CN113305667A

CN113305667A - Auxiliary equipment for polishing sand paper

Info

Publication number: CN113305667A
Application number: CN202110611776.7A
Authority: CN
Inventors: 陈林发
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-06-02
Filing date: 2021-06-02
Publication date: 2021-08-27

Abstract

The invention discloses an auxiliary device for sanding, which relates to the field of buildings and comprises a device box, wherein a driving device is arranged in the device box, a handle is fixedly arranged on the top wall surface of the device box, a driving shaft is fixedly arranged at the output end of the driving device in the device box, a fixed disc is fixedly arranged at the bottom of the driving shaft, a clamping device is annularly arranged on the side wall of the fixed disc, when the sand paper polishing auxiliary equipment is used for polishing, the limiting ball at the position of the corresponding outer ring on the fixed disc is pressed by a user to be contracted by adjusting the warping plate through the matching of the supporting rod and the limiting spring, thereby make sand paper middle zone relax earlier and carry out outside tensile expansion again and tighten to make sand paper can carry out elastic regulation to sand paper when polishing the processing operation, avoid sand paper to polish and handle the condition that intensity face excessively concentrates and lead to sand paper life to reduce and take place.

Description

Auxiliary equipment for polishing sand paper

Technical Field

The invention relates to the field of buildings, in particular to an abrasive paper polishing auxiliary device.

Background

In the building construction process, can handle the wall around the operation of whitewashing the coating to the wall usually, can adopt abrasive paper cooperation machine to handle the wall usually, but, when using, because the dynamics of using is comparatively concentrated and the wall is harder difficult for taking place to change usually to lead to abrasive paper easily to produce the condition emergence of polishing intensity excessive concentration, thereby make abrasive paper's life greatly reduced, for this reason, we have provided an abrasive paper auxiliary assembly that polishes.

Disclosure of Invention

The invention aims to provide a sand paper grinding auxiliary device to solve the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides an abrasive paper auxiliary assembly that polishes, includes the equipment box, the inside of equipment box is provided with drive arrangement, fixed mounting has the handle on the top wall of equipment box, the inside drive arrangement's of equipment box output fixed mounting has the drive shaft, and the bottom fixed mounting of drive shaft has the fixed disk, the annular is provided with clamping device on the lateral wall of fixed disk, movable groove has been seted up to clamping device's inboard annular clearance, fixed mounting has the dead lever on the inboard intermediate position lateral wall of movable groove, the inside in movable groove is provided with adjusts the wane, and the circular form slotted hole has been seted up to the lateral wall intermediate position of adjusting the wane, adjusts the wane and cup joints on the dead lever through the activity of lateral wall slotted hole, adjust inside the torsional spring that is provided with of wane lateral wall slotted hole, adjust wane and dead lever and pass through the mutual swing joint of torsional spring.

Preferably, two sets of adjustment tanks have all been seted up to the position that corresponds the activity groove on the bottom wall of fixed disk, and two sets of adjustment tanks correspond with the both ends that correspond the position activity groove respectively each other, and the adjustment tank runs through the bottom of fixed disk and corresponds the position wall and communicate each other with the activity inslot portion, the position that the bottom of fixed disk corresponds the adjustment tank is provided with the restriction ball, adjust the equal fixed mounting of one end that the wane corresponds the adjustment tank and the one end that the restriction ball corresponds the adjustment tank and have branch, correspond the position two sets of branch is close to one end fixed mounting each other and has the restriction spring, and it is two sets of to correspond the position the restriction ball is close to one side each other and is provided with the regulation post, the bottom fixed mounting who adjusts the post has the auxiliary block.

Preferably, the limiting ball of the outer ring is close to the inner ring, a movable clamping groove is formed in the bottom end of the limiting ball, the movable clamping groove in the limiting ball of the inner ring is formed in the top end of the limiting ball close to the outer ring, movable clamping blocks are fixedly mounted at two ends of the adjusting column, the size of each movable clamping block is matched with the size of the inner side of each movable clamping groove, and the adjusting column is clamped in the movable clamping grooves in the two groups of limiting balls at the corresponding positions through the movable clamping blocks.

Preferably, two adjacent sets of auxiliary blocks are close to each other and are fixed with the connection deformation restriction piece on the lateral wall face, the clearance fixed mounting has the regulating block on the lateral wall of connection deformation restriction piece.

Preferably, the adjustment tank has been seted up in the clearance on the lateral wall of regulation post, the inside of supplementary piece is the cavity form, the inside clearance of supplementary piece is provided with interior ball, and the clearance between every adjacent two sets of interior balls increases from both ends to centre gradually, slope clearance fixed mounting has down the piece on the top lateral wall of interior ball, and down the piece is kept away from one end fixed mounting interior ball one end fixed mounting on the inboard adjacent two sets of adjustment tank clearance position of corresponding on the regulation post of supplementary piece.

Preferably, an inclined gap at one end of the inner ball, which is far away from the lower adjusting block, is fixedly provided with an upper adjusting block, the gap distance at one end of the upper adjusting block, which is far away from the inner ball, on the auxiliary block gradually narrows from two ends to the middle, the inner side of the auxiliary block is provided with a pull groove corresponding to the upper adjusting block, the end of the pull groove, which is far away from the upper adjusting block, is a spherical arc-shaped groove hole, the side wall of the middle position of the inner side of the pull groove is provided with a folding deformation groove, the folding deformation groove is a spherical annular groove hole, the wall surface of the pull groove, which is far away from the corresponding position of one end of the upper adjusting block, is fixedly provided with a pull rod, and one end of the pull rod, which is close to the upper adjusting block, is fixedly arranged on the upper adjusting block corresponding position.

Preferably, all seted up the auxiliary groove on the regional bottom wall between every two sets of adjacent pull grooves that are close to each other on every two sets of interior balls on the auxiliary block, the auxiliary groove is globular arc slotted hole, the position has seted up flutedly between the corresponding adjacent two sets of pull grooves of auxiliary block lateral wall bottom, and the recess is globular arc slotted hole, the recess inboard is provided with the kickball, and the kickball is inside hollow spherical massive, fixed mounting has the auxiliary rod on the kickball is close to the inboard one end lateral wall of recess, and kickball one end fixed mounting is kept away from to the auxiliary rod on the inboard corresponding position wall of recess.

Preferably, an outer groove is formed in the side wall of the heading ball in an annular gap, auxiliary cones are fixedly mounted on the side walls of the two ends of the outer side of the outer groove, two groups of auxiliary cones at corresponding positions form a triangular shape, an inner groove is formed in the inner side of the heading ball in a gap, and the inner groove and the outer groove are arranged in a staggered mode.

Compared with the prior art, the invention has the beneficial effects that:

(1) this abrasive paper auxiliary assembly that polishes, when abrasive paper passes through clamping device to be fixed on the fixed disk, abrasive paper can be restricted by the restriction ball of fixed disk bottom outer lane position, thereby make the abrasive paper intermediate position to go on flatly spreading and swell, when polishing the operation, exert pressure through the user and make the corresponding outer lane position restriction ball on the fixed disk adjust the wane through branch and restriction spring cooperation and shrink, thereby make the abrasive paper intermediate zone relax earlier and carry out outside tensile expansion again and tighten, thereby make abrasive paper can carry out elastic regulation to abrasive paper when polishing the processing operation, avoid abrasive paper to polish the condition emergence that the intensity face excessively concentrates on leading to abrasive paper life to reduce.

(2) This abrasive paper auxiliary assembly that polishes, when adjusting the wane when adjusting balance, the elasticity that adjusts corresponding position on the wane can slope the expansion to both sides through the elasticity that limits the spring to make and correspond regional abrasive paper service strength improvement between two sets of restriction balls in position, thereby reduce abrasive paper center and border position service strength, further improve abrasive paper's life.

(3) This abrasive paper auxiliary assembly that polishes, when two sets of restriction balls that correspond the position are adjusted, adjust post and supplementary piece can be carried out synchronous tensile processing, restrict through the adjustment tank on the regulation post, thereby make the inside interior ball of supplementary piece can receive the restriction of adjusting the post and adjusting the piece down and carry out ascending shrink and remove, thereby make interior ball drive the pull rod through adjusting the piece and carry out synchronous rebound, thereby make the pull rod drive and correspond the draw groove bottom wall in the position region and upwards pull, thereby make the inside top ball of corresponding position region recess extrude on bottom and the abrasive paper, thereby make the abrasive paper surface be interrupted and carry out the convex structure, thereby improve the great specification lug treatment effect of abrasive paper on to the article.

(4) This abrasive paper auxiliary assembly that polishes, when the knob contacts with the article, make the knob carry out the adaptation shrink through water jacket and inside groove through the article extrusion to make the inside supplementary awl of water jacket and article be interrupted the expansion contact, thereby make article surface lug can be better eliminate the processing.

(5) This abrasive paper auxiliary assembly that polishes, when supplementary piece and abrasive paper carried out complete horizontal laminating, supplementary groove on the supplementary piece can produce the adsorption to the abrasive paper surface, through both sides to the middle supplementary groove that gradually increases for supplementary groove is strengthened to the adsorption affinity of abrasive paper by both sides to the centre gradually, thereby improves the time that abrasive paper adsorbs the laminating and polishes, further improves abrasive paper efficiency of polishing.

Drawings

FIG. 1 is a schematic view of the overall structure of an auxiliary device for sanding according to the present invention;

FIG. 2 is a schematic view of the internal structure of the fixing plate according to the present invention;

FIG. 3 is a partial structural view of the fixing plate of the present invention;

FIG. 4 is a partial structural diagram of an auxiliary block according to the present invention;

fig. 5 is an enlarged view of a portion of the structure at a in fig. 4 according to the present invention.

In the figure: 1 equipment box, 2 handles, 3 drive shafts, 4 fixed disks, 5 clamping devices, 6 movable grooves, 7 fixed rods, 8 adjusting warping plates, 9 torsion springs, 10 adjusting grooves, 11 supporting rods, 12 limiting springs, 13 limiting balls, 14 adjusting columns, 15 auxiliary blocks, 16 movable clamping grooves, 17 movable clamping blocks, 18 connecting deformation limiting blocks, 19 adjusting blocks, 20 adjusting grooves, 21 inner balls, 22 downward adjusting blocks, 23 upward adjusting blocks, 24 pull grooves, 25 folding deformation grooves, 26 pull rods, 27 auxiliary grooves, 28 grooves, 29 heading balls, 30 auxiliary rods, 31 outer grooves, 32 auxiliary cones and 33 inner grooves.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-5, the present invention provides a technical solution: the utility model provides a sand paper auxiliary assembly that polishes, includes equipment box 1, and the inside of equipment box 1 is provided with drive arrangement, and fixed mounting has handle 2 on the top wall of equipment box 1, and equipment box 1 inside drive arrangement's output fixed mounting has drive shaft 3, and the bottom fixed mounting of drive shaft 3 has fixed disk 4, and the annular is provided with clamping device 5 on the lateral wall of fixed disk 4, and clamping device 5 is the technique that has been disclosed, and the no unnecessary repetition here.

Movable groove 6 has been seted up to clamping device 5's inboard annular gap, fixed mounting has dead lever 7 on the inboard intermediate position lateral wall of movable groove 6, the inside of movable groove 6 is provided with adjusts the wane 8, the circular form slotted hole has been seted up to the lateral wall intermediate position of adjusting the wane 8, it cup joints on dead lever 7 through the activity of lateral wall slotted hole to adjust the wane 8, it is provided with torsional spring 9 to adjust 8 lateral wall slotted holes insidely of wane, torsional spring 9 is for having disclosed the technique, it is not repeated here, and adjust wane 8 and dead lever 7 through torsional spring 9 swing joint each other.

Two groups of adjusting grooves 10 are formed in the wall surface of the bottom of the fixed disc 4 corresponding to the movable grooves 6, the two groups of adjusting grooves 10 correspond to two ends of the movable grooves 6 corresponding to the positions respectively, the adjusting grooves 10 penetrate through the wall surface of the bottom corresponding to the positions of the fixed disc 4 and are communicated with the inside of the movable grooves 6, limiting balls 13 are arranged at the positions, corresponding to the adjusting grooves 10, of the bottom of the fixed disc 4, the limiting balls 13 are hollow spherical blocks, supporting rods 11 are fixedly mounted at one ends, corresponding to the adjusting grooves 10, of the adjusting wane 8 and one ends, corresponding to the adjusting grooves 10, of the limiting balls 13, the two groups of supporting rods 11 are fixedly mounted near one ends of the limiting springs 12, the limiting springs 12 are the disclosed technology, repeated description is omitted, adjusting columns 14 are arranged at one sides, corresponding to the two groups of limiting balls 13, close to one side of each other, and auxiliary blocks 15 are fixedly mounted at the bottoms of the adjusting columns 14.

Two groups of limiting balls 13 at corresponding positions are arranged in an inclined mode from outside to inside in an initial state, the outer ring limiting ball 13 is close to the bottom end of the inner ring limiting ball 13 and is provided with a movable clamping groove 16, the movable clamping groove 16 on the inner ring limiting ball 13 is arranged at the top end of the inner ring limiting ball 13 close to the outer ring limiting ball 13, two ends of the adjusting column 14 are fixedly provided with movable clamping blocks 17, the size of each movable clamping block 17 is matched with the size of the inner side of each movable clamping groove 16, and the adjusting column 14 is clamped inside the movable clamping grooves 16 on the two groups of limiting balls 13 at corresponding positions through the movable clamping blocks 17.

Two adjacent sets of auxiliary blocks 15 are close to each other on the lateral wall fixed mounting have connect deformation restriction piece 18, connect deformation restriction piece 18 and be the arc cubic, connect deformation restriction piece 18 and be the convex cubic of rubber that can carry out the folding, connect on the lateral wall of deformation restriction piece 18 clearance fixed mounting have regulating block 19, regulating block 19 is circular metal cubic.

The side wall of the adjusting column 14 is provided with a gap with adjusting grooves 20, the inside of the auxiliary block 15 is hollow, the inner gap of the auxiliary block 15 is provided with inner balls 21, the inner balls 21 are spherical blocks, the gap between every two adjacent groups of inner balls 21 is gradually enlarged from two ends to the middle, the side wall of the top of the inner ball 21 is fixedly provided with a lower adjusting block 22 in an inclined gap manner, one end of the lower adjusting block 22, far away from one end, is fixedly arranged on the inner side of the auxiliary block 15 and corresponds to the gap position of the two adjacent groups of adjusting grooves 20 on the adjusting column 14, one end of the inner ball 21, far away from the lower adjusting block 22, is fixedly provided with an upper adjusting block 23 in an inclined gap manner, one end of the upper adjusting block 23, far away from the inner ball 21, is gradually narrowed from two ends to the middle on the auxiliary block 15, the inner side of the auxiliary block 15 is provided with a pull groove 24 corresponding to the position of the upper adjusting block 23, the pull groove 24 is, the folding deformation groove 25 is a spherical annular groove hole, a pull rod 26 is fixedly installed on the wall surface of the corresponding position of one end of the pull groove 24 far away from the upper adjusting block 23, and one end of the pull rod 26 close to the upper adjusting block 23 is fixedly installed on the corresponding position of the upper adjusting block 23.

Auxiliary groove 27 has all been seted up on the regional bottom wall between every two sets of kerfs 24 that are close to each other on every adjacent two sets of interior balls 21 on auxiliary block 15, auxiliary groove 27 is globular arc slotted hole, auxiliary block 15 lateral wall bottom corresponds between the adjacent two sets of kerfs 24 position and has seted up recess 28, recess 28 is globular arc slotted hole, recess 28 inboard is provided with top ball 29, top ball 29 is inside hollow globular block-shaped, top ball 29 is close to on the inboard one end lateral wall of recess 28 fixed mounting have auxiliary rod 30, auxiliary rod 30 keeps away from top ball 29 one end fixed mounting on the inboard corresponding position wall of recess 28.

An outer groove 31 is formed in the side wall of the top ball 29 in an annular gap mode, auxiliary cones 32 are fixedly mounted on the side walls of the two ends of the outer side of the outer groove 31, the two groups of auxiliary cones 32 in corresponding positions form a triangular shape, an inner groove 33 is formed in the inner side of the top ball 29 in a gap mode, and the inner groove 33 and the outer groove 31 are arranged in a staggered mode.

The working principle is as follows:

when the sand paper polishing machine is used, sand paper is fixed on the fixed disc 4 through the clamping device 5 on the fixed disc 4, the driving device inside the equipment box 1 is started, so that the driving shaft 3 drives the fixed disc 4 to rotate, and therefore the sand paper can polish objects.

When sand paper passes through clamping device 5 to be fixed on fixed disk 4, sand paper can be restricted by the restriction ball 13 of the 4 bottom outer lane positions of fixed disk, thereby make the sand paper intermediate position to go on flatly spreading and swell, when polishing the operation, exert pressure through the user and make the corresponding outer lane position restriction ball 13 on the fixed disk 4 adjust the wane 8 through branch 11 and restriction spring 12 cooperation and contract, thereby make sand paper intermediate zone relax earlier and carry out outside tensile expansion again and tighten, thereby make sand paper can carry out elastic regulation to sand paper when polishing the processing operation, avoid sand paper to polish the condition emergence that the processing intensity face excessively concentrates on and lead to sand paper life to reduce.

When adjusting the wane 8 when adjusting the balance, adjust two sets of restriction balls 13 that correspond the position on the wane 8 and can incline to both sides through the elasticity of restriction spring 12 and expand to make the sand paper service strength who corresponds regional improvement between two sets of restriction balls 13 in position, thereby reduce sand paper center and border position service strength, further improve sand paper's life.

When two sets of restriction balls 13 that correspond the position are adjusted, adjust post 14 and supplementary piece 15 and can be carried out synchronous tensile processing, it limits to adjust groove 20 on the post 14 to adjust, thereby make the inside interior ball 21 of supplementary piece 15 can receive the restriction of adjusting post 14 and lower regulating block 22 and carry out ascending shrink and move, thereby make interior ball 21 drive pull rod 26 through adjusting block 23 and carry out synchronous upward movement, thereby make pull rod 26 drive the pull groove 24 bottom wall in corresponding position region and carry out upwards pulling, thereby make the inside knob 29 of corresponding position region recess 28 extrude on bottom and the abrasive paper, thereby make the abrasive paper surface be interrupted and carry out convex structure, thereby improve the great specification lug treatment effect on the article of abrasive paper.

When the top ball 29 is contacted with the object, the top ball 29 is matched and contracted through the outer groove 31 and the inner groove 33 through the object extrusion, so that the auxiliary cone 32 inside the outer groove 31 is in intermittent expansion contact with the object, and the bumps on the surface of the object can be better eliminated.

When supplementary piece 15 and abrasive paper carried out complete horizontal laminating, supplementary groove 27 on supplementary piece 15 can produce the absorption to the abrasive paper surface, through both sides supplementary groove 27 that increases gradually to the centre for supplementary groove 27 increases gradually by both sides to the centre to the adsorption affinity of abrasive paper, thereby improves the time that abrasive paper adsorbs the laminating and polishes, further improves abrasive paper efficiency of polishing.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a sanding auxiliary assembly, includes equipment box (1), the inside of equipment box (1) is provided with drive arrangement, fixed mounting has handle (2) on the top wall of equipment box (1), the inside drive arrangement's of equipment box (1) output fixed mounting has drive shaft (3), and the bottom fixed mounting of drive shaft (3) has fixed disk (4), the annular is provided with clamping device (5), its characterized in that on the lateral wall of fixed disk (4): movable groove (6) have been seted up to the inboard annular gap of clamping device (5), fixed mounting has dead lever (7) on the inboard intermediate position lateral wall of movable groove (6), the inside of movable groove (6) is provided with adjusts wane (8), and the lateral wall intermediate position of adjusting wane (8) has seted up circular form slotted hole, adjusts wane (8) and cup joints on dead lever (7) through the activity of lateral wall slotted hole, it is provided with torsional spring (9) to adjust wane (8) lateral wall slotted hole inside, and it passes through torsional spring (9) interconnect to adjust wane (8) and dead lever (7).

2. A sanding assistance device as defined in claim 1, wherein: two groups of adjusting grooves (10) are respectively arranged on the bottom wall surface of the fixed disc (4) at positions corresponding to the movable grooves (6), the two groups of adjusting grooves (10) respectively correspond to the two ends of the movable grooves (6) at corresponding positions, the adjusting grooves (10) penetrate through the bottom wall surface of the fixed disc (4) at corresponding positions and are communicated with the inner parts of the movable grooves (6), a limiting ball (13) is arranged at the bottom of the fixed disc (4) corresponding to the position of the adjusting groove (10), one end of the adjusting wane (8) corresponding to the adjusting groove (10) and one end of the limiting ball (13) corresponding to the adjusting groove (10) are both fixedly provided with a supporting rod (11), one end of each two groups of the supporting rods (11) which are close to each other at the corresponding position is fixedly provided with a limiting spring (12), and adjusting columns (14) are arranged on one sides, close to each other, of the limiting balls (13) at the corresponding positions, and auxiliary blocks (15) are fixedly mounted at the bottoms of the adjusting columns (14).

3. A sanding assistance device as defined in claim 2, wherein: the outer lane restriction ball (13) are close to the inner circle restriction ball (13) bottom position has seted up movable clamping groove (16), and movable clamping groove (16) on inner circle restriction ball (13) are seted up and are close to outer lane restriction ball (13) top position in inner circle restriction ball (13), the equal fixed mounting in both ends of regulation post (14) has movable fixture block (17), and the size of movable fixture block (17) and the inboard size looks adaptation of movable clamping groove (16), and regulation post (14) are inside movable clamping groove (16) on two sets of restriction balls (13) of corresponding position through activity fixture block (17) buckle.

4. A sanding assistance device as defined in claim 2, wherein: two adjacent sets of auxiliary block (15) are close to each other on the lateral wall face fixed mounting connect deformation restriction piece (18), clearance fixed mounting has regulating block (19) on the lateral wall of connecting deformation restriction piece (18).

5. A sanding assistance device as defined in claim 3, wherein: adjustment tank (20) have been seted up to the clearance on the lateral wall of regulation post (14), the inside of supplementary piece (15) is the cavity form, the inside clearance of supplementary piece (15) is provided with interior ball (21), and the clearance between every adjacent two sets of interior ball (21) increases from both ends to the centre gradually, slope clearance fixed mounting has down-adjusting piece (22) on the top lateral wall of interior ball (21), and down-adjusting piece (22) are kept away from one end fixed mounting interior ball (21) one end fixed mounting and are corresponding on regulation post (14) the inboard adjacent two sets of adjustment tank (20) clearance position on supplementary piece (15).

6. A sanding assistance device as defined in claim 5, wherein: inner ball (21) are kept away from down and are transferred piece (22) one end slope clearance fixed mounting and have and transfer piece (23) on, and it is kept away from inner ball (21) one end and is gone up clearance distance from both ends to centre and narrow down gradually on supplementary piece (15) to transfer piece (23) on, supplementary piece (15) inboard is corresponding to transfer piece (23) position and has seted up pull groove (24), and pull groove (24) are for keeping away from and transfer piece (23) one end and be globular circular arc slotted hole, seted up folding shape on the inboard intermediate position lateral wall of pull groove (24) and become groove (25), folding shape becomes groove (25) and be globular annular slotted hole, pull rod (26) are kept away from on transfer piece (23) one end and are corresponded on the position wall fixed mounting have pull rod (26), and pull rod (26) are close to on transfer piece (23) one end fixed mounting on corresponding position transfer piece (23).

7. A sanding aid as defined in claim 5 or 6, wherein: auxiliary groove (27) have all been seted up on the regional bottom wall between every adjacent two sets of kerfs (24) that are close to each other on every two sets of interior balls (21) on auxiliary block (15), auxiliary groove (27) are globular arc slotted hole, position is seted up between corresponding adjacent two sets of kerfs (24) in auxiliary block (15) lateral wall bottom is fluted (28), and recess (28) are globular arc slotted hole, recess (28) inboard is provided with kickball (29), and kickball (29) are inside hollow spherical massive, fixed mounting has auxiliary rod (30) on kickball (29) is close to recess (28) inboard one end lateral wall, and kickball (29) one end fixed mounting is kept away from on recess (28) inboard corresponds the position wall in auxiliary rod (30).

8. A sanding assistance device as defined in claim 7, wherein: an outer groove (31) is formed in the side wall of the top ball (29) in an annular gap mode, auxiliary cones (32) are fixedly mounted on the side walls of the two ends of the outer side of the outer groove (31), two sets of auxiliary cones (32) in corresponding positions form a triangular shape, an inner groove (33) is formed in the inner side of the top ball (29) in a gap mode, and the inner groove (33) and the outer groove (31) are arranged in a staggered mode.