CN112727679B - Speed reduction device based on friction braking mechanism and wind driven generator braking system - Google Patents
Speed reduction device based on friction braking mechanism and wind driven generator braking system Download PDFInfo
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- CN112727679B CN112727679B CN202011596811.4A CN202011596811A CN112727679B CN 112727679 B CN112727679 B CN 112727679B CN 202011596811 A CN202011596811 A CN 202011596811A CN 112727679 B CN112727679 B CN 112727679B
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- 230000006698 induction Effects 0.000 claims description 10
- 230000002035 prolonged effect Effects 0.000 abstract description 2
- 238000010248 power generation Methods 0.000 description 12
- 238000000034 method Methods 0.000 description 11
- 230000008569 process Effects 0.000 description 11
- 238000006073 displacement reaction Methods 0.000 description 7
- 239000003638 chemical reducing agent Substances 0.000 description 6
- 230000009471 action Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000005489 elastic deformation Effects 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 230000013011 mating Effects 0.000 description 2
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- 230000005611 electricity Effects 0.000 description 1
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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
- F03D7/0248—Controlling wind motors the wind motors having rotation axis substantially parallel to the air flow entering the rotor for braking by mechanical means acting on the power train
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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
- F03D15/00—Transmission of mechanical power
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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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- Wind Motors (AREA)
Abstract
The invention relates to a speed reducing device based on a friction braking mechanism and a wind driven generator braking system. A friction brake mechanism based speed reduction device comprising: the friction braking mechanism is arranged on the supporting seat, and the friction braking mechanism is in driving connection with the friction transmission mechanism. The wind driven generator braking system comprises the speed reducing device based on the friction braking mechanism. The speed reduction device and the wind driven generator braking system based on the friction braking mechanism disclosed by the invention automatically enter a braking state when wind power is too large, so that the wind driven generator is decelerated, the wind driven generator is prevented from running in an overload manner, and the service life of the wind driven generator is prolonged.
Description
Technical Field
The invention relates to the technical field of wind driven generators, in particular to a speed reducing device based on a friction braking mechanism and a wind driven generator braking system.
Background
Wind power generation is a process of converting wind energy into mechanical energy and then converting the mechanical energy into electric energy. The process does not need fuel, does not radiate, does not pollute the air and the environment, and therefore, the wind energy is clean energy.
However, the wind power input to the wind power generation apparatus is not artificially set, but is a magnitude of natural wind depending on the working environment in which the wind power generation apparatus is located, that is, a magnitude of wind power driving the wind power generation apparatus is not controllable. At present, wind power generators on the market are easy to run under overload due to overlarge wind power, and finally, wind power generation equipment is overloaded and burnt out.
Of course, when the wind power of the wind power generation equipment is too large, the protection function is started to protect the wind power generation equipment and prevent the wind power generation equipment from being burnt out due to overload operation. For example, in the invention patent with publication number CN104500337A, when the wind force is too large, the worker needs to manually operate the handle to start the protection mechanism to realize the protection function. Through a manual protection mechanism, on one hand, the wind power needs to be monitored in real time, and the labor cost is high; on the other hand, since the worker knows that the wind force is too large, a certain time is required for the worker to manually complete the protection operation of the protection mechanism, and in this time period, the wind power generation equipment is in an overload state. Therefore, the wind power generation equipment inevitably has an overload state, and thus the protection effect of the wind power generation equipment is not ideal.
Disclosure of Invention
The invention aims to overcome the defects in the prior art, and provides a speed reducing device based on a friction braking mechanism and a wind driven generator braking system.
The purpose of the invention is realized by the following technical scheme:
a friction brake mechanism based speed reduction device comprising: the friction braking mechanism is arranged on the supporting seat and is in driving connection with the friction transmission mechanism.
In one embodiment, the friction drive mechanism includes: the transmission gear is rotatably arranged on the supporting seat, and the follow-up connecting piece is in driving connection with the transmission gear; one end of the first connecting rod is hinged with the follow-up connecting piece;
the friction braking mechanism includes: the movable friction block comprises a movable friction block, a fixed clamping plate, a movable clamping plate, a second connecting rod, a third connecting rod and an elastic connecting rod, wherein the fixed clamping plate and the movable clamping plate are respectively connected with the supporting seat, and the fixed clamping plate and the movable clamping plate are respectively clamped on two sides of the movable friction block; one end of the second connecting rod is hinged with one side of the movable friction block, and the other end of the second connecting rod is hinged with one end of the elastic connecting rod; one end of the third connecting rod is hinged with the other side of the movable friction block, and the other end of the third connecting rod is hinged with the other end of the elastic connecting rod;
the other end of the first connecting rod is connected with the middle part of the elastic connecting rod.
In one embodiment, two sides of the movable friction block are respectively provided with a fixed connecting rod, and the second connecting rod and the third connecting rod are respectively connected with the movable friction block through the fixed connecting rods.
In one embodiment, the fixed clamping plate and the movable clamping plate are respectively provided with a friction guide groove, and the fixed connecting rods are movably arranged in the friction guide grooves in a one-to-one correspondence manner.
In one embodiment, the friction braking mechanism-based speed reduction device further comprises a friction adjusting mechanism, the friction adjusting mechanism comprises a supporting plate and an adjusting screw, the adjusting screw is rotatably connected with the supporting plate, and the adjusting screw is in driving connection with the movable clamping plate.
In one embodiment, the other end of the first connecting rod is provided with a lantern ring, and the lantern ring is movably sleeved in the middle of the elastic connecting rod.
The invention also discloses a wind driven generator braking system, which comprises the speed reducing device based on the friction braking mechanism; the wind driven generator braking system further comprises a wind power induction driving device, and the speed reducing device based on the friction braking mechanism is in driving connection with the wind power induction driving device.
The speed reduction device and the wind driven generator braking system based on the friction braking mechanism disclosed by the invention automatically enter a braking state when wind power is too large, so that the wind driven generator is decelerated, the wind driven generator is prevented from running in an overload manner, and the service life of the wind driven generator is prolonged.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
FIG. 1 is a schematic structural diagram (one) of a friction braking mechanism-based speed reduction device of the present invention;
FIG. 2 is a schematic structural diagram of a friction braking mechanism-based reduction gear of the present invention;
FIG. 3 is a partial cross-sectional view of the friction brake mechanism based speed reduction device shown in FIG. 2;
FIG. 4 is a schematic view of a portion of the friction brake mechanism based speed reduction device shown in FIG. 3;
FIG. 5 is a schematic structural view of a wind turbine braking system according to the present invention;
FIG. 6 is a schematic view of a portion of the wind turbine brake system shown in FIG. 5;
FIG. 7 is a schematic view of the wind sensing assembly shown in FIG. 5 in cooperation with a brake release assembly.
Detailed Description
To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
As shown in fig. 1, the present invention discloses a reduction gear 10 based on a friction brake mechanism, comprising: the friction braking device comprises a support base 100, a friction transmission mechanism 200 and a friction braking mechanism 300, wherein the friction transmission mechanism 200 and the friction braking mechanism 300 are respectively arranged on the support base 100, and the friction braking mechanism 300 is in driving connection with the friction transmission mechanism 200.
As shown in fig. 2, specifically, the friction drive mechanism 200 includes: the supporting seat comprises a transmission gear 210, a follow-up connecting piece 220 and a first connecting rod 230, wherein the transmission gear 210 is rotatably arranged on the supporting seat 100, and the follow-up connecting piece 220 is in driving connection with the transmission gear 210; one end of the first link 230 is hinged to the follower link 220.
As shown in fig. 2, specifically, the friction brake mechanism 300 includes: the movable friction block 310, the fixed clamp plate 320, the movable clamp plate 330, the second link 340, the third link 350 and the elastic link 360, wherein the fixed clamp plate 320 and the movable clamp plate 310 are respectively connected with the support seat 100, and the fixed clamp plate 320 and the movable clamp plate 310 are respectively clamped at two sides of the movable friction block 310. One end of the second connecting rod 340 is hinged with one side of the movable friction block 310, and the other end is hinged with one end of the elastic connecting rod 360; one end of the third link 350 is hinged to the other side of the movable friction block 310, and the other end is hinged to the other end of the elastic link 360. The other end of the first link 230 is connected to the middle of the elastic link 360.
As shown in fig. 2, specifically, the fixed link 370 is respectively disposed at both sides of the movable friction block 310, and the second link 340 and the third link 350 are respectively connected to the movable friction block 310 through the fixed link 370.
As shown in fig. 2, specifically, the fixed splint 320 and the movable splint 310 are both provided with friction guide slots 380, and the fixed links 370 are movably inserted into the friction guide slots 380 one by one.
As shown in fig. 3 and 4, in detail, the speed reducer 10 based on the friction braking mechanism further includes a friction adjusting mechanism 400, the friction adjusting mechanism 400 includes a supporting plate 410 and an adjusting screw 420, the adjusting screw 420 is rotatably connected to the supporting plate 410, and the adjusting screw 420 is drivingly connected to the movable clamp plate 310.
As shown in fig. 2, specifically, the other end of the first link is provided with a collar 231, and the collar 231 is movably sleeved on the middle portion of the elastic link 360.
The operation of the reduction gear unit 10 based on the friction brake mechanism will be described below (see fig. 1 to 4):
when the transmission gear 200 rotates, the follow-up connecting piece 220 is driven to rotate together, and the first connecting rod 230 is driven to do circular motion in the rotating process of the follow-up connecting piece 220; when the first connecting rod 230 makes a circular motion, the movable friction block 310 is indirectly driven by the elastic connecting rod 360, the second connecting rod 340 and the third connecting rod 350 to reciprocate in the vertical direction along the fixed clamping plate 320 and the movable clamping plate 330; in the process that the movable friction block 310 reciprocates in the vertical direction, sliding friction is continuously formed between the movable friction block and the fixed clamping plate 320 and the movable clamping plate 330, so that energy is continuously consumed, and the transmission gear 210 is decelerated;
it should be noted that the first link 230 moves in both the horizontal direction and the vertical direction by circular motion; in the invention, the fixed clamping plate 320 and the movable clamping plate 330 are arranged in parallel, so that the fixed clamping plate 320 and the movable clamping plate 330 can guide and limit the movable friction block 310 in the vertical direction; on the other hand, sliding friction is formed on the movable friction block 310; moreover, in the present invention, the elastic connecting rod 360 is hinged to the second connecting rod 340 and the third connecting rod 350, and the second connecting rod 340 and the third connecting rod 350 are hinged to the fixed connecting rod 370, so that the movable friction block 310 can realize reciprocating motion only in the vertical direction through cooperation; that is, the rotational motion of the transmission gear 210 is converted into the reciprocating linear motion of the movable friction block 310 in the vertical direction;
it should be noted that, when the first link 230 rotates from bottom to top, the elastic link 360 is pulled to move upwards; in this process, the elastic link 360 is elastically deformed, and the second link 340 and the third link 350 are rotated with respect to the elastic link 360 and the fixed link 370, respectively; through the elastic deformation of the elastic link 360, the rotation of the second link 340 and the third link 350 counteracts the horizontal displacement generated when the first link 230 rotates; similarly, the first link 230 presses the elastic link 360 downward when rotating from the top; in this process, the elastic link 360 is elastically deformed, and the second link 340 and the third link 350 are rotated with respect to the elastic link 360 and the fixed link 370, respectively; through the elastic deformation of the elastic link 360, the rotation of the second link 340 and the third link 350 counteracts the horizontal displacement generated when the first link 230 rotates; therefore, the action force of the dynamic friction block 310 in the horizontal direction is ensured to be kept stable, and a stable deceleration effect is further achieved;
it should be further noted that the clamping force of the fixed clamping plate 320 and the movable clamping plate 330 on the movable friction block 310 is large enough, so that during the reciprocating motion of the movable friction block 310 in the vertical direction, no matter whether the movable friction block 310 moves upwards in a direction close to the following connection member 220 or downwards in a direction away from the following connection member 220, the following connection member 220 needs to overcome the sliding friction force between the movable friction block 310 and the fixed clamping plate 320 and the movable clamping plate 330 (the gravity of the movable friction block 310 can be ignored here), so as to ensure that the friction force of the friction brake mechanism-based speed reducer 10 is kept continuous and stable, and thus ensure that the friction brake mechanism-based speed reducer 10 keeps continuous and stable speed reduction of the wind turbine brake system 20;
it should be noted that, different wind power generators have different load capacities, so that different wind power generators have different requirements on the speed reduction capacity of the speed reduction device;
in order that the friction braking mechanism based speed reduction device 10 of the present invention can be applied to different wind power generators, the friction braking mechanism based speed reduction device 10 is further provided with a friction adjusting mechanism 400; when the deceleration capacity of the deceleration device 10 based on the friction braking mechanism needs to be improved, the adjusting screw 420 is rotated to enable the adjusting screw 420 to drive the movable clamping plate 310 to translate towards the direction close to the fixed clamping plate 320, so that the movable friction block 310 is clamped more tightly by the fixed clamping plate 320 and the movable clamping plate 310, the sliding friction force between the movable friction block 310 and the fixed clamping plate 320 and the sliding friction force between the movable friction block 310 and the movable clamping plate 310 are larger, and the deceleration effect of the wind driven generator is more obvious.
As shown in fig. 5, the present invention further discloses a wind power generator braking system 20, which includes a speed reducer 10 based on a friction braking mechanism and a wind power induction driving device 30, wherein the speed reducer 10 based on the friction braking mechanism is in driving connection with the wind power induction driving device 30.
As shown in fig. 5, specifically, the wind induction driving apparatus 30 includes: the wind power braking device comprises a wind power induction assembly 40, a braking unlocking assembly 50 and a wind power braking assembly 60, wherein the wind power induction assembly 40 is connected with the braking unlocking assembly 50, the braking unlocking assembly 50 is in contact with or separated from the wind power braking assembly 60, and the speed reducing device 10 based on a friction braking mechanism is in driving connection with the wind power braking assembly 60.
As shown in fig. 5, in particular, the wind induction assembly 40 includes: a sail (not shown), a free link 401, a guide base 402, a free slider 403 and a transmission return spring 404; the sail is connected with a free slide block 403 through a free connecting rod 401; a free slider 403 is slidably disposed on the guide base 402; one end of the transmission return spring 404 is connected to the free slider 403, and the other end is connected to the guide base 402.
As shown in fig. 5 and 7, specifically, the braking unlocking assembly 50 includes a supporting link 501 and a V-shaped transmission member 502, and the V-shaped transmission member 502 is rotatably sleeved on the supporting link 501; the V-shaped transmission member 502 has a displacement sensing end 503, the free sliding block 403 has a stepped guiding groove 405, and the displacement sensing end 503 is slidably engaged with the stepped guiding groove 405. In a preferred embodiment, the displacement-sensing end 503 is provided with a ball head 504, and the ball head 504 is slidably engaged in the stepped guide groove 405. This allows the displacement sensing end 503 to smoothly engage with the stepped guide groove 405. In addition, the ball head 504 is slidably engaged in the stepped guide groove 405, so that the ball head 504 is limited on one hand, and the ball head 504 is prevented from being disengaged from the stepped guide groove 405; on the other hand, the state of the V-shaped transmission member 502 is indirectly controlled by controlling the displacement sensing end 503, so that the locking or the separation of the V-shaped transmission member 502 and the brake unlocking member 603 is realized, and thus whether the wind driven generator brake system 20 enters a braking state is controlled.
As shown in fig. 5 and 6, specifically, the wind brake assembly 60 includes: the brake device comprises a brake ratchet 601, a brake gear 602, a brake unlocking piece 603 and a brake connecting rod 604, wherein the brake ratchet 601 is in driving connection with the brake connecting rod 604, the brake gear 602 is movably sleeved on the brake connecting rod 604, and the brake gear 602 is meshed with the transmission gear 210; the brake unlocking piece 603 is rotatably arranged on the brake gear 602, the V-shaped transmission piece 502 is also provided with a brake locking end 505, and the brake unlocking piece 603 is locked with the brake locking end 505 or the brake ratchet 601.
As shown in fig. 5, in particular, the wind power brake assembly 60 further includes a limiting elastic sheet 605, and the limiting elastic sheet 605 is disposed on the brake gear 602 and abuts against the brake unlocking piece 603, so that the brake unlocking piece 603 has a tendency to be locked with the brake ratchet 601. It should be noted that the limiting elastic sheet 605 abuts against the braking unlocking piece 603, so that the braking unlocking piece 603 has a tendency of locking with the braking ratchet 601; that is, the limit elastic sheet 605 provides a supporting force for the braking unlocking piece 603, so that the gravity of the braking unlocking piece 603 is overcome, the braking unlocking piece 603 is stably locked with the braking ratchet 601, and unhooking is prevented; thereby ensuring the stability of the wind turbine brake system 20 and providing reliable brake protection for the wind turbine.
Specifically, as shown in fig. 5, the brake release member 603 has a lock engaging end 606 and a linkage lock end 607, the lock engaging end 606 being locked to or separated from the brake lock end 505; the linkage locking end 607 is locked or separated with the brake ratchet 601.
As shown in fig. 5, in particular, the linkage locking end 607 has a hook 608, and the hook 608 is locked with or separated from a ratchet groove 609 of the braking ratchet 601. Through the structural cooperation of the hook 608 and the ratchet groove 609, on one hand, the linkage locking end 607 and the braking ratchet 601 are ensured to be easily locked; on the other hand, the linkage locking end 607 is easy to separate from the braking ratchet 601; thereby ensuring reliability and stability of the wind turbine brake system 20.
As shown in fig. 7, in detail, the guide base 402 is provided with a linear guide groove 406, and the free slider 403 is slidably disposed along the linear guide groove 406.
When the wind turbine braking system 20 of the present invention is applied to a wind turbine, the brake link 604 is connected to a transmission shaft of the wind turbine. It should be particularly noted that the fan blade is connected to the wind driven generator through the brake link 604, that is, the fan blade drives the transmission shaft of the wind driven generator to rotate through the brake link 604, so as to realize the power generation of the wind driven generator.
The invention discloses a wind driven generator braking system 20 applied to the technical field of wind driven generators; when the wind power around the wind driven generator exceeds the preset overload limit value, the wind driven generator is braked, so that the wind driven generator is prevented from being overloaded to run and shorten the service life or burn out.
The operation of the wind turbine braking system 20 is explained below (please refer to fig. 5, 6 and 7):
firstly, setting an overload limit value aiming at the load capacity of the wind driven generator, and when the wind power does not exceed the overload limit value, enabling a braking system 20 of the wind driven generator to be in a non-braking state and enabling the wind driven generator to normally run to generate electricity; when the wind power exceeds the overload limit value, the wind driven generator braking system 20 enters a braking state, and the braking system 20 decelerates a transmission shaft of the wind driven generator; the generator is prevented from being burnt out due to the over-high rotating speed of the transmission shaft;
when the wind power does not exceed the preset overload limit value, the wind driven generator braking system 20 is in a non-braking state; at this time, the locking catch end 505 of the V-shaped transmission member 502 catches the catch mating end 606 of the locking release member 603, so that the linkage locking catch end 607 of the locking release member 603 is separated from the ratchet groove 609 of the locking ratchet 601; this allows no linkage between the brake ratchet 601 and the brake gear 602, i.e. the brake gear 602 remains stationary while the brake ratchet 601 follows the brake link 604;
with the increase of wind power, when the sail moves towards the direction close to the transmission return spring 404, the sail drives the free slide block 403 to move towards the direction close to the transmission return spring 404 through the free connecting rod 401, the transmission return spring 404 is continuously compressed, and the stepped guide groove 405 also continuously moves, so that the position of the ball head 504 in the stepped guide groove 405 is also continuously changed; of course, in this process, the latch locking end 505 of the V-shaped transmission member 502 still hooks the latch locking end 606 of the latch unlocking member 603, so that the linkage latch locking end 607 of the latch unlocking member 603 is kept separated from the ratchet groove 609 of the latch ratchet 601;
when the wind power increases to exceed the overload limit value, the wind driven generator brake system 20 enters a brake state from a non-brake state; the specific process is as follows: with the increase of wind power, the sail further drives the free slide block 403 to move towards the direction close to the transmission return spring 404 through the free connecting rod 401 under the action of the wind power; in the process, the transmission return spring 404 is further compressed, and one end of the stepped guide groove 405 far away from the transmission return spring 404 further moves towards the direction close to the ball head 504, and finally the ball head 504 is abutted against one end of the stepped guide groove 405 far away from the transmission return spring 404; it should be noted that, in the process, the V-shaped transmission member 502 rotates along the support link 501 by an angle, and the locking end 505 of the V-shaped transmission member 502 is separated from the locking end 606 of the locking and unlocking member 603;
after the brake latch end 505 is separated from the latch mating end 606, the brake unlocking piece 603 is linked with the latch end 607 to approach the brake ratchet 601 under the elastic action of the limiting elastic sheet 605 and finally to be latched with the ratchet groove 609 of the brake ratchet 601; after the braking unlocking piece 603 is locked with the braking ratchet 601, linkage is formed between the braking gear 602 and the braking ratchet 601; this causes the brake ratchet 601 to rotate with the brake link 604, which drives the brake gear 602 to rotate; when the brake gear 602 rotates, the transmission gear 210 is driven to rotate, so that the speed reducer 10 based on the friction brake mechanism is driven to operate, and the speed of the transmission shaft is reduced; the phenomenon that the wind power generator runs in an overload mode due to the fact that the rotating speed of a transmission shaft is too high due to too large wind power is avoided;
the wind driven generator braking system 20 of the invention decelerates the transmission shaft of the wind driven generator when the wind power is too large; the phenomenon that the wind power generator runs in an overload mode due to the fact that the rotating speed of a transmission shaft is too high due to too large wind power is avoided; moreover, the wind driven generator braking system 20 can sense the magnitude of wind power in real time, and instantly enters a braking state to perform deceleration processing when the wind power exceeds a preset overload limit value, so that the braking is rapid and timely while automatic braking is realized;
when the wind power is reduced to be lower than the preset overload limit value, the wind driven generator braking system 20 is recovered to a non-braking state and does not brake the wind driven generator any more; the specific process is as follows: when the wind power is reduced, the wind power borne by the sail is reduced; at this time, the free slide 403 is reset in a direction away from the transmission return spring 404 under the elastic force of the transmission return spring 404; at this time, one end of the stepped guide slot 405 close to the transmission return spring 404 reaches the ball head 504 of the displacement sensing end 503 and is matched with the ball head 504; at this time, the V-shaped transmission member 502 is rotated and reset, and the braking locking end 505 of the V-shaped transmission member 502 hooks the locking end 606 of the braking unlocking member 603 again, so that the linkage locking end 607 of the braking unlocking member 603 is separated from the ratchet groove 609 of the braking ratchet 601;
according to the wind driven generator braking system 20, when the wind power is reduced from exceeding a preset overload limit value to being lower than the preset overload limit value, the braking state can be instantly switched to a non-braking state, so that the wind driven generator can generate power stably and continuously in real time;
moreover, the wind driven generator braking system 20 can repeatedly switch between a braking state and a non-braking state according to the size of wind power when the wind speed is repeatedly shifted near a preset overload limit value; therefore, the wind driven generator is reliably protected in real time.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (6)
1. A friction brake mechanism based speed reduction device comprising: the friction braking mechanism is connected with the friction transmission mechanism in a driving way;
characterized in that the friction drive mechanism comprises: the transmission gear is rotatably arranged on the supporting seat, and the follow-up connecting piece is in driving connection with the transmission gear; one end of the first connecting rod is hinged with the follow-up connecting piece;
the friction braking mechanism includes: the movable friction block comprises a movable friction block, a fixed clamping plate, a movable clamping plate, a second connecting rod, a third connecting rod and an elastic connecting rod, wherein the fixed clamping plate and the movable clamping plate are respectively connected with the supporting seat, and the fixed clamping plate and the movable clamping plate are respectively clamped on two sides of the movable friction block; one end of the second connecting rod is hinged with one side of the movable friction block, and the other end of the second connecting rod is hinged with one end of the elastic connecting rod; one end of the third connecting rod is hinged with the other side of the movable friction block, and the other end of the third connecting rod is hinged with the other end of the elastic connecting rod;
the other end of the first connecting rod is connected with the middle part of the elastic connecting rod.
2. The reduction gear based on friction brake mechanism of claim 1, characterized in that, the two sides of the movable friction block are respectively provided with a fixed connecting rod, and the second connecting rod and the third connecting rod are respectively connected with the movable friction block through the fixed connecting rods.
3. The friction brake mechanism-based speed reduction device according to claim 2, wherein the fixed clamp plate and the movable clamp plate are both provided with friction guide grooves, and the fixed connecting rods are movably inserted in the friction guide grooves in a one-to-one correspondence manner.
4. The friction brake mechanism-based reduction gear according to claim 2, further comprising a friction adjustment mechanism, wherein the friction adjustment mechanism comprises a support plate and an adjustment screw, the adjustment screw is rotatably connected with the support plate, and the adjustment screw is in driving connection with the movable clamping plate.
5. The friction brake mechanism-based speed reduction device according to claim 1, wherein a lantern ring is arranged at the other end of the first connecting rod, and the lantern ring is movably sleeved in the middle of the elastic connecting rod.
6. A wind generator braking system comprising a friction brake mechanism based speed reduction device according to any one of claims 1 to 5;
the wind driven generator braking system further comprises a wind power induction driving device, and the speed reducing device based on the friction braking mechanism is in driving connection with the wind power induction driving device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011596811.4A CN112727679B (en) | 2020-12-29 | 2020-12-29 | Speed reduction device based on friction braking mechanism and wind driven generator braking system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011596811.4A CN112727679B (en) | 2020-12-29 | 2020-12-29 | Speed reduction device based on friction braking mechanism and wind driven generator braking system |
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| Publication Number | Publication Date |
|---|---|
| CN112727679A CN112727679A (en) | 2021-04-30 |
| CN112727679B true CN112727679B (en) | 2022-05-31 |
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| CN202011596811.4A Active CN112727679B (en) | 2020-12-29 | 2020-12-29 | Speed reduction device based on friction braking mechanism and wind driven generator braking system |
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Effective date of registration: 20220510 Address after: 076376 Shi Yao Zi Xiang Shi Yao Zi Cun, Chongli County, Zhangjiakou City, Hebei Province Applicant after: Chongli Xintian wind energy Co.,Ltd. Applicant after: Hebei Jiantou new energy Co., Ltd Address before: 311800 No. 15 Wen Tao Street, Tao Zhu street, Zhuji, Shaoxing, Zhejiang. Applicant before: ZHUJI H&C HIEST MOTOR Co.,Ltd. |
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