Grinding wheel cover connecting mechanism arranged on angle grinder

Abstract

The utility model discloses a grinding wheel cover connecting mechanism arranged on an angle grinder, which comprises a mounting plate and a ring sleeve, one end of a rotating shaft extending into a grinding wheel cover is fixedly provided with a saw grinding sheet, and the mounting plate is provided with a groove connecting part around the ring sleeve. A protruding part extending out of the surface of the inner wall of the mounting plate is arranged at the position, corresponding to the groove connecting part, of the inner wall of the mounting plate, a wear-resisting distance increasing cushion cover is arranged between the protruding part and the saw grinding piece, and the outer circumference of the saw grinding piece extends out of the edge of the protruding part; the groove connecting part is arranged on the outer wall of the mounting plate on the side wall of the grinding wheel cover, the end part of the transmission mechanism is fixed on the groove connecting part through the ring sleeve, the protruding part on the inner wall of the mounting plate extends out of the back surface of the groove connecting part, and the protruding part extends out of the outer circumference of the saw grinding sheet; the gap between the saw grinding piece and the inner wall of the mounting plate is increased through the protruding part, and the edge wiping phenomenon of the saw grinding piece is avoided under the condition that the power of the saw grinding piece is not increased.

Description

Technical Field

[0001] The utility model belongs to the technical field of angle grinders, and particularly relates to a grinding wheel cover connecting mechanism arranged on the angle grinder. Background Art

[0002] Angle grinder is a portable electric tool that uses fiberglass for cutting and grinding. It is mainly used for cutting, grinding and brushing metal and stone. Electric angle grinder uses high-speed rotating thin-blade grinding wheels, rubber grinding wheels, wire wheels, etc. to grind, cut, rust remove and polish metal components. The grinding disc of the angle grinder is easily damaged or consumed during use, so the saw grinding disc needs to be replaced frequently.

[0003] The Chinese patent number is 2022229739670, which discloses an angle grinder, which includes a casing and a driving motor, wherein the driving motor is fixedly installed inside one end of the casing, a front end support frame is fixedly installed in front of one end of the casing close to the driving motor, a rotating shaft is rotatably connected to the front end support frame, a driven gear is fixedly sleeved on the upper end of the rotating shaft, a transmission shaft is fixedly connected to the rotating shaft end of the driving motor, a driving gear is fixedly connected to the end of the transmission shaft away from the driving motor, the driving gear is meshed with the driven gear, a saw grinding blade is fixedly installed on the end of the rotating shaft away from the driven gear, and a protective cover is fixedly installed on the front end support frame, and the protective cover is located at Between the saw grinding disc and the driven gear, there is a protective cover to prevent the grinding powder generated during the grinding operation from flying around. In direct operation, in order to facilitate the replacement of the saw grinding disc, the dust cover is set to a detachable structure. In addition, in order to enable the operator to adopt a better posture for the operation, the coverage of the dust cover on the grinding wheel must be changed so that the dust cover can be deflected relative to the main shaft. Usually, a circular mounting ring portion is provided on the dust cover, and a cylindrical protrusion is provided on the front end support frame. The mounting ring portion is fixedly installed on the cylindrical protrusion by a fixing screw to fix the dust cover. The fixing screw is unscrewed to loosen the mounting ring portion, so that the dust cover can be removed to replace the saw grinding disc.

[0004] In actual operation, the rotating shaft extends into the dust cover, and the saw blade is fixed on the rotating shaft by a bushing and a locking nut. The gap between the saw blade and the inner wall of the mounting ring is too small, and the gap is equal to the thickness of the bushing. During high-speed grinding, the saw blade is easy to contact with the inner wall of the mounting ring near the edge, causing edge friction, which can easily damage the saw blade and lead to high production costs.

[0005] Therefore, it is necessary to design a new grinding wheel cover connection mechanism that can avoid the edge scraping phenomenon of the saw grinding disc during high-speed grinding. Summary of the invention

[0006] The utility model provides a grinding wheel cover connecting mechanism arranged on an angle grinder, wherein a groove connecting part is arranged on the outer wall of a mounting plate at a side wall of the grinding wheel cover, an end of a transmission mechanism is fixed to the groove connecting part by a ring sleeve, a through hole through which a rotating shaft passes is arranged on the groove connecting part, a saw grinding disc is mounted on the rotating shaft extending from the inner wall of the groove connecting part through the fixed connecting mechanism, a protrusion extending from the inner wall of the mounting plate from the back side of the groove connecting part is utilized, a protrusion extends from the outer circumference of the saw grinding disc, and a gap between the saw grinding disc and the inner wall of the mounting plate is increased by utilizing the protrusion, thereby solving the problem of edge rubbing of the saw grinding disc without increasing the power of the saw grinding disc.

[0007] In order to solve the above technical problems, the utility model discloses a grinding wheel cover connecting mechanism provided on an angle grinder, comprising a mounting plate detachably mounted on the side wall of the grinding wheel cover and a ring sleeve detachably mounted on the outer wall of the mounting plate and used to fix the transmission mechanism, a receiving hole for the rotating shaft to pass through is provided on the mounting plate in the middle of the ring sleeve, a saw blade is fixedly mounted on one end of the rotating shaft extending into the grinding wheel cover, a groove connecting portion is provided on the mounting plate around the ring sleeve, a protrusion extending from the inner wall surface of the mounting plate is provided on the inner wall of the mounting plate corresponding to the groove connecting portion, a wear-resistant distance-increasing pad sleeve is provided between the protrusion and the saw blade, and the edge of the protrusion extends from the outer circumference of the saw blade.

[0008] Furthermore, the depth of the groove connection portion is set to 2-5 mm, and the height of the protrusion portion is set to 2-5 mm.

[0009] Furthermore, the groove connection portion is fixed to the mounting plate by bolts.

[0010] Furthermore, the groove connection portion and the mounting plate are configured as an integrally formed body.

[0011] Furthermore, the end of the rotating shaft is arranged to be a thread, and a saw blade mounting sleeve, a saw blade locking sleeve and a locking nut are connected to the rotating shaft through threads, the saw blade is pressed between the saw blade mounting sleeve and the saw blade locking sleeve, and a wear-resistant distance-increasing pad sleeve is arranged between the saw blade mounting sleeve and the protrusion.

[0012] Furthermore, a mounting portion which is sleeved in the mounting hole of the saw grinding blade protrudes from the side wall of the saw grinding blade mounting sleeve.

[0013] Furthermore, one end of the mounting plate is hinged to the side wall of the dust cover through a hinge shaft, and a convex plate is arranged at the lower part of the other end, and a limiting groove corresponding to the convex plate is arranged on the side wall of the dust cover.

[0014] Furthermore, the mounting plate is provided with mounting screws around its periphery for connecting with the side walls of the dust cover.

[0015] Furthermore, the ring sleeve includes a ring sleeve part I and a ring sleeve part II which are connected in a split manner. The ring sleeve part I is fixed to the groove connecting part by means of a mounting screw I. The ring sleeve part I is provided with a docking bolt hole for connecting the ring sleeve part II.

[0016] Furthermore, the hinge shaft is hinged with a sawing depth adjuster on the other side of the dust cover away from the mounting plate, a depth adjustment locking nut is arranged on the other side of the dust cover away from the mounting plate, and the sawing depth adjuster even has an arc-shaped slide groove for accommodating the depth adjustment locking nut.

[0017] The beneficial effects of the utility model are:

[0018] 1. The utility model discloses a grinding wheel cover connecting mechanism provided on an angle grinder, wherein a groove connecting portion is provided on the outer wall of a mounting plate at a side wall of the grinding wheel cover, an end of a transmission mechanism is fixed to the groove connecting portion by a ring sleeve, a through hole through which a rotating shaft passes is provided on the groove connecting portion, a saw grinding disc is installed on the rotating shaft extending from the inner wall of the groove connecting portion by a fixed connecting mechanism, a protrusion extending from the inner wall of the mounting plate from the back side of the groove connecting portion is utilized, a protrusion extends from the outer circumference of the saw grinding disc, and the protrusion is utilized to increase the gap between the saw grinding disc and the inner wall of the mounting plate, thereby solving the problem of edge rubbing of the saw grinding disc without increasing the power of the saw grinding disc.

[0019] 2. The utility model provides a grinding wheel cover connection mechanism arranged on the angle grinder, which makes the installation of the cutting disc and the angle grinder more reasonable, and solves the problems of edge rubbing and improper installation of the dust cover. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a diagram of the installation state of the grinding wheel cover connecting mechanism of the utility model provided on the angle grinder;

[0021] Figure 2 It is a structural schematic diagram of a grinding wheel cover connecting mechanism provided on an angle grinder of the utility model;

[0022] Figure 3 It is an expanded structural diagram of the grinding wheel cover connecting mechanism of the utility model provided on the angle grinder;

[0023] Figure 4 It is a schematic diagram of the state of the grinding wheel cover connecting mechanism connected to the driving mechanism of the utility model provided on the angle grinder;

[0024] Figure 5 It is a schematic diagram of the state of replacing the saw grinding disc of the grinding wheel cover connecting mechanism provided on the angle grinder of the utility model;

[0025] Figure 6 It is a schematic diagram of the grinding wheel cover connection mechanism of the utility model provided on the angle grinder when the sawing depth is 0 mm;

[0026] Figure 7 It is a schematic diagram of the grinding wheel cover connecting mechanism of the utility model arranged on the angle grinder when the sawing depth is 10mm.

[0027] Figure markings: 1-driving body; 2-transmission mechanism; 3-grinding wheel cover; 4-mounting plate; 5-mounting screw; 6-ring sleeve, 7-mounting screw I, 8-groove connecting part, 9-ring sleeve part I, 10-ring sleeve part II, 11-hinge shaft, 12-distance increasing sleeve; 13-rotating shaft, 14-protrusion; 15-saw grinding disc mounting sleeve; 16-saw grinding depth adjuster; 17-depth adjustment locking nut; 18-thread; 19-saw grinding disc; 20-saw grinding disc locking sleeve; 21-arc slide groove; 22-limiting groove; 23-convex plate; 24-docking bolt hole. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0029] like Figure 1-7 This is a structural schematic diagram of a grinding wheel cover connecting mechanism provided on an angle grinder proposed by the utility model. The utility model provides a grinding wheel cover connecting mechanism provided on an angle grinder, including a mounting plate 4 detachably mounted on the side wall of the grinding wheel cover 3 and a ring sleeve 6 detachably mounted on the outer wall of the mounting plate 4 and used to fix the transmission mechanism. The mounting plate 4 is provided with a accommodating hole for the rotation shaft 13 to pass through in the middle of the ring sleeve 6. A saw grinding disc 19 is fixedly mounted on one end of the rotation shaft 13 extending into the grinding wheel cover 4. The mounting plate 4 is provided with a groove connecting portion 8 around the ring sleeve. A protrusion 14 extending from the inner wall surface of the mounting plate is provided on the inner wall of the mounting plate 4 at a position corresponding to the groove connecting portion 8. A wear-resistant distance-increasing pad sleeve 12 is provided between the protrusion 14 and the saw grinding disc 19, and the edge of the protrusion extends from the outer circumference of the saw grinding disc 19.

[0030] In this embodiment, a groove connecting part 8 is provided on the outer wall of the mounting plate 4 at the side wall of the grinding wheel cover 3, the end of the transmission mechanism 2 is fixed to the groove connecting part 8 by a ring sleeve 5, and a through hole for the rotating shaft 13 to pass through is provided on the groove connecting part 8. The saw grinding blade 19 is installed on the rotating shaft 13 extending from the inner wall of the groove connecting part through a fixed connecting mechanism, and a protrusion 14 extending from the inner wall of the mounting plate from the back side of the groove connecting part 8 is utilized. The protrusion extends from the outer circumference of the saw grinding blade 19, and the gap between the saw grinding blade and the inner wall of the mounting plate is increased by utilizing the protrusion, thereby solving the problem of the saw grinding blade rubbing against the edge without increasing the power of the saw grinding blade.

[0031] During the implementation of this embodiment, the driving body includes a casing and a driving motor. The driving motor is fixedly installed inside one end of the casing. A transmission mechanism is fixedly installed in front of the end of the casing close to the driving motor. A rotating shaft is arranged on the transmission mechanism. A driven gear is fixedly sleeved on the upper end of the rotating shaft. The rotating shaft end of the driving motor is fixedly connected with a transmission shaft. The end of the transmission shaft away from the driving motor is fixedly connected with a driving gear. The driving gear is meshed with the driven gear. The motor drives the transmission shaft, the driving gear, the driven gear, the rotating shaft and the saw grinding disc to rotate in sequence to realize the grinding operation.

[0032] In a preferred embodiment, the depth of the groove connection portion 8 is set to 2-5mm, and the height of the protrusion is set to 2-5mm. This structure of the present embodiment avoids increasing the power of the saw blade and avoiding the edge scraping of the saw blade while ensuring that the original saw blade 19 and the transmission mechanism remain in position.

[0033] In a preferred embodiment, the groove connecting portion 8 is fixed to the mounting plate by bolts. In this embodiment, the structure adopts a separate structure for the groove connecting portion 8 so that it can be separated from the mounting plate. Relatively speaking, this structure has low processing difficulty and is easy to operate. Its disadvantage is that the installation connection strength of the groove connecting portion 8 is easy to deform and loosen. In this embodiment, there is another structure in which the groove connecting portion 8 and the mounting plate 4 are arranged as an integrally formed body. This structure is stamped and formed by a stamping machine at one time. Compared with the detachable connection structure adopted between the groove connecting portion 8 and the mounting plate, this structure has fewer processing steps and relatively higher cost, and the installation connection strength of the groove connecting portion 8 is large.

[0034] In a preferred embodiment, the end of the rotating shaft 13 is set to a thread 18, and a saw blade mounting sleeve 15, a saw blade locking sleeve 20 and a locking nut are connected to the rotating shaft 13 through the thread 18. The saw blade 19 is pressed between the saw blade mounting sleeve 15 and the saw blade locking sleeve 20, and the wear-resistant distance-increasing sleeve 12 is set between the saw blade mounting sleeve 15 and the protrusion 14. The saw blade mounting sleeve 12 has a mounting portion protruding on the side wall thereof, which is sleeved in the saw blade mounting hole. This mechanism in this embodiment is conducive to installing and fixing the saw blade. The use of the wear-resistant distance-increasing sleeve 12 not only achieves the purpose of increasing the distance, but also reduces the direct wear between the saw blade mounting sleeve 12 and the protrusion 14 of the mounting plate, thereby extending the service life of the equipment and reducing the cost.

[0035] In a preferred embodiment, one end of the mounting plate 4 is hinged to the side wall of the dust cover 3 through a hinge shaft 11, and a convex plate 23 is arranged at the lower part of the other end. A limiting groove 22 corresponding to the convex plate 23 is arranged on the side wall of the dust cover 3. Mounting screws 5 for connecting with the side wall of the dust cover 3 are arranged around the mounting plate 4. The ring sleeve 6 includes a ring sleeve part I9 and a ring sleeve part II10 connected in a split type. The ring sleeve part I is fixed to the groove connecting part 8 by a mounting screw I7. A docking bolt hole 24 for connecting the ring sleeve part II10 is arranged on the ring sleeve part I9. This structure is convenient for replacing the saw grinding wheel.

[0036] In a preferred embodiment, the hinge shaft 11 is located on the other side of the dust cover 3 away from the mounting plate 4 and is hinged with a sawing depth adjuster 16. A depth adjustment locking nut 17 is provided on the other side of the dust cover away from the mounting plate. The sawing depth adjuster 16 even has an arc-shaped slide groove 21 for accommodating the depth adjustment locking nut. This structure adjusts the sawing depth adjuster 16 to deflect along the hinge shaft 11 of the dust cover 3, adjusts the sawing blade 19 to expose the bottom position of the sawing depth adjuster, and then uses the depth adjustment locking nut 17 to lock it, thereby realizing the grinding operation of the sawing blade 19. This structure can realize the sawing operation depth range of the grinding blade 19 to be 0-30mm.

[0037] The above are only preferred specific implementation methods of the utility model, but the protection scope of the utility model is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the utility model, who makes equivalent replacements or changes based on the technical scheme and utility model concept of the utility model, should be covered by the protection scope of the utility model.

Claims

1. A grinding wheel cover connection mechanism provided on an angle grinder, comprising a mounting plate detachably mounted on the side wall of the grinding wheel cover and a ring sleeve detachably mounted on the outer wall of the mounting plate and used to fix the transmission mechanism, wherein the mounting plate is provided with a receiving hole through which a rotating shaft passes in the middle of the ring sleeve, and a saw grinding disc is fixedly mounted on one end of the rotating shaft extending into the grinding wheel cover, characterized in that: The mounting plate is provided with a groove connection portion around the ring sleeve, and a protrusion extending from the inner wall surface of the mounting plate is provided on the inner wall of the mounting plate corresponding to the groove connection portion. A wear-resistant distance-increasing pad sleeve is provided between the protrusion and the saw grinding disc, and the edge of the protrusion extends from the outer circumference of the saw grinding disc.

2. The grinding wheel cover connection mechanism provided on an angle grinder according to claim 1, characterized in that: The depth of the groove connection part is set to 2-5mm, and the height of the protrusion part is set to 2-5mm.

3. The grinding wheel cover connection mechanism provided on an angle grinder according to claim 1, characterized in that: The groove connection part is fixed on the mounting plate by bolts.

4. The grinding wheel cover connection mechanism provided on an angle grinder according to claim 1, characterized in that: The groove connection portion and the mounting plate are configured as an integrally formed body.

5. A grinding wheel cover connection mechanism provided on an angle grinder according to any one of claims 1 to 4, characterized in that: The end of the rotating shaft is arranged with a thread, and a saw blade mounting sleeve, a saw blade locking sleeve and a locking nut are connected to the rotating shaft through threads, the saw blade is pressed between the saw blade mounting sleeve and the saw blade locking sleeve, and the wear-resistant distance-increasing washer sleeve is arranged between the saw blade mounting sleeve and the protrusion.

6. The grinding wheel cover connection mechanism provided on an angle grinder according to claim 5, characterized in that: A mounting portion which is sleeved in the saw grinding blade mounting hole is protruded from the side wall of the saw grinding blade mounting sleeve.

7. The grinding wheel cover connection mechanism provided on an angle grinder according to claim 1, characterized in that: One end of the mounting plate is hinged to the side wall of the dust cover through a hinge shaft, and a convex plate is arranged at the lower part of the other end. The side wall of the dust cover is provided with a limiting groove corresponding to the convex plate.

8. A grinding wheel cover connection mechanism provided on an angle grinder according to claim 1 or 7, characterized in that: The mounting plate is provided with mounting screws around its periphery for connecting with the side wall of the dust cover.

9. The grinding wheel cover connection mechanism provided on an angle grinder according to claim 1, characterized in that: The ring sleeve comprises a ring sleeve part I and a ring sleeve part II which are connected in a split manner. The ring sleeve part I is fixed to the groove connecting part by means of a mounting screw I. The ring sleeve part I is provided with a butt bolt hole for connecting the ring sleeve part II.

10. The grinding wheel cover connection mechanism provided on an angle grinder according to claim 7, characterized in that: The hinge shaft is located on the other side of the dust cover away from the mounting plate and is hinged with a sawing depth adjuster. A depth adjustment locking nut is arranged on the other side of the dust cover away from the mounting plate. The sawing depth adjuster even has an arc-shaped slide groove for accommodating the depth adjustment locking nut.

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