CN216681751U

CN216681751U - Grinding wheel cover capable of being locked quickly

Info

Publication number: CN216681751U
Application number: CN202123448138.2U
Authority: CN
Inventors: 杨海勇; 潘登; 潘春燕; 华晖; 陈敏瑞; 毛立军
Original assignee: Zhejiang Xingdu Electric Appliance Co ltd
Current assignee: Zhejiang Xingdu Electric Appliance Co ltd
Priority date: 2021-12-31
Filing date: 2021-12-31
Publication date: 2022-06-07
Anticipated expiration: 2031-12-31

Abstract

The utility model provides a grinding wheel cover capable of being locked quickly. It has solved the problem that the screw dropped easily when current grinding wheel guard demolishs. When the angle grinder is used, the hoop is sleeved on the angle grinder, the outer ring inner wall with smaller diameter and the flange inner wall are attached to the angle grinder all the time, the convex block on the wrench is placed on the arc-shaped plate, and the end of the wrench far away from the arc-shaped plate is pushed to move towards the center direction of the outer ring, the distance between the arc-shaped plate and the rotating shaft is smaller and smaller in the process that the wrench rotates around the arc-shaped plate through the pull rod, the arc-shaped plate gradually moves towards the direction of the fixed plate, and accordingly the grinding wheel cover can be fixed.

Description

Grinding wheel cover capable of being locked quickly

Technical Field

The utility model relates to the technical field of grinding wheel guards, in particular to a grinding wheel guard capable of being locked quickly.

Background

Among a plurality of electric tools, the electric angle grinder has quite wide application, and can be used for cutting stainless steel, alloy steel, common carbon steel sections and pipes, grinding burrs and welding seams of workpieces, and cutting large-diameter stainless steel after plasma cutting, and can also be used for cutting building materials such as bricks, stones, asbestos corrugated plates and the like by replacing special cutting sheets; the steel wire brush and the sand disc can be used for removing rust and sanding the metal surface; the polishing wheel can be replaced to polish the surfaces of various materials.

In order to prevent the grinding wheel and the cutting blade from bursting and the abraded fragments from flying randomly to hurt operators, the angle grinder is provided with a protective cover which is generally in a semicircular shape, and the fragments are blocked and fly out from the other semicircular direction, so that the safety of the operators is ensured. In order to be convenient to mount and dismount, the protective cover is provided with an open hoop, the hoop is sleeved on the end cover of the reduction box, the aperture of the hoop is adjusted through a screw, and the end cover of the reduction box is hooped tightly to finish the mounting of the protective cover; when the protective cover is disassembled, the screw is loosened, but the screw can be separated from the protective cover.

In order to improve safety, the european union started implementing new mechanical standards from 2009 at 30/12, wherein new requirements are clearly set forth in the standards for angle grinder-type electric tools: the screws and other fittings on the shield may not be disengaged from the shield body or the gear box cover of the machine when the shield is rotated or removed. China also implemented the standard in 2011, and the standard is as follows in safety standard IEC 60745-2-3: 2011 "safety second part of a hand-held power tool: terms are newly added in special requirements of a grinder, a polishing machine and a disc sander: as part of the protective segment, the fasteners must remain on the shroud or tool after the wheel cover is removed, as dictated by the requirements. The hoop locked by the screw easily causes the screw to fall off when being disassembled, and the prior art has the improved part.

Disclosure of Invention

The utility model provides a grinding wheel cover capable of being locked quickly, aiming at the defect that a screw is easy to fall off when the existing grinding wheel cover is detached.

The utility model aims to be realized by the following technical scheme: a grinding wheel cover capable of being locked quickly comprises a grinding wheel cover body and a retaining edge fixedly arranged at the center of the grinding wheel cover, wherein a hoop is sleeved on the retaining edge, a convex edge towards the periphery of the retaining edge is fixedly arranged at the upper end of the retaining edge, one end of the hoop, close to the grinding wheel cover, is the left end of the hoop, the other end of the hoop is the rear end, a fixing plate extending in the direction away from the center of the hoop is fixedly arranged at the left end of the left end, an arc-shaped plate is fixedly arranged at the right end of the hoop, the opening of the arc-shaped plate faces to one side away from the fixing plate, a left wrench and a right wrench are sleeved on the periphery of the hoop, one end of the wrench, facing to the arc-shaped plate, is fixedly provided with a convex block used for being clamped in the arc-shaped plate, the outer wall of the convex block is attached to the inner wall of the arc-shaped plate all the time, the wrenches can rotate around the center of the arc-shaped plate through the convex block, and a pull rod is respectively arranged at the upper end and the lower end of the wrench, the one end that this pull rod is close to above-mentioned spanner is rotated and is set up on the spanner, and two pull rods are fixed to be provided with a pivot between the one end of above-mentioned fixed plate, insert on the fixed plate and be equipped with a gag lever post, the length direction of this gag lever post is perpendicular with the plane that above-mentioned fixed plate was located, the gag lever post is rotated towards the one end of above-mentioned arc and is set up in above-mentioned pivot, the one end that this pivot was kept away from to the gag lever post is located the opposite side of fixed plate, and the gag lever post is kept away from one of pivot and is served and be provided with and be used for the fixed locking mechanical system who sets up the gag lever post on the fixed plate.

Preferably, the hoop comprises an inner ring and an outer ring, the inner ring is sleeved on the periphery of the flange, the inner diameter of the inner ring is the same as the outer diameter of the flange, the outer ring is located outside the grinding wheel cover and between the inner ring and the arc-shaped plate, and the inner diameter of the outer ring is the same as the inner diameter of the flange.

Preferably, a push plate is fixedly arranged at one end of the wrench far away from the lug.

Preferably, the pull rod is arc-shaped.

Preferably, the locking mechanism comprises a limiting ring fixedly arranged on the end face of one side, away from the arc-shaped plate, of the fixing plate, a bolt is inserted into one end, away from the rotating shaft, of the limiting rod, and one end, facing the bolt, of the limiting ring abuts against the bolt.

Preferably, the two sides of the limiting ring facing the end face of the bolt are respectively provided with a groove used for being clamped on the bolt.

Preferably, two ends of the bolt are respectively and fixedly provided with a baffle.

Compared with the prior art, when the angle grinder is used, the hoop is sleeved on the angle grinder, the outer ring inner wall with smaller diameter and the flange inner wall are attached to the angle grinder all the time, the convex block on the wrench is placed on the arc-shaped plate, the end, away from the arc-shaped plate, of the wrench is pushed to move towards the center direction of the outer ring, the distance between the arc-shaped plate and the rotating shaft is smaller and smaller in the process that the wrench rotates around the arc-shaped plate through the pull rod, the arc-shaped plate gradually moves towards the direction of the fixed plate, fixing of the grinding wheel cover can be completed, installation is convenient, locking of the limiting rod is completed through the locking mechanism arranged at the end, away from the arc-shaped plate, of the limiting rod is inserted on the fixed plate all the time, the limiting rod is prevented from being separated, and the wrench is located on the hoop all the time.

Drawings

FIG. 1 is an overall structural view of the present invention;

FIG. 2 is an enlarged view taken at A in FIG. 1;

FIG. 3 is an overall structural view of the hoop;

FIG. 4 is a sectional view of the hoop;

fig. 5 is an enlarged view of fig. 4 at B.

The labels in the figure are: 1. a grinding wheel cover; 2. blocking edges; 3. hooping; 4. a convex edge; 5. a fixing plate; 6. an arc-shaped plate; 7. a wrench; 8. a bump; 9. a pull rod; 10. a rotating shaft; 11. a limiting rod; 12. a locking mechanism; 13. an inner ring; 14. an outer ring; 15. pushing the plate; 16. a limiting ring; 17. a bolt; 18. a groove; 19. and a baffle plate.

Detailed Description

The utility model will be further described with reference to examples of embodiments shown in the drawings to which: as shown in fig. 1-5, a quick-locking wheel guard 1 comprises a wheel guard 1 body and a flange 2 fixedly arranged at the center of the wheel guard 1, wherein a hoop 3 is sleeved on the flange 2, a convex edge 4 towards the periphery of the flange 2 is fixedly arranged on the flange 2, one end of the hoop 3 close to the wheel guard 1 is the left end of the hoop 3, the other end of the hoop is the rear end, the left end is fixedly provided with a fixing plate 5 extending towards the direction far away from the center of the hoop 3, the right end of the hoop 3 is fixedly provided with an arc-shaped plate 6, the opening of the arc-shaped plate 6 faces to the side far away from the fixing plate 5, the periphery of the hoop 3 is sleeved with a left spanner 7 and a right spanner 7, one end of the spanner 7 facing to the arc-shaped plate 6 is fixedly provided with a lug 8 clamped in the arc-shaped plate 6, the outer wall of the lug 8 is always attached to the inner wall of the arc-shaped plate 6, the spanner 7 can rotate around the center of the arc-shaped plate 6 through the convex block 8, the upper end and the lower end of the spanner 7 are respectively provided with a pull rod 9 in a rotating mode, one end, close to the spanner 7, of the pull rod 9 is arranged on the spanner 7 in a rotating mode, a rotating shaft 10 is fixedly arranged between the ends, facing the fixed plate 5, of the two pull rods 9, a limiting rod 11 is inserted into the fixed plate 5, the length direction of the limiting rod 11 is perpendicular to the plane where the fixed plate 5 is located, the end, facing the arc-shaped plate 6, of the limiting rod 11 is arranged on the rotating shaft 10 in a rotating mode, one end, far away from the rotating shaft 10, of the limiting rod 11 is located on the other side of the fixed plate 5, and a locking mechanism 12 used for fixedly arranging the limiting rod 11 on the fixed plate 5 is arranged on one end, far away from the rotating shaft 10, of the limiting rod 11. The hoop 3 comprises an inner ring 13 and an outer ring 14, the inner ring 13 is sleeved on the periphery of the flange 2, the inner diameter of the inner ring 13 is the same as the outer diameter of the baffle plate 19, the outer ring 14 is located outside the grinding wheel cover 1 and between the inner ring 13 and the arc-shaped plate 6, and the inner diameter of the outer ring 14 is the same as the inner diameter of the flange 2.

When using, establish on the angle mill through 3 covers of staple bolt, paste all the time and lean on the angle mill with 2 inner walls of flange through the less outer loop 14 inner wall of diameter, place on arc 6 through lug 8 with on spanner 7, and promote spanner 7 and keep away from the one end of arc 6 and remove to outer loop 14 central direction, make spanner 7 rotate the in-process around arc 6 through pull rod 9, the distance between arc 6 and the pivot 10 is more and more littleer, arc 6 removes to 5 directions of fixed plate gradually, can accomplish the fixed of grinding wheel house 1, it is comparatively convenient to install.

The end of the wrench 7 away from the projection 8 is fixedly provided with a push plate 15. The pull rod 9 is arc-shaped. Drive spanner 7 that can be convenient through push pedal 15 rotates, and makes pull rod 9 have longer length through curved pull rod 9, when demolising spanner 7, and lug 8 on spanner 7 can be comparatively convenient break away from arc 6, and it is comparatively convenient to dismantle.

The locking mechanism 12 comprises a limiting ring 16 fixedly arranged on the end surface of one side of the fixed plate 5 far away from the arc-shaped plate 6, a bolt 17 is inserted into one end of the limiting rod 11 far away from the rotating shaft 10, and one end of the limiting ring 16 facing the bolt 17 abuts against the bolt 17. Two sides of the limit ring 16 facing the end face of the bolt 17 are respectively provided with a groove 18 for being clamped on the bolt 17, so that the limit ring 16 is tightly attached to the bolt 17. Two ends of the bolt 17 are respectively and fixedly provided with a baffle plate 19. The limiting rod 11 is inserted on the fixing plate 5 all the time, so that the limiting rod 11 is prevented from being separated, and the wrench 7 is positioned on the hoop 3 all the time.

The specific embodiments described herein are merely illustrative of the spirit of the utility model. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the utility model as defined in the appended claims.

Claims

1. A grinding wheel cover capable of being locked quickly is characterized by comprising a grinding wheel cover (1) body and a retaining edge (2) fixedly arranged at the center of the grinding wheel cover (1), wherein a hoop (3) is sleeved on the retaining edge (2), a convex edge (4) extending towards the periphery of the retaining edge (2) is fixedly arranged on the retaining edge (2), one end, close to the grinding wheel cover (1), of the hoop (3) is the left end of the hoop (3), the other end of the hoop is the rear end, a fixing plate (5) extending towards the direction far away from the center of the hoop (3) is fixedly arranged at the left end, an arc-shaped plate (6) is fixedly arranged at the right end of the hoop (3), an opening of the arc-shaped plate (6) faces one side far away from the fixing plate (5), a left spanner (7) and a right spanner (7) are sleeved on the periphery of the hoop (3), one end, facing towards the arc-shaped plate (6), of the spanner (7) is fixedly provided with a convex block (8) used for being clamped in the arc-shaped plate (6), the outer wall of the convex block (8) is always attached to the inner wall of the arc-shaped plate (6), the wrench (7) can rotate around the center of the arc-shaped plate (6) through the convex block (8), the upper end and the lower end of the wrench (7) are respectively provided with a pull rod (9) in a rotating mode, one end, close to the wrench (7), of each pull rod (9) is rotatably arranged on the wrench (7), a rotating shaft (10) is fixedly arranged between the two pull rods (9) and faces one end of the fixing plate (5), a limiting rod (11) is inserted into the fixing plate (5), the length direction of the limiting rod (11) is perpendicular to the plane where the fixing plate (5) is located, one end, facing the arc-shaped plate (6), of each limiting rod (11) is rotatably arranged on the rotating shaft (10), one end, far away from the rotating shaft (10), of each limiting rod (11) is located on the other side of the fixing plate (5), and one end of the limiting rod (11) far away from the rotating shaft (10) is provided with a locking mechanism (12) used for fixedly arranging the limiting rod (11) on the fixing plate (5).

2. The quick-locking grinding wheel cover according to claim 1, characterized in that the anchor ear (3) comprises an inner ring (13) and an outer ring (14), the inner ring (13) is sleeved on the periphery of the flange (2), the inner diameter of the inner ring (13) is the same as the outer diameter of the flange (2), the outer ring (14) is positioned outside the grinding wheel cover (1) and between the inner ring (13) and the arc-shaped plate (6), and the inner diameter of the outer ring (14) is the same as the inner diameter of the flange (2).

3. A quick-lock wheel guard according to claim 1, characterized in that a push plate (15) is fixedly arranged at the end of the wrench (7) remote from the projection (8).

4. A quick-lock wheel guard according to claim 1, characterized in that the draw bar (9) is arc-shaped.

5. The quick-locking grinding wheel cover according to claim 1, characterized in that the locking mechanism (12) comprises a limiting ring (16) fixedly arranged on the end surface of the fixing plate (5) far away from the arc-shaped plate (6), a plug pin (17) is inserted into one end of the limiting rod (11) far away from the rotating shaft (10), and one end of the limiting ring (16) facing the plug pin (17) abuts against the plug pin (17).

6. The grinding wheel cover capable of being locked quickly as claimed in claim 5, characterized in that the two sides of the limiting ring (16) facing the end face of the bolt (17) are respectively provided with a groove (18) for being clamped on the bolt (17).

7. The quick-locking wheel guard according to claim 6, characterized in that the two ends of the bolt (17) are respectively fixedly provided with a baffle plate (19).