CN115008280A

CN115008280A - Outer wall surface polishing tool for cement painting of nuclear power plant

Info

Publication number: CN115008280A
Application number: CN202210397273.9A
Authority: CN
Inventors: 刘志军; 丁元明; 陈国春; 王长江; 林耀华
Original assignee: Hangzhou East Nuclear Energy Technology Co ltd; Zhejiang Donghe Power Equipment Engineering Co ltd
Current assignee: Hangzhou East Nuclear Energy Technology Co ltd; Zhejiang Donghe Power Equipment Engineering Co ltd
Priority date: 2022-04-15
Filing date: 2022-04-15
Publication date: 2022-09-06
Anticipated expiration: 2042-04-15
Also published as: CN115008280B

Abstract

The invention discloses an outer wall surface polishing tool for cement painting of a nuclear power plant, which relates to the technical field of wall surface polishing and comprises an installation seat and a lifting mechanism, wherein universal wheels are installed at the bottom of the installation seat, an auxiliary support frame is arranged outside the installation seat, an installation support is connected to the left side of the installation seat, and a steel wire rope is connected to the top of the installation support. The grinding trolley adopts the mutual matching arrangement of the components, so that the grinding trolley can move up and down on a grinding surface under the driving of the motor, the grinding efficiency is further improved, the grinding trolley is guaranteed to be uniformly ground, two guide cables are vertically fixed on a wall surface, the tension degree of the two guide cables is adjustable and convenient to use, the wire spool is connected with the grinding trolley to move up and down along the two guide cables for grinding, a main body material is made of carbon steel, the guide cables and the wire winding wire rope are made of stainless steel wires, the grinding heads of the grinding trolley are arranged in an up-and-down mode, and the two grinding heads are opposite in rotation direction, so that the reaction force on the trolley is reduced, and the vibration of the trolley is reduced.

Description

Outer wall surface polishing tool for cement painting of nuclear power plant

Technical Field

The invention relates to the technical field of wall surface polishing, in particular to a cement-painted outer wall surface polishing tool for a nuclear power plant.

Background

Nuclear power plant means with nuclear energy conversion heat energy for the steam that produces and supply the steam turbine to use, the steam turbine drives the generator again, has constituted the power plant that produces commercial electric power, and need carry out cement whitewash at the external surface during nuclear power factory building, and need polish the wall clean after whitewashing, consequently need polish equipment auxiliary work personnel and polish.

The outer wall surface grinding tool in the market often needs the assistance of labor force, has not only promoted working strength, still influences its machining efficiency simultaneously, can not freely control the position of polishing when polishing, leads to the low troublesome hard of quality of polishing, has consequently released the outer wall surface grinding tool that nuclear power factory building cement whitewashed.

Disclosure of Invention

The invention aims to provide a polishing tool for an outer wall surface painted by cement in a nuclear power plant, which aims to solve the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme: a grinding tool for the outer wall surface of a nuclear power plant for cement painting comprises a mounting seat and a lifting mechanism, wherein universal wheels are mounted at the bottom of the mounting seat, an auxiliary support frame is arranged on the outer side of the mounting seat, a mounting bracket is connected to the left side of the mounting seat, a steel wire rope is connected to the top of the mounting bracket, a bracket plate is connected to the top of the steel wire rope, the lifting mechanism is mounted on the surface of the mounting seat, a grinding mechanism is connected to the outer end of the lifting mechanism and comprises a steel wire rope guide rod, a base, a guide bracket, a pulley, a pressing roller, a limiting bracket, a pneumatic motor, a roller grinding head and a shell plate, the base is connected to the inner side of the steel wire rope guide rod, the guide bracket is mounted on the surface of the base, the pulley is arranged inside the guide bracket, the pressing roller is mounted on the other side of the base, and the base is internally provided with a limiting support, the inner side of the limiting support is connected with the pneumatic motor, the output end of the pneumatic motor is connected with the roller grinding head, and the outer shell plate is arranged outside the roller grinding head.

Further, hoist mechanism includes pneumatic gear motor, wire reel, steel wire guide cable, alignment jig, link, direction rim plate, spacing bolt and crown block, just pneumatic gear motor output is connected with the wire reel, the winding of wire reel surface has the steel wire guide cable, just steel wire guide cable one end external connection has the alignment jig, the alignment jig is inside to be provided with the link, just the link top is connected with spacing bolt, the crown block connect in the steel wire guide cable other end is outside.

Furthermore, the adjusting bracket penetrates through the inside of the connecting bracket and extends to the outer end, the connecting bracket is connected with the adjusting bracket in a sliding manner, and the connecting bracket is fixedly connected with the adjusting bracket through the limiting bolt.

Furthermore, the base is in transmission connection with the pneumatic speed reducing motor through the pulleys and the steel wire guide cable, and the pulleys are symmetrically distributed around the center of the base.

Furthermore, the roller grinding heads are in transmission connection with the limiting support through the pneumatic motor, two groups of roller grinding heads are arranged, and the directions of the two groups of roller grinding heads are opposite.

Furthermore, the bottom of the base is connected with a dust collecting mechanism, and a buckle mechanism is arranged outside the dust collecting mechanism.

Further, the dust collecting mechanism comprises a collecting bag, a filtering bag, an air pipe and a vacuum generator, the inner portion of the collecting bag is provided with the filtering bag, the bottom of the collecting bag is connected with the air pipe, and the bottom of the air pipe is connected with the vacuum generator.

Furthermore, the vacuum generator is communicated with the collecting bag through the air pipe, and the cross section of the filtering bag is of a rectangular structure.

Further, buckle mechanism includes reset spring, presses seat, connecting strip and tooth piece, just the reset spring other end is connected with press the seat, press the seat top and install the connecting strip, just the connecting strip surface is provided with the tooth piece.

Furthermore, the connecting strip passes through the tooth piece with the base block is connected, just the connecting strip passes through reset spring with collect bag elastic connection, just the connecting strip is equipped with two sets ofly altogether.

The invention provides an outer wall surface polishing tool for cement painting of a nuclear power plant, which has the following beneficial effects: according to the external wall surface polishing tool for cement painting of the nuclear power plant, the components are mutually matched, so that the polishing trolley can move up and down on a polished surface through the driving of a motor, the polishing efficiency is further improved, the polishing is guaranteed to be uniform, and the dust collecting mechanism is matched, so that dust in the wall surface polishing process can be collected, the splashing of the dust is reduced, the cleaning intensity of workers is reduced;

1. the installation seat, the steel wire rope and the installation support are arranged in a matched mode, two sections of steel wire rope flexible guide cables are adopted and fixedly installed on a wall surface, the tension degree is adjustable, the steel wire rope flexible guide cables are convenient to use, the installation support is close to the wall surface, the stability in working can be improved, meanwhile, universal wheels are arranged at the bottom of the installation seat, equipment can be convenient to transfer, an auxiliary support frame is additionally arranged, the auxiliary support frame is composed of an auxiliary frame, a hydraulic telescopic rod and a foot support, and the stability of the installation seat and a placing plane can be improved in working through the adjustable foot support.

2. The lifting mechanism is matched with the grinding mechanism, a steel wire guide rope is wound in a pulley on one surface of the base, the pneumatic speed reduction motor drives the wire spool to rotate, the wire spool drives the steel wire rope to move in a forward and reverse loop mode through friction force, the steel wire rope is fixed with the trolley, the loop motion of the steel wire rope drives the trolley to move up and down, and then the base is driven to move up and down along the steel wire rope to finish grinding.

3. According to the invention, through the arrangement of the grinding mechanism, the steel wire rope guide rod is additionally arranged outside the grinding mechanism for enhancing the stability during grinding, two groups of roller grinding heads are arranged inside the base, the grinding heads are cylindrical louver grinding heads with the length of 250mm and the diameter of 100mm, the upper and lower arrangement is adopted, the two grinding heads are oppositely turned, so that the reaction force to a trolley is reduced, the vibration of the trolley is reduced, the power is a pneumatic motor, the grinding heads are driven to rotate through a synchronous belt to grind the wall surface, and the reason for selecting the pneumatic motor is as follows: the working is safe, the temperature and climate are not affected, the structure is simple, and the operation is convenient.

4. According to the invention, the dust collecting mechanism and the polishing mechanism are matched with each other, the dust collecting mechanism is connected below the base through the buckle mechanism, dust falling during polishing is collected during polishing, fine dust in the dust collecting mechanism is separated out through the vacuum generator, and large-particle impurity crushed stones during polishing are filtered by the filter bag to reduce the influence of the crushed stones on the vacuum generator.

5. Through buckle mechanism's setting, reset spring embedding among this buckle mechanism is inside the both sides of collecting the bag to make it can extrude reset spring when pressing the seat through pressing the seat, and then make the connecting strip promote to the inboard, only need press the bottom that impels the base with the collection bag when needs installation and can accomplish the block fast, and promote when needs are dismantled to press the seat and can make the connecting strip move to the inboard, the tooth piece on connecting strip surface is separated with the base and is accomplished the dismantlement process promptly

Drawings

FIG. 1 is a schematic diagram of an overall three-dimensional structure of an external wall surface polishing tool for nuclear power plant cement painting according to the present invention;

FIG. 2 is an enlarged schematic structural view of the part A in FIG. 1 of the grinding tool for the outer wall surface of the nuclear power plant cement painted according to the present invention;

FIG. 3 is a schematic view of a three-dimensional structure of a base of the tool for polishing the outer wall surface of the nuclear power plant painted with cement of the invention;

FIG. 4 is a schematic diagram of a base plane structure of the tool for polishing the outer wall surface of the nuclear power plant cement painted according to the present invention;

FIG. 5 is a schematic perspective view of a limiting bracket of the tool for polishing the outer wall surface of the nuclear power plant;

FIG. 6 is a schematic structural view of a dust collecting mechanism of the tool for polishing the outer wall surface of the nuclear power plant painted with cement of the invention;

FIG. 7 is a schematic structural diagram of a fastening mechanism of the exterior wall surface polishing tool for nuclear power plant cement painting.

In the figure: 1. a mounting seat; 2. a universal wheel; 3. an auxiliary support frame; 4. mounting a bracket; 5. a wire rope; 6. a mounting plate; 7. a lifting mechanism; 701. a pneumatic gear motor; 702. a wire spool; 703. a steel wire guide cable; 704. an adjusting bracket; 705. a connecting frame; 706. a guide wheel disc; 707. a limit bolt; 708. a fixed pulley block; 8. a polishing mechanism; 801. a wire rope guide rod; 802. a base; 803. a guide bracket; 804. a pulley; 805. approaching to the roller; 806. a limiting bracket; 807. a pneumatic motor; 808. a roller grinding head; 809. an outer shell plate; 9. a dust collection mechanism; 901. a collection bag; 902. a filter bag; 903. an air tube; 904. a vacuum generator; 10. a buckle mechanism; 1001. a return spring; 1002. a pressing base; 1003. a connecting strip; 1004. a tooth block.

Detailed Description

Referring to fig. 1-7, the present invention provides a technical solution: a grinding tool for an outer wall surface of a nuclear power plant cement painting comprises a mounting seat 1 and a lifting mechanism 7, wherein universal wheels 2 are mounted at the bottom of the mounting seat 1, an auxiliary supporting frame 3 is arranged on the outer side of the mounting seat 1, a mounting bracket 4 is connected to the left side of the mounting seat 1, a steel wire rope 5 is connected to the top of the mounting bracket 4, a bracket plate 6 is connected to the top of the steel wire rope 5, the lifting mechanism 7 is mounted on the surface of the mounting seat 1, a grinding mechanism 8 is connected to the outer end of the lifting mechanism 7, the grinding mechanism 8 comprises a steel wire rope guide rod 801, a base 802, a guide bracket 803, a pulley 804, a pressing roller 805, a limiting bracket 806, a pneumatic motor 807, a roller grinding head 808 and a shell plate 809, the base 802 is connected to the inner side of the steel wire rope guide rod 801, the guide bracket 803 is mounted on the surface of the base 802, the pulley 804 is arranged inside the guide bracket 803, and the pressing roller 805 is mounted on the other side of the base 802, a limiting support 806 is arranged inside the base 802, the inner side of the limiting support 806 is connected with a pneumatic motor 807, the output end of the pneumatic motor 807 is connected with a roller grinding head 808, and an outer shell plate 809 is arranged outside the roller grinding head 808;

referring to fig. 1-2, the lifting mechanism 7 includes a pneumatic deceleration motor 701, a wire spool 702, a wire guide cable 703, an adjusting bracket 704, a connecting bracket 705, a guide wheel disc 706, a limit bolt 707 and a fixed pulley block 708, wherein the output end of the pneumatic deceleration motor 701 is connected with the wire spool 702, the wire guide cable 703 is wound on the surface of the wire spool 702, the adjusting bracket 704 is connected to the outside of one end of the wire guide cable 703, the connecting bracket 705 is arranged inside the adjusting bracket 704, the limit bolt 707 is connected to the top of the connecting bracket 705, the fixed pulley block 708 is connected to the outside of the other end of the wire guide cable 703, the adjusting bracket 704 penetrates through the inside of the connecting bracket 705 and extends to the outer end, the connecting bracket 705 is slidably connected with the adjusting bracket 704, and the connecting bracket 705 is fixedly connected with the adjusting bracket 704 through the limit bolt 707;

the operation is as follows, through the mutual cooperation arrangement of the mounting base 1, the steel wire rope 5 and the mounting bracket 4, two sections of steel wire rope 5 flexible guide cables are adopted, the flexible guide cables are fixedly mounted on the wall surface, the tension degree is adjustable, the use is convenient, the mounting bracket 4 is close to the wall surface, the stability in working can be further improved, meanwhile, the universal wheel 2 is arranged at the bottom of the mounting base 1, the transfer of equipment can be facilitated, the auxiliary supporting frame 3 is additionally arranged, the auxiliary supporting frame 3 is composed of an auxiliary frame, a hydraulic telescopic rod and a foot bracket, the stability of the mounting base 1 and a placing plane can be improved in working through the adjustable foot bracket, the mutual cooperation arrangement between the lifting mechanism 7 and the polishing mechanism 8 is adopted, the lifting mechanism 7 winds the steel wire guide cables 703 in a pulley 804 on one side of the base 802, the pneumatic speed reducing motor 701 drives the wire spool 702 to rotate, the spool 702 drives the steel wire guide cables 703 to move in a forward and backward loop through friction force, the steel wire guide rope 703 is fixed with the trolley, so that the steel wire guide rope 703 moves back and forth to drive the trolley to move up and down, further to drive the base 802 to move up and down along the steel wire rope 5 to finish the polishing work, the lifting mechanism 7 can improve the stability of the equipment during working through the arrangement of three groups of fixed pulleys, and the height of the connecting frame 705 can be adjusted through the arrangement of the adjusting frame 704, the connecting frame 705 and the limiting bolt 707, so that the device is suitable for adjusting the height of the guide wheel disc 706 on site and improving the applicability of the equipment;

referring to fig. 1, 3, 4 and 5, a base 802 is in transmission connection with a pneumatic speed reduction motor 701 through pulleys 804 and a steel wire guide cable 703, the pulleys 804 are symmetrically distributed about the center of the base 802, roller grinding heads 808 are in transmission connection with a limiting bracket 806 through a pneumatic motor 807, the roller grinding heads 808 are provided with two groups, and the directions of the two groups of roller grinding heads 808 are opposite;

the concrete operation is as follows, setting through grinding machanism 8, this grinding machanism 8's outside adds and is equipped with wire rope guide arm 801 and is used for strengthening the stability when polishing, and the inside two sets of roller bistrique 808 that are equipped with altogether of base 802, its bistrique is long 250mm, diameter 100 mm's cylinder shutter bistrique, adopt two upper and lower arrangements, two bistriques turn to on the contrary, with this reaction force that reduces the dolly, thereby reduce the vibrations of dolly, and power is pneumatic motor 807, it rotates the grinding wall face to drive the bistrique through the hold-in range, the reason of lectotype pneumatic motor 807: the working is safe, the temperature and climate are not influenced, the structure is simple, and the operation is convenient;

referring to fig. 1 and 6, a dust collecting mechanism 9 is connected to the bottom of the base 802, a fastening mechanism 10 is installed outside the dust collecting mechanism 9, the dust collecting mechanism 9 includes a collecting bag 901, a filtering bag 902, an air pipe 903 and a vacuum generator 904, the filtering bag 902 is installed inside the collecting bag 901, the air pipe 903 is connected to the bottom of the collecting bag 901, the vacuum generator 904 is connected to the bottom of the air pipe 903, the vacuum generator 904 is communicated with the collecting bag 901 through the air pipe 903, and the cross section of the filtering bag 902 is in a rectangular structure;

the concrete operation is as follows, through the mutually supporting setting between dust collection mechanism 9 and the grinding machanism 8, this dust collection mechanism 9 passes through buckle mechanism 10 to be connected in base 802 below, and the dust that drops when polishing is carried out to collection occasionally when polishing work goes on to separate out the inside tiny dust through vacuum generator 904, and filter the influence that reduces the rubble to vacuum generator 904 by crossing filter bag 902 when will polishing large granule impurity rubble.

Referring to fig. 1 and 7, the fastening mechanism 10 includes a return spring 1001, a pressing base 1002, a connecting bar 1003 and two tooth blocks 1004, the other end of the return spring 1001 is connected with the pressing base 1002, the top of the pressing base 1002 is provided with the connecting bar 1003, the surface of the connecting bar 1003 is provided with the tooth blocks 1004, the connecting bar 1003 is connected with the base 802 in a clamping manner through the tooth blocks 1004, the connecting bar 1003 is elastically connected with the collection bag 901 through the return spring 1001, and the connecting bar 1003 is provided with two groups;

the specific operation is as follows, through the arrangement of the fastening mechanism 10, the return spring 1001 in the fastening mechanism 10 is embedded inside both sides of the collecting bag 901, and the pressing seat 1002 can press the return spring 1001 when pressing the pressing seat 1002, so that the connecting strip 1003 is pushed to the inner side, when needing to be installed, the collecting bag 901 is only required to be pressed to push the bottom of the base 802 to quickly complete the clamping, and when needing to be disassembled, the pressing seat 1002 is pushed to move the connecting strip 1003 to the inner side, namely, the tooth blocks 1004 on the surface of the connecting strip 1003 are separated from the base 802 to complete the disassembling process.

To sum up, when the tool for polishing the outer wall surface painted by cement in a nuclear power plant is used, firstly, equipment is pushed to a working area, then, through the arrangement of an auxiliary support frame 3, the auxiliary support frame 3 consists of an auxiliary frame, a hydraulic telescopic rod and a foot support, through an adjustable foot support, the stability of a mounting seat 1 and a placing plane can be improved during working, then, a support plate 6 is fixedly arranged with the wall surface, the tension force of the support plate is adjustable by adopting the arrangement of two sections of steel wire ropes 5, then, through the arrangement of a lifting mechanism 7, the lifting mechanism 7 winds a steel wire guide rope 703 in a pulley 804 on one surface of a base 802, a pneumatic speed reducing motor 701 drives a wire reel 702 to rotate, the wire reel 702 drives the steel wire guide rope 703 to move in a forward and reverse loop direction through friction force, the steel wire guide rope 703 is fixed with a trolley, so that the trolley moves up and down through the loop movement of the steel wire guide rope 703, further driving the base 802 to move up and down along the steel wire rope 5 to finish the grinding work, the lifting mechanism 7 can improve the stability of the equipment during the work through the arrangement of three groups of fixed pulleys, and through the arrangement of the adjusting frame 704, the connecting frame 705 and the limiting bolt 707, the height of the connecting frame 705 can be adjusted, the lifting mechanism is suitable for adjusting the height of the guide wheel disc 706 on site, in the process, the pneumatic motor 807 is opened, the roller grinding head 808 is driven to rotate through the synchronous belt to grind the wall surface, the roller grinding head 808 is provided with two groups which are arranged up and down, the rotation directions of the two grinding heads are opposite, so that the reaction force on the trolley is reduced, the vibration of the trolley is reduced, then, the dust collecting mechanism 9 is arranged at the dust collecting mechanism 9, the dust collecting mechanism 9 is connected below the base 802 through the buckle mechanism 10, dust falling during the grinding work is collected, and fine dust in the inner part is separated out through the vacuum generator 904, and large granule impurity rubble when will polishing is filtered by filter bag 902 and is reduced the influence of rubble to vacuum generator 904, presses after the processing is accomplished at last to push and press seat 1002 and can make connecting strip 1003 move to the inboard, and the tooth piece 1004 and the base 802 separation on connecting strip 1003 surface accomplish the dismantlement process promptly.

Claims

1. The utility model provides an outer wall face burnisher that nuclear power factory building cement whitewashed, a serial communication port, including mount pad (1) and hoist mechanism (7), universal wheel (2) are installed to mount pad (1) bottom, just mount pad (1) outside is provided with auxiliary stay frame (3), mount pad (1) left side is connected with installing support (4), just installing support (4) top is connected with wire rope (5), just wire rope (5) top is connected with mounting panel (6), hoist mechanism (7) install in mount pad (1) surface, just hoist mechanism (7) outer end is connected with grinding machanism (8), grinding machanism (8) include wire rope guide arm (801), base (802), guide bracket (803), pulley (804), press close to gyro wheel (805), spacing support (806), pneumatic motor (807), Cylinder bistrique (808) and shell plate (809), just wire rope guide arm (801) inboard is connected with base (802), base (802) surface mounting have guide bracket (803), just inside arrangement of guide bracket (803) has pulley (804), press close to gyro wheel (805) install in base (802) another side, just base (802) internally mounted has spacing support (806), spacing support (806) inboard is connected with pneumatic motor (807), just pneumatic motor (807) output is connected with cylinder bistrique (808), cylinder bistrique (808) outside is provided with shell plate (809).

2. The tool of claim 1 for grinding the cement-painted exterior wall surface of a nuclear power plant, it is characterized in that the lifting mechanism (7) comprises a pneumatic speed reducing motor (701), a wire spool (702), a steel wire guide cable (703), an adjusting frame (704), a connecting frame (705), a guide wheel disc (706), a limit bolt (707) and a fixed pulley block (708), the output end of the pneumatic speed reducing motor (701) is connected with the wire spool (702), the surface of the wire spool (702) is wound with the steel wire guide rope (703), and the adjusting frame (704) is connected with the outside of one end of the steel wire guide cable (703), the connecting frame (705) is arranged in the adjusting frame (704), and the top of the connecting frame (705) is connected with the limit bolt (707), and the fixed pulley block (708) is connected to the outside of the other end of the steel wire guide cable (703).

3. The tool for grinding the cement-painted exterior wall surface of the nuclear power plant according to claim 2, wherein the adjusting frame (704) penetrates through the inside of the connecting frame (705) and extends to the outer end, the connecting frame (705) is slidably connected with the adjusting frame (704), and the connecting frame (705) is fixedly connected with the adjusting frame (704) through the limiting bolt (707).

4. The tool for grinding the outer wall surface of the cement-painted nuclear power plant according to claim 2, wherein the base (802) is in transmission connection with the pneumatic speed reduction motor (701) through the pulley (804) and the steel wire guide cable (703), and the pulley (804) is symmetrically distributed about the center of the base (802).

5. The tool for grinding the cement-painted exterior wall surface of the nuclear power plant as claimed in claim 1, wherein the roller grinding heads (808) are in transmission connection with the limiting bracket (806) through the pneumatic motor (807), two groups of roller grinding heads (808) are provided, and the directions of rotation of the two groups of roller grinding heads (808) are opposite.

6. The cement-plastered exterior wall grinding tool for the nuclear power plant as claimed in claim 1, wherein a dust collecting mechanism (9) is connected to the bottom of the base (802), and a fastening mechanism (10) is mounted on the outside of the dust collecting mechanism (9).

7. The tool for grinding the cement-painted exterior wall surface of the nuclear power plant according to claim 6, wherein the dust collecting mechanism (9) comprises a collecting bag (901), a filtering bag (902), an air pipe (903) and a vacuum generator (904), the filtering bag (902) is installed inside the collecting bag (901), the air pipe (903) is connected to the bottom of the collecting bag (901), and the vacuum generator (904) is connected to the bottom of the air pipe (903).

8. The tool for grinding the cement-painted exterior wall surface of the nuclear power plant as claimed in claim 7, wherein the vacuum generator (904) is communicated with the collection bag (901) through the air pipe (903), and the cross section of the filter bag (902) is rectangular.

9. The grinding tool for the cement-painted outer wall surface of the nuclear power plant as claimed in claim 6, wherein the fastening mechanism (10) comprises a return spring (1001), a pressing seat (1002), a connecting bar (1003) and a toothed block (1004), the other end of the return spring (1001) is connected with the pressing seat (1002), the connecting bar (1003) is installed on the top of the pressing seat (1002), and the toothed block (1004) is arranged on the surface of the connecting bar (1003).

10. The grinding tool for the cement-painted exterior wall of the nuclear power plant as claimed in claim 9, wherein the connecting strips (1003) are connected with the base (802) in a clamping mode through the tooth blocks (1004), the connecting strips (1003) are elastically connected with the collecting bag (901) through the return springs (1001), and the connecting strips (1003) are provided with two groups.