CN112496960B - Grinder with band-type brake assembly - Google Patents
Grinder with band-type brake assembly Download PDFInfo
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- CN112496960B CN112496960B CN202011350622.9A CN202011350622A CN112496960B CN 112496960 B CN112496960 B CN 112496960B CN 202011350622 A CN202011350622 A CN 202011350622A CN 112496960 B CN112496960 B CN 112496960B
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- transmission shaft
- brake
- grinder
- brake assembly
- block
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B19/00—Single-purpose machines or devices for particular grinding operations not covered by any other main group
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B41/00—Component parts such as frames, beds, carriages, headstocks
- B24B41/04—Headstocks; Working-spindles; Features relating thereto
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B55/00—Safety devices for grinding or polishing machines; Accessories fitted to grinding or polishing machines for keeping tools or parts of the machine in good working condition
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B55/00—Safety devices for grinding or polishing machines; Accessories fitted to grinding or polishing machines for keeping tools or parts of the machine in good working condition
- B24B55/04—Protective covers for the grinding wheel
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Braking Arrangements (AREA)
Abstract
The invention discloses a grinding machine with a band-type brake assembly, which comprises a motor, a grinding wheel and a protective cover, wherein the protective cover is fixed on a shell of the motor through a connecting mechanism; the contracting brake assembly comprises a bottom plate and a contracting brake unit, wherein the contracting brake unit comprises a supporting plate which is slidably arranged on the bottom plate, a contact shaft which is fixed on the supporting plate, a brake assembly which is fixed on one end of the supporting plate, close to the transmission shaft, and a return spring; the connecting disc is provided with an insert block, the insert block is inserted into one side of the contact shaft close to the transmission shaft, and the inclined surface of the insert block is contacted with the contact shaft. According to the invention, when the grinder is tested for maintenance and the like, conditions that the grinder can be tested only by installing the protective cover are set, so that the relevant workers can be ensured to operate according to regulations, and the safety problem caused by non-standard operation when the grinder is tested is effectively avoided.
Description
Technical Field
The invention relates to the field of grinding machines, in particular to a grinding machine with a band-type brake assembly.
Background
Grinders are common devices used to sharpen various knives and tools. It is mainly composed of a base, a grinding wheel, a motor or other power sources as power sources, a bracket, a protective cover, a water feeder and the like. The motor is installed on the base, and the emery wheel sets up in the transmission shaft end of motor. One side of the grinding wheel is sleeved with a protective cover, and the protective cover is arranged on the shell of the grinding machine base.
When the grinding wheel works, the grinding wheel grinds the part, and grinding dust generated in the grinding process makes parabolic motion under the rotating moment from the grinding wheel and adheres to the inner side of the protective cover to prevent the grinding dust from splashing to the body of a worker, particularly eyes.
When the grinding machine fails, the protective cover, the grinding wheel and other parts need to be detached for troubleshooting. And after the fault is eliminated, the grinding wheel is installed back to the transmission shaft. At the moment, the grinding machine needs to be started, so that the grinding machine is tested to detect whether the grinding machine works normally or not, and the rotation stability, the grinding performance and the like of the grinding wheel are tested. When the grinding machine is tested, if the problem still exists, the grinding machine needs to be disassembled, cleared, reloaded and tested. Some maintainers feel that the operation of repeatedly disassembling and assembling the grinding machine and testing the grinding machine is troublesome, and usually, the grinding machine is directly tested without installing a protective cover when faults are eliminated and the grinding machine is assembled. The danger degree of direct machine trial without the protective cover is extremely high, for example, the strength and the quality of a newly replaced grinding wheel have problems, the grinding wheel blocks separated and broken by centrifugal force strike the bodies of surrounding workers, and fragments are splashed to eyes of people during grinding. Therefore, a device for preventing workers from operating illegally needs to be designed for the grinding machine, so that the operation compliance of related workers is guaranteed, and the personal safety of the related workers is guaranteed.
Disclosure of Invention
The invention aims to: the utility model provides a grinder with band-type brake subassembly has solved current grinder when examination machines such as maintenance, because of the suspected trouble of relevant staff and the safety problem that the operation leads to in violation of rules and regulations.
The technical scheme adopted by the invention is as follows:
a grinding machine with a band-type brake assembly comprises a motor, a grinding wheel and a protective cover, wherein the grinding wheel is coaxially mounted on a transmission shaft of the motor, the protective cover is fixed on a shell of the motor and covers one side of the grinding wheel, the protective cover is fixed on the shell of the motor through a connecting mechanism, the connecting mechanism comprises a connecting assembly and the band-type brake assembly, the connecting assembly comprises a flange ring, a connecting disc, a supporting cylinder and a fastener, the flange ring is sleeved on the shell of the motor, the connecting disc and the supporting cylinder are sleeved on the transmission shaft, the aperture of an inner hole of the connecting disc is larger than the outer diameter of the grinding wheel, one end of the supporting cylinder is connected with the connecting disc, the other end of the supporting cylinder is abutted against the flange ring, the connecting disc is detachably connected with the flange ring through the fastener, and the protective cover is fixed on the connecting disc;
the band-type brake assembly comprises a base plate which is sleeved on the transmission shaft and is fixedly connected with the shell of the motor and a band-type brake unit which is slidably mounted on the base plate, the band-type brake unit comprises a supporting plate which is slidably mounted on the base plate, a contact shaft which is fixed on the supporting plate, a brake assembly which is fixed on the supporting plate and is close to one end of the transmission shaft, and a return spring, wherein one end of the return spring is connected with the supporting plate, and the other end of the return spring is connected with the supporting plate;
an insertion block is arranged at one end of the connecting disc, which faces the bottom plate, an inclined surface is arranged on one side of the insertion block, which is far away from the axis of the transmission shaft, and the distance between the inclined surface and the axis of the transmission shaft is gradually increased along with the distance from the bottom plate; when the supporting cylinder is abutted to the flange ring, the inserting block is inserted into one side of the contact shaft close to the transmission shaft, the inclined surface of the inserting block is contacted with the outer circumferential surface of the contact shaft, and the transmission shaft is pushed towards one side far away from the transmission shaft until the brake assembly is separated from the transmission shaft.
Furthermore, a sliding groove is formed in the bottom plate, the axis of the sliding groove is perpendicular to the axis of the transmission shaft, a sliding block protrudes out of one side, close to the bottom plate, of the supporting plate, and the sliding block is inserted into the sliding groove and is in sliding fit with the sliding groove.
Furthermore, the one end that is close to the transmission shaft on the spout is the blind end, return spring is arranged in the spout to be located between slider and the transmission shaft, its both ends are connected with the one end that is close to the transmission shaft on slider and the spout respectively.
Further, the brake assembly comprises a brake plate connected with the support plate and a brake pad fixed on the side wall of the brake plate close to one side of the transmission shaft.
Furthermore, the brake block and the brake block are both bent into a cylindrical arc-shaped plate-shaped structure coaxial with each other, the inner concave surface of the brake block faces the transmission shaft, the outer convex surface of the brake block is connected with the inner concave surface of the brake block, the radius of the inner concave surface of the brake block is consistent with that of the transmission shaft, and the outer circumferential surface of the transmission shaft can be internally tangent to the inner concave surface of the brake block under the deformation action of the return spring.
Furthermore, a plurality of positioning pins are screwed on the flange ring, the axes of the positioning pins are parallel to the axis of the transmission shaft, and one end of the positioning pins, which is far away from the flange ring, movably penetrates through the connecting disc.
Furthermore, the fastener is a long bolt, the tail end of the rod part of the long bolt movably penetrates through the outer edge of the connecting disc and then is in threaded connection with the flange ring, and the head part of the long bolt is abutted against one side, far away from the flange ring, of the connecting disc.
Furthermore, band-type brake unit all has two with the inserted block, and its axial line central symmetry along the transmission shaft distributes, the inserted block respectively with a band-type brake unit cooperation.
Due to the adoption of the technical scheme, the invention has the beneficial effects that:
1. the invention relates to a grinder with a band-type brake component.A band-type brake mechanism for preventing a transmission shaft from smoothly rotating is arranged on a motor shell, and the band-type brake mechanism is unlocked based on an insert block which is connected with a protective cover into a whole structure; therefore, when the protective cover is not installed, the brake assembly can be abutted against the outer circumferential surface of the transmission shaft under the deformation action of the return spring, and even if the motor is started at the moment, the transmission shaft cannot normally rotate and cannot perform test operation on the basis of the abutted friction force; in order to test the machine, the protective cover is mounted on the grinding wheel, and the transmission shaft can be smoothly rotated through the friction force of the inserted block unlocking band-type brake mechanism on the transmission shaft so as to perform related machine testing operation; therefore, when the grinder is tested for maintenance and the like, the condition that the grinder can be tested only by installing the protective cover is set, so that the related workers can be ensured to operate according to the rules, and the safety problem caused by the nonstandard operation during the test of the grinder is effectively avoided;
2. according to the grinder with the band-type brake assembly, the outer circumferential surface of the transmission shaft is internally tangent to the concave surface of the brake pad, so that the contact surface between the transmission shaft and the brake assembly is increased, the friction force between the transmission shaft and the brake assembly is increased, and the stability of the locking state of the band-type brake assembly on the transmission shaft is effectively ensured.
Drawings
In order to more clearly illustrate the technical solution of the embodiment of the present invention, the drawings needed to be used in the embodiment will be briefly described below, and it should be understood that the proportional relationship of each component in the drawings in this specification does not represent the proportional relationship in the actual material selection design, and is only a schematic diagram of the structure or the position, in which:
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is an enlarged view of the upper side of FIG. 1;
FIG. 3 is a schematic view of the brake unit abutting against the transmission shaft;
fig. 4 is a top view of fig. 3.
Reference numerals in the drawings indicate:
1-a motor, 2-a transmission shaft, 3-a grinding wheel, 4-a protective cover, 5-a flange ring, 6-a connecting disc, 7-a supporting cylinder, 8-a fastening piece, 9-a bottom plate, 10-a supporting plate, 11-a contact shaft, 12-a return spring, 13-a sliding block, 14-a sliding groove, 15-an inserting block, 16-a braking plate, 17-a braking sheet and 18-a positioning pin.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the detailed description and specific examples, while indicating the preferred embodiment of the invention, are intended for purposes of illustration only and are not intended to limit the scope of the invention.
The present invention will be described in detail with reference to fig. 1 to 4.
Example 1
As shown in fig. 1 to 4, the grinder with a band-type brake assembly of the present invention comprises a motor 1, a grinding wheel 3 coaxially mounted on a transmission shaft 2 of the motor 1, and a protective cover 4 fixed on a housing of the motor 1 and covering one side of the grinding wheel 3, wherein the protective cover 4 is fixed on the housing of the motor 1 through a connecting mechanism, the connecting mechanism comprises a connecting assembly and a band-type brake assembly, the connecting assembly comprises a flange ring 5, a connecting disc 6, a supporting cylinder 7 and a fastening member 8, the flange ring 5 is sleeved on the housing of the motor 1, the connecting disc 6 and the supporting cylinder 7 are both sleeved on the transmission shaft 2, the inner hole diameter of the connecting disc is larger than the outer diameter of the grinding wheel 3, one end of the supporting cylinder 7 is connected with the connecting disc 6, the other end of the supporting cylinder is abutted against the flange ring 5, the fastening member 8 detachably connects the connecting disc 6 and the flange ring 5, and the protective cover 4 is fixed on the connecting disc 6;
the band-type brake assembly comprises a base plate 9 which is sleeved on the transmission shaft 2 and fixedly connected with the shell of the motor 1 and a band-type brake unit which is slidably mounted on the base plate 9, a contact shaft 11 which is fixed on the base plate 10, a brake assembly which is fixed on one end of the base plate 10 close to the transmission shaft 2 and a return spring 12, one end of the return spring is connected with the base plate 10, the other end of the return spring is connected with the base plate 10, and the brake assembly can be abutted to the outer circumferential surface of the transmission shaft 2 under the deformation action of the return spring 12;
an insert block 15 is arranged at one end of the connecting disc 6 facing the bottom plate 9, an inclined surface is arranged on one side of the insert block 15 far away from the axis of the transmission shaft 2, and the distance between the inclined surface and the axis of the transmission shaft 2 is gradually increased along with the distance from the bottom plate 9; when the supporting cylinder 7 is abutted against the flange ring 5, the insert 15 is inserted into one side of the contact shaft 11 close to the transmission shaft 2, the inclined surface of the insert is contacted with the outer circumferential surface of the contact shaft 11, and the transmission shaft 2 is pushed towards one side far away from the transmission shaft 2 until the brake component is separated from the contact with the transmission shaft 2.
In order to facilitate radial positioning of the connecting assembly during installation, a plurality of positioning pins 18 are preferably threaded onto the flange ring 5, the axes of the positioning pins 18 are parallel to the axis of the transmission shaft 2, and one end of each positioning pin 18, which is far away from the flange ring 5, movably penetrates through the connecting disc 6.
When the grinding machine has a fault, the components such as the connecting component, the grinding wheel and the like are disassembled, and the fault is eliminated; after the fault removal is finished, the installation is carried out according to the following steps:
s1, mounting one end of each positioning pin 18 on a flange ring 5 in a threaded manner;
s2, coaxially installing the grinding wheel 3 on a transmission shaft 2 of the motor 1;
s3, sequentially penetrating the supporting cylinder 7 and the connecting disc 6 through the grinding wheel 3 and then sleeving the transmission shaft 2 between the shell of the motor 1 and the grinding wheel, enabling one end, far away from the flange ring 5, of the pin shaft 18 to penetrate through a through hole, matched with the connecting disc 6, in the connecting disc 6 to move towards the motor body, inserting the inserting block 15 into one side, close to the transmission shaft 2, of the contact shaft 11, enabling the inclined surface of the inserting block to be in contact with the outer circumferential surface of the contact shaft 11, pushing the transmission shaft 2 towards one side, far away from the transmission shaft 2, until the brake assembly is separated from the transmission shaft 2, enabling one end, far away from the connecting disc 6, of the supporting cylinder 7 to be abutted against the flange ring 5 at the moment, and increasing the deformation amount of the return spring 12;
and S4, connecting the connecting disc 6 with the flange ring 5 by using a fastener 8, so that the protective cover is covered on the grinding wheel, and the brake of the brake component on the transmission shaft 2 is released, so that the transmission of the transmission shaft 2 is facilitated, and the subsequent related test machine operation is favorably carried out smoothly.
In the invention, a band-type brake mechanism for preventing the transmission shaft 2 from smoothly rotating is arranged on the shell of the motor, and the band-type brake mechanism is unlocked based on an inserting block 15 which is connected with the protective cover into an integral structure; therefore, when the protective cover is not installed, the brake assembly can be abutted against the outer circumferential surface of the transmission shaft 2 under the deformation action of the return spring 12, and even if the motor is started at the moment, the transmission shaft cannot normally rotate and cannot perform machine testing operation based on the abutted friction force; in order to test the machine, the protective cover must be mounted on the grinding wheel, and the insert block 15 unlocks the friction force of the contracting brake mechanism on the transmission shaft 2, so that the transmission shaft can smoothly rotate, and the relevant machine testing operation can be carried out. Therefore, when the grinder is tested for maintenance and the like, the condition that the grinder can be tested only by installing the protective cover is set, so that the related workers can be ensured to operate according to the regulations, and the safety problem caused by the fact that the operation is not standard when the grinder is tested is effectively avoided.
Example 2
This embodiment is described with respect to the sliding connection between the brake unit and the base plate 9 in embodiment 1.
As shown in fig. 1, fig. 2 and fig. 3, in the present invention, a sliding slot 13 is provided on the bottom plate 9, the axis of the sliding slot 13 perpendicularly intersects with the axis of the transmission shaft 2, a sliding block 14 protrudes from one side of the support plate 10 close to the bottom plate 9, and the sliding block 14 is inserted into the sliding slot 13 and is in sliding fit therewith.
Furthermore, one end of the sliding groove 13 close to the transmission shaft 2 is a closed end, the return spring 12 is located in the sliding groove 13 and located between the sliding block 14 and the transmission shaft 2, and two ends of the return spring are respectively connected with the sliding block 14 and one end of the sliding groove 13 close to the transmission shaft 2.
At this time, the brake assembly can be brought into abutment with the outer circumferential surface of the propeller shaft 2 by the tensile deformation of the return spring 12.
Correspondingly, when the return spring is positioned on the side of the sliding block 14 far away from the transmission shaft 2, the brake component can be abutted against the outer circumferential surface of the transmission shaft 2 under the compression deformation action of the return spring 12.
Example 3
The brake assembly is implemented as follows: as shown in fig. 2, the brake assembly includes a brake plate 16 coupled to the support plate 10 and a brake pad 17 fixed to a side wall of the brake plate 16 adjacent to the driving shaft 2.
Furthermore, the brake plate 16 and the brake pad 17 are both bent into cylindrical arc-shaped plate-shaped structures which are coaxial with each other, the inner concave surfaces of the cylindrical arc-shaped plate-shaped structures face the transmission shaft, the outer convex surface of the brake pad 17 is connected with the inner concave surface of the brake plate 16, the radius of the inner concave surface of the brake pad 17 is consistent with that of the transmission shaft 2, and the outer circumferential surface of the transmission shaft 2 can be inscribed in the inner concave surface of the brake pad 17 under the deformation action of the return spring 12.
The outer circumferential surface of the transmission shaft 2 is internally tangent to the concave surface of the brake pad 17, so that the contact surface between the transmission shaft 2 and the brake assembly is increased, the friction force between the transmission shaft 2 and the brake assembly is increased, and the stability of the locking state of the brake assembly on the transmission shaft 2 is effectively ensured.
Example 3
Preferably, the fastener 8 is a long bolt, the tail end of the rod part of the long bolt movably penetrates through the outer edge of the connecting disc 6 and then is in threaded connection with the flange ring 5, and the head part of the long bolt is abutted with one side, far away from the flange ring 5, of the connecting disc 6.
Example 4
In this scheme, band-type brake unit and inserted block 15 all have two, and its axis central symmetry along transmission shaft 2 distributes, inserted block 15 respectively with a band-type brake unit cooperation. The contracting brake units are symmetrically arranged, so that the friction force between the transmission shaft 2 and the brake assembly can be further increased, and the stability of the locking state of the contracting brake assembly on the transmission shaft 2 is effectively ensured.
Example 5
Preferably, the opening size of the sliding groove 14 is smaller than the size of the groove bottom, preferably, the sliding groove is a dovetail groove, and the shape and the size of the cross section of the sliding block are consistent with those of the cross section of the sliding groove.
In the band-type brake unit, preferably, two support plates 10 are slidably mounted on the base plate 6 and are respectively located at two ends of the contact shaft 11, two ends of the contact shaft 11 are respectively connected with one support plate 10, and two ends of one side of the brake assembly far away from the transmission shaft 1 are respectively connected with one support plate 10, as shown in fig. 4.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (8)
1. The utility model provides a grinder with band-type brake subassembly, includes motor (1), coaxial arrangement emery wheel (3) on transmission shaft (2) of motor (1) and fix on motor (1) shell and cover protection casing (4) of establishing one side of emery wheel (3), its characterized in that: the protection cover (4) is fixed on a shell of the motor (1) through a connecting mechanism, the connecting mechanism comprises a connecting assembly and a band-type brake assembly, the connecting assembly comprises a flange ring (5), a connecting disc (6), a supporting cylinder (7) and a fastener (8), the flange ring (5) is sleeved on the shell of the motor (1), the connecting disc (6) and the supporting cylinder (7) are sleeved on the transmission shaft (2), the aperture of an inner hole of the connecting disc (6) is larger than the outer diameter of the grinding wheel (3), one end of the supporting cylinder (7) is connected with the connecting disc (6), the other end of the supporting cylinder is abutted against the flange ring (5), the connecting disc (6) is detachably connected with the flange ring (5) through the fastener (8), and the protection cover (4) is fixed on the connecting disc (6);
the band-type brake assembly comprises a bottom plate (9) which is sleeved on the transmission shaft (2) and is fixedly connected with the shell of the motor (1) and a band-type brake unit which is slidably installed on the bottom plate (9), a contact shaft (11) which is fixed on the support plate (10), a brake assembly which is fixed on the support plate (10) and close to one end of the transmission shaft (2), and a return spring (12) of which one end is connected with the support plate (10) and the other end is connected with the support plate (10), wherein the brake assembly can be abutted to the outer circumferential surface of the transmission shaft (2) under the deformation action of the return spring (12);
an insert block (15) is arranged at one end of the connecting disc (6) facing the bottom plate (9), one side of the insert block (15) far away from the axis of the transmission shaft (2) is an inclined plane, and the distance between the inclined plane and the axis of the transmission shaft (2) is gradually increased along with the distance from the insert block (15) far away from the bottom plate (9); when the supporting cylinder (7) is abutted to the flange ring (5), the insert block (15) is inserted into one side of the contact shaft (11) close to the transmission shaft (2), the inclined surface of the insert block is contacted with the outer circumferential surface of the contact shaft (11), and the transmission shaft (2) is pushed towards one side far away from the transmission shaft (2) until the brake component is separated from the contact with the transmission shaft (2).
2. The grinder with a brake assembly as claimed in claim 1, wherein: the bottom plate (9) is provided with a sliding groove (13), the axis of the sliding groove (13) is vertically intersected with the axis of the transmission shaft (2), one side of the support plate (10) close to the bottom plate (9) protrudes outwards to form a sliding block (14), and the sliding block (14) is inserted into the sliding groove (13) and is in sliding fit with the sliding groove.
3. The grinder with a band-type brake assembly as claimed in claim 2, wherein: the one end that is close to transmission shaft (2) on spout (13) is the blind end, return spring (12) are arranged in spout (13) to be arranged in between slider (14) and transmission shaft (2), its both ends are connected with the one end that is close to transmission shaft (2) on slider (14) and spout (13) respectively.
4. The grinder with a brake assembly as claimed in claim 1, wherein: the brake component comprises a brake plate (16) connected with the support plate (10) and a brake pad (17) fixed on the side wall of the brake plate (16) close to one side of the transmission shaft (2).
5. The grinder with a brake assembly as claimed in claim 4, wherein: brake block (16) and brake block (17) all bend into coaxial cylinder arc platelike structure each other, and the concave surface all faces the transmission shaft in it, and the outer convex surface of brake block (17) is connected with the interior concave surface of brake block (16), the interior concave surface radius of brake block (17) is unanimous with the radius of transmission shaft (2), and can make the interior concave surface of outer periphery inscribe in brake block (17) of transmission shaft (2) under the deformation effect of return spring (12).
6. The grinder with a brake assembly as claimed in claim 1, wherein: the flange ring (5) is connected with a plurality of positioning pins (18) in a threaded mode, the axes of the positioning pins (18) are parallel to the axis of the transmission shaft (2), and one end, far away from the flange ring (5), of each positioning pin movably penetrates through the connecting disc (6).
7. The grinder with a brake assembly according to any one of claims 1 to 6, wherein: the fastener (8) is a long bolt, the tail end of the rod part of the fastener movably penetrates through the outer edge of the connecting disc (6) and then is in threaded connection with the flange ring (5), and the head of the fastener is abutted to one side, far away from the flange ring (5), of the connecting disc (6).
8. The grinder with a brake assembly according to any one of claims 1 to 6, wherein: band-type brake unit and inserted block (15) all have two, and its axial line central symmetry along transmission shaft (2) distributes, inserted block (15) respectively with a band-type brake unit cooperation respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011350622.9A CN112496960B (en) | 2020-11-26 | 2020-11-26 | Grinder with band-type brake assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011350622.9A CN112496960B (en) | 2020-11-26 | 2020-11-26 | Grinder with band-type brake assembly |
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| Publication Number | Publication Date |
|---|---|
| CN112496960A CN112496960A (en) | 2021-03-16 |
| CN112496960B true CN112496960B (en) | 2022-11-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011350622.9A Active CN112496960B (en) | 2020-11-26 | 2020-11-26 | Grinder with band-type brake assembly |
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2020
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|---|---|---|---|---|
| US4059930A (en) * | 1975-07-30 | 1977-11-29 | The Black And Decker Manufacturing Company | Removable guard arrangement for a power tool having a rotating head for performing work on a workpiece |
| CN2767056Y (en) * | 2004-10-22 | 2006-03-29 | 江苏省苏美达五金工具有限公司 | Electric tool for sanding or polishing |
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