected with the rough grinding disc; the follow-up pressure increasing mechanism comprises a fixed ring fixed on the rotating sleeve, a first movable ring axially slides on the rotating sleeve and abuts against the fixed ring, a spring is sleeved on the rotating sleeve and the rotating rod, and the two ends of the spring respectively abut against the first movable ring and the rough grinding disc; further comprising a sliding assembly and a guide assembly arranged on the rotating sleeve for driving the first movable ring to axially slide along the rotating sleeve; the sliding assembly comprises a through slot opened in the circumferential outer wall of the rotating sleeve, a limiting ring and a second movable ring axially slide on the rotating sleeve, and the limiting ring penetrates through the through slot and is fixedly connected with the rotating rod; the guide assembly comprises a support column fixed on the circumferential outer wall of the rotating sleeve, an active sleeve axially slides on the support column, a first connecting rod and a second connecting rod are hinged on the active sleeve, the first connecting rod is hinged with the first movable ring, and the second connecting rod is hinged with the second movable ring; Due to the different thicknesses of the mortar on the floor, the rough grinding disc will automatically adjust the gap from the ground according to the thickness of the mortar, and under the action of the follow-up pressure increasing mechanism, the pressure applied to the rough grinding disc is self-adaptively adjusted, so as to ensure that the rough grinding disc can self-adaptively adjust the grinding and crushing intensity of the mortar according to the thickness of the mortar.

2. The construction site floor dusting and cleaning apparatus of claim 1, wherein, the fine grinding assembly comprises a second motor fixed on the support plate, a transmission rod connected with the output shaft of the second motor is rotatably arranged on the support plate, and a fine grinding disc is fixed on the end of the transmission rod.

3. The construction site floor dusting and cleaning apparatus of claim 1, wherein, the lifting assembly comprises a guide column fixed on the vehicle frame, the guide column is slidingly connected with the support plate, and a cylinder fixedly connected with the support plate is fixed on the vehicle frame.

4. The construction site floor dusting and cleaning apparatus of claim 2, wherein, a fixed rod is fixed on the support plate, a guide plate slidingly connected with the transmission rod and the rotating sleeve is fixed on the end of the fixed rod, and the guide plate is used for performing a supporting action on the rotating sleeve and the transmission rod.

5. The construction site floor dusting and cleaning apparatus of claim 1, wherein, a dust collector is fixed on the support plate, a suction pipe is connected to the dust collector, and a dust collection head is fixed on the suction pipe.

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