CN109595273B - A friction plate clamping force device providing buffering - Google Patents
A friction plate clamping force device providing buffering Download PDFInfo
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- CN109595273B CN109595273B CN201811624416.5A CN201811624416A CN109595273B CN 109595273 B CN109595273 B CN 109595273B CN 201811624416 A CN201811624416 A CN 201811624416A CN 109595273 B CN109595273 B CN 109595273B
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- 230000003139 buffering effect Effects 0.000 title claims abstract description 19
- 239000000463 material Substances 0.000 claims description 7
- 239000011347 resin Substances 0.000 claims description 6
- 229920005989 resin Polymers 0.000 claims description 6
- 238000012423 maintenance Methods 0.000 abstract description 11
- 230000002159 abnormal effect Effects 0.000 abstract description 4
- 238000013016 damping Methods 0.000 abstract description 3
- 230000007774 longterm Effects 0.000 abstract 1
- 238000005299 abrasion Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 6
- 239000000428 dust Substances 0.000 description 4
- 239000002245 particle Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 239000002783 friction material Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000005457 optimization Methods 0.000 description 2
- 238000010248 power generation Methods 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 241000357293 Leptobrama muelleri Species 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
Classifications
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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
- F16D65/02—Braking members; Mounting thereof
- F16D65/04—Bands, shoes or pads; Pivots or supporting members therefor
- F16D65/092—Bands, shoes or pads; Pivots or supporting members therefor for axially-engaging brakes, e.g. disc brakes
- F16D65/095—Pivots or supporting members therefor
- F16D65/097—Resilient means interposed between pads and supporting members or other brake parts
- F16D65/0973—Resilient means interposed between pads and supporting members or other brake parts not subjected to brake forces
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D7/00—Controlling wind motors
- F03D7/02—Controlling wind motors the wind motors having rotation axis substantially parallel to the air flow entering the rotor
- F03D7/0244—Controlling wind motors the wind motors having rotation axis substantially parallel to the air flow entering the rotor for 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
- F16D65/00—Parts or details
- F16D65/38—Slack adjusters
- F16D65/40—Slack adjusters mechanical
- F16D65/42—Slack adjusters mechanical non-automatic
- F16D65/46—Slack adjusters mechanical non-automatic with screw-thread and nut
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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
- F16D69/02—Composition of linings ; Methods of manufacturing
- F16D69/025—Compositions based on an organic binder
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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
- F16D2069/004—Profiled friction surfaces, e.g. grooves, dimples
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Braking Arrangements (AREA)
Abstract
本发明公开了一种提供缓冲的摩擦片夹紧力装置包括摩擦片组件、制动盘和机架，摩擦片组件安装在机架上，摩擦片组件与制动盘的一个端面相接触，制动盘旋转时通过自身与摩擦片组件接触而产生的摩擦力制动。制动盘就是风力发电机组的偏航制动器的制动盘，固定于机架上的摩擦片组件与制动盘相接触并顶紧，摩擦片组件与制动盘之间的摩擦力就是制动盘的旋转阻尼，可以提供长时间的机械式的制动力，相比于传统的液压制动更加稳定可靠，本发明维修周期长，根据需求可以调至不同的制动力，同时装置自带缓冲作用，消除因为振动、外力或一些其他因素带来的冲击，避免摩擦片与制动盘发生非正常磨损甚至结构损坏，维修时只需要更换摩擦片，维修方便且经济。
The present invention discloses a friction plate clamping force device for providing buffering, including a friction plate assembly, a brake disc and a frame. The friction plate assembly is mounted on the frame, the friction plate assembly contacts one end face of the brake disc, and the brake disc is braked by the friction force generated by its contact with the friction plate assembly when rotating. The brake disc is the brake disc of the yaw brake of the wind turbine generator set, the friction plate assembly fixed on the frame contacts and presses against the brake disc, the friction force between the friction plate assembly and the brake disc is the rotation damping of the brake disc, and can provide a long-term mechanical braking force, which is more stable and reliable than traditional hydraulic braking. The present invention has a long maintenance cycle and can be adjusted to different braking forces according to needs. At the same time, the device has its own buffering effect, which eliminates the impact caused by vibration, external force or some other factors, and avoids abnormal wear and even structural damage of the friction plate and the brake disc. During maintenance, only the friction plate needs to be replaced, and the maintenance is convenient and economical.
Description
Technical Field
The invention relates to the field of wind power generation, in particular to a friction plate clamping force device for buffering.
Background
The wind generating set is usually composed of a yaw system, a braking system, a generator system and the like, the blades for generating electricity are arranged outside the wind generating set and aligned with the wind direction, the wind drives the blades to rotate, and the blades rotate and then drive the generator system to generate electricity.
The wind direction of the nature is continuously changed, so that a yaw system is required to enable the blades of the wind generating set to be aligned to the wind direction, the wind direction is usually detected by a vane, a controller and the like, and the controller controls other components to enable the blades of the wind generating set to turn.
The wind power active hydraulic yaw brake is used for a braking system of a traditional wind power generator set, the wind power active hydraulic yaw brake is a normally closed brake driven by hydraulic pressure, a plurality of pairs of wind power generator sets are used, the number of the wind power generator sets is 4-15 according to different machine types, so that the requirements of a fan on yaw rotation, yaw stopping and yaw cable releasing are met, the wind power generator sets are all over the world, the yaw brake is arranged in a cabin of tens meters or even hundreds of meters of the wind power generator sets, the wind power generator sets are difficult to check and maintain, transitional abrasion of friction materials of friction plates is often met, even the friction materials are worn, the friction plates continuously brake towards a brake disc direction under the action of hydraulic pressure, the steel backs of the friction plates are contacted with the brake disc of a yaw system, the brake disc is damaged due to contact abrasion, and the brake disc is damaged for a long time, so that the brake disc cannot work normally, and the damaged brake disc is required to be repaired. When in maintenance, 1, the maintenance needs to be stopped during the maintenance period, the power generation benefit is influenced, the maintenance cost is high, the manpower and material resources are seriously wasted, and 2, if the brake disc is seriously worn, the brake disc needs to be replaced, the loss is huge, and the cost is from tens of thousands to millions. Such as the damage to the brake disc caused by excessive wear of the friction plate, is currently heavy. In the prior art, a probe rod for detecting the friction plate is added on each brake, but the method needs manual inspection, has relatively high cost and needs manual cooperation.
Traditional mechanical clamping slide bearing does not have buffer, when the fan is in mountain area environment, because there is vortex phenomenon in mountain area wind direction and wind speed, lead to the fan cabin to produce the moment of overturning, can directly produce stress concentration to one of them slide bearing, directly lead to the friction disc to be impacted and crushed when these impact forces are serious, bring serious loss for fan operation and maintenance.
Disclosure of Invention
The invention aims to provide a friction plate clamping force device for buffering so as to solve the problems in the prior art.
In order to achieve the above purpose, the present invention provides the following technical solutions:
A friction plate clamping force device for buffering comprises a friction plate assembly, a brake disc and a frame, wherein the friction plate assembly is arranged on the frame, the friction plate assembly is contacted with one end face of the brake disc, and friction force generated by the contact of the friction plate assembly and the brake disc is braked when the brake disc rotates.
The brake disc is the brake disc of the yaw brake of the wind generating set, the friction plate assembly fixed on the frame is in contact with and tightly supported by the brake disc, the friction force between the friction plate assembly and the brake disc is the rotation damping of the brake disc, and the brake disc can provide mechanical braking force for a long time, so that the brake disc is more stable and reliable compared with the traditional hydraulic braking.
The friction plate assembly comprises a friction plate, a friction plate back plate, an elastic assembly, a cylinder body, a guide rod, a locking nut, an adjusting bolt and an installing bolt, wherein the cylinder body is bar-shaped and blocky, the cross section of the cylinder body is in a right-angle shape, the bottom surface of the concave right-angle side is a right-angle bottom surface, the side surface of the concave right-angle side is a right-angle side surface, the right-angle bottom surface is positioned below the outer circumferential bottom surface of the brake disc, the right-angle side surface faces the circumferential side surface of the brake disc, a plurality of vertical stepped holes are formed between the right-angle bottom surface and the bottom surface of the cylinder body, the cylinder body is fixed to a frame through the installing bolt, the locking nut is arranged on the lower end surface of the cylinder body, the locking nut is positioned below the stepped holes, the adjusting bolt is screwed into the locking nut from bottom to top and stretches into the stepped holes, the guide rod is a cylindrical rod with a circular step, the axis of the guide rod is arranged in the stepped holes, the axis of the guide rod coincides with the axis of the stepped holes, the guide rod bottom surface contacts with the head of the threaded section of the adjusting bolt, the elastic assembly is arranged above the guide rod, the friction plate back plate is a circular flat plate, the friction plate is arranged on the friction plate back plate is arranged at the top of the stepped hole, the friction plate upper end surface is fixed with the friction plate, the upper end surface is in contact with the elastic assembly, and the friction plate is in contact with the lower end surface, and the friction plate is in the friction plate.
The cylinder body is fixed on the frame through the mounting bolt, and the connection is reliable and the installation is dismantled portably. The lock nut arranged on one side of the cylinder body can be used for conveniently adjusting the depth of the adjusting bolt screwed into the cylinder body, when a stepped hole in the cylinder body is not provided with threads, the lock nut is fixed on the cylinder body in a welding mode and the like, screwed thread sections can be provided for the adjusting bolt, the nut serving as a standard component is easy to obtain, the device is convenient to process, manufacture and maintain, when the stepped hole in the cylinder body is provided with threads, the lock nut and the threads in the cylinder body are screwed together with the threads of the adjusting bolt, so that the double-thread locking effect can be achieved, the screw self-locking performance of the bolt is greatly improved, and the screw matching can be used for occasions with larger vibration or more precision. The friction plate, the friction plate backboard, the elastic component and the guide rod are tightly propped against the brake disc by the adjusting bolt, friction is generated between the friction plate and the brake disc, the friction force is used as a stop force when the brake disc moves, the elastic component between the friction plate backboard and the guide rod can provide a certain buffer effect, and when the unit vibrates greatly or the brake disc is suddenly impacted, the friction plate contacted with the brake disc can be retracted for a certain distance to protect the brake disc and the friction plate, and abnormal abrasion caused by overlarge friction force is prevented. The friction force between the friction plate and the brake disc can be controlled by rotating the adjusting bolt, and as known from mechanical knowledge, f=fz×k, wherein f is the friction force between the friction plate and the brake disc, fz is the positive pressure between the friction plate and the brake disc, k is the friction coefficient between the friction plate and the brake disc, and the friction coefficient between the friction plate and the brake disc is different according to factors such as materials and surface roughness, but under the condition of not considering short-time abrasion, the friction coefficient between the friction plate and the brake disc of the device after installation can be considered to be constant, the rotating adjusting bolt can adjust the positive pressure between the friction plate and the brake disc, the deeper the adjusting bolt is screwed in, the larger the elastic component is compressed, the larger the positive pressure between the friction plate and the brake disc is, and the larger the friction force between the friction plate and the brake disc is.
As optimization, a distance of 1-4 times of thread major diameter is reserved between the bolt head of the adjusting bolt and the locking nut after the device is installed. The length of the adjusting bolt is selected according to the size of the device and the required adjusting range of the pretightening force between the friction plate and the brake disc, so that the adjusting bolt can be kept on the premise of the service performance of the device and cannot be exposed too much to be in the way or be abrupt.
Preferably, the surface of the friction plate is provided with a plurality of pits. When the whole plane friction plate is in friction stop with the brake disc, a large amount of heat is easy to generate, the bottoms of the pits arranged on the surface of the friction plate are not in contact with the brake disc, so that friction heating is avoided, the friction plate body in the area can absorb a part of heat conducted by the friction plate body which is in contact with the brake disc around the friction plate body, therefore, the average temperature of the whole friction plate is reduced, in addition, some dust particles adhered to the end face of the brake disc enter the contact surface between the friction plate and the brake disc to easily scratch the friction plate, and pits on the surface of the friction plate can contain the dust particles and the like.
Preferably, the friction plate is a resin-based friction plate. The friction plate is soft, so that the friction plate is worn, only the friction plate is needed to be replaced when the wind generating set is maintained, and the brake disc is not needed to be maintained or replaced, so that the economical efficiency is greatly improved, and meanwhile, the friction plate of the resin-based material is high in friction coefficient, and the requirement of the service performance can be met.
As an optimization, the elastic assembly uses a belleville spring. The belleville springs are in conical disc shapes, can be used in series, bear static or dynamic load acting along the axial direction at the upper inner edge and the lower outer edge, deform after being compressed until being flattened, and the stress distribution of the belleville springs is uniformly reduced from inside to outside, so that the effect of low stroke and high compensation force can be realized. The belleville spring has better contact stability than the spring of ordinary circular cross-section, and axial force is exerted more evenly, and the elastic component uses belleville spring can let the friction disc receive even pretension positive pressure, can not lead to friction disc local wear to be violent because of pretension force's inhomogeneous.
The elastic component comprises a first spring and a second spring, the second spring is positioned on the inner ring of the first spring, the second spring is shorter than the first spring, and the elastic coefficient of the second spring is higher than that of the first spring. The design of two sets of springs is in order that the friction disc has different buffering and yielding properties under different pretightning force occasions, and when little pretightning force, the first spring that elasticity coefficient is low contacts with the friction disc backplate, and the elastic component carries out buffering action promptly when the device slightly vibrates, and when big pretightning force, friction disc backplate and two springs all contact, and the elastic component just can carry out buffering action when the device receives violent disturbance.
Compared with the prior art, the invention has the advantages that the mechanical braking is adopted, the braking is stable and reliable, the maintenance period is long, different braking forces can be regulated, meanwhile, the device has the self-buffering function, the impact caused by vibration, external force or some other factors is eliminated, the abnormal abrasion and even structural damage of the friction plate and the brake disc are avoided, only the friction plate is required to be replaced during maintenance, and the maintenance is convenient and economical.
Drawings
In order that the invention may be more readily understood, a more particular description of the invention will be rendered by reference to specific embodiments that are illustrated in the appended drawings.
FIG. 1 is a front view of the present invention;
FIG. 2 is view A-A of FIG. 1;
FIG. 3 is a schematic view of a friction plate of the present invention;
FIG. 4 is a schematic view of the structure of the friction plate back plate, elastic assembly, cylinder of the present invention;
FIG. 5 is a schematic view of an elastic assembly of the present invention;
FIG. 6 is a top view of the present invention;
fig. 7 is a cross-sectional view of the cylinder of the present invention.
In the figure, the friction plate assembly comprises a 1-friction plate assembly, a 11-friction plate assembly, a 111-pit assembly, a 12-friction plate backboard, a 13-elastic assembly, a 131-first spring, a 132-second spring, a 14-cylinder body, a 141-right-angle bottom surface, a 142-right-angle side surface, a 143-stepped hole, a 15-guide rod, a 16-locking nut, a 17-adjusting bolt, an 18-mounting bolt, a 2-brake disc and a 3-frame.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
As shown in fig. 1, a friction plate clamping force device for providing buffering comprises a friction plate assembly 1, a brake disc 2 and a frame 3, wherein the friction plate assembly 1 is arranged on the frame 3, the friction plate assembly 1 is contacted with one end face of the brake disc 2, and the brake disc 2 is braked by friction force generated by contacting with the friction plate assembly 1 when rotating.
The brake disc 2 is the brake disc of the yaw brake of the wind generating set, the friction plate assembly 1 fixed on the frame 3 is in contact with and tightly pressed against the brake disc 2, the friction force between the friction plate assembly 1 and the brake disc 2 is the rotation damping of the brake disc 2, and the brake disc can provide mechanical braking force for a long time, so that the brake disc is more stable and reliable compared with the traditional hydraulic braking.
As shown in fig. 2, 6 and 7, the friction plate assembly 1 comprises a friction plate 11, a friction plate back plate 12, an elastic assembly 13, a cylinder 14, a guide rod 15, a locking nut 16, an adjusting bolt 17 and a mounting bolt 18, wherein the cylinder 14 is in a bar-shaped block shape, the cross section of the cylinder 14 is in a right angle shape, the bottom surface of an inner concave right-angle side is a right-angle bottom surface 141, the side surface of the inner concave right-angle side is a right-angle side surface 142, the right-angle bottom surface 141 is positioned below the outer circumferential bottom surface of the brake disc 2, the right-angle side surface 142 faces the circumferential side surface of the brake disc 2, a plurality of vertical stepped holes 143 are arranged between the right-angle bottom surface 141 and the bottom surface of the cylinder 14, the cylinder 14 is fixed on the frame 3 through the mounting bolt 18, the locking nut 16 is arranged on the lower end surface of the cylinder 14, the locking nut 16 is positioned below the stepped holes 143, the adjusting bolt 17 is screwed into the locking nut 16 from bottom to top, the guide rod 15 is a cylindrical rod with a circular step, the axis of the guide rod 15 is arranged in the stepped holes 143, the axis of the guide rod 15 coincides with the axis of the stepped holes 143, the guide rod 15 is contacted with the threaded section of the head of the stepped holes 15, the guide rod 15 is contacted with the elastic assembly 12, the friction plate 12 is arranged above the friction plate 12 is contacted with the upper end surface 12, and is contacted with the friction plate 11, and is positioned on the friction plate 12, and is contacted with the friction plate 11.
The cylinder body 14 is fixed on the frame 3 through the mounting bolts 18, so that the connection is reliable and the mounting and the dismounting are simple and convenient. The lock nut 16 arranged on one surface of the cylinder body 14 can be used for conveniently adjusting the depth of screwing the adjusting bolt 17 into the cylinder body 14, when a through hole in the cylinder body 14 is not provided with threads, the lock nut 16 is fixed on the cylinder body 14 in a welding mode and the like, screwed thread sections can be provided for the adjusting bolt 17, a nut serving as a standard part is easy to obtain, the device is convenient to process, manufacture and maintain, when the through hole in the cylinder body 14 is provided with threads, the lock nut 16 and the threads in the cylinder body 14 are screwed together with the threads of the adjusting bolt 17, so that a double-thread locking effect can be achieved, the screw self-locking performance of the bolt is greatly improved, and the thread proportion can be used for occasions with larger vibration or more precision. The friction plate 11, the friction plate back plate 12, the elastic component 13 and the guide rod 15 are tightly propped against the brake disc 2 by the adjusting bolt 17, friction is generated between the friction plate 11 and the brake disc 2, the friction is used as a stopping force when the brake disc 2 moves, the elastic component 13 between the friction plate back plate 12 and the guide rod 15 can provide a certain buffer effect, and when the unit vibrates greatly or the brake disc 2 is impacted suddenly, the friction plate 11 contacted with the brake disc 2 can be retracted for a certain distance to protect the brake disc 2 and the friction plate 11, and abnormal abrasion caused by overlarge friction is prevented. The friction between the friction plate 11 and the brake disc 2 can be controlled by rotating the adjusting bolt 17. Rotating the adjusting bolt 17 can adjust the positive pressure between the friction plate 11 and the brake disc 2, the greater the adjusting bolt 17 is screwed in, the greater the elastic assembly 13 is compressed, the greater the positive pressure between the friction plate 11 and the brake disc 2, and the greater the friction force between the friction plate 11 and the brake disc 2.
As shown in fig. 2, a distance of 1-4 times of the thread diameter is reserved between the bolt head of the adjusting bolt 17 and the locking nut 16 after the device is installed. The length of the adjusting bolt 17 is selected to be suitable according to the whole size of the device and the required adjusting range of the pretightening force between the friction plate 11 and the brake disc 2, so that the adjusting bolt 17 can be kept not to be too much exposed or to be suddenly in the way on the premise of the service performance of the device.
As shown in fig. 3, the friction plate 11 has a plurality of dimples 111 on its surface. When the friction plate on the whole plane is in friction stop with the brake disc 2, a large amount of heat is easily generated, the bottoms of the pits 111 arranged on the surface of the friction plate 11 are not in contact with the brake disc 2, so that friction heating cannot occur, the friction plate 11 sheet body in the area can absorb a part of heat conducted by the friction plate 11 sheet body which is in contact with the brake disc 2 around the friction plate 11 sheet body, the average temperature of the whole friction plate 11 is reduced, in addition, some dust particles adhered to the end surface of the brake disc 2 enter the contact surface between the friction plate 11 and the brake disc 2 to easily scratch the friction plate, and the pits 111 on the surface of the friction plate 11 can contain the dust particles and the like.
The friction plate 11 is a resin-based material friction plate. The friction plate 11 and the brake disc 2 are inevitably worn, the friction plate 11 made of resin-based materials is softer, so that the friction plate 11 is worn, only the friction plate 11 is needed to be replaced when the wind generating set is maintained, and the brake disc 2 is not needed to be maintained or replaced, so that the economical efficiency is greatly improved, and meanwhile, the friction coefficient of the friction plate 11 made of resin-based materials is higher, and the requirement of the service performance can be met.
As shown in fig. 4 and 5, a belleville spring is used for the elastic member 13. The belleville springs are in conical disc shapes, can be used in series, bear static or dynamic load acting along the axial direction at the upper inner edge and the lower outer edge, deform after being compressed until being flattened, and the stress distribution of the belleville springs is uniformly reduced from inside to outside, so that the effect of low stroke and high compensation force can be realized. The belleville springs have better contact stability than the springs with the common circular cross sections, the axial force is applied more uniformly, the elastic component 13 can lead the friction plate 11 to be subjected to uniform pre-tightening positive pressure by using the belleville springs, and the friction plate 11 is not subjected to severe local abrasion caused by uneven pre-tightening force.
As shown in fig. 5, the elastic assembly 13 includes a first spring 13 and a second spring 132, the second spring 132 is positioned at an inner circumference of the first spring 131, the second spring 132 is shorter than the first spring 131, and an elastic coefficient of the second spring 132 is higher than the first spring 131. The design of two sets of springs is in order that friction disc 11 has different buffering and yielding ability under different pretightning force occasions, and the low first spring 131 of elasticity coefficient contacts with friction disc backplate 12 when little pretightning force, and elastic component 13 carries out buffering action promptly when the device slightly vibrates, and when big pretightning force, friction disc backplate 12 contacts with two springs, and elastic component 13 can carry out buffering action when the device receives violent impact.
When the device is used, the friction plate assembly 1 is mounted on the frame 3 through the mounting bolts 18, when the brake disc 2 rotates, the friction plate 11 is always contacted with one end face of the brake disc 2, the friction plate 11 is tightly pressed against the brake disc 2 by screwing the adjusting bolts 17, the movement of the brake disc 2 is stopped due to the fact that friction force is received when the brake disc 2 rotates, the adjusting bolts 17 are screwed into different depths, the friction force received by the brake disc 2 is different, and when the device or the system is impacted, the elastic assembly 13 provides a certain buffering function.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (3)
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811624416.5A CN109595273B (en) | 2018-12-28 | 2018-12-28 | A friction plate clamping force device providing buffering |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811624416.5A CN109595273B (en) | 2018-12-28 | 2018-12-28 | A friction plate clamping force device providing buffering |
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| CN109595273A CN109595273A (en) | 2019-04-09 |
| CN109595273B true CN109595273B (en) | 2024-12-31 |
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| CN201811624416.5A Active CN109595273B (en) | 2018-12-28 | 2018-12-28 | A friction plate clamping force device providing buffering |
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| CN110630673B (en) * | 2019-09-26 | 2021-02-02 | 重庆大学 | New broadband vibration damping device |
| CN115419663A (en) * | 2022-09-23 | 2022-12-02 | 浙江极氪智能科技有限公司 | Brakes and Vehicles |
Citations (2)
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