CN113374818B - Multidimension degree safety auto-lock friction disc and stopper - Google Patents
Multidimension degree safety auto-lock friction disc and stopper Download PDFInfo
- Publication number
- CN113374818B CN113374818B CN202110731299.8A CN202110731299A CN113374818B CN 113374818 B CN113374818 B CN 113374818B CN 202110731299 A CN202110731299 A CN 202110731299A CN 113374818 B CN113374818 B CN 113374818B
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- plate
- friction plate
- brake
- core
- braking
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D69/00—Friction linings; Attachment thereof; Selection of coacting friction substances or surfaces
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D65/00—Parts or details
- F16D65/14—Actuating mechanisms for brakes; Means for initiating operation at a predetermined position
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D66/00—Arrangements for monitoring working conditions, e.g. wear, temperature
- F16D66/02—Apparatus for indicating wear
- F16D66/021—Apparatus for indicating wear using electrical detection or indication means
- F16D66/022—Apparatus for indicating wear using electrical detection or indication means indicating that a lining is worn to minimum allowable thickness
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D2127/00—Auxiliary mechanisms
- F16D2127/06—Locking mechanisms, e.g. acting on actuators, on release mechanisms or on force transmission mechanisms
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Braking Arrangements (AREA)
Abstract
The invention provides a multidimensional safe self-locking friction plate and a brake comprising the friction plate, wherein a metal core plate mechanism for safe braking is arranged in the friction plate, so that the strength of the friction plate can be improved, the times of reliable emergency braking of the brake are improved, and meanwhile, a radial safe braking device and a radial safe braking device are arranged; through the connection of the sliding mechanism between the slave moving plate and the master moving plate, the equivalent friction outer diameter of the friction plate can be increased after the friction plate is radially broken, so that the braking torque is increased in the radial direction; no matter when the friction plate is broken in the radial direction or in the axial direction, the brake can be disabled and can be effectively kept in the original position and locked through the design of the friction plate, and therefore safe prompt information is sent.
Description
Technical Field
The invention relates to the technical field of braking, in particular to a friction plate capable of realizing multi-dimensional safe self-locking and a brake using the friction plate.
Background
At present, an electromagnetic brake is an important basic part, integrates mechanical, electrical and electronic technologies into a whole, and is mainly used for precise control and braking of a rotating mechanism (such as a motor device and the like).
The brake is arranged in the servo motor, when the servo motor works, the brake carries out emergency braking for many times under extremely severe conditions, the friction plate is broken/rated torque fails due to repeated abrasion, the brake fails, the motor applied to equipment or machinery is not controlled, and the machinery or equipment freely swings to cause personnel safety problems. Usually, the bending strength of the friction plate is between 40 and 70MPa. The development trend of the servo motor and accessories thereof is towards high performance and miniaturization, and the installation space of the brake is limited. The higher the brake torque request at equal volume. In this case, the mechanical properties of the composite are clearly insufficient. After the reliability test, the friction plate is seriously worn, and when the friction plate does not reach the rated torque, no warning information exists.
Therefore, a friction plate and a brake which can brake safely and can prompt when the friction plate does not reach rated torque are urgently needed at present.
Disclosure of Invention
In order to solve the problems, the invention provides a multi-dimensional safety self-locking friction plate and a brake comprising the friction plate, wherein a metal core plate mechanism for safe braking is arranged in the friction plate, so that the strength of the friction plate can be improved, the frequency of reliable emergency braking of the brake is improved, meanwhile, a radial safe braking device and a radial safe braking device are arranged, if the friction plate is axially broken in the braking process, the connectivity of the friction plate can be ensured through an elastic mechanism between the core plates, and meanwhile, a spring for compressing and storing force is elastically released, so that the braking torque of the friction plate in the axial direction is increased; through the connection of the sliding mechanism between the slave moving plate and the master moving plate, the equivalent friction outer diameter of the friction plate can be increased after the friction plate is radially broken, so that the braking torque is increased in the radial direction; no matter when the friction plate is broken in the radial direction or in the axial direction, the brake can be disabled and can be effectively kept in the original position and locked through the design of the friction plate, and therefore safe prompt information is sent.
No matter the radial torque and the axial torque are increased, the motor is in a locking state, braking cannot be relieved, and abnormal information such as excessive abrasion/damage of the friction plate is prompted. The motor is prompted to be replaced for maintenance, and the motor can be effectively kept in place and locked after the brake fails.
The invention relates to a multi-dimensional safety self-locking friction plate which comprises a body and a mounting hole formed in the middle of the body, wherein a safety braking mechanism is arranged in the body and comprises an axial braking device and/or a radial braking device.
According to further optimization of the technical scheme, the axial braking device comprises two core plates which are oppositely arranged, and a force-storing elastic mechanism is arranged between the two core plates.
According to the technical scheme, the elastic mechanism is an auxiliary brake spring, the core plates are provided with a plurality of fixed blocks, the fixed blocks on the two core plates are arranged oppositely, and the auxiliary brake spring is arranged between the two opposite fixed blocks.
According to the technical scheme, the elastic mechanisms are arranged in pairs in the radius direction of the core plate.
According to the technical scheme, the radial braking device is of a core plate structure, the core plate is composed of a main moving plate and a secondary moving plate, the main moving plate and the secondary moving plate are connected through a sliding mechanism, and the sliding mechanism is used for increasing the outer diameter of the radial braking device when the friction plate is broken.
According to further optimization of the technical scheme, the sliding mechanism comprises a convex column arranged on the main moving plate and an arc-shaped hole arranged on the auxiliary moving plate, and the convex column is arranged in the arc-shaped hole in a sliding mode.
In the technical scheme of the invention, a circular closed-loop core plate is formed in the body through the main moving plate and the auxiliary moving plates, and the circumference of the core plate comprises an even number of main moving plates arranged at intervals and an even number of auxiliary moving plates arranged at intervals.
According to the further optimization of the technical scheme, the core plate is made of metal materials.
A brake comprises a stator, a coil, a baffle plate, a square wheel, an armature, a compression spring, a column sleeve and the multi-dimensional safety self-locking friction plate.
Drawings
The invention will be described in more detail hereinafter on the basis of embodiments and with reference to the accompanying drawings.
FIG. 1 is a schematic cross-sectional view of a brake according to the present invention;
FIG. 2 is a schematic top view of the multi-dimensional safety friction plate of the present invention;
FIG. 3 is a schematic structural diagram of the core board of the present invention in an initial state;
FIG. 4 is a schematic structural view of the friction plate of the present invention in a released state with the core plate broken away from a right angle;
FIG. 5 is a schematic cross-sectional view of the multi-dimensional safety friction plate in a normal operating state and a partially enlarged view (right side) of the safety brake mechanism according to the present invention;
fig. 6 is a schematic cross-sectional structure view of the multi-dimensional safety friction plate in a fracture state.
In the drawings, like parts are provided with like reference numerals. The figures are not drawn to scale.
Reference numerals: 1-a stator; 2-a coil; 3, friction plate; 31-a body; 311-safety braking mechanism; 32-mounting holes; 33-a core plate; 312-a main motion plate; 313-slave sports board; 314-fixed block; 3121-a boss; 3131-an arc-shaped hole; 34-an auxiliary braking spring; 4-a baffle plate; 5-square wheel; 6-an armature; 7-compression spring; 8-column sleeve; 9-outgoing line.
Detailed Description
The invention will be further described with reference to fig. 1-6.
As shown in fig. 2, the invention provides a multi-dimensional safety self-locking friction plate 3, which comprises a body 31 and a mounting hole 32 formed in the middle of the body 31, wherein the body 31 of the friction plate 3 is made of a composite material as in the prior art, comprises friction powder, rubber, metal powder, glass fiber and other materials, and is formed by die casting under the conditions of high temperature and high pressure, the mounting hole 32 is used for connecting with a square wheel 5 of a brake, and a safety brake mechanism 311 capable of being started when the friction plate 3 is broken is arranged in the body 31, so that the brake corresponding to the friction plate 3 is locked and mounted. In order to increase the flexibility of use, an axial braking device and a radial braking device may be provided in the safety braking mechanism 311, or any one of the two braking devices may be provided, in this embodiment, it is preferable to provide the axial braking device and the radial braking device at the same time, so that the friction plate 3 is safer when in use, and the effect of safety braking and locking the brake can be achieved no matter in which direction the friction plate breaks.
As shown in fig. 5 and fig. 6, a specific axial braking device includes two core plates 33 disposed opposite to each other, and a force accumulation elastic mechanism is disposed between the two core plates 33, and the force accumulation value of the elastic mechanism is set within a proper range through limited experiments, and preferably, the elastic mechanism is an auxiliary braking spring 34, that is, the auxiliary braking spring 34 is placed in a manufacturing mold of the friction plate 3 in a compressed state during casting of the friction plate 3 to mold the friction plate 3, so that when the friction plate 3 is broken, the reserved elastic force can be released, thereby increasing the braking torque of the friction plate 3 in the axial direction to achieve a brake locking state, and in order to better fix the auxiliary braking spring 34, a plurality of fixing blocks 314 are disposed on the core plates 33, and the fixing blocks 314 on the two core plates 33 are disposed opposite to each other, and the auxiliary braking spring 34 is mounted between the two opposite fixing blocks 314. In order to ensure that the accumulated force in the auxiliary braking spring 34 is released to achieve the effect of increasing the axial braking torque, it is preferable that two elastic mechanisms are arranged in the radial direction of the core plate 33, so that the using effect can be better achieved.
In order to make the brake design reasonable, an axial brake device is matched, as shown in fig. 3 and 4, the radial brake device is in a core plate 33 structure, the core plate 33 is composed of a main moving plate 312 and a secondary moving plate 313 which are in clearance fit, a circular closed-loop core plate 33 is formed in the body 31 through the main moving plate 312 and the secondary moving plate 313, the main moving plate 312 and the secondary moving plate 313 are connected through a sliding mechanism, the specific sliding mechanism comprises a convex column 3121 on the main moving plate 312 and an arc-shaped hole 3131 (which can be a blind groove or a through groove, as long as the convex column 3121 is not slipped out in the arc-shaped hole 3131) arranged on the secondary moving plate 313, and the convex column 3121 is preset at an initial position which minimizes the diameter of the core plate 33 in the process of casting the friction plate 3 by slidingly arranging the convex column 3121 in the arc-shaped hole 3131, so as to ensure that in the case of breaking at the right angle of the friction plate 3, the main moving plate 312 and the secondary moving plate 313 increase the diameter of the brake torque of the brake 33 through relative movement of the sliding mechanism, thereby increasing the radial brake effect of the brake. The core plate 33 of the preferred embodiment includes two spaced-apart main moving plates 312 and two spaced-apart sub moving plates 313 in the circumference thereof.
In a further optimization of the technical solution of the present invention, the core plate 33 is made of a metal material.
The brake shown in fig. 1 comprises a stator 1, a coil 2, a baffle 4, a square wheel 5, an armature 6, a compression spring 7, a column sleeve 8, an outgoing line 9 and the multi-dimensional safety self-locking friction plate 3. At the beginning of manufacture, the spring fixing block 314 is integrally formed on the main moving plate 312 and the auxiliary moving plate 313 of the core plate 33 of the friction plate 3. The main moving plate 312 and the secondary moving plate 313 form a clearance fit through an arc-shaped hole 3131 and a convex column 3121, and the preferred single-sided core plate 33 of the present embodiment is formed by combining 2 main moving plates 312 and 2 secondary moving plates 313, wherein the fixing blocks 314 of the two opposite core plates 33 are oppositely arranged, and the auxiliary brake spring 34 is placed between the two opposite fixing blocks 314. The integral assembly is placed in a mold, and is injected with a conventional friction material for injection molding through a casting process in cooperation with a simple auxiliary tool, and the auxiliary brake spring 34 is in a contracted state with pressure stored during manufacturing.
When the brake is used in a brake, during emergency braking, the friction plate 3 is worn to a set value (namely, the preset thickness of the safety brake device from the friction material in the outer side of the friction plate 3 body 31), the pressure formed by the force generated by the auxiliary brake spring 34 due to the internal stress existing in the friction plate 33 exceeds the bending strength of the current friction plate 3 structure, the friction plate 3 is disconnected from the middle, and the contraction force of the auxiliary brake spring 34 is released. The braking torque increases due to the interaction between the compression spring 7 and the auxiliary brake spring 34, which is an axial torque brake. If the friction plates 3 are broken at right angles, the connectivity of the friction plates 3 can be ensured by the connection structure formed by the main moving plate 312 and the sub moving plate 313 on the core plate 33. Meanwhile, by the sliding connection mechanism, the main moving plate 312 and the sub moving plate 313 move outward, so that the equivalent friction outer diameter is increased, and the braking torque is increased, which is radial torque braking.
No matter the radial torque and the axial torque are increased, the motor is in a locking state, the braking cannot be released, and abnormal information such as excessive abrasion/damage of the friction plate 3 is prompted at the moment. Prompting maintenance of motor needing to be replaced
In the description of the present invention, it is to be understood that the terms "upper", "lower", "bottom", "top", "front", "rear", "inner", "outer", "left", "right", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the present invention.
While the invention has been described with reference to a preferred embodiment, various modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the invention. In particular, the technical features mentioned in the embodiments can be combined in any way as long as there is no structural conflict. It is intended that the invention not be limited to the particular embodiments disclosed, but that the invention will include all embodiments falling within the scope of the appended claims.
Claims (8)
1. The utility model provides a multidimension degree safety auto-lock friction disc, includes the body and sets up the mounting hole at body middle part, its characterized in that: a safety braking mechanism is arranged in the body and comprises a radial braking device;
the radial braking device is of a core plate structure, the core plate is composed of a main moving plate and a secondary moving plate, the main moving plate and the secondary moving plate are connected through a sliding mechanism, and the sliding mechanism is used for increasing the outer diameter of the radial braking device when a friction plate is broken.
2. A multi-dimensional safety self-locking friction plate according to claim 1, wherein the safety brake mechanism further comprises an axial brake device, the axial brake device comprises two core plates which are oppositely arranged, and a force-storing elastic mechanism is arranged between the two core plates.
3. A multi-dimensional safety self-locking friction plate according to claim 2, wherein the elastic mechanism is an auxiliary braking spring, a plurality of fixing blocks are arranged on the core plate, the fixing blocks on two core plates are oppositely arranged, and the auxiliary braking spring is installed between the two opposite fixing blocks.
4. A multi-dimensional safety self-locking friction plate according to claim 2 or 3, wherein the elastic mechanisms are arranged in pairs in the radial direction of the core plate.
5. The friction plate of claim 1, wherein the sliding mechanism comprises a protruding pillar disposed on the primary moving plate and an arc hole disposed on the secondary moving plate, and the protruding pillar is slidably disposed in the arc hole.
6. A multi-dimensional safety self-locking friction plate according to claim 1, wherein a circular closed-loop core plate is formed by the main motion plate and the slave motion plates in the body, and the circumference of the core plate comprises an even number of the main motion plates arranged at intervals and an even number of the slave motion plates arranged at intervals.
7. A multi-dimensional safety self-locking friction plate according to claim 1 or 2, wherein the core plate is made of a metal material.
8. A brake, which is characterized by comprising a stator, a coil, a baffle plate, a square wheel, an armature, a compression spring, a column sleeve and the multi-dimensional safety self-locking friction plate of any one of the claims 1 to 7,
the coil sets up on the stator, the baffle sets up one side of stator axial, the column casing sets up the baffle with between the stator, armature sets up on the column casing, armature with leave the clearance between the stator, multidimension degree safety auto-lock friction disc sets up armature with between the baffle, the square wheel with multidimension degree safety auto-lock friction disc is connected, compression spring's both ends respectively the butt be in the stator with on the armature.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110731299.8A CN113374818B (en) | 2021-06-29 | 2021-06-29 | Multidimension degree safety auto-lock friction disc and stopper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110731299.8A CN113374818B (en) | 2021-06-29 | 2021-06-29 | Multidimension degree safety auto-lock friction disc and stopper |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113374818A CN113374818A (en) | 2021-09-10 |
| CN113374818B true CN113374818B (en) | 2023-01-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110731299.8A Active CN113374818B (en) | 2021-06-29 | 2021-06-29 | Multidimension degree safety auto-lock friction disc and stopper |
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| CN (1) | CN113374818B (en) |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104154154A (en) * | 2013-05-13 | 2014-11-19 | 方亮 | Redundancy brake block |
| CN205918799U (en) * | 2016-05-04 | 2017-02-01 | 宁波市祥和源汽配有限公司 | Brake block of adjustable friction surface |
| DE102018122385A1 (en) * | 2018-09-13 | 2020-03-19 | Schaeffler Technologies AG & Co. KG | Friction clutch |
| CN209083875U (en) * | 2018-11-15 | 2019-07-09 | 贵州玄武岩新材料工程技术开发有限公司 | Basalt fibre brake block and vehicle |
| CN209725038U (en) * | 2019-03-25 | 2019-12-03 | 杭州立全鑫摩擦材料有限公司 | A kind of locking electrical automobile copper-base friction plate |
| CN110645291B (en) * | 2019-09-24 | 2020-07-07 | 珠海格力电器股份有限公司 | Friction plate assembly, brake and motor |
| CN111188854B (en) * | 2020-01-15 | 2021-01-26 | 珠海格力电器股份有限公司 | Brake and motor |
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2021
- 2021-06-29 CN CN202110731299.8A patent/CN113374818B/en active Active
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| CN113374818A (en) | 2021-09-10 |
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