CN210997866U

CN210997866U - Indoor wall grinding device for building

Info

Publication number: CN210997866U
Application number: CN201921701033.3U
Authority: CN
Inventors: 王金财
Original assignee: Shanghai Wangshi Construction Engineering Co ltd
Current assignee: Shanghai Wangshi Construction Engineering Co ltd
Priority date: 2019-10-12
Filing date: 2019-10-12
Publication date: 2020-07-14
Anticipated expiration: 2029-10-12

Abstract

The utility model discloses an indoor wall surface polishing device for building, which comprises a box body, the top end of a second spring is fixedly connected with the bottom surface of a first slide block, the bottom end of the second spring is fixedly connected with the top surface of a first dovetail block, the output end of a motor is fixedly connected with a rotating shaft, the other end of the rotating shaft penetrates through a barrel body and is fixedly connected with a polishing disc in a funnel, the other end of the second dovetail block is fixedly connected with the side wall of the barrel body, the top surface of the other end of a cross rod is symmetrically articulated with two connecting rods, a fourth spring is fixedly connected between two third slide blocks, the fourth spring is a tension spring, the cross rod is made of alloy steel materials, the model of a three-phase asynchronous motor is Y2-80M2-4S150, the device has various functions and strong practicability, wall surfaces can be polished while being fully polished, the trouble of manual hand-held polishing is reduced, the, the wall surface polishing device has the advantages that polishing treatment of the wall surface is facilitated, working efficiency is improved, polishing quality is high, and building use requirements are met.

Description

Indoor wall grinding device for building

Technical Field

The utility model relates to a building field, concretely relates to indoor wall grinding device for building.

Background

The purpose of building is to obtain the "space" that the building formed, be people in order to satisfy the social life needs, utilize the material technical means of mastering, and the artificial environment that utilizes certain scientific law, geomantic omen theory and aesthetic rule to create, in the building work progress, need carry out wall body to the building wall body of accomplishing of building and polish the processing, in order to reach the level and smooth of wall body surface, make things convenient for the wall to paint coating such as putty powder, current building wall body mode of polishing mostly adopts artifical handheld abrasive paper to rub to polish to the wall, it is inefficient to polish, it is not good to polish the effect, also adopt the machine to polish the wall body, but current polishing machine adjustability is relatively poor, can't fine polish to the corner, can't accurate location has polished to the wall face bellying, and adjust nimble convenient enough, can't satisfy the building user demand.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem existing in the prior art, the utility model provides an indoor wall grinding device for building.

The utility model discloses a realize through following technical scheme:

an indoor wall surface polishing device for buildings comprises a box body, wherein a plurality of universal wheels are symmetrically and fixedly connected to the bottom surface of the box body, a box door is hinged to the side wall of the box body, two first dovetail grooves are formed in the top surface of the box body, a first dovetail block is arranged in each first dovetail groove in a fitting sliding mode, a first spring is arranged in each first dovetail groove and is a compression spring, two vertical rods are symmetrically and fixedly connected to the top surface of each first dovetail block, sleeves are sleeved on the vertical rods in a fitting mode, the vertical rods are connected with the sleeves in a sliding mode, the cross sections of the vertical rods are square, the side walls of the sleeves are fixedly connected with hooks, the hooks are semicircular in shape, a first circular ring is rotatably arranged between the two hooks in a fitting mode, a funnel is fixedly connected to the inner side wall of the first circular ring, one end of the funnel is fixedly connected with a grinding ring, one side face of the grinding ring and, the top surface of the other first dovetail block is fixedly connected with a first barrel body, a first sliding block is attached and slides in the first barrel body, the top surface of the first sliding block is fixedly connected with a first sliding rod, the top end of the first sliding rod penetrates out of the first barrel body and is fixedly connected with a motor, the motor is connected with a controller through a circuit, the first sliding rod is slidably connected with the first barrel body, a second spring is arranged in the first barrel body, the top end of the second spring is fixedly connected with the bottom surface of the first sliding block, the bottom end of the second spring is fixedly connected with the top surface of the first dovetail block, the output end of the motor is fixedly connected with a rotating shaft, the other end of the rotating shaft penetrates into a funnel through the barrel body and is fixedly connected with a sanding disc, the sanding disc and the sanding ring are positioned on the same vertical plane, the rotating shaft is rotatably connected with the barrel body, two first sealing rings are attached and sleeved on the rotating shaft, and, the barrel body is sleeved with a second circular ring in a laminating manner, the barrel body is rotationally connected with the second circular ring, the barrel body is sleeved with two second sealing rings fixedly through glue, the two second sealing rings are respectively positioned on two sides of the second circular ring and are laminated with the side wall of the second circular ring, the peripheral wall of the barrel body is annularly provided with a plurality of through holes, the bottom end of the second circular ring is fixedly communicated with a vertical pipe, the through holes and the vertical pipe are positioned on the same vertical plane, the top surface of the box body is fixedly connected with a dust collector, the model of the dust collector is FC, one end of the dust collector is fixedly communicated with the box body, the dust collector is fixedly communicated with a corrugated hose through the glue, the other end of the corrugated hose is fixedly communicated with the bottom end of the vertical pipe through the glue, the bottom end of the barrel body is in threaded connection with a bolt, the top surface of, the threaded rod is fixedly connected with a limiting block, a threaded sleeve is sleeved on the threaded rod in a threaded manner, a barrel is sleeved on the outer wall of the threaded sleeve in a laminating manner, the threaded sleeve is rotatably connected with the barrel, a plurality of first sliding grooves are formed in the outer wall of the threaded sleeve in an annular manner, a stop block is fixedly connected in each first sliding groove, a second sliding block is arranged in each first sliding groove, one end of each second sliding block is fixedly connected with a second sliding rod, the other end of each second sliding rod penetrates through the stop block and is fixedly connected with a lug, each lug is semicircular in shape, each second sliding rod is slidably connected with the corresponding stop block, a plurality of grooves are formed in the inner wall of each barrel in an annular manner, each lug is arranged in each groove in a laminating manner, a third spring is arranged in each first sliding groove, one end of each third spring is fixedly connected with one end of each second sliding, a second dovetail groove is formed in the side wall of the cross rod, a second dovetail block is attached and slides in the second dovetail groove, the other end of the second dovetail block is fixedly connected with the side wall of the cylinder body, the top surface of the other end of the cross bar is symmetrically hinged with two connecting rods through pins, the top surface of the box body is fixedly connected with a vertical plate, the side wall of the vertical plate is provided with a second sliding chute, the side wall of the vertical plate is symmetrically provided with a plurality of first grooves from bottom to top, the first groove is conical, the first groove is communicated with the second sliding groove, two third sliding blocks are attached and slide in the second sliding groove, the other end of the third slide block is fixedly connected with a conical block which is arranged in the second chute, a fourth spring is fixedly connected between the two third slide blocks, the fourth spring is an extension spring, and the other end of the connecting rod penetrates into the second sliding groove and is hinged with the side wall of the third sliding block through a ball.

Preferably, the cross bar is made of alloy steel materials.

Preferably, the model of the three-phase asynchronous motor is Y2-80M2-4S 150.

Compared with the prior art, the beneficial effects of the utility model are that: the device has various functions and strong practicability, and can polish the wall corner while fully polishing the wall surface by arranging the first dovetail block, the first spring, the vertical rod, the sleeve, the clamping hook, the first circular ring, the funnel, the sanding ring, the barrel body, the first sliding block, the first sliding rod, the motor, the rotating shaft, the sanding disc, the first sealing ring, the second circular ring, the second sealing ring, the vertical pipe, the dust collector, the corrugated hose and the bolt, thereby reducing the trouble of manual hand-held polishing, improving the working efficiency, arranging the three-phase asynchronous motor, the threaded rod, the limiting block, the threaded sleeve, the barrel body, the stopping block, the second sliding rod, the convex block, the third spring, the transverse rod, the second dovetail block, the connecting rod, the vertical plate, the third sliding block, the conical block and the fourth spring, and being capable of accurately positioning the bulge of the wall surface, and being convenient for polishing the wall surface, the working efficiency and the polishing quality are improved, and the building use requirements are met.

Drawings

FIG. 1 is a block diagram of the structure of the present invention;

fig. 2 is a top view of the structure of the present invention;

fig. 3 is a partial enlarged view of the structure of the present invention.

In the figure: the device comprises a box body 1, a first dovetail block 2, a first spring 3, a vertical rod 4, a sleeve 5, a clamping hook 6, a first circular ring 7, a hopper 8, a sanding ring 9, a barrel body 10, a first barrel body 11, a first sliding block 12, a first sliding rod 13, a motor 14, a second spring 15, a rotating shaft 16, a sanding disc 17, a first sealing ring 18, a second circular ring 19, a second sealing ring 20, a vertical pipe 21, a dust collector 22, a corrugated hose 23, a bolt 24, a three-phase asynchronous motor 25, a threaded rod 26, a limiting block 27, a threaded sleeve 28, a barrel body 29, a stopping block 30, a second sliding block 31, a second sliding rod 32, a convex block 33, a third spring 34, a cross rod 35, a second dovetail block 36, a connecting rod 37, a vertical plate 38, a third sliding block 39, a conical block 40, a fourth spring 41, a first dovetail groove 1-1, a through hole 10-1, a first sliding groove 28-1, a groove 29-1, a second dovetail groove 35-1, a second sliding groove 38-1 and a first groove 38-2.

Detailed Description

The invention will be described in further detail with reference to the following detailed description and accompanying drawings:

as shown in fig. 1, 2 and 3, the indoor wall surface polishing device for the building comprises a box body 1, wherein a plurality of universal wheels are symmetrically and fixedly connected to the bottom surface of the box body 1, a box door is hinged to the side wall of the box body 1, two first dovetail grooves 1-1 are formed in the top surface of the box body 1, a first dovetail block 2 is arranged in each first dovetail groove 1-1 in a fitting and sliding mode, a first spring 3 is arranged in each first dovetail groove 1-1, each first spring 3 is a compression spring, two vertical rods 4 are symmetrically and fixedly connected to the top surface of each first dovetail block 2, a sleeve 5 is sleeved on each vertical rod 4 in a fitting mode, each vertical rod 4 is slidably connected with the sleeve 5, the cross section of each vertical rod 4 is square, a clamping hook 6 is fixedly connected to the side wall of the sleeve 5, each clamping hook 6 is semicircular, a first circular ring 7 is rotatably arranged between the two clamping hooks 6 in a fitting mode, and a funnel 8 is fixedly connected to, the grinding wheel is characterized in that one end of the funnel 8 is fixedly connected with a grinding ring 9, one side face of the grinding ring 9 is positioned on the same plane with the side wall of the box body 1, the other end of the funnel 8 is fixedly communicated with a barrel body 10, the top surface of the other first dovetail block 2 is fixedly connected with a first barrel body 11, a first slider 12 is arranged in the first barrel body 11 in a fitting sliding manner, the top surface of the first slider 12 is fixedly connected with a first slide bar 13, the top end of the first slide bar 13 penetrates out of the first barrel body 11 and is fixedly connected with a motor 14, the motor 14 is connected with a controller through a circuit, the first slide bar 13 is connected with the first barrel body 11 in a sliding manner, a second spring 15 is arranged in the first barrel body 11, the top end of the second spring 15 is fixedly connected with the bottom surface of the first slider 12, the bottom end of the second spring 15 is fixedly connected with the top surface of the first dovetail block 2, the output end of the motor 14 is fixedly connected with a, the grinding disc 17 and the grinding ring 9 are located on the same vertical plane, the rotating shaft 16 is rotatably connected with the barrel body 10, the rotating shaft 16 is fitted and sleeved with two first sealing rings 18, the two first sealing rings 18 are respectively located on two sides of the barrel body 10 and fixedly connected with the side walls of the barrel body 10 through glue, the barrel body 10 is fitted and sleeved with a second circular ring 19, the barrel body 10 is rotatably connected with the second circular ring 19, the barrel body 10 is fixedly sleeved with two second sealing rings 20 through glue, the two second sealing rings 20 are respectively located on two sides of the second circular ring 19 and are fitted with the side walls of the second circular ring 19, a plurality of through holes 10-1 are annularly formed in the peripheral wall of the barrel body 10, a vertical pipe 21 is fixedly communicated with the bottom end of the second circular ring 19, the through holes 10-1 and the vertical pipe 21 are located on the same vertical plane, a dust collector 22 is fixedly connected with the top surface of the box body 1, the type of the dust, the vacuum cleaner 22 is fixedly communicated with a corrugated hose 23 through glue, the other end of the corrugated hose 23 is fixedly communicated with the bottom end of a vertical pipe 21 through glue, a bolt 24 is connected with the bottom end of the barrel body 10 through threads, a three-phase asynchronous motor 25 is fixedly connected with the top surface of the box body 1, the three-phase asynchronous motor 25 is connected with a controller through a line, a threaded rod 26 is fixedly connected with the output end of the three-phase asynchronous motor 25, a limit block 27 is fixedly connected with the top end of the threaded rod 26, a threaded sleeve 28 is sleeved on the threaded rod 26 in a threaded manner, a barrel body 29 is sleeved on the outer wall of the threaded sleeve 28 in a fitting manner, the threaded sleeve 28 is rotatably connected with the barrel body 29, a plurality of first sliding grooves 28-1 are annularly formed in the outer wall of the threaded sleeve 28, a limit block, one end of the second sliding block 31 is fixedly connected with a second sliding rod 32, the other end of the second sliding rod 32 penetrates through the stop block 30 to be fixedly connected with a convex block 33, the convex block 33 is semicircular, the second sliding rod 32 is in sliding connection with the stop block 30, a plurality of grooves 29-1 are annularly formed in the inner wall of the cylinder body 29, the convex block 33 is attached to and arranged in the grooves 29-1, a third spring 34 is arranged in the first sliding groove 28-1, one end of the third spring 34 is fixedly connected with one end of the second sliding block 31, the other end of the third spring 34 is fixedly connected with the threaded sleeve 28, one end of the three-phase asynchronous motor 25 is fixedly connected with a cross rod 35, the side wall of the cross rod 35 is provided with a second dovetail groove 35-1, a second dovetail block 36 is attached to and slides in the second dovetail groove 35-1, and the other end of the second dovetail block 36 is fixedly connected with, the top surface of the other end of the cross bar 35 is symmetrically hinged with two connecting rods 37 through pins, the top surface of the box body 1 is fixedly connected with a vertical plate 38, the side wall of the vertical plate 38 is provided with a second sliding groove 38-1, the side wall of the vertical plate 38 is symmetrically provided with a plurality of first grooves 38-2 from bottom to top, the first groove 38-2 is tapered, the first groove 38-2 communicates with the second runner 38-1, two third sliding blocks 39 are arranged in the second sliding groove 38-1 in a fitting sliding manner, the other ends of the third sliding blocks 39 are fixedly connected with conical blocks 40, the conical block 40 is arranged in the second sliding groove 38-1, a fourth spring 41 is fixedly connected between the two third sliding blocks 39, the fourth spring 41 is an extension spring, and the other end of the connecting rod 37 penetrates into the second sliding groove 38-1 and is hinged to the side wall of the third sliding block 39 through a ball.

The cross bar 35 is made of alloy steel material.

The model number of the three-phase asynchronous motor 25 is Y2-80M2-4S 150.

The working principle is as follows: when the indoor wall needs to be polished, the device is pushed to enable the polishing ring 9 to be attached to a strong surface, then the device is connected with a power supply, the operation controller enables the three-phase asynchronous motor 25 and the motor 14 to start working, the motor 14 drives the rotating shaft 16 to rotate, the rotating shaft 16 drives the polishing disc 17 to polish the wall, meanwhile, the dust collector 22 starts working, the polished dust enters the funnel 8 and then enters the barrel body 10, then enters the vertical pipe 21 through the through hole 10-1, then enters the dust collector 22 through the corrugated hose 23, and finally is discharged into the box body 1, dust is effectively prevented from flying, the body health of workers is guaranteed, meanwhile, dust is convenient to collect, the output end of the three-phase asynchronous motor 25 drives the threaded rod 26 to rotate, the threaded rod 26 drives the threaded sleeve 28 to move, the threaded sleeve 28 drives the stop block 30 to move, and the stop block 30 drives the second sliding rod 32 to, the second slide bar 32 drives the projection 33 to move, the projection 33 drives the cylinder 29 to move, the cylinder 29 drives the second dovetail block 36 to move, the second dovetail block 36 drives the cross bar 35 to move, the cross bar 35 drives the motor 14 to move, the motor 14 drives the rotating shaft 16 to move, the rotating shaft 16 drives the cylinder 10 to move, the cylinder 10 drives the funnel 8 to move, the funnel 8 drives the first ring 7 to move, the first ring 7 drives the hook 6 to move, the hook 6 drives the sleeve 5 to slide on the vertical bar 4, the rotating shaft 16 drives the sanding disc 17 to move, the wall surface is moved and polished, when the sanding disc 17 touches the wall surface bulge, the sanding disc 17 contracts, the sanding disc 17 drives the rotating shaft 16 to move, the rotating shaft 16 drives the motor 14 to move, the motor 14 drives the cross bar 35 to move, the cross bar 35 drives the connecting bar 37 to move, the connecting bar 37 drives the third slide block 39 to slide in the second chute 38-1, the third slide block 39 drives the tapered block 40 to be inserted into the first groove 38-2, at this time, the third slide block 39 stops rising, so as to drive the connecting rod 37 to stop rising, the cross rod 35 stops rising to drive the second dovetail block 36 to stop rising, the second dovetail block 36 stops rising to stop rising to drive the cylinder 29, at this time, the three-phase asynchronous motor 25 drives the threaded rod 26 to rotate, the threaded rod 26 drives the threaded sleeve 28 to rotate, the cylinder 29 repeatedly beats the lug 33 to make the lug 33 do amplitude motion, the lug 33 drives the second slide rod 32 to slide, the second slide rod 32 drives the second slide block 31 to slide, the second slide block 31 repeatedly extrudes the third spring 34, the cross rod 35 stops rising to drive the motor 14 to stop rising, so as to indirectly stop rising the sanding disk 17 to sand the bulge, after the bulge is sanded, the sanding disk 17 moves to be flush with the wall surface again, the sanding disk 17 indirectly drives the connecting, the connecting rod 37 pulls the two third sliding blocks 39, the third sliding blocks 39 drive the conical block 40 to slide out of the first groove 38-2, at the moment, the third sliding blocks 39 slide in the second sliding grooves 38-1, the three-phase asynchronous motor 25 indirectly drives the grinding disc 17 to grind the wall surface, when the wall corner is ground, the volume of the funnel 8 cannot grind the wall corner, at the moment, the motor 14 stops working by operating the controller, then the bolt 24 is screwed down, the bolt 24 is screwed down to fix the barrel body 10 and the rotating shaft 16, then the motor 14 starts to work by operating the controller, the output end of the motor 14 drives the rotating shaft 16 to rotate, the rotating shaft 16 drives the barrel body 10 to rotate, the barrel body 10 drives the funnel 8 to rotate, the funnel 8 drives the grinding ring 9 to rotate, thereby grinding of the wall corner is realized, the complexity of manual grinding is reduced, after grinding is finished, the device is moved to grind other parts of the wall surface, after polishing, the controller is operated to stop the three-phase asynchronous motor 25 and the motor 14, then the dust collector 22 is closed, and the box door on the side wall of the box body 1 is opened discontinuously to clean dust in the box body 1.

The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides an indoor wall grinding device for building, includes box (1), a plurality of universal wheels of box (1) bottom surface symmetry fixedly connected with, box (1) lateral wall articulates there is chamber door, its characterized in that: the box body (1) is provided with two first dovetail grooves (1-1) on the top surface, a first dovetail block (2) is arranged in the first dovetail groove (1-1) in a fitting sliding manner, a first spring (3) is arranged in the first dovetail groove (1-1), the first spring (3) is a compression spring, two vertical rods (4) are symmetrically and fixedly connected to the top surface of the first dovetail block (2), a sleeve (5) is sleeved on the vertical rod (4) in a fitting manner, the vertical rods (4) are slidably connected with the sleeve (5), the cross section of each vertical rod (4) is square, the side wall of the sleeve (5) is fixedly connected with a clamping hook (6), the clamping hook (6) is semicircular in shape, a first circular ring (7) is rotationally arranged between the two clamping hooks (6) in a fitting manner, the inner side wall of the first circular ring (7) is fixedly connected with a funnel (8), one end of the funnel (8) is fixedly connected with a sand grinding ring (9), one side face of the sand grinding ring (9) and the side wall of the box body (1) are positioned on the same plane, the other end of the funnel (8) is fixedly communicated with a barrel body (10), the top surface of the other first dovetail block (2) is fixedly connected with a first barrel body (11), a first sliding block (12) is arranged in the first barrel body (11) in a matching sliding mode, the top surface of the first sliding block (12) is fixedly connected with a first sliding rod (13), the top end of the first sliding rod (13) penetrates out of the first barrel body (11) and is fixedly connected with a motor (14), the motor (14) is connected with a controller through a circuit, the first sliding rod (13) is slidably connected with the first barrel body (11), a second spring (15) is arranged in the first barrel body (11), the top end of the second spring (15) is fixedly connected with the bottom surface of the first sliding block (12), the bottom end of the second spring (15) is fixedly connected with the top surface of the, the output end of the motor (14) is fixedly connected with a rotating shaft (16), the other end of the rotating shaft (16) penetrates through the barrel body (10) and penetrates into the funnel (8) to be fixedly connected with a grinding disc (17), the grinding disc (17) and the grinding ring (9) are positioned on the same vertical plane, the rotating shaft (16) is rotatably connected with the barrel body (10), two first sealing rings (18) are attached to the rotating shaft (16), the two first sealing rings (18) are respectively positioned on two sides of the barrel body (10) and fixedly connected with the side wall of the barrel body through glue, a second ring (19) is attached to the barrel body (10), the barrel body (10) is rotatably connected with the second ring (19), two second sealing rings (20) are fixedly attached to the barrel body (10) through glue, the two second sealing rings (20) are respectively positioned on two sides of the second ring (19) and attached to the side wall of the second ring, the peripheral wall of the barrel body (10) is annularly opened with a plurality of through, the bottom fixing and communicating device is characterized in that a vertical pipe (21) is communicated with the bottom of the second circular ring (19), the through hole (10-1) and the vertical pipe (21) are located on the same vertical plane, a dust collector (22) is fixedly connected to the top surface of the box body (1), the model of the dust collector (22) is FC8348, one end of the dust collector (22) is fixedly communicated with the box body (1), the dust collector (22) is fixedly communicated with a corrugated hose (23) through glue, the other end of the corrugated hose (23) is fixedly communicated with the bottom of the vertical pipe (21) through glue, a bolt (24) is connected to the bottom of the barrel body (10) through threads, a three-phase asynchronous motor (25) is fixedly connected to the top surface of the box body (1), the three-phase asynchronous motor (25) is connected with a controller through a circuit, a threaded rod (26) is fixedly connected to the output end, the threaded rod (26) is sleeved with a threaded sleeve (28) in a threaded manner, the outer wall of the threaded sleeve (28) is sleeved with a barrel (29) in a fitting manner, the threaded sleeve (28) is rotatably connected with the barrel (29), a plurality of first sliding grooves (28-1) are annularly formed in the outer wall of the threaded sleeve (28), a stop block (30) is fixedly connected in each first sliding groove (28-1), a second sliding block (31) is arranged in each first sliding groove (28-1), one end of each second sliding block (31) is fixedly connected with a second sliding rod (32), the other end of each second sliding rod (32) penetrates through the stop block (30) and is fixedly connected with a convex block (33), each convex block (33) is semicircular in shape, each second sliding rod (32) is slidably connected with the stop block (30), a plurality of grooves (29-1) are annularly formed in the inner wall of the barrel (29), and the convex blocks (33) are arranged in the grooves (29, a third spring (34) is arranged in the first sliding groove (28-1), one end of the third spring (34) is fixedly connected with one end of a second sliding block (31), the other end of the third spring (34) is fixedly connected with a threaded sleeve (28), one end of a three-phase asynchronous motor (25) is fixedly connected with a cross rod (35), the side wall of the cross rod (35) is provided with a second dovetail groove (35-1), a second dovetail block (36) is arranged in the second dovetail groove (35-1) in a sliding manner in a fitting manner, the other end of the second dovetail block (36) is fixedly connected with the side wall of the barrel body (29), the top surface of the other end of the cross rod (35) is symmetrically hinged with two connecting rods (37) through pins, the top surface of the box body (1) is fixedly connected with a vertical plate (38), the side wall of the vertical plate (38) is provided with a second sliding groove (38-1), and the side wall of the vertical plate (38) is symmetrically, the shape of the first groove (38-2) is conical, the first groove (38-2) is communicated with the second sliding groove (38-1), two third sliding blocks (39) are arranged in the second sliding groove (38-1) in a fit sliding mode, the other end of each third sliding block (39) is fixedly connected with a conical block (40), each conical block (40) is arranged in the second sliding groove (38-1), a fourth spring (41) is fixedly connected between the two third sliding blocks (39), each fourth spring (41) is an extension spring, and the other end of the connecting rod (37) penetrates into the second sliding groove (38-1) and is hinged to the side wall of each third sliding block (39) through a ball.

2. The indoor wall surface grinding device for the building of claim 1, characterized in that: the cross rod (35) is made of alloy steel materials.

3. The indoor wall surface grinding device for the building of claim 1, characterized in that: the model of the three-phase asynchronous motor (25) is Y2-80M2-4S 150.