CN111890152A

CN111890152A - A equipment of polishing for building engineering

Info

Publication number: CN111890152A
Application number: CN202010666655.8A
Authority: CN
Inventors: 蒙泽喜
Original assignee: Guangzhou Lindian Technology Co ltd
Current assignee: Guangzhou Lindian Technology Co ltd
Priority date: 2020-07-13
Filing date: 2020-07-13
Publication date: 2020-11-06

Abstract

The invention relates to a polishing device for building engineering, which comprises a vehicle plate, a polishing device, a protective plate, a push handle, a water box, a first connecting pipe, a first nozzle, a cleaning mechanism and four moving mechanisms, wherein the cleaning mechanism comprises a collecting box, a water pumping assembly, a connecting box, a filter screen, a second connecting pipe, a second nozzle, a control assembly, a driving assembly and a plurality of suction nozzles, the control assembly comprises a screw rod, a driving shaft, a floating plate, a ball screw bearing, a fixing plate, a delay switch and two first bearings, the driving assembly comprises a slide way, a control block, a second spring and a control switch, the moving mechanism comprises a fixing box, an electromagnet, an iron block, a moving plate, a moving rod, a moving wheel and a first spring, the polishing device for building engineering realizes the function of collecting sewage through the cleaning mechanism, improves the convenience of cleaning, and can be moved through the moving mechanism without lifting the device, the convenience of the mobile equipment is improved.

Description

A equipment of polishing for building engineering

Technical Field

The invention relates to the field of constructional engineering, in particular to polishing equipment for constructional engineering.

Background

Terrazzo is an artificial stone material and has the characteristics of high density, high hardness, wear resistance, low price, convenient construction and the like. The terrazzo grinding machine is mainly used for grinding and renewing terrazzo ground.

Present terrazzo polisher is for preventing dust, spray the clear water when polishing usually, make dust and clear water mix and remain subaerial, thereby need artificial to clear up mud impurity, staff's work burden has been increased, the convenience of clearance has been reduced, moreover, the mill of present terrazzo polisher supports with ground and leans on, when needs mobile device, need lift equipment, make mill and ground separation just can mobile device, thereby mobile device's difficulty has been increased, the practicality of present terrazzo polisher has been reduced.

Disclosure of Invention

The technical problem to be solved by the invention is as follows: in order to overcome the defects of the prior art, the grinding equipment for the building engineering is provided.

The technical scheme adopted by the invention for solving the technical problems is as follows: a polishing device for constructional engineering comprises a vehicle plate, a polishing device, a protection plate, a pushing handle, a water box, a first connecting pipe and a first nozzle, wherein the polishing device is arranged below the vehicle plate, the protection plate is shaped like a Chinese character 'hui', the protection plate is fixed below the vehicle plate, the polishing device is arranged in the protection plate, the pushing handle is fixed on one side above the vehicle plate, the water box is fixed on the other side above the vehicle plate, the first nozzle is fixed below the vehicle plate, the first nozzle is communicated with the water box through the first connecting pipe, a first valve is arranged in the first connecting pipe, a PLC is arranged in the vehicle plate, the first valve is electrically connected with the PLC, the cleaning device further comprises a cleaning mechanism and four moving mechanisms, the cleaning mechanism is arranged on one side above the vehicle plate, which is close to the pushing handle, the four moving mechanisms are respectively arranged at four corners below the vehicle plate, the moving mechanism is connected with the cleaning mechanism;

the cleaning mechanism comprises a collecting box, a water pumping assembly, a connecting box, a filter screen, a second connecting pipe, a second nozzle, a control assembly, a driving assembly and a plurality of suction nozzles, the collecting box is fixed above the vehicle plate, the filter screen is obliquely fixed in the collecting box, the water pumping assembly is arranged above the vehicle plate and is connected with the collecting box, the connecting box is shaped like a Chinese character 'hui', the periphery of the connecting box is fixedly connected with the inner ring of the protection plate, the water pumping assembly is connected with the connecting box, the suction nozzles are uniformly fixed below the connecting box and are communicated with the connecting box, the second nozzle is fixed below the vehicle plate and is arranged in the protection plate, the second nozzle is communicated with the bottom in the collecting box through the second connecting pipe, a second valve is arranged in the second connecting pipe and is electrically connected with the PLC, the control assembly and the driving assembly are arranged in the collecting box, and the driving assembly is connected with the control assembly;

the control assembly comprises a screw rod, a driving shaft, a floating plate, a ball screw bearing, a fixed plate, a time delay switch and two first bearings, the two first bearings are respectively fixed at the top and the bottom in the collecting box, one end of the screw rod and one end of the driving shaft are respectively fixedly connected with inner rings of the two first bearings, the other end of the screw rod is fixedly connected with the other end of the driving shaft, the ball screw bearing is sleeved on the screw rod, a screw thread matched with the screw rod is arranged at the joint of the ball screw bearing and the screw rod, the floating plate is fixedly connected with the outer ring of the ball screw bearing, the fixed plate is fixed below the filter screen, the time delay switch is fixed below the fixed plate, the time delay switch is electrically connected with the PLC, and the driving assembly is connected with the;

the driving assembly comprises a slide way, a control block, a second spring and a control switch, two ends of the slide way are respectively and fixedly connected with the control switch and the driving shaft, the control switch is electrically connected with the PLC, a slide groove is formed in the slide way, the control block is arranged inside the slide groove, the control block is matched with the slide groove, and two ends of the second spring are respectively connected with the slide groove and the driving shaft;

moving mechanism includes fixed box, electro-magnet, iron plate, movable plate, carriage release lever, removal wheel and first spring, the below at the sweep is fixed to fixed box, the top in fixed box is fixed to the electro-magnet, the movable plate level sets up the inside at fixed box, the top at the movable plate is fixed to the iron plate, the electro-magnet is just to setting up with the iron plate, the electro-magnet is connected with the PLC electricity, the below of fixed box is equipped with the opening, the one end of carriage release lever and the below fixed connection of movable plate, the other end of carriage release lever passes the opening and removes wheel fixed connection, carriage release lever and opening match, the both ends of first spring are connected with the below of movable plate and the bottom in the fixed box respectively.

Preferably, in order to limit the moving direction of the floating plate, the control assembly further comprises a guide rod, two ends of the guide rod are fixedly connected with the top and the bottom in the collecting box respectively, the floating plate is sleeved on the guide rod, and the floating plate is connected with the guide rod in a sliding mode.

As preferred, in order to realize the function of clearance, the subassembly that draws water includes suction pump, inlet tube, outlet pipe and two communicating pipes, the top at the sweep is fixed to the suction pump, the suction pump passes through the outlet pipe and collects the top intercommunication in the box, the one end intercommunication of suction pump and inlet tube, the other end of inlet tube passes through communicating pipe and collects the box intercommunication, the suction pump is connected with the PLC electricity.

Preferably, in order to realize the grinding function, the grinding device comprises a motor and a grinding disc, the motor is fixed below the turning plate and is in transmission connection with the grinding disc, and the motor is electrically connected with the PLC.

Preferably, in order to limit the moving direction of the control block, the sliding groove is a dovetail groove.

Preferably, the opening has a square cross-sectional shape in order to restrict the moving direction of the moving rod.

Preferably, to avoid corrosion, the lead screw is coated with an anti-corrosion zinc coating.

Preferably, in order to realize the function of reducing noise, a cavity is arranged on the protection plate, and the cavity is in a vacuum state.

Preferably, in order to realize the anti-skid function, the pushing handle is provided with anti-skid lines.

Preferably, in order to control the equipment to work, the push handle is provided with a plurality of keys, and the keys are electrically connected with the PLC.

The polishing equipment for the building engineering has the advantages that the function of collecting sewage is realized through the cleaning mechanism, manual cleaning is not needed, cleaning convenience is improved, compared with the existing cleaning mechanism, the cleaning mechanism can discharge the collected sewage in time, the function of continuously collecting the sewage can be realized, the grinding disc can be separated from the ground through the moving mechanism when polishing is not needed, the equipment can be moved without lifting the equipment, convenience of the moving equipment is improved, compared with the existing moving mechanism, the moving mechanism realizes the function of wetting the grinding disc firstly when polishing is carried out, grinding marks can be reduced when polishing, and smoothness is improved.

Drawings

The invention is further illustrated with reference to the following figures and examples.

Fig. 1 is a schematic structural view of a sanding apparatus for construction engineering in accordance with the present invention;

fig. 2 is a schematic structural view of a control assembly of the sanding apparatus for construction engineering of the present invention;

FIG. 3 is an enlarged view of portion A of FIG. 2;

fig. 4 is a schematic structural view of a moving mechanism of the sanding apparatus for construction engineering of the present invention;

in the figure: 1. the water pump comprises a vehicle plate, 2. a pushing handle, 3. a water box, 4. a first connecting pipe, 5. a first nozzle, 6. a motor, 7. a grinding disc, 8. a protective plate, 9. a collecting box, 10. a filter screen, 11. a water outlet pipe, 12. a water suction pump, 13. a water inlet pipe, 14. a communicating pipe, 15. a connecting box, 16. a suction nozzle, 17. a second connecting pipe, 18. a second nozzle, 19. a floating plate, 20. a ball screw bearing, 21. a screw rod, 22. a driving shaft, 23. a fixed plate, 24. a time delay switch, 25. a slideway, 26. a second spring, 27. a control block, 28. a control switch, 29. a guide rod, 30. a fixed box, 31. an electromagnet, 32. an iron block, 33. a moving plate, 34. a moving rod, 35. a moving wheel, 36. a first spring and 37. a key.

Detailed Description

The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic views illustrating only the basic structure of the present invention in a schematic manner, and thus show only the constitution related to the present invention.

As shown in fig. 1, a polishing device for building engineering, comprising a vehicle plate 1, a polishing device, a protection plate 8, a pushing handle 2, a water box 3, a first connecting pipe 4 and a first nozzle 5, wherein the polishing device is arranged below the vehicle plate 1, the protection plate 8 is in a shape of a square, the protection plate 8 is fixed below the vehicle plate 1, the polishing device is arranged inside the protection plate 8, the pushing handle 2 is fixed on one side above the vehicle plate 1, the water box 3 is fixed on the other side above the vehicle plate 1, the first nozzle 5 is fixed below the vehicle plate 1, the first nozzle 5 is communicated with the water box 3 through the first connecting pipe 4, a first valve is arranged in the first connecting pipe 4, a PLC is arranged in the vehicle plate 1, the first valve is electrically connected with the PLC, the polishing device further comprises a cleaning mechanism and four moving mechanisms, the cleaning mechanism is arranged on one side above the vehicle plate 1, which is close to the pushing handle 2, the four moving mechanisms are respectively arranged at four corners below the vehicle plate 1 and connected with the cleaning mechanism;

PLCs, i.e., programmable logic controllers, are generally used for the processing of data and the receipt and output of instructions for central control.

This a polishing equipment for building engineering passes through clean mechanism, has realized the function of collecting sewage, need not artificial clearance, has improved clear convenience, through moving mechanism, can make mill 7 and ground separation when need not to polish to need not to lift equipment just can the mobile device, improved the convenience of mobile device.

As shown in fig. 1-3, the cleaning mechanism includes a collection box 9, a water pumping assembly, a connection box 15, a filter screen 10, a second connecting pipe 17, a second nozzle 18, a control assembly, a driving assembly and a plurality of suction nozzles 16, the collection box 9 is fixed above the vehicle board 1, the filter screen 10 is obliquely fixed inside the collection box 9, the water pumping assembly is arranged above the vehicle board 1, the water pumping assembly is connected with the collection box 9, the connection box 15 is shaped like a Chinese character 'hui', the periphery of the connection box 15 is fixedly connected with the inner ring of the protection board 8, the water pumping assembly is connected with the connection box 15, the suction nozzles 16 are uniformly fixed below the connection box 15, the suction nozzles 16 are communicated with the connection box 15, the second nozzle 18 is fixed below the vehicle board 1, the second nozzle 18 is arranged inside the protection board 8, the second nozzle 18 is communicated with the bottom inside the collection box 9 through the second connecting pipe 17, a second valve is arranged in the second connecting pipe 17 and electrically connected with the PLC, the control assembly and the driving assembly are both arranged inside the collecting box 9, and the driving assembly is connected with the control assembly;

the control assembly comprises a screw rod 21, a driving shaft 22, a floating plate 19, a ball screw bearing 20, a fixing plate 23, a time delay switch 24 and two first bearings, wherein the two first bearings are respectively fixed at the top and the bottom in the collecting box 9, one end of the screw rod 21 and one end of the driving shaft 22 are respectively fixedly connected with the inner rings of the two first bearings, the other end of the screw rod 21 is fixedly connected with the other end of the driving shaft 22, the ball screw bearing 20 is sleeved on the screw rod 21, a screw thread matched with the screw rod 21 is arranged at the joint of the ball screw bearing 20 and the screw rod 21, the floating plate 19 is fixedly connected with the outer ring of the ball screw bearing 20, the fixing plate 23 is fixed below the filter screen 10, the time delay switch 24 is fixed below the fixing plate 23, and the time delay switch 24 is electrically connected with the, the drive assembly is connected to a drive shaft 22;

the driving assembly comprises a slide way 25, a control block 27, a second spring 26 and a control switch 28, two ends of the slide way 25 are respectively fixedly connected with the control switch 28 and the driving shaft 22, the control switch 28 is electrically connected with the PLC, a slide way is arranged on the slide way 25, the control block 27 is arranged inside the slide way, the control block 27 is matched with the slide way, and two ends of the second spring 26 are respectively connected with the slide way and the driving shaft 22;

when cleaning is carried out, the water pumping assembly is controlled to work, and sewage on the ground can be sucked into the collecting box 9, so that the function of collecting the sewage is realized, the function of cleaning the sewage is realized, manual cleaning is avoided, the cleaning convenience is improved, after the sewage is guided into the collecting box 9, the sewage is guided into the lower part of the filter screen 10 after impurity removal of the filter screen 10, the floating plate 19 moves upwards, after certain sewage is collected, the floating plate 19 is abutted against the delay switch 24 and sends a signal to the PLC, the PLC controls the first valve to be closed for a period of time, the second valve is opened for a period of time, so that the collected sewage is guided into the second nozzle 18 through the second connecting pipe 17, water is sprayed to the grinding disc 7, the sewage amount in the collecting box 9 is reduced, the problem that excessive sewage is collected and the sewage cannot be continuously collected is avoided, and the function of continuously cleaning the sewage is realized, when the floating plate 19 upwards moves, the ball screw bearing 20 is driven to move along the screw rod 21, the screw rod 21 is driven to rotate, the driving shaft 22 is driven to rotate, the control block 27 moves towards the direction far away from the rotating shaft under the action of centrifugal force, the control block 27 abuts against the control switch 28, the second spring 26 is stretched, and a signal is sent to the PLC to control the movement mechanism to work.

As shown in fig. 4, the moving mechanism includes a fixed box 30, an electromagnet 31, an iron block 32, a moving plate 33, a moving rod 34, a moving wheel 35 and a first spring 36, the fixed box 30 is fixed below the vehicle plate 1, the electromagnet 31 is fixed at the top of the fixed box 30, the moving plate 33 is horizontally arranged inside the fixed box 30, the iron block 32 is fixed above the moving plate 33, the electromagnet 31 and the iron block 32 are arranged just opposite to each other, the electromagnet 31 is electrically connected with the PLC, an opening is arranged below the fixed box 30, one end of the moving rod 34 is fixedly connected with the lower side of the moving plate 33, the other end of the moving rod 34 penetrates through the opening and is fixedly connected with the moving wheel 35, the moving rod 34 is matched with the opening, and two ends of the first spring 36 are respectively connected with the lower side of the moving plate 33 and the bottom of the fixed box 30.

When polishing is needed, the first valve is controlled to be opened firstly, so that water in the water tank is led into the nozzle through the first connecting pipe 4, clean water is sprayed onto the grinding disc 7, the grinding disc 7 is wet, the water pumping assembly is controlled to work simultaneously, sewage is led into the collecting box 9, the floating plate 19 moves upwards, the driving shaft 22 rotates, the control block 27 moves towards the direction far away from the rotating shaft under the action of centrifugal force, the control block 27 abuts against the control switch 28, the second spring 26 is stretched, a signal is sent to the PLC, the PLC controls the electromagnet 31 to be electrified, the iron block 32 is attracted, the moving plate 33 is driven to move upwards, the moving rod 34 drives the moving wheel 35 to move towards the direction close to the fixing box 30, the first spring 36 is stretched, the height of the car plate 1 is reduced, the grinding disc 7 abuts against the ground, the function of wetting the grinding disc 7 firstly during polishing is realized, and grinding marks can be reduced during polishing, smoothness is improved, after polishing is finished, the water pumping assembly does not work any more, the floating plate 19 does not move any more, the driving shaft 22 stops rotating, the control block 27 is separated from the control switch 28 through the restoring force of the second spring 26, the control electromagnet 31 is powered off, the moving plate 33 moves downwards through the restoring force of the first spring 36, the vehicle plate 1 is lifted, the grinding disc 7 is separated from the ground, the equipment can be moved without lifting the equipment, and convenience of moving the equipment is improved.

Preferably, in order to limit the moving direction of the floating plate 19, the control assembly further comprises a guide rod 29, two ends of the guide rod 29 are fixedly connected with the top and the bottom of the collecting box 9 respectively, the floating plate 19 is sleeved on the guide rod 29, and the floating plate 19 is slidably connected with the guide rod 29.

By arranging the guide rod 29, the moving direction of the guide rod 29 is limited, so that the floating plate 19 is more stable when moving up and down, the ball screw bearing 20 cannot rotate when moving along the screw rod 21, and the stability of the screw rod 21 during rotation is improved.

As preferred, in order to realize the function of clearance, the subassembly that draws water includes suction pump 12, inlet tube 13, outlet pipe 11 and two communicating pipes 14, suction pump 12 is fixed in the top of sweep 1, suction pump 12 passes through outlet pipe 11 and collects the top intercommunication in the box 9, suction pump 12 communicates with the one end of inlet tube 13, the other end of inlet tube 13 passes through communicating pipe 14 and collects box 9 and communicates, suction pump 12 is connected with the PLC electricity.

When cleaning work is carried out, the water suction pump 12 is controlled to work, the sewage on the ground can be sucked into the connecting box 15, then the sewage is led into the water inlet pipe 13 through the communicating pipe 14, and then the sewage is led into the collecting box 9 through the water outlet pipe 11, so that the function of collecting the sewage is realized, and the function of cleaning the sewage is realized.

Preferably, in order to realize the grinding function, the grinding device comprises a motor 6 and a grinding disc 7, the motor 6 is fixed below the vehicle plate 1, the motor 6 is in transmission connection with the grinding disc 7, and the motor 6 is electrically connected with the PLC.

When polishing, the control motor 6 is started to drive the grinding disc 7 to rotate, so that the grinding disc 7 can polish workpieces, and the polishing function is realized.

Preferably, the sliding grooves are dovetail grooves to limit the moving direction of the control block 27.

Preferably, the opening has a square cross-sectional shape in order to limit the moving direction of the moving rod 34.

By providing the opening as a square hole, the moving rod 34 does not rotate when moving, thereby improving the stability of the moving rod 34 when moving.

Preferably, the lead screw 21 is coated with an anti-corrosion zinc coating in order to avoid corrosion.

Preferably, in order to realize the function of reducing noise, a cavity is arranged on the protection plate 8, and the cavity is in a vacuum state.

Through setting up the vacuous cavity, reduced the propagation medium of sound to realized falling the function of making an uproar, avoided polishing the sound too big and influence the healthy of staff.

Preferably, in order to realize the anti-skid function, the pushing handle 2 is provided with anti-skid lines.

Through setting up anti-skidding line, increased the frictional force between staff and pushing hands 2 for the staff is difficult to separate with pushing hands 2, thereby has improved the stability when staff holds pushing hands 2.

Preferably, in order to control the operation of the equipment, a plurality of keys 37 are arranged on the push handle 2, and the keys 37 are electrically connected with the PLC.

Through setting up button 37, can control equipment work, improved the intelligent degree of equipment.

When cleaning is carried out, the water pumping assembly is controlled to work, and sewage on the ground can be sucked into the collecting box 9, so that the function of collecting the sewage is realized, the function of cleaning the sewage is realized, manual cleaning is avoided, the cleaning convenience is improved, after the sewage is guided into the collecting box 9, the sewage is guided into the lower part of the filter screen 10 after impurity removal of the filter screen 10, the floating plate 19 moves upwards, after certain sewage is collected, the floating plate 19 is abutted against the delay switch 24 and sends a signal to the PLC, the PLC controls the first valve to be closed for a period of time, the second valve is opened for a period of time, so that the collected sewage is guided into the second nozzle 18 through the second connecting pipe 17, water is sprayed to the grinding disc 7, the sewage amount in the collecting box 9 is reduced, the problem that excessive sewage is collected and the sewage cannot be continuously collected is avoided, and the function of continuously cleaning the sewage is realized, when the floating plate 19 moves upwards, the ball screw bearing 20 is driven to move along the screw rod 21, the screw rod 21 is driven to rotate, the driving shaft 22 is driven to rotate, the control block 27 is driven to move towards the direction far away from the rotating shaft under the action of centrifugal force, the control block 27 is driven to abut against the control switch 28, the second spring 26 is stretched, a signal is sent to the PLC, the PLC controls the electromagnet 31 to be electrified, the iron block 32 is attracted, the moving plate 33 is driven to move upwards, the moving wheel 35 is driven to move towards the direction close to the fixed box 30 through the moving rod 34, the first spring 36 is stretched, the height of the turning plate 1 is reduced, the grinding plate 7 abuts against the ground, the function of wetting the grinding plate 7 firstly during grinding is realized, grinding marks can be reduced during grinding, smoothness is improved, after grinding is finished, the water pumping assembly does not work any more, the floating plate 19 does not, through the restoring force of second spring 26, control block 27 is separated from control switch 28, so that electromagnet 31 is controlled to be powered off, and through the restoring force of first spring 36, moving plate 33 is moved downwards, so that lath 1 is lifted, grinding disc 7 is separated from the ground, so that the equipment can be moved without lifting the equipment, and the convenience of moving the equipment is improved.

Compared with the prior art, this a equipment of polishing for building engineering passes through clean mechanism, the function of collecting sewage has been realized, need not artificial clearance, the clear convenience has been improved, compare with current clean mechanism, this clean mechanism can in time be with the sewage discharge who collects, can realize the function of continuously collecting sewage, through moving mechanism, can make mill 7 and ground separation when need not to polish, thereby need not to lift equipment just can moving equipment, the convenience of moving equipment has been improved, compare with current moving mechanism, this moving mechanism has realized soaking earlier the function of mill 7 when polishing, thereby can reduce the mill mark when making to polish, improve smoothness degree.

In light of the foregoing description of the preferred embodiment of the present invention, many modifications and variations will be apparent to those skilled in the art without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.

Claims

1. A polishing device for constructional engineering comprises a vehicle plate (1), a polishing device, a protection plate (8), a push handle (2), a water box (3), a first connecting pipe (4) and a first nozzle (5), wherein the polishing device is arranged below the vehicle plate (1), the protection plate (8) is in a shape of a square, the protection plate (8) is fixed below the vehicle plate (1), the polishing device is arranged inside the protection plate (8), the push handle (2) is fixed on one side above the vehicle plate (1), the water box (3) is fixed on the other side above the vehicle plate (1), the first nozzle (5) is fixed below the vehicle plate (1), the first nozzle (5) is communicated with the water box (3) through the first connecting pipe (4), a first valve is arranged in the first connecting pipe (4), a PLC is arranged in the vehicle plate (1), the first valve is electrically connected with the PLC, and the device is characterized by further comprising a cleaning mechanism and four moving mechanisms, wherein the cleaning mechanism is arranged on one side, close to the push handle (2), above the vehicle plate (1), the four moving mechanisms are respectively arranged at four corners below the vehicle plate (1), and the moving mechanisms are connected with the cleaning mechanism;

the cleaning mechanism comprises a collecting box (9), a water pumping assembly, a connecting box (15), a filter screen (10), a second connecting pipe (17), a second nozzle (18), a control assembly, a driving assembly and a plurality of suction nozzles (16), wherein the collecting box (9) is fixed above the vehicle plate (1), the filter screen (10) is obliquely fixed in the collecting box (9), the water pumping assembly is arranged above the vehicle plate (1), the water pumping assembly is connected with the collecting box (9), the connecting box (15) is shaped like a Chinese character 'hui', the periphery of the connecting box (15) is fixedly connected with an inner ring of a protection plate (8), the water pumping assembly is connected with the connecting box (15), the suction nozzles (16) are uniformly fixed below the connecting box (15), the suction nozzles (16) are communicated with the connecting box (15), and the second nozzle (18) is fixed below the vehicle plate (1), the second nozzle (18) is arranged inside the protection plate (8), the second nozzle (18) is communicated with the bottom inside the collection box (9) through a second connecting pipe (17), a second valve is arranged in the second connecting pipe (17), the second valve is electrically connected with the PLC, the control assembly and the driving assembly are both arranged inside the collection box (9), and the driving assembly is connected with the control assembly;

the control assembly comprises a screw rod (21), a driving shaft (22), a floating plate (19), a ball screw bearing (20), a fixing plate (23), a time delay switch (24) and two first bearings, wherein the two first bearings are respectively fixed at the top and the bottom in the collecting box (9), one end of the screw rod (21) and one end of the driving shaft (22) are respectively fixedly connected with the inner rings of the two first bearings, the other end of the screw rod (21) is fixedly connected with the other end of the driving shaft (22), the ball screw bearing (20) is sleeved on the screw rod (21), a connecting part of the ball screw bearing (20) and the screw rod (21) is provided with threads matched with the screw rod (21), the floating plate (19) is fixedly connected with the outer ring of the ball screw bearing (20), the fixing plate (23) is fixed below the filter screen (10), the delay switch (24) is fixed below the fixing plate (23), the delay switch (24) is electrically connected with the PLC, and the driving assembly is connected with the driving shaft (22);

the driving assembly comprises a slide way (25), a control block (27), a second spring (26) and a control switch (28), two ends of the slide way (25) are fixedly connected with the control switch (28) and the driving shaft (22) respectively, the control switch (28) is electrically connected with the PLC, the slide way (25) is provided with a slide groove, the control block (27) is arranged inside the slide groove, the control block (27) is matched with the slide groove, and two ends of the second spring (26) are connected with the slide groove and the driving shaft (22) respectively;

the moving mechanism comprises a fixed box (30), an electromagnet (31), an iron block (32), a moving plate (33), a moving rod (34), a moving wheel (35) and a first spring (36), the fixed box (30) is fixed below the sweeping board (1), the electromagnet (31) is fixed at the top of the fixed box (30), the moving plate (33) is horizontally arranged inside the fixed box (30), the iron block (32) is fixed above the moving plate (33), the electromagnet (31) and the iron block (32) are arranged oppositely, the electromagnet (31) is electrically connected with the PLC, an opening is arranged below the fixed box (30), one end of the moving rod (34) is fixedly connected with the lower part of the moving plate (33), the other end of the moving rod (34) penetrates through the opening and is fixedly connected with the moving wheel (35), and the moving rod (34) is matched with the opening, two ends of the first spring (36) are respectively connected with the lower part of the moving plate (33) and the bottom in the fixed box (30).

2. The grinding apparatus for construction engineering according to claim 1, wherein the control assembly further comprises a guide rod (29), both ends of the guide rod (29) are fixedly connected with the top and the bottom inside the collecting box (9), respectively, the floating plate (19) is sleeved on the guide rod (29), and the floating plate (19) is connected with the guide rod (29) in a sliding manner.

3. The grinding device for building engineering according to claim 1, characterized in that the water pumping assembly comprises a water pumping pump (12), a water inlet pipe (13), a water outlet pipe (11) and two communicating pipes (14), the water pumping pump (12) is fixed above the vehicle plate (1), the water pumping pump (12) is communicated with the top inside the collecting box (9) through the water outlet pipe (11), the water pumping pump (12) is communicated with one end of the water inlet pipe (13), the other end of the water inlet pipe (13) is communicated with the collecting box (9) through the communicating pipes (14), and the water pumping pump (12) is electrically connected with the PLC.

4. Grinding device for building engineering according to claim 1, characterized in that the grinding means comprise a motor (6) and a grinding disc (7), the motor (6) being fixed under the vehicle plate (1), the motor (6) being in driving connection with the grinding disc (7), the motor (6) being electrically connected with the PLC.

5. A sanding apparatus for use in construction engineering as defined in claim 1, wherein the channels are dovetail slots.

6. A sanding apparatus for building engineering as defined in claim 1, wherein the opening is square in cross-sectional shape.

7. A sanding device for building engineering as defined in claim 1, characterized in that the screw (21) is coated with an anti-corrosion zinc coating.

8. A sanding device for building engineering as defined in claim 1, characterized in that the apron (8) is provided with a cavity, which is in a vacuum state.

9. A sanding device for building engineering as defined in claim 1, characterized in that the push handle (2) is provided with anti-slip threads.

10. Grinding device for building engineering according to claim 1, characterized in that the push handle (2) is provided with a number of keys (37), which keys (37) are electrically connected to a PLC.