CN112497072A - Method for preventing grinding machine from being started illegally during maintenance - Google Patents
Method for preventing grinding machine from being started illegally during maintenance Download PDFInfo
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- CN112497072A CN112497072A CN202011350615.9A CN202011350615A CN112497072A CN 112497072 A CN112497072 A CN 112497072A CN 202011350615 A CN202011350615 A CN 202011350615A CN 112497072 A CN112497072 A CN 112497072A
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- 238000012423 maintenance Methods 0.000 title claims abstract description 20
- 238000000034 method Methods 0.000 title claims abstract description 20
- 230000005540 biological transmission Effects 0.000 claims abstract description 95
- 230000001681 protective effect Effects 0.000 claims abstract description 23
- 238000013459 approach Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 claims 2
- 230000000149 penetrating effect Effects 0.000 claims 1
- 238000012360 testing method Methods 0.000 abstract description 8
- 230000009471 action Effects 0.000 description 6
- 230000007246 mechanism Effects 0.000 description 6
- 239000000428 dust Substances 0.000 description 2
- 210000003128 head Anatomy 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229910001651 emery Inorganic materials 0.000 description 1
- 239000012634 fragment Substances 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000013024 troubleshooting Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Classifications
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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
- B24B47/00—Drives or gearings; Equipment therefor
- B24B47/10—Drives or gearings; Equipment therefor for rotating or reciprocating working-spindles carrying grinding wheels or workpieces
- B24B47/12—Drives or gearings; Equipment therefor for rotating or reciprocating working-spindles carrying grinding wheels or workpieces by mechanical gearing or electric power
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Braking Arrangements (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
Abstract
The invention discloses a method for preventing illegal starting of a grinder during maintenance, which comprises the following steps: s1, installing a band-type brake assembly on the end face of the motor of the grinder, which penetrates through the transmission shaft; s2, sleeving a flange ring on the shell of the motor; s3, mounting a connecting component on a grinding wheel protective cover of the grinding machine; s4, mounting a positioning pin on the flange ring in a threaded manner, wherein one end of the positioning pin, which is far away from the flange ring, penetrates through the connecting disc; s5, the connecting disc is axially fastened and connected with the flange ring through a fastener, the insert is inserted into one side of the contact shaft close to the transmission shaft, the inclined surface of the insert is in contact with the outer circumferential surface of the contact shaft, and the transmission shaft is pushed towards one side far away from the transmission shaft. According to the invention, 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 relevant workers can operate according to the rules, and the safety problem caused by the non-standard operation of the grinder during the test is effectively avoided.
Description
Technical Field
The invention relates to the field of grinding wheels, in particular to a method for preventing illegal starting of a grinding wheel machine during maintenance.
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 of motor end. 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 a grinder so as to ensure the operation compliance of related workers and ensure the personal safety of the related workers.
Disclosure of Invention
The invention aims to: the method for preventing the grinding machine from being started illegally during maintenance solves the safety problem caused by illegal operation and starting of the transmission shaft rotation due to the fact that related workers are troublesome when the conventional grinding machine is tested for maintenance and the like.
The technical scheme adopted by the invention is as follows:
the method for preventing the grinding machine from being illegally started during maintenance comprises the following steps:
s1, installing a band-type brake assembly on the end face of a motor of the grinder, which penetrates through a transmission shaft, wherein the band-type brake assembly comprises a bottom plate sleeved on the transmission shaft and fixedly connected with a motor shell and a band-type brake unit slidably installed on the bottom plate, the band-type brake unit comprises a support plate slidably installed on the bottom plate, a contact shaft fixed on the support plate, a brake assembly fixed on one end of the support plate, which is close to the transmission shaft, and a return spring, one end of the return spring is connected with the support plate, the other end of the return spring is connected with the support plate, and the brake assembly can be abutted against the outer circumferential;
s2, sleeving a flange ring on the shell of the motor;
s3, mounting a connecting assembly on a part, connected with a motor shell, of a grinding wheel protective cover of the grinding machine, wherein the connecting assembly comprises a connecting disc, a supporting cylinder and an insert block, the connecting disc and the supporting cylinder are both sleeved on a transmission shaft, the bore diameter of an inner hole of the connecting disc and the bore diameter of the supporting cylinder are both larger than the outer diameter of a grinding wheel, and one end of the supporting cylinder is connected with the connecting disc; the protective cover is fixed on the connecting disc, the inserting block is fixed at one end, facing the bottom plate, of the connecting disc, an inclined surface is arranged on one side, away from the axis of the transmission shaft, of the inserting block, and the distance between the inclined surface and the axis of the transmission shaft is gradually increased along with the distance away from the bottom plate;
s4, mounting a positioning pin with an axis parallel to the axis of the transmission shaft on the flange ring in a threaded manner, wherein one end of the positioning pin, which is far away from the flange ring, penetrates through the connecting disc;
s5, axially fastening and connecting the connecting disc and the flange ring through a fastener until the other end of the supporting cylinder abuts against the flange ring, and along with the approach of the supporting cylinder to the flange ring, the insert block is inserted into one side of the contact shaft close to the transmission shaft, the inclined surface of the insert 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 block.
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 cylindrical arc-shaped plate-shaped structures which are coaxial with each other, the inner concave surfaces of the brake block face the transmission shaft, the outer convex surfaces of the brake block are connected with the inner concave surfaces of the brake block, the radius of the inner concave surfaces of the brake block is consistent with that of the transmission shaft, and the outer circumferential surfaces of the transmission shaft can be internally tangent to the inner concave surfaces of the brake block under the deformation action of the return springs.
Further, a plurality of positioning pins are connected to the flange ring in a threaded manner.
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 discloses a method for preventing illegal starting of a grinder during maintenance, wherein 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; 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 by unlocking the friction force of the band-type brake mechanism to the transmission shaft through the insert block so as to perform related machine testing operation; therefore, when the grinder is tested for overhaul and the like, the condition that the grinder can be tested only by installing the protective cover is set, so that the relevant workers can operate according to the rules, and the safety problem caused by the fact that the operation is not standard when the grinder is tested is effectively avoided;
2. according to the method for preventing the grinding wheel machine from being started illegally during maintenance, the outer circumferential surface of the transmission shaft is internally tangent to the inner 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 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 view showing a state where a transmission shaft is unlocked in the present invention;
FIG. 2 is an enlarged view of the upper side of FIG. 1;
FIG. 3 is a schematic view showing a state in which the brake unit abuts against the transmission shaft;
fig. 4 is a top view of fig. 3.
Reference numerals in the drawings indicate:
1-motor, 2-transmission shaft, 3-grinding wheel, 4-protective cover, 5-flange ring, 6-connecting disc, 7-supporting cylinder, 8-fastening piece, 9-bottom plate, 10-supporting plate, 11-contact shaft, 12-return spring, 13-sliding block, 14-sliding groove, 15-insertion block, 16-braking plate, 17-braking sheet and 18-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
The invention discloses a method for preventing illegal starting of a grinder during maintenance, which comprises the following steps:
s1, installing a brake component on an end surface of the motor 1 of the grinder, which penetrates through the transmission shaft 2, as shown in fig. 1, where the brake component includes a bottom plate 9 sleeved on the transmission shaft 2 and fixedly connected to a housing of the motor 1, and a brake unit slidably installed on the bottom plate 9, and the brake unit includes a support plate 10 slidably installed on the bottom plate 9, a contact shaft 11 fixed on the support plate 10, a brake component fixed on the support plate 10 at an end close to the transmission shaft 2, and a return spring 12 having one end connected to the support plate 10 and the other end connected to the support plate 10, and under the deformation action of the return spring 12, the brake component can be abutted to the outer circumferential surface of the transmission shaft 2;
s2, sleeving a flange ring 5 on the shell of the motor 1;
s3, mounting a connecting assembly on a part, connected with the shell of the motor 1, of the grinding wheel protective cover 4 of the grinding machine, wherein the connecting assembly comprises a connecting disc 6, a supporting cylinder 7 and an insert block 15, the connecting disc 6 and the supporting cylinder 7 are both sleeved on the transmission shaft 2, the aperture of an inner hole of the connecting disc 6 and the aperture of an inner hole of the supporting cylinder 7 are both larger than the outer diameter of the grinding wheel 3, and one end of the supporting cylinder 7 is connected with the connecting disc 6; the protective cover 4 is fixed on the connecting disc 6, the inserting block 15 is fixed at one end of the connecting disc 6 facing the bottom plate 9, one side of the inserting block 15, which is far away from the axis of the transmission shaft 2, is an inclined surface, and the distance from the inclined surface to the axis of the transmission shaft 2 is gradually increased along with the distance from the bottom plate 9;
s4, mounting a positioning pin 18 with an axis parallel to the axis of the transmission shaft 2 on the flange ring 5 in a threaded manner, wherein one end of the positioning pin 18, which is far away from the flange ring 5, penetrates through the connecting disc 6;
s5, the connecting disc 6 and the flange ring 5 are axially and tightly connected through the fastener 8 until the other end of the supporting cylinder 7 is abutted against the flange ring 5, and along with the supporting cylinder 7 approaching the flange ring 5, the insert 15 is inserted into one side of the contact shaft 11, which is 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 to 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 screwed on 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.
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 insert block 15 which is connected with the protective cover into a whole; 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 relevant workers can operate according to the rules, 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, 2 and 3, in the present invention, a sliding slot 13 is provided on the bottom plate 9, the axis of the sliding slot 13 is perpendicular to the axis of the transmission shaft 2, a sliding block 14 is protruded from the 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 contact 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 penetrates through the outer edge of the connecting disc 6 movably and then is in threaded connection with the flange ring 5, and the head part of the long bolt is abutted to 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 method for preventing the grinding machine from being illegally started during maintenance is characterized in that: the method comprises the following steps:
s1, a band-type brake assembly is installed on the end face, penetrating out of a transmission shaft (2), of a motor (1) of the grinder, and comprises a bottom plate (9) sleeved on the transmission shaft (2) and fixedly connected with a shell of the motor (1) and a band-type brake unit slidably installed on the bottom plate (9), the band-type brake unit comprises a supporting plate (10) slidably installed on the bottom plate (9), a contact shaft (11) fixed on the supporting plate (10), a brake assembly fixed on the supporting 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 supporting plate (10) and the other end is connected with the supporting plate (10), and the brake assembly can be abutted to the outer circumferential face of the transmission shaft (2) under the deformation effect of the return spring (12);
s2, sleeving a flange ring (5) on the shell of the motor (1);
s3, mounting a connecting assembly on a grinding wheel protective cover (4) of the grinding machine, which is connected with a shell of the motor (1), wherein the connecting assembly comprises a connecting disc (6), a supporting cylinder (7) and an inserting block (15), 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 is larger than the outer diameter of the grinding wheel (3), and one end of the supporting cylinder (7) is connected with the connecting disc (6); the protective cover (4) is fixed on the connecting disc (6), the inserting block (15) is fixed at one end, facing the bottom plate (9), of the connecting disc (6), an inclined surface is arranged on one side, far away from the axis of the transmission shaft (2), of the inserting block (15), and the distance between the inclined surface and the axis of the transmission shaft (2) is gradually increased along with the distance between the inclined surface and the axis of the transmission shaft (2) and the distance between the inclined surface and the bottom plate (9);
s4, installing a positioning pin (18) with an axis parallel to the axis of the transmission shaft (2) on the flange ring (5) in a threaded manner, wherein one end of the positioning pin (18) far away from the flange ring (5) penetrates through the connecting disc (6);
s5, the connecting disc (6) and the flange ring (5) are axially and tightly connected through the fastener (8) until the other end of the supporting cylinder (7) is abutted against the flange ring (5), and along with the approach of the supporting cylinder (7) to the flange ring (5), the insert block (15) is inserted into one side, close to the transmission shaft (2), of the contact shaft (11), 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 to one side far away from the transmission shaft (2) until the brake assembly is separated from the contact with the transmission shaft (2).
2. The method for preventing illegal starting during grinder maintenance according to claim 1, characterized in that: the bottom plate (9) is provided with a sliding groove (13), the axis of the sliding groove (13) is vertically crossed with the axis of the transmission shaft (2), one side of the support plate (10) close to the bottom plate (9) is protruded 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 method for preventing illegal starting during grinder maintenance according to claim 2, characterized in that: 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 method for preventing illegal starting during grinder maintenance according to claim 1, characterized in that: 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 method for preventing illegal starting during grinder maintenance according to claim 4, wherein the method comprises the following steps: 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 method for preventing illegal starting during grinder maintenance according to claim 1, characterized in that: a plurality of positioning pins (18) are connected to the flange ring (5) in a threaded manner.
7. The method for preventing illegal starting during grinding machine maintenance according to any one of claims 1 to 6, characterized in that: 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 method for preventing illegal starting during grinding machine maintenance according to claims 1-6, characterized in that: the band-type brake unit all has two with inserted block (15), and its axis 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 |
|---|---|---|---|
| CN202011350615.9A CN112497072B (en) | 2020-11-26 | 2020-11-26 | Method for preventing grinding machine from being illegally started during maintenance |
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| CN202011350615.9A CN112497072B (en) | 2020-11-26 | 2020-11-26 | Method for preventing grinding machine from being illegally started during maintenance |
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| CN112497072A true CN112497072A (en) | 2021-03-16 |
| CN112497072B CN112497072B (en) | 2022-07-29 |
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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 |
| DE102009024427A1 (en) * | 2009-06-09 | 2010-12-16 | Metabowerke Gmbh | Protective casing for accommodating drive shaft of angle grinder, has adjusting ring rotatable in peripheral direction opposite to collar, so that ring is adjusted between engaging position and non-engaging position |
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| CN112497072B (en) | 2022-07-29 |
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Effective date of registration: 20231220 Address after: 315000 Que'ao Village, Shangtian Town, Fenghua District, Ningbo City, Zhejiang Province Patentee after: Ningbo Fenghua Sanding Alloy Steel Casting Co.,Ltd. Address before: Room 2403, 24 / F, unit 1, building 7, 109 Haiyang Road, high tech Zone, Chengdu, Sichuan 610000 Patentee before: Zhang Xubin |
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