CN219465668U - Inside corner telescopic type polishing dust cover - Google Patents

Abstract

The utility model provides a telescopic internal corner polishing dust cover which comprises a dust cover body, wherein the dust cover body is fixedly connected with a motor of a polishing machine and covered on a polishing piece of the polishing machine, at least one internal corner assembly welding piece is arranged on the dust cover body, the internal corner assembly welding piece is connected with the dust cover body in a sliding manner along the direction from the edge of the dust cover body to the center of the dust cover body, and when the internal corner assembly welding piece slides towards the center of the dust cover body, an opening for exposing the edge of the polishing piece is formed between the edge of the internal corner assembly welding piece and the edge of the dust cover body; the dust hood body is communicated with a dust collection pipe. The utility model sets the internal corner as a sliding telescopic action part, is convenient and efficient to use, and can realize the polishing of walls and floors without dead angles.

Description

Inside corner telescopic type polishing dust cover

Technical Field

The utility model relates to a work part of a building polisher, in particular to an inside corner telescopic polishing dust cover.

Background

The phenomenon of concrete surface protrusion caused by curtain and unstable formwork installation due to slurry leakage often occurs in the building industry. In order to achieve a certain flatness and roughness of the concrete surface, it is necessary to polish the concrete surface with a polisher. In order to avoid environmental pollution caused by polishing and ensure operation safety, a dust cover is usually arranged on the head of a polishing machine. The dust cover is divided into a semi-closed type dust cover and a fully-closed type dust cover, when the corner part is polished, the internal corner of the fully-closed type dust cover can be detached, and thus the polishing disc is not blocked by the dust cover and is directly contacted with the corner, so that dead-angle-free polishing is realized.

However, there are some drawbacks to this detachable reentrant corner design in practical use. Firstly, the process of disassembling the internal corner is complicated, and the screw for fixing the internal corner is required to be disassembled firstly, and then the internal corner is taken down from the buckle of the dust cover. After finishing the corner polishing, the reentrant corner is also required to be assembled. Secondly, can dismantle reentrant corner only design in dust cover quarter department, when polishing wall or four direction corners on ground respectively, need polisher fuselage rotatory 90 degrees or 180 degrees respectively, make the mill in the reentrant corner breach of dust cover can contact the corner. When in a manual polishing mode, the posture of the hand-held polisher needs to be changed; when the robot is used for automatically polishing, the internal corner is required to be disassembled and assembled manually, and meanwhile, the head part of the polishing machine is required to be designed into a rotatable structure, so that the operation is complex, the working efficiency is low, and the manufacturing cost is high. And after the internal corner is disassembled, dust and small broken stone generated by polishing fly out from the notch of the internal corner of the dust cover, so that environmental pollution and personal injury are caused.

Disclosure of Invention

In order to overcome the defects of complex operation, difficult corner polishing and the like caused by the fact that an internal corner is required to be disassembled when the existing dust cover of the polisher is used for polishing corner positions, the utility model provides the internal corner telescopic polishing dust cover, wherein the internal corner is arranged as a sliding telescopic action part, the use is convenient and efficient, and the wall and ground can be polished without dead angles.

The utility model adopts the technical proposal for solving the technical problems that: the telescopic inside corner polishing dust cover comprises a dust cover body which is fixedly connected with a motor of a polishing machine and is covered on a polishing machine abrasive disc, wherein at least one inside corner assembly welding piece is arranged on the dust cover body, the inside corner assembly welding piece is in sliding connection with the dust cover body along the direction from the edge of the dust cover body to the center of the dust cover body, and when the inside corner assembly welding piece slides towards the center of the dust cover body, an opening for exposing the edge of the abrasive disc is formed between the edge of the inside corner assembly welding piece and the edge of the dust cover body; the dust hood body is communicated with a dust collection pipe.

Further, the inside corner assembly welding piece is provided with an elastic component, so that the inside corner assembly welding piece compresses the elastic component to slide towards the center direction of the dust cover body, or the elastic component rebounds to enable the inside corner assembly welding piece to slide towards the edge direction of the dust cover body.

Further, four internal corner assembly welding pieces are uniformly distributed on the dust cover body.

Further, the internal corner assembly welding piece comprises an internal corner, a supporting lug, a roller seat, a pin shaft and a roller; the inner corner is fixedly connected with a support lug, the upper surface of the support lug is fixedly connected with a roller seat, the roller is in threaded connection with the roller seat through a screw rod, and the outer edge of the roller is consistent with the outer edge of the grinding disc in orientation; the lower surface of the support lug is fixedly connected with a pin shaft, the outer wall of the pin shaft is sleeved with a spring, and the spring is inserted into a bracket fixedly connected to the surface of the dust cover body and positioned through a locking nut; the two ends of the spring are respectively and fixedly connected with the supporting lugs and the bracket.

Further, brush grooves are respectively formed in the internal corners and the dust cover body, long brushes are arranged in the brush grooves of the internal corners, and short brushes are arranged in the brush grooves of the dust cover body.

Further, a detachable handle is arranged on the polisher motor.

Compared with the prior art, the utility model has the following beneficial effects: the internal corner assembly welding piece can slide towards the center of the dust cover body, so that an opening for exposing the edge of the abrasive disc is formed between the edge of the internal corner assembly welding piece and the edge of the dust cover body, the corner can be polished without disassembly and assembly, and the internal corner assembly welding piece is more convenient and efficient and safer than a common detachable internal corner type dust cover, and can polish walls and floors without dead angles; four internal corner assembly welding pieces are uniformly distributed on the dust cover body, so that the polishing requirements of surrounding corners can be met, the posture of a handheld polishing machine is not required to be changed, and the operation is convenient; the long hairbrush and the short hairbrush which are covered outside the abrasive disc are arranged, so that the dustproof and safety protection effects can be achieved; the detachable handle can be fixed in the corresponding mounting hole of the motor or can be cancelled according to the polishing work requirement.

Drawings

FIG. 1 is an isometric view of a telescopic sanding dust cap in an inside corner extended position;

fig. 2 is an isometric view of a telescopic sanding dust cap in a retracted state.

In the figure: 1-a dust cover body; 2-a dust collection pipe; 3-a bracket; 4-internal angle; 5-supporting lugs; 6-a roller seat; 7-a pin shaft; 8-a roller; 9-a spring; 10-long hairbrushes; 11-short brush; 12-screws; 13-an electric motor; 14-a laryngeal cuff; 15-locking nuts; 16-grinding the sheet; 17-detachable handle.

Detailed Description

The following description of the embodiments of the present utility model will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the utility model are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the present utility model, it should be noted that the azimuth or positional relationship indicated by the terms "upper", "lower", "left", "right", etc. are based on the azimuth or positional relationship shown in the drawings, and are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or component referred to must have a specific azimuth, be configured and operated in a specific azimuth, and thus should not be construed as limiting the present utility model.

In addition, the technical features of the different embodiments of the present utility model described below may be combined with each other as long as they do not collide with each other.

Example 1

Aiming at the problems of complicated process of dismantling the internal corners, difficult corner polishing, poor dustproof effect, potential safety hazard and the like of the existing grinding machine dust cover in the current building field, the utility model provides the internal corner telescopic grinding dust cover, which comprises a dust cover body 1, a dust suction pipe 2, a bracket 3, an internal corner 4, a supporting lug 5, a roller seat 6, a pin shaft 7, a roller 8, a spring 9, a long hairbrush 10 and a short hairbrush 11;

the dust cover body 1 is fastened to a motor 13 of a grinding machine through a screw 12, a grinding piece 16 of the grinding machine is connected with an output shaft of the motor 13, and the motor 13 output shaft drives the grinding piece 16 to rotate so as to grind the concrete surface; the dust suction pipe 2 is fixedly connected to the dust cover body 1 through a hose clamp 14 and is used for sucking out dust generated by polishing; the sander motor 13 is provided with a removable handle 17 which may be secured in a corresponding mounting hole in the motor or removed depending on the sanding job.

Four brackets 3 are welded on the upper surface of the dust cover body 1 at equal intervals; the dust cover body 1 and the internal corners 4 are designed into conical structures, so that the internal corners 4 can slide on the dust cover body 1 in a directional manner along the edge and the central direction, when the four internal corners 4 are all at the initial position, the outer edges of the internal corners and the outer edges of the dust cover body 1 form a circular edge, and when one internal corner 4 slides towards the center of the dust cover body 1, an opening for exposing the edge of the grinding disc 16 is formed between the edge of the internal corner 4 and the edge of the dust cover body 1.

In order to enable the inside corner 4 to slide on the dust cover body 1, the following structure is provided: the inner corner 4 is welded with a support lug 5, and the upper surface and the lower surface of the support lug 5 are respectively welded with a roller seat 6 and a pin shaft 7; the roller 8 is connected with the roller seat 6 through threads thereof; the pin shaft 7 is sleeved with the spring 9 and then inserted into the bracket 3, can slide in the bracket 3 and is positioned by the locking nut 15, the maximum sliding distance of the pin shaft 7 in the edge direction is limited, and two ends of the spring 9 are fixedly connected with the support lugs 5 and the bracket 3 respectively; the outer edge of the roller 8 and the outer edge of the grinding plate 16 face in the same direction, and when the internal corner 4 is at the initial position, the distance from the tangent plane of the outer edge of the roller 8 to the center of the dust cover body 1 is greater than the distance from the tangent plane of the outer edge of the grinding plate 16 to the center of the dust cover body 1.

Preferably, a long brush 10 is respectively arranged in the brush grooves of the four internal corners 4; a short brush 11 is respectively arranged in the four brush grooves on the dust cover body 1. When the internal corner 4 is at the initial position, the long hair brushes 10 and the short hair brushes 11 are sequentially arranged at intervals, and the complete round hair brushes are covered outside the grinding disc 16.

In an embodiment in which the brush groove of the inside corner 4 and the brush groove of the dust cover body 1 are provided with the long brush 10 and the short brush 11, respectively, the principle of action of the present utility model is as follows: when the corner is polished, the long brush 10 is contacted with the side wall firstly along with the movement of the polisher to the corner, and is propped to one side by the corner, and at the moment, the corner is not contacted with the grinding plate 16 because the outer edge of the roller 8 is positioned outside the outer edge of the grinding plate 16. The polisher continues to move to the corner until the roller 8 contacts with the side wall, the side wall thrust pushes the roller 8 to enable the lugs 5 to compress the springs 9 towards the direction of the support 3, and the reentrant corner 4 is driven to slide towards the center of the dust cover body 1. When the inside corner 4 slides to a position where the outer edge of the roller 8 is flush with the outer edge of the abrasive sheet 16, the abrasive sheet 16 can be polished to the corner. When the polisher is far away from the side wall, the spring 9 pushes the supporting lugs 5 by elasticity, and then the internal corner 4 is driven to slide to the limit position of the locking nut 15 towards the edge of the dust cover body 1. In the process, the long hairbrush 10 slides together with the internal corner 4, the short hairbrush 11 is fixed on the dust cover body 1, and the short hairbrush 11 always covers the outer part of the grinding disc 16, so that the dust prevention and safety protection effects are achieved.

In another embodiment without the long brush 10 and the short brush 11, the principle of action of the present utility model is as follows: the polisher moves to the corner to contact with the roller 8 and the side wall, the side wall thrust pushes the roller 8 to enable the lugs 5 to compress the springs 9 towards the direction of the support 3, and the reentrant corner 4 is driven to slide towards the center of the dust cover body 1. When the inside corner 4 slides to a position where the outer edge of the roller 8 is flush with the outer edge of the abrasive sheet 16, the abrasive sheet 16 can be polished to the corner. When the polisher is far away from the side wall, the spring 9 pushes the supporting lugs 5 by elasticity, and then the internal corner 4 is driven to slide to the limit position of the locking nut 15 towards the edge of the dust cover body 1.

It is apparent that the above examples are given by way of illustration only and are not limiting of the embodiments. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. While still being apparent from variations or modifications that may be made by those skilled in the art are within the scope of the utility model.

Claims (6)

1. The utility model provides a telescopic dust cover of polishing of reentrant corner, includes dust cover body (1) on polisher abrasive disc (16) are established and cover with polisher motor (13) fastening connection, characterized in that, install at least one reentrant corner assembly welding spare on dust cover body (1), reentrant corner assembly welding spare along dust cover body (1) border to dust cover body (1) central direction and dust cover body (1) sliding connection, when reentrant corner assembly welding spare slides to dust cover body (1) center, be formed with the opening that is used for exposing abrasive disc (16) edge between reentrant corner assembly welding spare border and dust cover body (1) border; the dust hood body (1) is communicated with a dust collection pipe (2).

2. A telescopic sanding dust cap as defined in claim 1, wherein the inside corner fitting is provided with an elastic member so that the inside corner fitting compresses the elastic member to slide in the direction of the center of the dust cap body (1), or the elastic member rebounds to slide in the direction of the edge of the dust cap body (1).

3. The telescopic polishing dust cover for the internal corners of claim 2, wherein four internal corner assembly welding pieces are uniformly distributed on the dust cover body (1).

4. A telescopic polishing dust cover for an internal corner according to claim 3, wherein the internal corner assembly welding piece comprises an internal corner (4), a supporting lug (5), a roller seat (6), a pin shaft (7) and a roller (8); the inner corner (4) is fixedly connected with a support lug (5), the upper surface of the support lug (5) is fixedly connected with a roller seat (6), a roller (8) is in threaded connection with the roller seat (6) through a screw rod, and the outer edge of the roller (8) is consistent with the outer edge of the grinding disc (16); the lower surface of the support lug (5) is fixedly connected with a pin shaft (7), the outer wall of the pin shaft (7) is sleeved with a spring (9), and the spring is inserted into a bracket (3) fixedly connected to the surface of the dust cover body (1) and positioned through a locking nut (15); two ends of the spring (9) are respectively fixedly connected with the supporting lugs (5) and the bracket (3).

5. The telescopic polishing dust cover for the internal corners of claim 4, wherein the internal corners (4) and the dust cover body (1) are respectively provided with brush grooves, long brushes (10) are arranged in the brush grooves of the internal corners (4), and short brushes (11) are arranged in the brush grooves of the dust cover body (1).

6. An inside corner extension grinding dust cover according to any one of claims 1-5, characterized in that the grinder motor (13) is provided with a detachable handle (17).