CN111608871A - Flexible wind wheel locking device of anti-typhoon wind generating set braking system - Google Patents
Flexible wind wheel locking device of anti-typhoon wind generating set braking system Download PDFInfo
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- CN111608871A CN111608871A CN202010420183.8A CN202010420183A CN111608871A CN 111608871 A CN111608871 A CN 111608871A CN 202010420183 A CN202010420183 A CN 202010420183A CN 111608871 A CN111608871 A CN 111608871A
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- wheel locking
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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
- F03D80/00—Details, components or accessories not provided for in groups F03D1/00 - F03D17/00
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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
Abstract
The invention discloses a flexible wind wheel locking device of a typhoon-resistant wind generating set braking system, which adopts a flexible wind wheel locking design scheme and comprises two rope collecting devices which are symmetrically distributed on the left side and the right side of a front end flange of a gear box and are connected with the left end and the right end of a swing trolley, wherein the swing trolley and a shell of a wind wheel locking pin component of the braking system are fixedly integrated, and the swing trolley can move in an arc-shaped guide rail slot hole of the front end flange of the gear box to drive a steel wire rope group of the rope collecting device on the left side or the right side to be tightened up and simultaneously drive one guide post in a middle frame at the bottom of the front end flange of the gear box to be pulled out, so that a spring sleeved on the guide post is pressed. The invention allows the wind wheel to swing within a certain angle, and when the wind wheel deviates from the positive Y position, the restoring force is larger, so that the load of the wind wheel and the whole machine is greatly reduced, and the integral design difficulty of the wind generating set is greatly reduced.
Description
Technical Field
The invention relates to the technical field of design of a braking system of a typhoon-resistant wind generating set, in particular to a flexible wind wheel locking device of the braking system of the typhoon-resistant wind generating set, which is used for locking a wind wheel under a typhoon-resistant working condition, so that the wind wheel can only swing within a certain angle range along a transmission axis and provides proper torsional rigidity.
Background
In the prior art, a megawatt three-blade typhoon-resistant wind generating set is generally controlled by a variable pitch propeller to feather three blades, so that a wind wheel freely idles, and excessive load on the whole generator is avoided. For a three-blade typhoon-resistant wind generating set, three blades need to be feathered, and then a wind wheel needs to be locked at the position of the blade, so that the load borne by the wind generating set is minimum. When the wind wheel rotates, the wind load born by the wind wheel is changed at different angle positions, and when the wind wheel is in the positive Y direction, namely one of the blades is vertically downwards, the wind load born by the wind wheel is smaller. However, if the wind wheel is locked completely, the unbalanced load of the wind wheel cannot be released, so that the instantaneous limit load of the wind generating set is increased remarkably, especially for a downwind typhoon-resistant wind generating set, the whole load of the wind generating set is very large at the typhoon limit wind speed by completely releasing or completely locking the wind wheel in the prior art, and in addition, for the design of the downwind three-blade typhoon-resistant wind generating set, the wind wheel is adopted to rotate freely in an unloaded mode, so that the wind wheel load is increased greatly.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, and provides a flexible wind wheel locking device of a braking system of a typhoon-resistant wind generating set, aiming at the problem that the load of the whole set is larger because the traditional typhoon-resistant generator set is completely locked or released to a wind wheel.
In order to achieve the purpose, the technical scheme provided by the invention is as follows: the flexible wind wheel locking device of the typhoon-resistant wind generating set braking system comprises a wind wheel locking disc, a gear box front end flange and a wind wheel locking pin assembly, wherein the wind wheel locking disc is fixedly connected with a hub of a wind wheel through a bolt; the flexible wind wheel locking device comprises a swing trolley, a first guide post, a second guide post, a guide post left end plate, a spring left end plate, a first spring, a partition plate, a second spring, a spring right end plate, a guide post right end plate and two rope collecting devices; the upper half part of the front end flange of the gear box is provided with an arc-shaped guide rail slotted hole extending along the circumferential direction of the gear box, and the left part and the right part of the arc-shaped guide rail slotted hole are in mirror symmetry relative to the vertical center line of the front end flange of the gear box; the swing trolley is arranged in the arc-shaped guide rail groove hole and can only move in the arc-shaped guide rail groove hole, two wind wheel locking pin assemblies are arranged in the arc-shaped guide rail groove hole and are positioned at the left side and the right side of the swing trolley, and shells of the two wind wheel locking pin assemblies are respectively connected with the left end and the right end of the swing trolley and are fixedly integrated, so that after the wind wheel locking pin extends out of the locked wind wheel, the rotation of the wind wheel can drive the two wind wheel locking pin assemblies to move along with the swing trolley in an angle range limited by the arc-shaped guide rail groove hole; the middle of the bottom of a flange at the front end of the gear box is provided with a frame for mounting springs, a spring left end plate, a first spring, a partition plate, a second spring and a spring right end plate are arranged in the frame, a first guide post and a second guide post are parallel to each other and horizontally inserted on the frame side by side up and down, one end of the first guide post penetrates through the left side of the frame to be connected with the guide post left end plate, the other end of the first guide post penetrates through the spring left end plate and the partition plate in sequence to be connected with the spring right end plate, one end of the second guide post penetrates through the right side of the frame to be connected with the guide post right end plate, the other end of the second guide post penetrates through the spring right end plate and the partition plate in sequence to be connected with the spring left end plate, two groups of the first springs are arranged between the spring left end plate and the partition plate and are respectively sleeved on the first guide post and the second guide post, the two ends of the first springs, the spring left end plate can slide on the first guide column, and the spring right end plate can slide on the second guide column; the two rope collecting devices are symmetrically distributed on the left side and the right side of a flange at the front end of the gear box and correspond to two wind wheel locking pin components, namely one wind wheel locking pin component is matched with one rope collecting device, the rope collecting device comprises a first steel wire rope group, a second steel wire rope group, a support, a first fixed pulley, a movable pulley, an auxiliary wheel and a second fixed pulley, the first fixed pulley, the movable pulley, the auxiliary wheel and the second fixed pulley are respectively installed on the support, the support is fixed on the flange at the front end of the gear box and is provided with two mutually symmetrical and vertically downward long slotted holes, the support is positioned between the two long-strip-shaped slotted holes, a shaft is transversely arranged on the support, the movable pulley is assembled on the shaft, two sides of the shaft, which extend out of the support, are respectively embedded into the two long-strip-shaped slotted holes, so that the movable pulley can move up and down within the range limited by the long-, and close to the corresponding extreme position of arc guide rail slotted hole, the second fixed pulley is established in the movable pulley below to a supporting auxiliary wheel, the auxiliary wheel is close to the second fixed pulley, and reserves the clearance that supplies second wire rope group to pass between them, first wire rope group one end and the shell fixed connection of corresponding wind wheel locking round pin subassembly, and its other end upwards connects on the flange of gear box front end after passing around fixed pulley and movable pulley downwards in proper order, and is close to first fixed pulley, second wire rope group one end fixed connection is in the bottom of supporting seat, and its other end is passed after the clearance between auxiliary wheel and the second fixed pulley downwards and is connected with corresponding guide post end plate around the second fixed pulley again.
Furthermore, the swing trolley adopts a double-layer double-row conical rolling wheel, and can bear additional bending moment generated on the wind wheel locking pin assembly.
Furthermore, the extreme positions at both ends of the arc-shaped guide rail slotted hole are provided with buffering parts so as to reduce the impact force generated when the wind wheel locking assembly swings to the extreme positions.
Further, the two rotor locking pin assemblies are spaced 60 apart.
The other technical scheme provided by the invention is as follows: the flexible wind wheel locking device of the typhoon-resistant wind generating set braking system comprises a wind wheel locking disc, a gear box front end flange and a wind wheel locking pin assembly, wherein the wind wheel locking disc is fixedly connected with a hub of a wind wheel through a bolt; the flexible wind wheel locking device comprises a swing trolley, a first guide post, a second guide post, a guide post left end plate, a spring left end plate, a first spring, a partition plate, a second spring, a spring right end plate, a guide post right end plate and two rope collecting devices; the upper half part of the front end flange of the gear box is provided with an arc-shaped guide rail slotted hole extending along the circumferential direction of the gear box, and the left part and the right part of the arc-shaped guide rail slotted hole are in mirror symmetry relative to the vertical center line of the front end flange of the gear box; the wind wheel locking pin assembly is arranged in the arc-shaped guide rail groove hole and can only move in the arc-shaped guide rail groove hole, one wind wheel locking pin assembly is arranged in the arc-shaped guide rail groove hole and is positioned at one side of the swing trolley, and a shell of the wind wheel locking pin assembly is connected with one end of the swing trolley and is fixed into a whole, so that after the wind wheel locking pin extends out of the locked wind wheel, the rotation of the wind wheel can drive the wind wheel locking pin assembly to move along with the swing trolley in an angle range limited by the arc-shaped guide rail groove hole; the middle of the bottom of a flange at the front end of the gear box is provided with a frame for mounting springs, a spring left end plate, a first spring, a partition plate, a second spring and a spring right end plate are arranged in the frame, a first guide post and a second guide post are parallel to each other and horizontally inserted on the frame side by side up and down, one end of the first guide post penetrates through the left side of the frame to be connected with the guide post left end plate, the other end of the first guide post penetrates through the spring left end plate and the partition plate in sequence to be connected with the spring right end plate, one end of the second guide post penetrates through the right side of the frame to be connected with the guide post right end plate, the other end of the second guide post penetrates through the spring right end plate and the partition plate in sequence to be connected with the spring left end plate, two groups of the first springs are arranged between the spring left end plate and the partition plate and are respectively sleeved on the first guide post and the second guide post, the two ends of the first springs, the spring left end plate can slide on the first guide column, and the spring right end plate can slide on the second guide column; the two rope winding devices are symmetrically distributed on the left side and the right side of a flange at the front end of the gear box, each rope winding device comprises a first steel wire rope group, a second steel wire rope group, a support, a first fixed pulley, a movable pulley, an auxiliary wheel and a second fixed pulley, the first fixed pulley, the movable pulley, the auxiliary wheel and the second fixed pulley are respectively installed on the support, the support is fixed on the flange at the front end of the gear box and is provided with two mutually symmetrical and vertically downward elongated slotted holes, the support is positioned between the two elongated slotted holes, a shaft is transversely arranged on the support, the movable pulley is assembled on the shaft, two sides of the shaft, which extend out of the support, are respectively inserted into the two elongated slotted holes, so that the movable pulley can move up and down along with the support within the range limited by the elongated slotted holes, the first fixed pulley is arranged above the movable pulley and close to the corresponding limit position of the slotted holes of the arc-shaped guide rails, and, an auxiliary wheel is matched, the auxiliary wheel is abutted against the second fixed pulley, and a gap for the second steel wire rope group to pass through is reserved between the auxiliary wheel and the second fixed pulley; one end of a first steel wire rope group of one of the rope winding devices is fixedly connected with a shell of the wind wheel locking pin assembly, the other end of the first steel wire rope group is connected to a flange at the front end of the gear box after sequentially passing around the first fixed pulley and the movable pulley downwards and is close to the first fixed pulley, one end of the first steel wire rope group of the other rope winding device is fixedly connected with the other end of the swing trolley, the other end of the first steel wire rope group is connected to the flange at the front end of the gear box after sequentially passing around the first fixed pulley and the movable pulley downwards and is close to the first fixed pulley, one end of a second steel wire rope group of the two rope winding devices is fixedly connected to the bottom of the supporting seat, and the other end of the first steel wire rope group of the other rope winding device is connected with a corresponding guide column end plate.
Furthermore, the swing trolley adopts a double-layer double-row conical rolling wheel, and can bear additional bending moment generated on the wind wheel locking pin assembly.
Furthermore, the extreme positions at both ends of the arc-shaped guide rail slotted hole are provided with buffering parts so as to reduce the impact force generated when the wind wheel locking assembly swings to the extreme positions.
Compared with the prior art, the invention has the following advantages and beneficial effects:
1. the invention adopts a flexible wind wheel locking design scheme, allows the wind wheel to swing within a certain angle such as +/-30 degrees, provides restoring force for the wind wheel, the larger the angle deviation from the positive Y position is, the larger the restoring force is, before the typhoon arrives, the wind wheel is locked at the positive Y direction position with the minimum stress on the blades, allows the wind wheel to swing within a certain angle such as +/-27 degrees after the typhoon arrives, and after the wind wheel is blown away from the positive Y position by the typhoon, when the wind power is reduced, the wind wheel can return to the positive Y position, thereby obviously reducing the complete machine load under the typhoon working condition.
2. The flexible wind wheel locking device of the invention is safe in operation of the wind generating set and needs high reliability. Therefore, the invention adopts a mechanical structure combined by the spring and the steel wire rope group to realize the locking function of the flexible wind wheel, avoids using complex electric and hydraulic devices, namely no complex electric and hydraulic structure, and has very high reliability.
3. The springs can be designed according to the requirements of wind wheel locking limit moment and restoring force, different locking rigidities can be designed, and the requirement of complete machine load design is met.
4. The invention provides an effective solution for reducing the overall design load of the downwind three-blade typhoon-resistant fan set by reducing the locking rigidity of the wind wheel.
5. The invention directly locks on the wind wheel hub side of the wind generating set and does not pass through the gear box of the wind generating set, so that the gear box is not damaged, and the reliability of the set is improved.
Drawings
Fig. 1 is a partial schematic view of a braking system of a typhoon-resistant wind turbine generator system in embodiment 1.
Fig. 2 is a front view of the flexible wind wheel locking device in embodiment 1.
Fig. 3 is an axial view of the flexible wind wheel locking device in embodiment 1.
Fig. 4 is a partial sectional view of the flexible wind wheel locking device in embodiment 1.
FIG. 5 is a sectional view of the swing car of embodiment 1 after being installed in the slot of the arc-shaped guide rail.
Fig. 6 is a front view of the flexible wind wheel locking device in embodiment 2.
Detailed Description
The present invention will be further described with reference to the following specific examples.
Example 1
The flexible wind wheel locking device provided by the embodiment is mainly used for a braking system of a typhoon-resistant wind turbine generator system, as shown in fig. 1, the braking system mainly comprises a wind wheel locking disc 16, a gear box front end flange 3 and a wind wheel locking pin assembly 2, the wind wheel locking disc 16 is fixedly connected with a hub 17 of a wind wheel (not shown in the figure) through bolts, the gear box front end flange 3 is a part of the gear box of the wind turbine generator system and is fixedly connected with a generator (not shown in the figure) and a cabin shell 18 of the wind turbine generator system respectively through bolts, the wind wheel locking pin assembly 2 comprises a wind wheel locking pin 201 and a driving device (not shown in the figure) for driving the wind wheel locking pin 201 to extend out or retract, when the wind wheel needs to be locked, a locking hole on the wind wheel locking disc 16 is aligned with the wind wheel locking pin 201, then the wind wheel locking pin 201 extends into the locking hole on the wind, thereby locking the rotor by locking the rotor locking disc 16, enabling the flexible rotor locking means to function.
Referring to fig. 2 to 4, the flexible wind wheel locking device according to the embodiment includes a swing trolley 1, a first guide column 5, a second guide column 9, a guide column left end plate 6, a spring left end plate 10, a first spring 11, a partition plate 12, a second spring 13, a spring right end plate 14, a guide column right end plate 7, and two rope retracting devices 8. The upper half part of the front end flange 3 of the gear box is provided with an arc-shaped guide rail slotted hole 4 extending along the circumferential direction of the gear box, and the left part and the right part of the arc-shaped guide rail slotted hole 4 are in mirror symmetry relative to the vertical center line of the front end flange 3 of the gear box; the swing trolley 1 is arranged in the arc-shaped guide rail slot hole 4 and can only move in the arc-shaped guide rail slot hole 4, the wind wheel locking pin assemblies 2 are provided with two parts which are arranged in the arc-shaped guide rail slot hole 4 and are positioned at the left side and the right side of the swing trolley 1, the shells of the two wind wheel locking pin assemblies 2 are respectively connected with the left end and the right end of the swing trolley 1 and are fixedly integrated, so that after the wind wheel locking pin 201 extends out of the locked wind wheel, the rotation of the wind wheel can drive the two wind wheel locking pin assemblies 2 to move along with the swing trolley 1 in the angle range limited by the arc-shaped guide rail slot hole 4, and the limit positions at the two ends of the arc-shaped guide rail slot hole 4 are both provided with buffer parts (according to the shape of the arc-shaped guide rail slot hole 4, a rubber base plate or a rubber spring is customized and is used for buffering, the impact force generated when the wind wheel locking assembly 2 swings to the extreme position is reduced; the spring left end plate 10, the first spring 11, the partition plate 12, the second spring 13 and the spring right end plate 14 are arranged in the frame 15, the first guide column 5 and the second guide column 9 are parallel to each other and horizontally inserted on the frame 15 side by side up and down, one end of the first guide column 5 penetrates through the left side of the frame 15 to be connected with the guide column left end plate 6, the other end thereof penetrates through the spring left end plate 10 and the partition plate 12 in sequence to be connected with the spring right end plate 14, one end of the second guide column 9 penetrates through the right side of the frame 15 to be connected with the guide column right end plate 7, the other end thereof penetrates through the spring right end plate 14 and the partition plate 12 in sequence to be connected with the spring left end plate 10, two groups of the first springs 11 are arranged between the spring left end plate 10 and the partition plate 12 and are respectively sleeved on the first guide column 5 and the second guide column 9, the two ends thereof are respectively connected with the spring left end plate 10 and the partition plate 12, two groups of the second springs 13 are arranged between the partition plate, the two ends of the first guide column 5 and the second guide column 9 are respectively connected with a partition plate 12 and a spring right end plate 14, the partition plate 12 can slide on the first guide column 5 and the second guide column 9, the spring left end plate 10 can slide on the first guide column 5, and the spring right end plate 14 can slide on the second guide column 9; the two rope retracting devices 8 are symmetrically distributed on the left side and the right side of the flange 3 at the front end of the gear box and correspond to the two wind wheel locking pin assemblies 2, namely, one wind wheel locking pin assembly 2 is matched with one rope retracting device 8; the rope winding device 8 comprises a first steel wire rope group 801, a second steel wire rope group 806, a support 807, a first fixed pulley 802, a movable pulley 803 with a support 808, an auxiliary wheel 804 and a second fixed pulley 805 which are respectively arranged on the support 807, wherein the support 807 is fixed on the flange 3 at the front end of the gear box and is formed with two mutually symmetrical and vertically downward strip-shaped slotted holes 809, the support 808 is positioned between the two strip-shaped slotted holes 809, a shaft 810 is transversely arranged on the support 808, the movable pulley 803 is assembled on the shaft 810, two sides of two ends of the shaft 810 extending out of the support 808 are respectively embedded and inserted into the two strip-shaped slotted holes 809, so that the movable pulley 803 can move up and down along with the support 808 in a range limited by the strip-shaped slotted holes 809, the first fixed pulley 802 is arranged above the movable pulley 803 and is close to the corresponding limit position of the arc-shaped slotted hole 4, the second fixed pulley 805 is arranged below the movable pulley 803, and is matched with an auxiliary wheel 804, the auxiliary wheel 804 abuts against the second fixed pulley 805, a gap for the second wire rope set 806 to pass through is reserved between the second fixed pulley and the auxiliary wheel 805, one end of the first wire rope set 801 is fixedly connected with a shell of the corresponding wind wheel locking pin assembly 2, the other end of the first wire rope set is connected to the front end flange 3 of the gear box after sequentially passing through the fixed pulley 802 and the movable pulley 803 downwards, and is close to the first fixed pulley 802, one end of the second wire rope set 806 is fixedly connected to the bottom of the supporting seat 808, and the other end of the second wire rope set passes through the gap between the auxiliary wheel 804 and the second fixed pulley 805 downwards and then is connected with the corresponding guide column end plate after passing through the second fixed pulley 805.
Since the support of all components of the flexible wind wheel locking device is arranged on the front end flange 3 of the gearbox, the structure and size of the flange need to be designed according to installation and bearing requirements. In addition, the angle range of the arc-shaped guide rail slot hole 4 is determined according to the design requirements, the requirement of the swinging stroke of the wind wheel locking assembly at +/-30 degrees is generally met, and the surface of the arc-shaped guide rail needs to be subjected to surface hardening treatment.
The two wind wheel locking pin assemblies 2 need to be separated by 60 degrees, and the requirements of different locking states of one blade in the horizontal or vertical direction are met. In addition, the wind wheel locking pin is designed according to the limit locking moment, and the driving device of the wind wheel locking pin can be manually or electrically operated. Because the wind wheel locking pin assembly 2 needs to swing along with the swing trolley 1, the electric device needs to be additionally provided with a rotary retracting or swinging retracting device of a cable. A limiting device can be added on the wind wheel locking pin assembly 2, and under the maintenance working condition, the wind wheel is locked by the limiting device, so that the wind wheel is completely locked. The limiting device of the wind wheel locking assembly 2 can adopt a bolt type or a locking hole is formed at the tail part of the assembly, and then a locking pin device fixed on a flange 3 at the front end of the gear box is connected in series for locking.
Referring to fig. 5, the support shaft 101 and the support 102 of the swing trolley 1 are designed according to strength, the support 102 may adopt a frame-type split structure, the two split parts are connected and pre-tightened by bolt connection, the conical rolling wheel 103 is supported by a ball bearing or a roller bearing, i.e. a double-layer double-row conical rolling is adopted, the swing trolley 1 may further increase the radial rolling wheel to bear radial force, and the conical rolling wheel 103 may also be designed as a cylindrical or spherical roller to bear bending moment, radial force and axial force in cooperation with the shape of the guide rail. In addition, the swing trolley 1 needs to bear the additional bending moment generated by the wind wheel locking pin component 2, so the preferable scheme is to adopt a double-layer double-row conical rolling wheel to bear the additional bending moment and radial and axial forces.
The number of the steel wire ropes in the steel wire rope group is determined according to the design requirement: the design of the steel wire rope needs to take more than 5 times of safety factor, and the steel wire rope with small diameter or large diameter can be used and determined by combining the requirement of installation space. The steel wire rope needs to consider the corrosion prevention requirement of the offshore environment, and the steel wire rope made of stainless steel materials is preferably selected. The design of the pulley meets the requirements of supporting and transferring load of the steel wire rope, and the diameter of the pulley meets the design specification of the hoisting industry. In principle, any type of spring that meets both the load-bearing and stroke requirements can be used to form the spring. Because the bearing capacity of the extension spring is limited and the connection reliability is low, a compression spring is required to be used as a spring. Preferably, the compression springs are cylindrical and spiral compression springs with circular cross sections, and the number of the springs is determined according to the requirement of bearing capacity. Cylindrical coil springs with rectangular and other non-circular cross sections can be selected, and combined springs can be used for improving the bearing capacity. The special-shaped spring or the combined spring of the springs with different specifications and types can be selected according to the requirement of the stiffness curve.
Because the swing arc length of the wind wheel locking pin assembly 2 is very large, a compression spring meeting the requirement of such a large stroke is very long, the installation space occupies a very large space, and the problem of compression stability exists. For this purpose, a movable pulley 803 is used to reduce the stroke by half, and two compression springs are connected in series to meet the stroke requirement.
When the swing trolley 1 moves rightwards on the arc-shaped guide rail slot hole 4, the first steel wire rope group 801 connected with the left side of the swing trolley 1 and the wind wheel locking pin 2 is driven to move upwards, and then the movable pulley 803 is driven to move upwards, the second steel wire rope group 806 connected with the supporting seat 808 of the movable pulley 803 drives the guide column left end plate 6 to move leftwards, the first guide column 5 generates pulling force on the spring right end plate 14, and therefore the two groups of springs are compressed, and the two groups of springs generate restoring force. When the first wire rope group 801 on the left drives the movable pulley 803 to move downwards, the second wire rope group 806 is downward anti-loose, no acting force is generated, and the second wire rope group 806 is ensured to return through the auxiliary wheel 804. When the swing trolley 1 moves leftwards on the arc-shaped guide rail slot hole 4, the first steel wire rope group 801 connected with the right side of the swing trolley 1 and the wind wheel locking pin 2 is driven to move upwards, and then the movable pulley 803 is driven to move upwards, the second steel wire rope group 806 connected with the supporting seat 808 of the movable pulley 803 drives the right end plate 7 of the guide post to move rightwards, and the second guide post 9 generates pulling force on the left end plate 10 of the spring, so that the two groups of springs are compressed, and the two groups of springs generate restoring force. When the first wire rope group 801 on the right side drives the movable pulley 803 to move downwards, the second wire rope group 806 is downward anti-loose, no acting force is generated, and the second wire rope group 806 is ensured to return through the auxiliary wheel 804.
In summary, the principle of the flexible wind wheel locking device is as follows: after the wind wheel locking pin 201 extends out to lock the wind wheel, the shell of the wind wheel locking pin assembly 2 is fixedly connected with the swing trolley 1, and the rotation of the wind wheel drives the wind wheel locking pin assembly 2 and the swing trolley 1 to rotate together. The swing trolley 1 can only move in the arc-shaped guide rail slot hole 4 on the flange 3 at the front end of the gear box, so that the wind wheel is limited to swing only in the angle range limited by the arc-shaped guide rail slot hole 4.
When the first wire rope group 801 of the left rope winding device 8 drives the movable pulley 803 to move upwards, the second wire rope group 806 drives the guide post left end plate 6 to move leftwards, the first guide post 5 generates a pulling force on the spring group right end plate 14, so that the first spring 11 and the second spring 13 are compressed, and the generated restoring force can enable the wind wheel to return to the vertical position. When the first wire rope group 801 of the rope collecting device 8 drives the movable pulley 803 to move downwards, the second wire rope group 806 is downward anti-loose, no acting force is generated, and the wire rope group is ensured to return through the auxiliary wheel 804. When the first wire rope group 801 of the right rope collecting device 8 drives the movable pulley 803 to move upwards, the situation is just opposite, and the wind wheel can still return to the vertical position by the restoring force generated by the first spring 11 and the second spring 13.
Example 2
Referring to fig. 6, the difference from embodiment 1 is that only one wind wheel locking pin assembly 2 is used in this embodiment, the outer shell of the wind wheel locking pin assembly 2 is connected with one end of the swing trolley 1, and is fixed as a whole, similarly, two rope winding devices 8 are symmetrically distributed on the left and right sides of the front end flange 3 of the gear box, wherein the first steel wire rope group 801 of one rope winding device 8 is connected with the outer shell of the wind wheel locking pin assembly 2, and the first steel wire rope group 801 of the other rope winding device 8 is connected with the other end of the swing trolley 1.
The above-mentioned embodiments are merely preferred embodiments of the present invention, and the scope of the present invention is not limited thereto, so that variations based on the shape and principle of the present invention should be covered within the scope of the present invention.
Claims (7)
1. A flexible wind wheel locking device of a typhoon-resistant wind generating set braking system comprises a wind wheel locking disc (16), a gear box front end flange (3) and a wind wheel locking pin assembly (2), the wind wheel locking disc (16) is fixedly connected with a hub (17) of the wind wheel through bolts, the front end flange (3) of the gear box is a part of the gear box of the wind generating set, which are respectively connected and fixed with a generator of the wind generating set and a cabin shell (18) through bolts, the wind wheel locking pin assembly (2) comprises a wind wheel locking pin (201) and a driving device for driving the wind wheel locking pin (201) to extend or retract, under the action of the driving device, the wind wheel locking pin (201) can extend into a locking hole on the wind wheel locking disc (16), so that the wind wheel is locked by locking the wind wheel locking disc (16); the method is characterized in that: the flexible wind wheel locking device comprises a swing trolley (1), a first guide column (5), a second guide column (9), a guide column left end plate (6), a spring left end plate (10), a first spring (11), a partition plate (12), a second spring (13), a spring right end plate (14), a guide column right end plate (7) and two rope retracting devices (8); the upper half part of the front end flange (3) of the gear box is provided with an arc-shaped guide rail slotted hole (4) extending along the circumferential direction of the gear box, and the left part and the right part of the arc-shaped guide rail slotted hole (4) are in mirror symmetry relative to the vertical center line of the front end flange (3) of the gear box; the swing trolley (1) is arranged in the arc-shaped guide rail groove hole (4) and can only move in the arc-shaped guide rail groove hole (4), two wind wheel locking pin assemblies (2) are arranged in the arc-shaped guide rail groove hole (4) and are positioned on the left side and the right side of the swing trolley (1), and shells of the two wind wheel locking pin assemblies (2) are respectively connected with the left end and the right end of the swing trolley (1) and are fixed into a whole, so that after the wind wheel locking pin extends out of the locked wind wheel, the rotation of the wind wheel can drive the two wind wheel locking pin assemblies (2) to move in an angle range limited by the arc-shaped guide rail groove hole (4) along with the swing trolley (1); a frame (15) used for installing a spring is formed in the middle of the bottom of a gear box front end flange (3), a spring left end plate (10), a first spring (11), a partition plate (12), a second spring (13) and a spring right end plate (14) are arranged in the frame (15), a first guide column (5) and a second guide column (9) are parallel to each other and horizontally inserted on the frame (15) side by side up and down, one end of the first guide column (5) penetrates through the left side of the frame (15) to be connected with a guide column left end plate (6), the other end of the first guide column penetrates through the spring left end plate (10) and the partition plate (12) in sequence to be connected with a spring right end plate (14), one end of the second guide column (9) penetrates through the right side of the frame (15) and a guide column right end plate (7), and the other end of the second guide column penetrates through the spring right end plate (14) and the partition plate (12) in sequence to be connected with the spring, the two groups of first springs (11) are arranged between a spring left end plate (10) and a partition plate (12) and are respectively sleeved on a first guide column (5) and a second guide column (9), the two ends of the first springs are respectively connected with the spring left end plate (10) and the partition plate (12), the two groups of second springs (13) are arranged between the partition plate (12) and a spring right end plate (14) and are respectively sleeved on the first guide column (5) and the second guide column (9), the two ends of the second springs are respectively connected with the partition plate (12) and the spring right end plate (14), the partition plate (12) can slide on the first guide column (5) and the second guide column (9), the spring left end plate (10) can slide on the first guide column (5), and the spring right end plate (14) can slide on the second guide column (9); the two rope winding devices (8) are symmetrically distributed on the left side and the right side of a flange (3) at the front end of the gear box and correspond to two wind wheel locking pin assemblies (2), namely one wind wheel locking pin assembly (2) is matched with one rope winding device (8), each rope winding device (8) comprises a first steel wire rope group (801), a second steel wire rope group (806), a support (807), a first fixed pulley (802), a movable pulley (803) with a support seat (808), an auxiliary wheel (804) and a second fixed pulley (805) which are respectively arranged on the support (807), the support (807) is fixed on the flange (3) at the front end of the gear box and is provided with two vertically downward long slotted holes (809) which are symmetrical to each other, the support seat (808) is positioned between the two long slotted holes (809), a shaft (810) is transversely arranged on the support seat (808), and the movable pulley (803) is assembled on the shaft (810), and the two sides of the shaft (810) extending out of the support base (808) are respectively inserted into two strip-shaped slotted holes (809) so that the movable pulley (803) can move up and down along with the support base (808) within the range defined by the strip-shaped slotted holes (809), the first fixed pulley (802) is arranged above the movable pulley (803) and close to the corresponding limit position of the arc-shaped guide rail slotted hole (4), the second fixed pulley (805) is arranged below the movable pulley (803) and is matched with an auxiliary wheel (804), the auxiliary wheel (804) is abutted against the second fixed pulley (805), a gap for the second wire rope group (806) to pass through is reserved between the first fixed pulley (803) and the second fixed pulley (805), one end of the first wire rope group (801) is fixedly connected with the shell of the corresponding wind wheel locking pin assembly (2), and the other end thereof sequentially rounds the first fixed pulley (802) and the movable pulley (803) downwards and then is connected with the front end flange (3) of the gear box, and close to the first fixed pulley (802), one end of the second wire rope group (806) is fixedly connected to the bottom of the supporting seat (808), and the other end of the second wire rope group passes through a gap between the auxiliary wheel (804) and the second fixed pulley (805) downwards and then is connected with a corresponding guide column end plate by bypassing the second fixed pulley (805).
2. The flexible wind wheel locking device of the typhoon-resistant wind generating set braking system according to claim 1, characterized in that: the swing trolley (1) adopts a double-layer double-row conical rolling wheel, and can bear additional bending moment generated on the wind wheel locking pin assembly.
3. The flexible wind wheel locking device of the typhoon-resistant wind generating set braking system according to claim 1, characterized in that: buffering parts are installed at the extreme positions of the two ends of the arc-shaped guide rail groove hole (4) so as to reduce the impact force generated when the wind wheel locking assembly (2) swings to the extreme positions.
4. The flexible wind wheel locking device of the typhoon-resistant wind generating set braking system according to claim 1, characterized in that: the two wind wheel locking pin assemblies (2) are spaced at 60 degrees.
5. A flexible wind wheel locking device of a typhoon-resistant wind generating set braking system comprises a wind wheel locking disc (16), a gear box front end flange (3) and a wind wheel locking pin assembly (2), the wind wheel locking disc (16) is fixedly connected with a hub (17) of the wind wheel through bolts, the front end flange (3) of the gear box is a part of the gear box of the wind generating set, which are respectively connected and fixed with a generator of the wind generating set and a cabin shell (18) through bolts, the wind wheel locking pin assembly (2) comprises a wind wheel locking pin (201) and a driving device for driving the wind wheel locking pin (201) to extend or retract, under the action of the driving device, the wind wheel locking pin (201) can extend into a locking hole on the wind wheel locking disc (16), so that the wind wheel is locked by locking the wind wheel locking disc (16); the method is characterized in that: the flexible wind wheel locking device comprises a swing trolley (1), a first guide column (5), a second guide column (9), a guide column left end plate (6), a spring left end plate (10), a first spring (11), a partition plate (12), a second spring (13), a spring right end plate (14), a guide column right end plate (7) and two rope retracting devices (8); the upper half part of the front end flange (3) of the gear box is provided with an arc-shaped guide rail slotted hole (4) extending along the circumferential direction of the gear box, and the left part and the right part of the arc-shaped guide rail slotted hole (4) are in mirror symmetry relative to the vertical center line of the front end flange (3) of the gear box; the swing trolley (1) is arranged in the arc-shaped guide rail groove hole (4) and can only move in the arc-shaped guide rail groove hole (4), one wind wheel locking pin component (2) is arranged in the arc-shaped guide rail groove hole (4) and is positioned on one side of the swing trolley (1), and a shell of the wind wheel locking pin component (2) is connected with one end of the swing trolley (1) and is fixedly integrated, so that after a wind wheel locking pin extends out of a locked wind wheel, the rotation of the wind wheel can drive the wind wheel locking pin component (2) to move in an angle range limited by the arc-shaped guide rail groove hole (4) along with the swing trolley (1); a frame (15) used for installing a spring is formed in the middle of the bottom of a gear box front end flange (3), a spring left end plate (10), a first spring (11), a partition plate (12), a second spring (13) and a spring right end plate (14) are arranged in the frame (15), a first guide column (5) and a second guide column (9) are parallel to each other and horizontally inserted on the frame (15) side by side up and down, one end of the first guide column (5) penetrates through the left side of the frame (15) to be connected with a guide column left end plate (6), the other end of the first guide column penetrates through the spring left end plate (10) and the partition plate (12) in sequence to be connected with a spring right end plate (14), one end of the second guide column (9) penetrates through the right side of the frame (15) and a guide column right end plate (7), and the other end of the second guide column penetrates through the spring right end plate (14) and the partition plate (12) in sequence to be connected with the spring, the two groups of first springs (11) are arranged between a spring left end plate (10) and a partition plate (12) and are respectively sleeved on a first guide column (5) and a second guide column (9), the two ends of the first springs are respectively connected with the spring left end plate (10) and the partition plate (12), the two groups of second springs (13) are arranged between the partition plate (12) and a spring right end plate (14) and are respectively sleeved on the first guide column (5) and the second guide column (9), the two ends of the second springs are respectively connected with the partition plate (12) and the spring right end plate (14), the partition plate (12) can slide on the first guide column (5) and the second guide column (9), the spring left end plate (10) can slide on the first guide column (5), and the spring right end plate (14) can slide on the second guide column (9); the two rope collecting devices (8) are symmetrically distributed on the left side and the right side of a flange (3) at the front end of the gear box, each rope collecting device (8) comprises a first steel wire rope group (801), a second steel wire rope group (806), a support (807), a first fixed pulley (802), a movable pulley (803) with a support seat (808), an auxiliary wheel (804) and a second fixed pulley (805), wherein the first fixed pulley (802), the auxiliary wheel and the second fixed pulley (807) are respectively installed on the support (807), the support (807) is fixed on the flange (3) at the front end of the gear box and is provided with two symmetrical and vertically downward elongated slotted holes (809), the support seat (808) is positioned between the two elongated slotted holes (809), a shaft (810) is transversely arranged on the support seat (808), the movable pulley (803) is assembled on the shaft (810), and two sides of two ends of the shaft (810) extending out of the support seat (808) are respectively embedded into the two elongated slotted holes (809, enabling the movable pulley (803) to move up and down along with the supporting seat (808) within the range limited by the elongated slotted hole (809), wherein the first fixed pulley (802) is arranged above the movable pulley (803) and close to the corresponding limit position of the arc-shaped guide rail slotted hole (4), the second fixed pulley (805) is arranged below the movable pulley (803) and is matched with an auxiliary wheel (804), the auxiliary wheel (804) is abutted against the second fixed pulley (805), and a gap for the second steel wire rope group (806) to pass through is reserved between the auxiliary wheel and the second fixed pulley (805); one end of a first steel wire rope group (801) of one rope winding device (8) is fixedly connected with a shell of the wind wheel locking pin assembly (2), the other end of the first steel wire rope group (801) of the other rope winding device (8) sequentially rounds a fixed pulley (802) and a movable pulley (803) downwards and then is connected to a front end flange (3) of the gear box upwards and is close to the first fixed pulley (802), one end of a first steel wire rope group (801) of the other rope winding device (8) is fixedly connected with the other end of the swing trolley (1), the other end of the first steel wire rope group (801) sequentially rounds a fixed pulley (802) and a movable pulley (803) downwards and then is connected to a front end flange (3) of the gear box and is close to the first fixed pulley (802), one end of a second steel wire rope group (806) of the two rope winding devices (8) is fixedly connected to the bottom of a supporting seat (808), and the other end of the second steel wire rope group (806) sequentially rounds a gap between an auxiliary pulley (804) and a second fixed pulley The plates are connected.
6. The flexible wind wheel locking device of the typhoon-resistant wind generating set braking system according to claim 5, characterized in that: the swing trolley (1) adopts a double-layer double-row conical rolling wheel, and can bear additional bending moment generated on the wind wheel locking pin assembly.
7. The flexible wind wheel locking device of the typhoon-resistant wind generating set braking system according to claim 5, characterized in that: buffering parts are installed at the extreme positions of the two ends of the arc-shaped guide rail groove hole (4) so as to reduce the impact force generated when the wind wheel locking assembly (2) swings to the extreme positions.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010420183.8A CN111608871A (en) | 2020-05-18 | 2020-05-18 | Flexible wind wheel locking device of anti-typhoon wind generating set braking system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010420183.8A CN111608871A (en) | 2020-05-18 | 2020-05-18 | Flexible wind wheel locking device of anti-typhoon wind generating set braking system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112283020A (en) * | 2020-10-29 | 2021-01-29 | 上海电气风电集团股份有限公司 | Wind wheel locking device and wind generating set comprising same |
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2020
- 2020-05-18 CN CN202010420183.8A patent/CN111608871A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112283020A (en) * | 2020-10-29 | 2021-01-29 | 上海电气风电集团股份有限公司 | Wind wheel locking device and wind generating set comprising same |
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