阅读说明：本技术 一种用于汽车维修的电动打磨设备 (A electronic equipment of polishing for auto repair ) 是由 黎清东 于 2021-08-03 设计创作，主要内容包括：本发明涉及一种用于汽车维修的电动打磨设备,包括主体、把手、第一电机和磨盘,还包括防护机构和辅助机构,所述防护机构包括防护板和两个连接组件,所述辅助机构包括清洁组件和两个密封组件,所述密封组件包括密封板、移动单元、拉板、限位块和充气单元,该用于汽车维修的电动打磨设备通过防护机构,实现了对磨盘遮挡的功能,使得打磨时产生的碎屑被集中在防护板内,从而使得碎屑不会飞溅到工作人员的身上,从而避免造成工作人员受伤的现象,从而提高了设备的可靠性,通过辅助机构,在设备闲置时,可以将磨盘保护起来,使得设备闲置时,外界的灰尘不会粘附在磨盘上,实现防护的目的,可以减缓磨盘被腐蚀的速度,从而提高了设备的可靠性。(The invention relates to an electric grinding device for automobile maintenance, which comprises a main body, a handle, a first motor, a grinding disc, a protective mechanism and an auxiliary mechanism, wherein the protective mechanism comprises a protective plate and two connecting components, the auxiliary mechanism comprises a cleaning component and two sealing components, the sealing components comprise a sealing plate, a moving unit, a pulling plate, a limiting block and an inflating unit, the electric grinding device for automobile maintenance realizes the function of shielding the grinding disc through the protective mechanism, so that scraps generated during grinding are concentrated in the protective plate, the scraps cannot splash onto the body of a worker, the phenomenon of injury of the worker is avoided, the reliability of the device is improved, the grinding disc can be protected through the auxiliary mechanism when the device is idle, and external dust cannot adhere to the grinding disc when the device is idle, the purpose of protection is realized, and the corrosion speed of the grinding disc can be reduced, so that the reliability of the equipment is improved.)

1. The utility model provides an electronic equipment of polishing for auto repair, includes main part (2), handle (1), first motor (3) and mill (4), handle (1) is connected with one side of main part (2), first motor (3) set up the bottom in main part (2), the below of main part (2) is equipped with the perforation, mill (4) set up the below of main part (2), the output shaft of first motor (3) passes the perforation and is connected with mill (4), the inside of main part (2) is equipped with PLC, first motor (3) are connected with PLC electricity, its characterized in that still includes protection machanism and complementary unit, protection machanism is connected with complementary unit;

the protection mechanism comprises a protection plate (5) and two connecting assemblies, the protection plate (5) is in a shape of a square circle, the protection plate (5) is sleeved on the main body (2), the inner side of the protection plate (5) is abutted to the periphery of the main body (2), the two connecting assemblies are arranged on two sides of the main body (2) respectively, each connecting assembly comprises a connecting rod (6) and a first spring (7), the connecting rod (6) is in an L shape, one end of the connecting rod (6) is connected with one side of the main body (2), the protection plate (5) is provided with two blind holes, the other ends of the two connecting rods (6) are arranged inside the two blind holes respectively, the connecting rod (6) is connected with the blind holes in a sliding manner, and two ends of the first spring (7) are connected with one end of the connecting rod (6) and the upper portion of the protection plate (5) respectively;

the auxiliary mechanism comprises a cleaning assembly and two sealing assemblies, the cleaning assembly is arranged below the main body (2), the sealing assemblies are arranged on the protection plate (5), and the sealing assemblies are connected with the cleaning assembly;

the sealing assembly comprises sealing plates (11), moving units, pull plates (13), limiting blocks (12) and an inflating unit, strip-shaped openings are formed in two sides of each protecting plate (5), one sides of the two sealing plates (11) are abutted against each other, the sealing plates (11) are arranged below the grinding disc (4), the other sides of the two sealing plates (11) penetrate through the two strip-shaped openings respectively, the two moving units are arranged on two sides of each protecting plate (5) respectively, the moving assemblies are connected with the lower portions of the sealing plates (11), the pull plates (13) are vertically arranged above the other sides of the sealing plates (11), the inflating unit is arranged on the protecting plates (5), the inflating unit is connected with one side, close to the corresponding sealing plate (5), of each pull plate (13), the inflating unit is connected with the corresponding cleaning assembly, one side of each limiting block (12) is connected with the top of the corresponding strip-shaped openings, the sealing plate is characterized in that a strip-shaped groove is formed in the upper portion of the sealing plate (11), the other side of the limiting block (12) is arranged inside the strip-shaped groove, the limiting block (12) is matched with the strip-shaped groove, and the limiting block (12) is connected with the inner wall of the strip-shaped groove in a sliding mode in a sealing mode.

2. The electric sanding device for vehicle maintenance according to claim 1, characterized in that the moving unit comprises a second motor (8), a gear (9) and a rack (10), the second motor (8) is arranged on the guard plate (5), the second motor (8) is in transmission connection with the gear (9), a groove is arranged below the sealing plate (11), the rack (10) is arranged inside the groove, the gear (9) is engaged with the rack (10), and the second motor (8) is electrically connected with the PLC.

3. The electric sanding device for automobile maintenance according to claim 1, characterized in that the air charging unit comprises an air bag (14), an air inlet pipe (16), a hose (17), two support plates and a plurality of second springs (15), wherein two sides of the air bag (14) are respectively connected with the periphery of the guard plate (5) and one side of the pulling plate (13) close to the guard plate (5), the two support plates are respectively connected with the inner walls of two sides of the air bag (14), the second springs (15) are uniformly arranged between the two support plates, one sides of the two support plates close to each other are respectively connected with two ends of the second springs (15), the air inlet pipe (16) is arranged above the air bag (14), one end of the hose (17) is connected with the lower part of the air bag (14), two sides of the guard plate (5) are respectively provided with a circular hole, and the other ends of the two hoses (17) respectively pass through the two circular holes, the other end and the clean subassembly of hose (17) are connected, all be equipped with the check valve in intake pipe (16) and hose (17), the check valve is connected with the PLC electricity.

4. The electric grinding device for automobile maintenance according to claim 3, characterized in that the cleaning assembly comprises a cleaning box (18), two elastic plates (24) and two driving units, the cleaning box (18) is annular in shape, the cleaning box (18) is arranged below the main body (2), the cleaning box (18) is arranged coaxially with the grinding disc (4), air outlet holes are uniformly arranged on the lower circumference of the cleaning box (18), one end of the hose (17) far away from the air bag (14) is communicated with the cleaning box (18), the elastic plates (24) are vertically arranged above the grinding disc (4), the two elastic plates (24) are symmetrically arranged about the axis of the grinding disc (4), and the two driving units are symmetrically arranged about the axis of the grinding disc (4).

5. The electric grinding device for automobile maintenance according to claim 4, characterized in that the driving unit comprises a driving shaft (20), two first bearings, two knocking units and a plurality of blades (19), wherein the two first bearings are respectively connected with the top and the bottom in the cleaning box (18), the periphery of the driving shaft (20) is connected with the inner ring of the first bearings, the blades (19) are arranged in the cleaning box (18), each blade (19) is circumferentially and uniformly arranged on the periphery of the driving shaft (20), two small holes are arranged below the cleaning box (18), one ends of the two driving shafts (20) respectively penetrate through the two small holes, one end of the driving shaft (20) is connected with the knocking units, and the two knocking units are symmetrically arranged about the axis of the driving shaft (20).

6. The electric grinding device for automobile maintenance according to claim 5, characterized in that the grinding unit comprises a fixed block (21), a grinding rod (23) and a third spring (22), one side of the fixed block (21) is connected with the driving shaft (20), the other side of the fixed block (21) is provided with a notch, one end of the grinding rod (23) is arranged inside the notch, the grinding rod (23) is matched with the notch, the grinding rod (23) is connected with the notch in a sealing and sliding manner, and two ends of the third spring (22) are respectively connected with one end of the grinding rod (23) and the inner wall of the notch.

Technical Field

The invention relates to the field of automobile equipment, in particular to electric polishing equipment for automobile maintenance.

Background

The electric grinding machine is a reciprocating electric polishing grinding machine (also known as a rasping machine) and is widely used for finish machining and surface polishing treatment in the mold industry.

Current electronic equipment of polishing is when idle, the mill exposes in the air, lead to steam and impurity in the air very easily to adhere to on the mill, thereby the speed that the mill was corroded has been accelerated, the live time of mill has been shortened, the practicality of current electronic equipment of polishing has been reduced, moreover, current electronic equipment of polishing is when polishing the car, can produce more piece, part piece is very easily splashes to staff's eye, thereby easily cause staff's eye injured phenomenon, thereby the security of current electronic equipment of polishing 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 electric grinding equipment for automobile maintenance is provided.

The technical scheme adopted by the invention for solving the technical problems is as follows: an electric polishing device for automobile maintenance comprises a main body, a handle, a first motor and a grinding disc, wherein the handle is connected with one side of the main body, the first motor is arranged at the bottom in the main body, a through hole is formed below the main body, the grinding disc is arranged below the main body, an output shaft of the first motor penetrates through the through hole to be connected with the grinding disc, a PLC is arranged in the main body, the first motor is electrically connected with the PLC, the electric polishing device further comprises a protection mechanism and an auxiliary mechanism, and the protection mechanism is connected with the auxiliary mechanism;

the protection mechanism comprises a protection plate and two connecting components, the protection plate is in a shape of a square circle, the protection plate is sleeved on the main body, the inner side of the protection plate abuts against the periphery of the main body, the two connecting components are arranged on two sides of the main body respectively, the connecting components comprise connecting rods and first springs, the connecting rods are in an L shape, one ends of the connecting rods are connected with one sides of the main body, two blind holes are formed in the protection plate, the other ends of the two connecting rods are arranged inside the two blind holes respectively, the connecting rods are connected with the blind holes in a sliding mode, and two ends of the first springs are connected with one ends of the connecting rods and the upper portion of the protection plate respectively;

the auxiliary mechanism comprises a cleaning assembly and two sealing assemblies, the cleaning assembly is arranged below the main body, the sealing assemblies are arranged on the protection plate, and the sealing assemblies are connected with the cleaning assembly;

the sealing assembly comprises a sealing plate, a moving unit, a pulling plate, a limiting block and an inflating unit, strip-shaped openings are formed in two sides of the protection plate, one sides of the two sealing plates are abutted against each other, the sealing plate is arranged below the grinding disc, the other sides of the two sealing plates penetrate through the two strip-shaped openings respectively, the two moving units are arranged on two sides of the protection plate respectively, the moving assembly is connected with the lower portion of the sealing plate, the pulling plate is vertically arranged above the other side of the sealing plate, the inflating unit is arranged on the protection plate and connected with one side, close to the protection plate, of the pulling plate, the inflating unit is connected with the cleaning assembly, one side of the limiting block is connected with the top in each strip-shaped opening, a strip-shaped groove is formed in the upper portion of the sealing plate, the other side of the limiting block is arranged inside the strip-shaped groove, and the limiting block is matched with the strip-shaped groove, the limiting blocks are connected with the inner wall of the strip-shaped groove in a sliding mode in a sealing mode.

Preferably, in order to drive the sealing plate to move, the moving unit comprises a second motor, a gear and a rack, the second motor is arranged on the protective plate and is in transmission connection with the gear, a groove is formed below the sealing plate, the rack is arranged inside the groove, the gear is meshed with the rack, and the second motor is electrically connected with the PLC.

Preferably, in order to realize the flow of air, the inflation unit comprises an air bag, an air inlet pipe, a hose, two support plates and a plurality of second springs, wherein the two sides of the air bag are respectively connected with the periphery of the protection plate and one side, close to the protection plate, of the pulling plate, the two support plates are respectively connected with the inner walls of the two sides of the air bag, the second springs are uniformly arranged between the two support plates, one sides, close to each other, of the two support plates are respectively connected with the two ends of the second springs, the air inlet pipe is arranged above the air bag, one end of the hose is connected with the lower portion of the air bag, the two sides of the protection plate are respectively provided with a round hole, the other ends of the two hoses respectively penetrate through the two round holes, the other end of the hose is connected with the cleaning assembly, one-way valves are arranged in the air inlet pipe and the hose, and the one-way valves are electrically connected with the PLC.

Preferably, in order to realize the function of cleaning the mill, the cleaning assembly comprises a cleaning box, two elastic plates and two driving units, the cleaning box is annular in shape and is arranged below the main body, the cleaning box and the mill are coaxially arranged, air outlet holes are uniformly formed in the circumferential direction of the lower portion of the cleaning box, one end, far away from the air bag, of the hose is communicated with the cleaning box, the elastic plates are vertically arranged above the mill, the two elastic plates are symmetrically arranged relative to the axis of the mill, and the two driving units are symmetrically arranged relative to the axis of the mill.

Preferably, in order to provide power, the driving unit comprises a driving shaft, two first bearings, two knocking units and a plurality of fan blades, the two first bearings are respectively connected with the top and the bottom in the cleaning box, the periphery of the driving shaft is connected with the inner ring of the first bearings, the fan blades are arranged in the cleaning box, the peripheries of the fan blades are uniformly arranged on the periphery of the driving shaft, two small holes are formed in the lower portion of the cleaning box, one ends of the two driving shafts penetrate through the two small holes respectively, one ends of the driving shafts are connected with the knocking units, and the two knocking units are symmetrically arranged about the axis of the driving shaft.

Preferably, in order to achieve the purpose of knocking the elastic plate, the knocking unit comprises a fixed block, a knocking rod and a third spring, one side of the fixed block is connected with the driving shaft, a notch is formed in the other side of the fixed block, one end of the knocking rod is arranged inside the notch, the knocking rod is matched with the notch, the knocking rod is connected with the notch in a sealing and sliding mode, and two ends of the third spring are respectively connected with one end of the knocking rod and the inner wall of the notch.

The invention has the advantages that the electric grinding equipment for automobile maintenance realizes the function of shielding the grinding disc through the protective mechanism, so that the scraps generated during grinding are concentrated in the protective plate, so that the scraps can not splash onto the body of the worker, thereby avoiding the injury of the worker, improving the reliability of the equipment, when the equipment is idle, the grinding disc can be protected, so that when the equipment is idle, external dust can not be adhered to the grinding disc, the protection purpose is realized, can slow down the corrosion speed of the grinding disc, thereby improving the reliability of the equipment, this complementary unit can also realize the function of clearance mill, has guaranteed the clean and tidy degree of mill, and through the clean mill of two kinds of different forms, has promoted clear effect, and the practicality is higher.

Drawings

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

FIG. 1 is a schematic structural view of an electric sanding apparatus for vehicle service of the present invention;

FIG. 2 is a schematic structural view of a seal assembly of the present invention for use in an electric sanding apparatus for vehicle service;

FIG. 3 is an enlarged view of portion A of FIG. 1;

fig. 4 is a schematic structural view of a striking unit of the electric sanding apparatus for automobile repair according to the present invention;

in the figure: 1. the handle, 2, the main body, 3, the first motor, 4, the grinding disc, 5, the protection plate, 6, the connecting rod, 7, the first spring, 8, the second motor, 9, the gear, 10, the rack, 11, the sealing plate, 12, the limiting block, 13, the pulling plate, 14, the air bag, 15, the second spring, 16, the air inlet pipe, 17, the hose, 18, the cleaning box, 19, the fan blade, 20, the driving shaft, 21, the fixing block, 22, the third spring and 23, the knocking rod.

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, an electric polishing device for automobile maintenance comprises a main body 2, a handle 1, a first motor 3 and a grinding disc 4, wherein the handle 1 is connected with one side of the main body 2, the first motor 3 is arranged at the bottom in the main body 2, a through hole is arranged below the main body 2, the grinding disc 4 is arranged below the main body 2, an output shaft of the first motor 3 passes through the through hole to be connected with the grinding disc 4, a PLC is arranged in the main body 2, the first motor 3 is electrically connected with the PLC, and the electric polishing device further comprises a protection mechanism and an auxiliary mechanism, and the protection mechanism is connected with the auxiliary 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 an electronic equipment of polishing for auto repair passes through protection machanism, the function of sheltering from mill 4 has been realized, make the piece that produces when polishing concentrated in guard plate 5, thereby make the piece can not splash on one's body of staff, thereby avoid causing staff's injured phenomenon, thereby the reliability of equipment has been improved, through complementary unit, when equipment is idle, can protect mill 4, make equipment when idle, external dust can not adhere on mill 4, realize the purpose of protection, can slow down mill 4 by the speed of corruption, thereby the reliability of equipment has been improved.

As shown in fig. 1, the protection mechanism includes a protection plate 5 and two connection assemblies, the protection plate 5 is in a shape of a square-circle, the protection plate 5 is sleeved on the main body 2, the inner side of the protection plate 5 abuts against the periphery of the main body 2, the two connection assemblies are respectively arranged on two sides of the main body 2, each connection assembly includes a connection rod 6 and a first spring 7, the connection rod 6 is in an L shape, one end of the connection rod 6 is connected with one side of the main body 2, the protection plate 5 is provided with two blind holes, the other ends of the two connection rods 6 are respectively arranged in the two blind holes, the connection rod 6 is in sliding connection with the blind holes, and two ends of the first spring 7 are respectively connected with one end of the connection rod 6 and the upper side of the protection plate 5;

when needs use mill 4, control complementary unit work, make mill 4 expose, the place that needs of guard plate 5 and car were polished again supports and leans on, it removes to the direction that is close to the car to drive main part 2 again, make mill 4 can support with the car and lean on, make main part 2 and guard plate 5 take place relative movement, compress first spring 7, shelter from mill 4 through guard plate 5, make the piece that produces when polishing concentrated in guard plate 5, thereby make the piece can not splash to staff on one's body, thereby avoid causing staff's injured phenomenon, thereby the reliability of equipment has been improved.

As shown in fig. 2 to 4, the auxiliary mechanism includes a cleaning assembly disposed below the main body 2 and two sealing assemblies disposed on the shielding plate 5, the sealing assemblies being connected to the cleaning assembly;

the sealing assembly comprises sealing plates 11, moving units, pull plates 13, limiting blocks 12 and inflating units, strip-shaped openings are formed in two sides of a protection plate 5, one sides of the two sealing plates 11 are abutted against each other, the sealing plates 11 are arranged below a grinding disc 4, the other sides of the two sealing plates 11 penetrate through the two strip-shaped openings respectively, the two moving units are arranged on two sides of the protection plate 5 respectively, the moving assemblies are connected with the lower portions of the sealing plates 11, the pull plates 13 are vertically arranged above the other sides of the sealing plates 11, the inflating units are arranged on the protection plate 5, the inflating units are connected with one sides, close to the protection plate 5, of the pull plates 13, the inflating units are connected with a cleaning assembly, one sides of the limiting blocks 12 are connected with the tops in the strip-shaped openings, strip-shaped grooves are formed in the upper portions of the sealing plates 11, and the other sides of the limiting blocks 12 are arranged inside the strip-shaped grooves, stopper 12 matches with the bar groove, stopper 12 and the sealed sliding connection of the inner wall in bar groove.

When the grinding disc 4 is needed, the moving unit can be controlled to work, the two sealing plates 11 can be moved towards the direction far away from each other, so that the grinding disc 4 is exposed, the grinding work is convenient to carry out, when the sealing plates 11 are moved, the pull plate 13 can be driven to move towards the direction far away from the protection plate 5, so that the inflating unit works, when the grinding disc 4 is not needed after the grinding is finished, the moving unit can be controlled to work, so that the two sealing plates 11 are moved towards the direction close to each other, so that the pull plate 13 is moved towards the direction close to the protection plate 5, the cleaning assembly is driven to work through the inflating unit, the function of cleaning the grinding disc 4 is realized, when the two sealing plates 11 are moved to be abutted against each other, the moving unit is controlled to stop working, so that the grinding disc 4 is shielded by the two sealing plates 11, when the equipment is idle, external dust cannot adhere to the grinding disc 4, and the purpose of protection is realized, the speed of the grinding disc 4 being corroded can be slowed down, thereby improving the reliability of the equipment.

Preferably, in order to drive the sealing plate 11 to move, the moving unit comprises a second motor 8, a gear 9 and a rack 10, the second motor 8 is arranged on the protective plate 5, the second motor 8 is in transmission connection with the gear 9, a groove is arranged below the sealing plate 11, the rack 10 is arranged inside the groove, the gear 9 is meshed with the rack 10, and the second motor 8 is electrically connected with the PLC.

Preferably, in order to realize the flow of air, the inflation unit comprises an air bag 14, an air inlet pipe 16, a hose 17, two struts and a plurality of second springs 15, the two sides of the air bag 14 are respectively connected with the periphery of the protection plate 5 and one side of the pulling plate 13 close to the protection plate 5, the two support plates are respectively connected with the inner walls of the two sides of the air bag 14, each second spring 15 is uniformly arranged between the two support plates, the mutually close sides of the two support plates are respectively connected with the two ends of the second spring 15, the air inlet pipe 16 is arranged above the air bag 14, one end of the hose 17 is connected with the lower part of the air bag 14, two sides of the protection plate 5 are provided with round holes, the other ends of the two hoses 17 respectively penetrate through the two round holes, the other end of hose 17 is connected with clean subassembly, all be equipped with the check valve in intake pipe 16 and the hose 17, the check valve is connected with the PLC electricity.

When the grinding disc 4 is needed to be used, the second motor 8 can be controlled to be started to drive the gear 9 to rotate, the sealing plates 11 can be moved through the meshing between the gear 9 and the rack 10, the two sealing plates 11 can be moved towards the direction away from each other, so that the grinding disc 4 is exposed and grinding work is facilitated, when the sealing plates 11 are moved, the pull plates 13 can be driven to move towards the direction away from the protection plate 5, the second springs 15 are stretched, external air can enter the air bags 14 through the air inlet pipes 16, when the grinding disc 4 is not needed after grinding is finished, the second motor 8 can be controlled to rotate reversely, so that the two sealing plates 11 can be moved towards the direction close to each other, the pull plates 13 can be moved towards the direction close to the protection plate 5, the air bags 14 are squeezed, the air in the air bags 14 can be led into the cleaning boxes 18, the function of cleaning the grinding disc 4 is realized, when the two sealing plates 11 are moved to be abutted against each other, the second motor 8 is controlled to stop working, so that the grinding disc 4 is shielded by the two sealing plates 11, when the equipment is idle, external dust cannot be adhered to the grinding disc 4, the purpose of protection is realized, the corrosion speed of the grinding disc 4 can be reduced, and the reliability of the equipment is improved.

Preferably, in order to realize the function of cleaning the grinding disc 4, the cleaning assembly comprises a cleaning box 18, two elastic plates 24 and two driving units, the cleaning box 18 is annular, the cleaning box 18 is arranged below the main body 2, the cleaning box 18 and the grinding disc 4 are coaxially arranged, air outlet holes are uniformly formed in the circumferential direction below the cleaning box 18, one end, away from the air bag 14, of the hose 17 is communicated with the cleaning box 18, the elastic plates 24 are vertically arranged above the grinding disc 4, the two elastic plates 24 are symmetrically arranged relative to the axis of the grinding disc 4, and the two driving units are symmetrically arranged relative to the axis of the grinding disc 4.

Preferably, in order to provide power, the driving unit comprises a driving shaft 20, two first bearings, two knocking units and a plurality of fan blades 19, the two first bearings are respectively connected with the top and the bottom in the cleaning box 18, the periphery of the driving shaft 20 is connected with the inner ring of the first bearings, the fan blades 19 are arranged in the cleaning box 18, the fan blades 19 are uniformly arranged on the periphery of the driving shaft 20 in the circumferential direction, two small holes are formed in the lower portion of the cleaning box 18, one ends of the two driving shafts 20 respectively penetrate through the two small holes, one ends of the driving shafts 20 are connected with the knocking units, and the two knocking units are symmetrically arranged around the axis of the driving shaft 20.

Preferably, for the purpose of knocking the elastic plate 24, the knocking unit includes a fixed block 21, a knocking rod 23 and a third spring 22, one side of the fixed block 21 is connected to the driving shaft 20, the other side of the fixed block 21 is provided with a notch, one end of the knocking rod 23 is disposed inside the notch, the knocking rod 23 is matched with the notch, the knocking rod 23 is connected with the notch in a sealing and sliding manner, and two ends of the third spring 22 are respectively connected with one end of the knocking rod 23 and the inner wall of the notch.

After air in the air bag 14 enters the cleaning box 18 through the hose 17, the air can be sprayed out from the air outlet, so that the function of blowing air to the grinding disc 4 for removing dust is realized, the scraps adhered to the grinding disc 4 can be blown off under the action of air flow, so that the function of cleaning the grinding disc 4 is realized, when the air enters the cleaning box 18 from the hose 17, the fan blades 19 can be driven to rotate, the driving shaft 20 can rotate, the third spring 22 can be stretched under the action of centrifugal force, so that the knocking rod 23 can be contacted with the elastic plate 24 when the knocking rod 23 moves towards the direction far away from the driving shaft 20, so that the operation of knocking the elastic plate 24 can be interrupted through the rotation of the knocking rod 23, the elastic plate 24 vibrates, the grinding disc 4 vibrates, the scraps adhered to the grinding disc 4 can be shaken off, and the cleaning effect is improved, the practicality is higher, when not having the air admission to clean in the box 18, drive shaft 20 does not rotate, strikes pole 23 and then can not receive centrifugal force, thereby under the effect of the restoring force of third spring 22, make strike pole 23 to the direction removal that is close to drive shaft 20, when mill 4 rotates, can make strike pole 23 can not take place the contact with elastic plate 24, thereby can reduce the degree that elastic plate 24 received wearing and tearing, thereby can prolong elastic plate 24's life, the practicality is higher.

When needs use mill 4, control complementary unit work, make mill 4 expose, the place that needs of guard plate 5 and car were polished again supports and leans on, it removes to the direction that is close to the car to drive main part 2 again, make mill 4 can support with the car and lean on, make main part 2 and guard plate 5 take place relative movement, compress first spring 7, shelter from mill 4 through guard plate 5, make the piece that produces when polishing concentrated in guard plate 5, thereby make the piece can not splash to staff on one's body, thereby avoid causing staff's injured phenomenon, thereby the reliability of equipment has been improved. When the grinding disc 4 is needed, the moving unit can be controlled to work, the two sealing plates 11 can be moved towards the direction far away from each other, so that the grinding disc 4 is exposed, the grinding work is convenient to carry out, when the sealing plates 11 are moved, the pull plate 13 can be driven to move towards the direction far away from the protection plate 5, so that the inflating unit works, when the grinding disc 4 is not needed after the grinding is finished, the moving unit can be controlled to work, so that the two sealing plates 11 are moved towards the direction close to each other, so that the pull plate 13 is moved towards the direction close to the protection plate 5, the cleaning assembly is driven to work through the inflating unit, the function of cleaning the grinding disc 4 is realized, when the two sealing plates 11 are moved to be abutted against each other, the moving unit is controlled to stop working, so that the grinding disc 4 is shielded by the two sealing plates 11, when the equipment is idle, external dust cannot adhere to the grinding disc 4, and the purpose of protection is realized, the speed of the grinding disc 4 being corroded can be slowed down, thereby improving the reliability of the equipment.

Compared with the prior art, the electric grinding equipment for automobile maintenance realizes the function of shielding the grinding disc 4 through the protective mechanism, so that the scraps generated during grinding are concentrated in the protective plate 5, so that the scraps can not splash onto the body of the worker, thereby avoiding the injury of the worker, improving the reliability of the equipment, when the equipment is idle, the grinding disc 4 can be protected, so that when the equipment is idle, external dust can not be adhered to the grinding disc 4, the purpose of protection is realized, the corrosion speed of the grinding disc 4 can be reduced, thereby improving the reliability of the equipment, this complementary unit can also realize clearing up the function of mill 4, has guaranteed the clean and tidy degree of mill 4, and through two kinds of different forms clean mill 4, has promoted clear effect, and the practicality is higher.

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.