CN112983744B - Wind driven generator based on linear type grading wind power braking device - Google Patents
Wind driven generator based on linear type grading wind power braking device Download PDFInfo
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- CN112983744B CN112983744B CN202110254849.1A CN202110254849A CN112983744B CN 112983744 B CN112983744 B CN 112983744B CN 202110254849 A CN202110254849 A CN 202110254849A CN 112983744 B CN112983744 B CN 112983744B
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- 230000005540 biological transmission Effects 0.000 claims abstract description 66
- 230000007246 mechanism Effects 0.000 claims abstract description 55
- 238000010248 power generation Methods 0.000 claims abstract description 31
- 230000000670 limiting effect Effects 0.000 claims description 18
- 238000006073 displacement reaction Methods 0.000 claims description 14
- 230000006698 induction Effects 0.000 claims description 8
- 230000001681 protective effect Effects 0.000 claims description 5
- 230000002035 prolonged effect Effects 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 12
- 230000013011 mating Effects 0.000 description 7
- 230000000694 effects Effects 0.000 description 3
- 230000005484 gravity Effects 0.000 description 3
- 230000007423 decrease Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000003044 adaptive effect Effects 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000000446 fuel Substances 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
- F03D9/00—Adaptations of wind motors for special use; Combinations of wind motors with apparatus driven thereby; Wind motors specially adapted for installation in particular locations
- F03D9/20—Wind motors characterised by the driven apparatus
- F03D9/25—Wind motors characterised by the driven apparatus the apparatus being an electrical generator
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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
- F03D13/00—Assembly, mounting or commissioning of wind motors; Arrangements specially adapted for transporting wind motor components
- F03D13/20—Arrangements for mounting or supporting wind motors; Masts or towers for wind motors
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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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- 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
-
- 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
- Y02E10/728—Onshore wind turbines
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- Sustainable Energy (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Wind Motors (AREA)
Abstract
The invention relates to a wind driven generator based on a linear type grading wind power braking device, which comprises: the wind power generation device comprises a support frame, a power generation device, a wind power transmission device, a fan blade and a grading wind power braking device; the power generation device is arranged on the support frame and is in driving connection with the wind power transmission device; the wind power transmission device is in driving connection with the fan blades, and the grading wind power braking device is connected with the wind power transmission device; the hierarchical wind power braking device includes: the wind power generation device comprises a sail, a primary wind power braking mechanism and a secondary wind power braking mechanism, wherein the primary wind power braking mechanism is in driving connection with the sail, and the secondary wind power braking mechanism is in driving connection with the primary wind power braking mechanism; the primary wind power braking mechanism and the secondary wind power braking mechanism are also connected with the wind power transmission device. According to the wind driven generator based on the linear grading wind power braking device, grading protection of the wind driven generator is achieved through the grading wind power braking device, overload operation of the wind driven generator is avoided, and therefore 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 wind driven generator based on a linear grading wind power braking device.
Background
Wind power generation is a process of converting wind energy into mechanical energy and then converting the mechanical energy into electrical energy. The process does not require fuel or radiation, and does not pollute the air and the environment, so wind energy is a clean energy source.
However, the wind power input to the wind power generation apparatus is not set by human, but the magnitude of the natural wind taken from the working environment in which the wind power generation apparatus is located, that is, the magnitude of the wind power driving the wind power generation apparatus is not controllable. Currently, wind power generators on the market are prone to overload operation caused by overlarge wind power, and finally overload wind power generation equipment to burn out.
Naturally, there are also wind power generation devices which, in case of excessive wind power, start a protection function to protect the wind power generation device from burning out due to overload operation. For example, in the patent of CN104500337a, when the wind force is too high, a worker is required to manually operate a handle to activate the protection device to realize the protection function. On one hand, the wind power is required to be monitored in real time through a manual operation protection mechanism, and the labor cost is high; on the other hand, from the time when the worker knows that the wind force is too great, it takes a certain time until the worker manually completes the protecting operation of the protecting device, during which time the wind power plant is in an overload state. Consequently, the wind power plant inevitably has an overload state, and thus the protection effect on the wind power plant is not ideal. Moreover, the overload protection in the prior art cannot be correspondingly adjusted according to the wind power, and the adaptive overload protection can not be realized while the normal power generation of the wind driven generator is ensured.
Disclosure of Invention
The invention aims to overcome the defects in the prior art, and provides a wind driven generator based on a linear type grading wind power braking device, which realizes grading protection on the wind driven generator through the grading wind power braking device, ensures normal operation and power generation of the wind driven generator, and simultaneously avoids overload operation of the wind driven generator, thereby prolonging the service life of the wind driven generator.
The aim of the invention is realized by the following technical scheme:
a wind-driven generator based on a linear graded wind-brake device, comprising: the wind power generation device comprises a support frame, a power generation device, a wind power transmission device, a fan blade and a grading wind power braking device; the power generation device is arranged on the support frame and is in driving connection with the wind power transmission device; the wind power transmission device is in driving connection with the fan blades, and the grading wind power braking device is connected with the wind power transmission device;
the hierarchical wind power braking device comprises: the wind power generation device comprises a sail, a primary wind power braking mechanism and a secondary wind power braking mechanism, wherein the primary wind power braking mechanism is in driving connection with the sail, and the secondary wind power braking mechanism is in driving connection with the primary wind power braking mechanism; the primary wind power braking mechanism and the secondary wind power braking mechanism are also connected with the wind power transmission device.
In one embodiment, the graded wind brake device further comprises a guide base connected to the support frame;
the primary wind braking mechanism comprises: the first wind power sensing assembly, the first brake unlocking assembly and the first wind power brake assembly; the first wind power induction assembly comprises a first free sliding block and a first reset spring, the first free sliding block is connected with the sail, and the first free sliding block is arranged on the guide base in a sliding manner; one end of the first reset spring is connected with the first free sliding block, and the other end of the first reset spring is connected with one end of the guide base;
the first brake unlocking assembly comprises a first support connecting rod and a first V-shaped transmission piece, the first support connecting rod is arranged on the support frame, and the first V-shaped transmission piece is rotatably sleeved on the first support connecting rod; the first V-shaped transmission piece is provided with a first displacement induction end and a first braking locking end, a first stepped guide groove is formed in the first free sliding block, the first displacement induction end is slidably clamped in the first stepped guide groove, and the first braking locking end is locked or separated from the first wind power braking component;
the first wind brake assembly includes: the wind power transmission device comprises a transmission connecting rod, a first brake ratchet wheel, a first brake disc and a first brake unlocking piece; the first braking ratchet wheel is in driving connection with the transmission connecting rod; the first brake disc is movably sleeved on the transmission connecting rod; the first brake disc is arranged on the support frame, and is clamped on the outer wall of the first brake disc; the first brake unlocking piece is rotatably arranged on the first brake disc, and the first brake unlocking piece is locked or separated from the first brake locking end.
In one embodiment, the first wind power brake assembly further includes a first limiting elastic piece, and the first limiting elastic piece is disposed on the first brake disc and abuts against the first brake unlocking piece, so that the first brake unlocking piece has a tendency to lock with the first brake ratchet.
In one embodiment, the wind driven generator based on the linear grading wind power braking device is characterized by further comprising a protection shell, wherein the protection shell is arranged on the support frame and is provided with a containing cavity, and the wind power transmission device and the power generation device are contained in the containing cavity; the graded wind power braking device part is accommodated in the accommodating cavity.
In one embodiment, the sail is disposed outside the receiving cavity; the grading wind power braking device further comprises a free connecting rod; one end of the free connecting rod is connected with the sail, and the other end of the free connecting rod stretches into the accommodating cavity and is connected with the first free sliding block.
In one embodiment, the first support link is connected to an inner wall of the receiving cavity.
In one embodiment, the first brake unlocking piece is provided with a first lock catch matching end and a first linkage lock catch end, and the first lock catch matching end is locked or separated from the first brake lock catch end; the first linkage locking end is locked or separated from the first braking ratchet wheel.
In one embodiment, the first linkage locking end has a first hook, and the first hook is locked or separated from a first ratchet groove of the first brake ratchet.
In one embodiment, the primary wind brake mechanism is structurally identical to the secondary wind brake mechanism.
In one embodiment, the secondary wind-powered braking mechanism includes: the second wind power sensing assembly, the second brake unlocking assembly and the second wind power brake assembly; the second wind power induction assembly comprises a second free sliding block and a second reset spring, the second free sliding block is propped against or separated from the first free sliding block, and the second free sliding block is arranged on the guide base in a sliding manner; one end of the second reset spring is connected with the second free sliding block, and the other end of the second reset spring is connected with the other end of the guide base.
According to the wind driven generator based on the linear grading wind power braking device, grading protection of the wind driven generator is achieved through the grading wind power braking device, overload operation of the wind driven generator is avoided, and therefore 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 that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a wind turbine based on a linear graded wind brake system according to the present invention;
FIG. 2 is a schematic view of a portion of the wind turbine shown in FIG. 1;
FIG. 3 is a schematic view of the staged wind brake device of FIG. 2 with the sail removed;
FIG. 4 is a schematic view of a portion of the hierarchical wind brake apparatus shown in FIG. 3;
FIG. 5 is a partially exploded view of the staged wind brake device illustrated in FIG. 3;
FIG. 6 is a schematic diagram illustrating the cooperation of the second wind-sensing assembly, the second brake release assembly and the guiding base shown in FIG. 3;
FIG. 7 is an exploded view of the second wind sensing assembly and the second brake release assembly of FIG. 3;
FIG. 8 is a schematic illustration of the primary wind brake mechanism of FIG. 3 in a dormant state;
FIG. 9 is a schematic illustration of the primary wind brake mechanism of FIG. 3 in a braked state;
FIG. 10 is a schematic view of the graduated wind brake apparatus of FIG. 3 in a dormant state;
FIG. 11 is a schematic illustration of the primary and secondary wind brake mechanisms of FIG. 3 in a braked state.
Detailed Description
In order that the invention may be readily understood, a more complete description of the invention will be rendered by reference to the appended drawings. The drawings illustrate preferred embodiments of the invention. 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 "fixed 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 are used herein for illustrative purposes only and are not meant to be the only embodiment.
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. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.
As shown in fig. 1, the present invention discloses a wind power generator 10 based on a linear type graded wind power brake device, comprising: the wind power generation device comprises a support frame 20, a power generation device 30, a wind power transmission device 40, a fan blade 50 and a grading wind power braking device 60; the power generation device 30 is arranged on the support frame 20, and the power generation device 30 is in driving connection with the wind power transmission device 40; the wind power transmission device 40 is in driving connection with the fan blade 50, and the grading wind power braking device 60 is connected with the wind power transmission device 40.
As shown in fig. 1 and 2, the hierarchical wind power brake device 60 includes: the wind power generation device comprises a sail 100, a primary wind power braking mechanism 200 and a secondary wind power braking mechanism 300, wherein the primary wind power braking mechanism 200 is in driving connection with the sail 100, and the secondary wind power braking mechanism 300 is in driving connection with the primary wind power braking mechanism 200; the primary 200 and secondary 300 wind power braking mechanisms are also coupled to the wind power transmission 40.
As shown in fig. 3 and 4, in particular, the stepped wind brake apparatus 60 further includes a guide base 400 connected to the support frame 20. Wherein, the first-stage wind power braking mechanism 200 comprises: first wind-force sensing assembly 210, first brake unlocking assembly 220, and first wind-force braking assembly 230.
As shown in fig. 4, specifically, the first wind power sensing assembly 210 includes a first free slider 211 and a first return spring 212, wherein the first free slider 211 is connected to the sail 100, and the first free slider 211 is slidably disposed on the guide base 400; one end of the first return spring 212 is connected to the first free slider 211, and the other end is connected to one end of the guide base 400.
As shown in fig. 4 and 5, specifically, the first brake unlocking assembly 220 includes a first support link 221 and a first V-shaped transmission member 222, the first support link 221 is disposed on the support frame 20 (as shown in fig. 1), and the first V-shaped transmission member 222 is rotatably sleeved on the first support link 221. The first V-shaped transmission member 222 has a first displacement sensing end 223 and a first braking locking end 224, the first free sliding block 211 is provided with a first stepped guiding slot 213, the first displacement sensing end 223 is slidably clamped in the first stepped guiding slot 213, and the first braking locking end 224 is locked to or separated from the first wind power braking component 230. As a preferred embodiment, the first displacement sensing end 223 is provided with a first ball 225, and the first ball 225 is slidably engaged in the first stepped guide slot 213. This allows the first displacement sensing end 223 to smoothly engage with the first stepped guide groove 213. In addition, the first ball 225 is slidably clamped in the first stepped guide groove 213, so that a limiting effect is achieved on the first ball 225 on one hand, and the first ball 225 is prevented from being separated from the first stepped guide groove 213; on the other hand, the state of the first V-shaped transmission member 222 is indirectly controlled by controlling the first displacement sensing end 223, so that the first V-shaped transmission member 222 is locked or separated from the first brake unlocking member 234, and whether the hierarchical wind brake device 60 enters a braking state is controlled.
As shown in fig. 4, specifically, the first wind brake assembly 230 includes: the wind power transmission device 40 includes a transmission link 401, a first brake ratchet 231, a first brake disc 232, a first brake disc 233, and a first brake release 234. The first brake ratchet 231 is connected with the transmission link 401; the first brake disc 232 is movably sleeved on the transmission connecting rod 401; the first brake disc 233 is arranged on the support frame 20, and the first brake disc 233 is clamped on the outer wall of the first brake disc 232; the first brake release member 234 is rotatably disposed on the first brake disc 232, and the first brake release member 234 is locked to or separated from the first brake locking end 224.
As shown in fig. 3 and 4, in particular, the first wind brake assembly 230 further includes a first limiting spring 235, where the first limiting spring 235 is disposed on the first brake disc 232 and abuts against the first brake release member 234, so that the first brake release member 234 has a tendency to lock with the first brake ratchet 231. It should be noted that, the first limiting spring 235 abuts against the first brake unlocking member 234, so that the first brake unlocking member 234 has a tendency to lock with the first brake ratchet 231; namely, the first limiting elastic piece 235 overcomes the gravity of the first brake unlocking piece 234 by the supporting force provided by the first brake unlocking piece 234, ensures that the first brake unlocking piece 234 is stably locked with the first brake ratchet 231, and prevents unhooking; thereby ensuring the stability of the staged wind braking device 60 and providing reliable braking protection for the wind turbine 10, thereby improving the system stability of the wind turbine 10.
As shown in fig. 1, in particular, the wind driven generator 10 based on the linear graded wind brake device further comprises a protective housing 70, wherein the protective housing 70 is arranged on the support frame 20, the protective housing 70 is provided with a containing cavity 80, and the wind driven device 40 and the power generation device 30 are contained in the containing cavity 80; the stepped wind brake 60 is partially accommodated in the accommodating chamber 80.
As shown in fig. 1 and 4, in particular, the sail 100 is disposed outside the housing cavity 80; the graduated wind brake apparatus 60 further includes a free link 500; one end of the free link 500 is connected with the sail 100, and the other end extends into the accommodating cavity 80 and is connected with the first free slider 211. Specifically, the first support link 221 is connected to the inner wall of the receiving chamber 80.
As shown in fig. 8, specifically, the first brake release member 234 has a first latch mating end 236 and a first linkage latch end 237, the first latch mating end 236 being latched to or separated from the first brake latch end 224; the first interlocking latch end 237 is latched to or separated from the first brake ratchet 231.
As shown in fig. 8, specifically, the first linkage locking end 237 has a first hook 238, and the first hook 238 is locked to or separated from a first ratchet groove 239 of the first brake ratchet 231. By the structural cooperation of the first hook 238 and the first ratchet groove 239, on one hand, the first linkage locking end 237 and the first brake ratchet 231 are ensured to be easily locked; on the other hand, the first linkage lock end 237 is easily separated from the first brake ratchet 231; thereby ensuring reliability and stability of the staged wind brake device 60.
As shown in fig. 2 and 3, specifically, the primary wind brake mechanism 200 has the same structure as the secondary wind brake mechanism 300. The secondary wind power braking mechanism 300 includes: second wind sensing assembly 310, second brake unlocking assembly 320, and second wind braking assembly 330.
As shown in fig. 4, specifically, the second wind power sensing assembly 310 includes a second free slider 311 and a second return spring 312, wherein the second free slider 311 is abutted against or separated from the first free slider 211, and the second free slider 311 is slidably disposed on the guide base 400; one end of the second return spring 312 is connected to the second free slider 311, and the other end is connected to the other end of the guide base 400.
As shown in fig. 4 and 5, specifically, the second brake unlocking assembly 320 includes a second support link 321 and a second V-shaped transmission member 322, the second support link 321 is disposed on the support frame 20, and the second V-shaped transmission member 322 is rotatably sleeved on the second support link 321. The second V-shaped transmission member 322 has a second displacement sensing end 323 and a second braking locking end 324, the second free slider 311 is provided with a second stepped guiding slot 313, the second displacement sensing end 323 is slidably engaged with the second stepped guiding slot 313, and the second braking locking end 324 is locked to or separated from the second wind power braking component 330. As a preferred embodiment, the second displacement sensing end 323 is provided with a second ball 325, and the second ball 325 is slidably engaged in the second stepped guide groove 313. This allows the second displacement sensing end 323 to smoothly engage with the second stepped guide groove 313. In addition, the second ball 325 is slidably clamped in the second stepped guide groove 313, so that a limiting effect is achieved on the second ball 325 on one hand, and the second ball 325 is prevented from being separated from the second stepped guide groove 313; on the other hand, the second displacement sensing end 323 is controlled to indirectly control the state of the second V-shaped transmission member 322, so that the second V-shaped transmission member 322 is locked or separated from the second brake unlocking member 334, and whether the graded wind power brake device 60 enters a braking state or not is controlled.
As shown in fig. 3 and 4, specifically, the second wind brake assembly 330 includes: a second brake ratchet 331, a second brake disc 332, a second brake disc 333, and a second brake release 334; the second brake ratchet wheel 331 is in driving connection with the transmission connecting rod 401, and the second brake disc 332 is movably sleeved on the transmission connecting rod 401; the second brake disc 333 is disposed on the support frame 20 (as shown in fig. 1), and the second brake disc 333 is clamped to the outer wall of the second brake disc 332; the second brake release member 334 is rotatably disposed on the second brake disc 332, and the second brake release member 334 is locked to or separated from the second brake locking end 324.
As shown in fig. 3 and 4, in particular, the second wind brake assembly 330 further includes a second limiting elastic piece 335, where the second limiting elastic piece 335 is disposed on the second brake disc 332 and abuts against the second brake release member 334, so that the second brake release member 334 has a tendency to lock with the second brake ratchet 331. It should be noted that, the second limiting elastic piece 335 abuts against the second brake unlocking piece 334, so that the second brake unlocking piece 334 has a tendency to lock with the second brake ratchet 331; namely, the second limiting elastic sheet 335 overcomes the gravity of the second brake unlocking piece 334 by providing the supporting force for the second brake unlocking piece 334, ensures that the second brake unlocking piece 334 is stably locked with the second brake ratchet 331, and prevents unhooking; thereby ensuring the stability of the staged wind braking device 60 and providing reliable braking protection for the wind turbine 10 (as shown in fig. 1), thereby improving the system stability of the wind turbine 10. Specifically, the second support link 321 is connected to the inner wall of the accommodating chamber 80.
As shown in fig. 4, in particular, the second brake release member 334 has a second latch mating end 336 and a second linkage latch end 337, and the second latch mating end 336 is latched to or separated from the second brake latch end 324. The second interlocking locking end 337 is locked to or separated from the second braking ratchet 331.
As shown in fig. 3, specifically, the second interlocking locking end 337 has a second hook 338, and the second hook 338 is locked to or separated from a second ratchet groove (not shown) of the second brake ratchet 331. The second hook 338 is matched with the structure of the second ratchet groove, so that on one hand, the second linkage locking end 337 and the second brake ratchet 331 are ensured to be easily locked; on the other hand, it is also easy to ensure that the second interlocking lock end 337 is separated from the second brake ratchet 331; thereby ensuring reliability and stability of the staged wind brake device 60.
As shown in fig. 3 and 4, specifically, the guide base 400 is provided with a linear guide groove 402, and the first free slider 211 is slidably disposed along the linear guide groove 402. The second free slider 311 is slidably disposed along the linear guide groove 402.
The following describes the operation principle of the wind power generator 10 of the linear type graded wind power brake device (refer to fig. 1 to 11 together):
a first-stage overload limit value and a second-stage overload limit value are set for the wind power in advance; wherein the secondary overload limit is greater than the primary overload limit;
when the wind power is smaller than the first-level overload limit value, the grading wind power braking device 60 is in a dormant state, and the wind power generator 10 is in a normal working state; at this time, the fan blade 50 senses the wind power of the natural wind and rotates under the action of the wind power, so as to drive the transmission link 401 of the wind power transmission device 40 to rotate together, and the power input value generating device 30 generates power through the transmission link 401;
in this process, the first brake ratchet 231 and the second brake ratchet 331 rotate along with the transmission link 401; it should be further noted that, when the hierarchical wind brake device 60 is in the dormant state, the first brake latch end 224 of the first V-shaped transmission member 222 hooks the first latch mating end 236 of the first brake release member 234, so that the first linkage latch end 237 of the first brake release member 234 is separated from the first ratchet groove 239 of the first brake ratchet 231; thus, there is no linkage between the first brake ratchet 231 and the first brake disc 232, i.e. the first brake disc 232 remains stationary when the first brake ratchet 231 follows the rotation of the transmission link 401;
in this state, the first free slider 211 is reset like one end of the guide base 400 by the elastic force of the first return spring 212; the second free slider 311 is reset like the other end of the guide base 400 by the elastic force of the second reset spring 312; thereby maintaining the first and second free sliders 211 and 311 in a separated state; therefore, similarly, there is no linkage between the second brake ratchet 331 and the second brake disc 332 at this time, that is, when the second brake ratchet 331 rotates following the transmission link 401, the second brake disc 332 remains stationary;
it should be noted that, as the wind force increases, the wind sail 100 drives the first free slider 211 to move towards the second free slider 311 through the free link 500 under the wind force; in this process, the first return spring 212 is continuously stretched, and the first stepped guide groove 213 is also continuously moved, so that the position of the first ball at the first stepped guide groove 213 is also continuously changed; of course, during this process, the first brake latch end 224 of the first V-shaped transmission member 222 still remains hooked over the first latch mating end 236 of the first brake release member 234, such that the first linkage latch end 237 of the first brake release member 234 remains separated from the first ratchet groove 239 of the first brake ratchet 231;
when the wind power is increased to exceed the primary overload limit value and be smaller than the secondary overload limit value; the wind power braking device enters a braking state from a dormant state; and only the primary wind power braking mechanism 200 enters a braking state at this time, and the secondary wind power braking mechanism 300 does not enter the braking state;
the specific process is as follows: with the increase of wind force, the wind sail 100 further drives the first free sliding block 211 to move towards the direction approaching to the second free sliding block 311 through the free connecting rod 500 under the action of wind force; in this process, the first return spring 212 is further compressed, and the end of the first stepped guide groove 213 away from the second free slider 311 is further moved toward the direction approaching the first ball, and finally the first ball is abutted against the end of the first stepped guide groove 213 away from the second free slider 311; it should be specifically noted that, in this process, the first V-shaped transmission member 222 rotates along the first supporting link 221 by an angle, and the first brake locking end 224 of the first V-shaped transmission member 222 is separated from the first lock engagement end 236 of the first brake release member 234;
after the first brake latch end 224 is separated from the first latch mating end 236, the first brake unlocking member 234 approaches the first brake ratchet 231 and is finally latched with the first ratchet groove 239 of the first brake ratchet 231 under the action of its own gravity and the acting force of the first limiting elastic piece 235; after the first brake unlocking piece 234 is locked with the first brake ratchet 231, linkage is formed between the first brake disc 232 and the first brake ratchet 231; this causes the first brake ratchet 231 to rotate with the first brake disc 232 as it follows the rotation of the drive link 401; when the first brake disc 232 rotates, sliding friction is generated between the first brake disc 232 and the first brake disc 233, and the sliding friction force acts on the first brake disc 232 to enable the first brake disc 232 to decelerate, so that the transmission connecting rod 401 is indirectly decelerated through the first brake ratchet 231; thereby preventing the overload operation of the wind driven generator 10 caused by the excessive high rotation speed of the transmission connecting rod 401 due to the excessive wind power;
in the braking state of the first-stage wind-force braking mechanism 200, the first free slider 211 moves closer to the second free slider 311 and finally pushes the second free slider 311 to move in a direction approaching the second return spring 312 as the wind force increases further; when the wind increases beyond the secondary overload limit, the secondary wind-force braking mechanism 300 also enters a braking state; at this time, the primary wind power braking mechanism 200 and the secondary wind power braking mechanism 300 brake the transmission link 401 at the same time, so that the transmission link 401 is decelerated;
it should be noted that, the principle of the process of the second-stage wind power braking mechanism 300 entering the braking state is the same as that of the first-stage wind power braking mechanism 200 entering the braking state, and no detailed description is given here;
the wind driven generator 10 based on the linear type grading wind power braking device realizes two-stage braking according to the magnitude of wind power; that is, when the wind power is greater than the primary overload limit value and less than the secondary overload limit value, braking deceleration is performed only by the primary wind power braking mechanism 200; when the wind speed is greater than the second-level overload limit value, simultaneously starting the first-level wind power braking mechanism 200 and the second-level wind power braking mechanism to perform two-level braking deceleration; the wind driven generator 10 is protected more stably by graded braking, so that the overload operation of the wind driven generator 10 caused by too high rotating speed of the transmission connecting rod 401 due to too high wind power is avoided; in addition, through the hierarchical braking, on one hand, overload protection effect is ensured, on the other hand, the power generation work of the wind driven generator 10 is ensured to be more stable, and normal power generation of the wind driven generator 10 is not influenced due to overlarge braking friction force, or the ideal braking protection effect cannot be achieved due to overlarge braking friction force;
moreover, the wind driven generator 10 can sense the wind power in real time, and instantly enter a braking state and perform deceleration processing when the wind power exceeds a corresponding overload limit value, so that automatic braking is realized, and meanwhile, braking is rapid and timely;
it should be noted that, when the wind power decreases from large to small, the wind power generator 10 releases the brake step by step and returns to the sleep state when the wind power decreases below the first-level overload limit value; it should be noted that, the process of releasing the brake is the reverse process of entering the brake state, and the process of releasing the brake is not repeated again;
it should be noted that, in the wind power generator 10 of the present invention, when the wind speed is repeatedly toggled, the wind power braking mechanism freely and quickly switches between different states along with the wind power in real time; thereby protecting the wind power generator 10 reliably in real time, and simultaneously ensuring that the wind power generator 10 generates power stably and continuously in real time.
The above examples illustrate only a few embodiments of the invention, which are described in detail and are not to be construed as limiting the scope of the invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention. Accordingly, the scope of protection of the present invention is to be determined by the appended claims.
Claims (7)
1. A wind-driven generator based on linear type hierarchical wind-force arresting gear, characterized by comprising: the wind power generation device comprises a support frame, a power generation device, a wind power transmission device, a fan blade and a grading wind power braking device; the power generation device is arranged on the support frame and is in driving connection with the wind power transmission device; the wind power transmission device is in driving connection with the fan blades, and the grading wind power braking device is connected with the wind power transmission device;
the hierarchical wind power braking device comprises: the wind power generation device comprises a sail, a primary wind power braking mechanism and a secondary wind power braking mechanism, wherein the primary wind power braking mechanism is in driving connection with the sail, and the secondary wind power braking mechanism is in driving connection with the primary wind power braking mechanism; the primary wind power braking mechanism and the secondary wind power braking mechanism are also connected with the wind power transmission device;
the grading wind power braking device further comprises a guide base connected with the supporting frame;
the primary wind braking mechanism comprises: the first wind power sensing assembly, the first brake unlocking assembly and the first wind power brake assembly; the first wind power induction assembly comprises a first free sliding block and a first reset spring, the first free sliding block is connected with the sail, and the first free sliding block is arranged on the guide base in a sliding manner; one end of the first reset spring is connected with the first free sliding block, and the other end of the first reset spring is connected with one end of the guide base;
the first brake unlocking assembly comprises a first support connecting rod and a first V-shaped transmission piece, the first support connecting rod is arranged on the support frame, and the first V-shaped transmission piece is rotatably sleeved on the first support connecting rod; the first V-shaped transmission piece is provided with a first displacement induction end and a first braking locking end, a first stepped guide groove is formed in the first free sliding block, the first displacement induction end is slidably clamped in the first stepped guide groove, and the first braking locking end is locked or separated from the first wind power braking component;
the first wind brake assembly includes: the wind power transmission device comprises a transmission connecting rod, a first brake ratchet wheel, a first brake disc and a first brake unlocking piece; the first braking ratchet wheel is in driving connection with the transmission connecting rod; the first brake disc is movably sleeved on the transmission connecting rod; the first brake disc is arranged on the support frame, and is clamped on the outer wall of the first brake disc; the first brake unlocking piece is rotatably arranged on the first brake disc, and the first brake unlocking piece is locked or separated from the first brake locking end;
the primary wind power braking mechanism and the secondary wind power braking mechanism have the same structure;
the secondary wind power braking mechanism comprises: the second wind power sensing assembly, the second brake unlocking assembly and the second wind power brake assembly; the second wind power induction assembly comprises a second free sliding block and a second reset spring, the second free sliding block is propped against or separated from the first free sliding block, and the second free sliding block is arranged on the guide base in a sliding manner; one end of the second reset spring is connected with the second free sliding block, and the other end of the second reset spring is connected with the other end of the guide base.
2. The wind-driven generator based on the linear type graded wind-driven braking device according to claim 1, wherein the first wind-driven braking assembly further comprises a first limiting elastic piece, and the first limiting elastic piece is arranged on the first brake disc and abuts against the first brake unlocking piece, so that the first brake unlocking piece has a trend of locking with the first brake ratchet.
3. The wind driven generator based on the linear type grading wind braking device according to claim 2, further comprising a protective shell, wherein the protective shell is arranged on the supporting frame and is provided with a containing cavity, and the wind driven device and the power generation device are contained in the containing cavity; the graded wind power braking device part is accommodated in the accommodating cavity.
4. A wind generator based on a linear graded wind brake apparatus according to claim 3, wherein the sail is arranged outside the housing cavity; the grading wind power braking device further comprises a free connecting rod; one end of the free connecting rod is connected with the sail, and the other end of the free connecting rod stretches into the accommodating cavity and is connected with the first free sliding block.
5. A wind-driven generator based on a linear graded wind-power braking device according to claim 3, wherein the first support link is connected with the inner wall of the housing cavity.
6. The wind-driven generator based on the linear type grading wind-driven brake device according to claim 2, wherein the first brake unlocking piece is provided with a first lock catch matching end and a first linkage lock catch end, and the first lock catch matching end is locked or separated from the first brake lock catch end; the first linkage locking end is locked or separated from the first braking ratchet wheel.
7. The wind-driven generator based on the linear graded wind-power braking device according to claim 6, wherein the first linkage locking end is provided with a first hook, and the first hook is locked or separated from the first ratchet groove of the first braking ratchet wheel.
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| CN202110254849.1A CN112983744B (en) | 2021-03-09 | 2021-03-09 | Wind driven generator based on linear type grading wind power braking device |
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| CN202110254849.1A CN112983744B (en) | 2021-03-09 | 2021-03-09 | Wind driven generator based on linear type grading wind power braking device |
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