CN114320783A - Locking system and wind generating set - Google Patents

Abstract

The invention relates to a locking system and a wind generating set, wherein the locking system is used for locking the relative positions of a first component and a second component which are connected in a rotating mode, and comprises a base, a pin assembly and a locking mechanism, wherein the base is provided with a plurality of locking holes which are respectively conical holes and are circumferentially spaced and uniformly distributed on the base; in the annular direction, the first locking pin, the second locking pin and the third locking pin are distributed at intervals, the first locking pin and the second locking pin are arranged adjacently and form a first included angle with the second locking pin, a second included angle is formed between the first locking pin and the adjacent third locking pin, a third included angle is formed between the second locking pin and the adjacent third locking pin, and the second included angle is equal to the third included angle and is larger than zero in absolute value of difference between the second included angle and the first included angle. The embodiment of the invention can meet the locking requirement of the impeller.

Description

Locking system and wind generating set

Technical Field

The invention relates to the technical field of wind power, in particular to a locking system and a wind generating set.

Background

A wind generating set is a device for converting wind energy into electric energy. When the unit is operated, various devices in the impeller need to be maintained, and when internal parts of the impeller are maintained, maintenance personnel need to enter the impeller. In order to ensure the life safety of workers and avoid the rotation of the impeller under the action of wind load when the impeller is maintained, the workers must lock the impeller before entering the impeller so that the impeller cannot rotate, and then the workers can enter the impeller to perform maintenance operation, thereby ensuring the personal safety of the workers. When single blades of some wind generating sets are hoisted or replaced, the impellers also need to be locked.

Conventional impeller locking is typically achieved by inserting a pin mounted on a stationary component into a rotating component. For low power wind generators, it is common that one locking pin can take the maintenance load of the impeller. However, for large wind driven generators, especially when single blades are hoisted and replaced, the load is large, and one locking pin is difficult to realize bearing huge load. Therefore, multi-pin locking is increasingly being investigated. In the prior locking system, a plurality of pins work simultaneously, and the problem exists that the impeller has two degrees of freedom of rotating clockwise and anticlockwise, after the first pin is inserted, the impeller cannot rotate, and all the degrees of freedom are limited. When the latter pin is inserted, the pin of the conventional solution must have sufficient precision to ensure its insertion in the desired position. However, manufacturing variations are present objectively and almost inevitably. The actual situation with the conventional locking pin solution is that after the first pin is inserted, the remaining pins are not perfectly aligned with the corresponding locking holes, and are difficult to insert to the desired position, which is detrimental to the locking requirements of the impeller.

Disclosure of Invention

The embodiment of the invention provides a locking system and a wind generating set, wherein the locking system can realize multi-pin locking and meet the locking requirement of an impeller.

In one aspect, there is provided a locking system for locking the relative positions of a first and a second rotationally connected component, the locking system comprising: the base is provided with a plurality of locking holes which are respectively conical holes and are circumferentially spaced and uniformly distributed in the base, and the base can be arranged on the first component; the pin assembly comprises a first locking pin, a second locking pin and at least one third locking pin which are respectively in plug-in fit with any locking hole; the round pin subassembly can set up in the second part and in the hoop, first locking pin, second stop pin and third stop pin interval distribution, first locking pin and second stop pin adjacent set up and with the second stop pin between form first contained angle, form the second contained angle between first locking pin and the adjacent third stop pin, form the third contained angle between second stop pin and the adjacent third stop pin, wherein, the second contained angle equals third contained angle and the absolute value of difference between second contained angle and the first contained angle is greater than zero.

According to an aspect of the embodiment of the present invention, the sum of the numbers of the first locking pin, the second locking pin and the third locking pin is n, n ≧ 3, the angle value of the first included angle is (360 °/n) +2a, and the angle values of the second included angle and the third included angle are (360 °/n) -a, respectively, where a is a constant.

According to an aspect of the embodiment of the present invention, the absolute value of a is 0.02 or more and 2 or less.

According to an aspect of the embodiment of the present invention, the number of the third locking pins is two or more, the sum n of the numbers is greater than or equal to 4, a fourth included angle is formed between two adjacent third locking pins in the ring-up direction, and the value of the fourth included angle is 360 °/n.

According to an aspect of the embodiment of the present invention, the sum of the number of the first locking pins, the second locking pins, and the third locking pins is n, and the number of the locking holes is an integer multiple of n.

According to an aspect of the embodiment of the present invention, the locking system further includes a driving part to which the first locking pin, the second locking pin, and the third locking pin are respectively connected, the driving part driving the first locking pin, the second locking pin, and the third locking pin to be inserted into or separated from the oppositely disposed locking holes in a predetermined timing.

According to an aspect of an embodiment of the present invention, the base has a disk shape, and the plurality of locking holes respectively extend in an axial direction of the base; alternatively, the base is shaped like a disk, and the plurality of locking holes respectively extend in the radial direction of the base.

According to an aspect of the embodiment of the present invention, the locking hole is a conical hole, and the cross sections of the first locking pin, the second locking pin, and the third locking pin in the axial direction thereof are each circular; or the locking hole is a pyramid hole, and the cross section of each of the first locking pin, the second locking pin and the third locking pin in the axial direction of the locking hole is polygonal.

According to an aspect of the embodiment of the present invention, the first locking pin, the second locking pin and the third locking pin are tapered pins and have the same structure.

In another aspect, an embodiment of the present invention provides a wind turbine generator system, including: a first member; the second part is rotatably connected with the first part, the base is arranged on the first part, the pin assembly is arranged on the second part and arranged facing the base, the first locking pin, the second locking pin and the third locking pin are distributed at intervals in the circumferential direction of the base, the first locking pin and the second locking pin are arranged adjacently and form a first included angle with the second locking pin, the first locking pin and the adjacent third locking pin form a second included angle, the second locking pin and the adjacent third locking pin form a third included angle, and the second included angle is equal to the third included angle and the absolute value of the difference between the second included angle and the first included angle is larger than zero.

According to another aspect of an embodiment of the invention, one of the first and second components is an impeller and the other is a nacelle; or one of the first component and the second component is a rotor of the generator and the other is a stator of the generator; alternatively, one of the first member and the second member is a moving axis of the shafting structure and the other is a fixed axis of the shafting structure.

According to another aspect of an embodiment of the present invention, the base is of unitary construction with the first member.

According to the locking system and the wind generating set provided by the embodiment of the invention, the locking system comprises a base and a pin assembly, a plurality of locking holes which are arranged at intervals and are uniformly arranged are arranged on the base, the locking holes are conical holes, the pin assembly comprises a first locking pin, a second locking pin and at least one third locking pin, the first locking pin, the second locking pin and the at least one third locking pin are in inserted connection and match with any locking hole, the base can be arranged on a first component, the pin assembly can be arranged on a second component, in the circumferential direction of the base, the first locking pin and the second locking pin can be arranged adjacently, a first included angle is formed between the first locking pin and the adjacent third locking pin, a third included angle is formed between the second locking pin and the adjacent third locking pin, the second included angle is equal to the third included angle, the absolute value of the difference value between the second included angle and the first included angle is larger than zero, and when the component to be locked, which is connected with the base, is locked in the clockwise direction and the anticlockwise direction The first locking pin and the second locking pin can be in contact stress with the base on two sides of the annular direction, and the rest locking pins are in contact stress with the base on one side of the annular direction, so that each locking pin plays a role in the locking process, and the situation that the locking pins cannot be inserted into the corresponding locking holes due to processing and assembling errors can be avoided, and the locking requirement is met.

Drawings

Features, advantages and technical effects of exemplary embodiments of the present invention will be described below with reference to the accompanying drawings.

FIG. 1 is a schematic structural view of a wind turbine generator system according to an embodiment of the present invention;

FIG. 2 is a schematic structural diagram of a locking system of one embodiment of the present invention;

FIG. 3 is a cross-sectional view taken along A-A of FIG. 2;

FIG. 4 is a cross-sectional view taken along line B-B of FIG. 2;

FIG. 5 is a schematic structural diagram of a locking system of another embodiment of the present invention;

FIG. 6 is a cross-sectional view taken along the line C-C of FIG. 5;

FIG. 7 is a cross-sectional view taken along line D-D of FIG. 5;

fig. 8 is a schematic structural view of a locking system of yet another embodiment of the present invention.

Wherein:

1-a locking system;

10-a base; 11-a locking hole;

21-a first locking pin; 22-a second locking pin; 23-a third locking pin;

aa-a first angle; bb-a second angle; cc-third included angle; dd-fourth angle;

30-a drive section;

2-a tower; 3-a cabin; 4-a generator; 5-an impeller; 501-a hub; 502-a blade; 6-a fan foundation; x-ring direction; y-axis direction; z-radial direction.

In the drawings, like parts are provided with like reference numerals. The figures are not drawn to scale.

Detailed Description

Features and exemplary embodiments of various aspects of the present invention will be described in detail below. In the following detailed description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. It will be apparent, however, to one skilled in the art that the present invention may be practiced without some of these specific details. The following description of the embodiments is merely intended to provide a better understanding of the present invention by illustrating examples of the present invention. In the drawings and the following description, at least some well-known structures and techniques have not been shown in detail in order to avoid unnecessarily obscuring the present invention; also, the dimensions of some of the structures may be exaggerated for clarity. Furthermore, the described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

The directional terms appearing in the following description are directions as shown in the drawings and do not limit the locking system of the present invention and the specific structure of the wind turbine generator set. In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "mounted" and "connected" are to be interpreted broadly, e.g., as either a fixed connection, a removable connection, or an integral connection; can be directly connected or indirectly connected. The specific meaning of the above terms in the present invention can be understood as appropriate to those of ordinary skill in the art.

For a better understanding of the invention, a locking system and a wind park according to an embodiment of the invention are described in detail below with reference to fig. 1 to 8.

Referring to fig. 1, an embodiment of the present invention provides a wind turbine generator system, which includes a first component, a second component and a locking system 1, wherein the second component is rotatably connected to the first component, and the locking system 1 is used for locking relative positions of the first component and the second component.

In order to meet the requirement of converting wind energy into electric energy, the wind turbine generator set provided by the embodiment of the invention may specifically include a wind turbine foundation 6, a tower 2, a nacelle 3, a generator 4, an impeller 5, and a shaft system structure (not shown). The tower 2 is arranged on a wind turbine foundation 6, the nacelle 3 is arranged on the tower 2, and the generator 4 is arranged on the nacelle 3, which may be located inside the nacelle 3, but may also be located outside the nacelle 3 in some examples. The impeller 5 includes a hub 501 and a plurality of blades 502 connected to the hub 501, the hub 501 of the impeller 5 is connected to the rotor of the generator 4 through a moving shaft of a shafting structure, and a fixed shaft of the shafting structure can be connected to the stator of the generator 4 and the nacelle 3. When wind power acts on the blades 502, the blades 502 drive the whole impeller 5 to rotate relative to the nacelle 3, so that the moving shaft drives the rotor of the generator 4 to rotate relative to the stator, and power generation is realized.

One of the above mentioned first and second components may be the impeller 5 and the other the nacelle 3. Of course, in some examples, one of the first component and the second component is a rotor of the generator 4 and the other is a stator of the generator 4. Alternatively, one of the first member and the second member is a moving axis of the shafting structure and the other is a fixed axis of the shafting structure.

In order to better meet the locking requirement on the relative positions of the first component and the second component, the embodiment of the invention further provides a locking system 1, and the locking system 1 can be used for the wind generating set of the embodiment to lock and unlock the relative positions of the impeller 5 and the nacelle 3, the relative positions of a moving shaft and a fixed shaft of a shafting structure, or the relative positions of a rotor and a stator of the generator 4. Of course, the locking device can also be used for locking and unlocking requirements of two components which rotate relatively in other devices.

Referring to fig. 2 to 4 together, a locking system 1 according to an embodiment of the present invention includes a base 10 and a pin assembly. The base 10 has a plurality of locking holes 11, the plurality of locking holes 11 are tapered holes and are uniformly distributed in the circumferential direction X of the base 10 at intervals, and the base 10 can be provided to the first member. The pin assembly comprises a first locking pin 21, a second locking pin 22 and at least one third locking pin 23, each of which is in plugging engagement with any one of the locking holes 11. The pin assembly can be arranged on the second component and is arranged in the circumferential direction X, the first locking pin 21, the second locking pin 22 and the third locking pin 23 are distributed at intervals, the first locking pin 21 and the second locking pin 22 are adjacently arranged and form a first included angle aa with the second locking pin 22, a second included angle bb is formed between the first locking pin 21 and the adjacent third locking pin 23, a third included angle cc is formed between the second locking pin 22 and the adjacent third locking pin 23, wherein the second included angle bb is equal to the third included angle cc, and the absolute value of the difference between the second included angle bb and the first included angle aa is greater than zero.

Taking the impeller 5 of the wind generating set as an example, the rotation direction of the wind generating set is fixed when the wind generating set works through research, and the analysis of the locking load can find that the larger locking load of the wind generating set is the same direction except the working conditions which can be identified by hoisting of the single blade 502 and the like, the other loads in the opposite directions are very small, and basically, the requirement can be met by a single locking pin. Based on the above research, the locking system 1 according to the embodiment of the present invention may be used by disposing the base 10 on the hub 501 of the impeller 5 and disposing the pin assembly on the nacelle 3 opposite to the base 10. The working process is as follows:

when locking operation is performed by taking the locking load as an instantaneous needle direction, the first locking pin 21 is aligned with the locking hole 11, the first locking pin 21 is driven to extend into the corresponding locking hole 11, and the conical sections of the first locking pin 21 and the corresponding locking hole 11 of the base 10 are combined, so that the first locking pin 21 is in contact with the locking hole 11 on both sides of the base 10 in the circumferential direction X and is stressed, and the impeller 5 is completely limited in the circumferential direction. Then, the second locking pin 22 and the third locking pin 23 are controlled to be inserted into the corresponding locking holes 11, because the second included angle bb is equal to the third included angle cc and the absolute value of the difference between the second included angle bb and the first included angle aa is greater than zero, namely, the second included angle bb and the third included angle cc are deviated and the deviations are equal to each other, and the plurality of locking holes 11 are uniformly distributed on the circumferential direction X, after the second locking pin 22 and the third locking pin 23 are inserted into the corresponding through holes, the second locking pin 22 and the third locking pin 23 are contacted on the stressed side due to the deviation, namely, the force is applied on one side, and when all the locking pins are inserted, the impeller 5 can be well restrained.

As an alternative embodiment, the sum of the number of the first locking pins 21, the second locking pins 22 and the third locking pins 23 is n, and the number of the locking holes 11 is an integer multiple of n. It may be one time, i.e. the number of locking holes 11 is also n, but of course it may also be two, three or even more times, the higher the multiple, the wider the locking positions of the first and second parts relative to each other.

Taking n equal to 3 as an example, when the number of locking holes 11 is equal to n, then the first member and the second member can only be locked in one relative position. If the number of the locking holes 11 is twice n, that is, if the number of the locking holes 11 is six, the six locking holes 11 may be divided into two groups, each three of the locking holes are divided into one group, the deviation of the locking holes 11 between the two groups in the circumferential direction X is 60 °, the first locking pin 21, the second locking pin 22 and the third locking pin 23 may be respectively engaged with the two groups of locking holes 11, so as to lock the first member in two different positions relative to the second member, and so on, the higher the multiple is, the more the relative lockable positions are.

With continued reference to fig. 2 to 4, as an alternative embodiment, the sum of the numbers of the first locking pin 21, the second locking pin 22 and the third locking pin 23 is n, where n ≧ 3. The first angle aa has an angle value of (360 °/n) +2a, and the second angle bb and the third angle cc have an angle value of (360 °/n) -a, respectively, where a is a constant, which may be a positive number, and in some embodiments, may also be a negative number. Through the arrangement, the requirement on the relation between the first included angle aa and the second included angle bb as well as the third included angle cc can be better met, so that no matter locking is carried out in the clockwise direction or the anticlockwise direction, the first locking pin 21, the second locking pin 22 and the at least one third locking pin 23 can be ensured to play a locking role, and the requirement on multi-pin locking is met.

As an alternative embodiment, the number of the third locking pins 23 is more than two, the sum n of the numbers of the first locking pin 21, the second locking pin 22 and the third locking pin 23 is more than or equal to 4, a fourth included angle dd is formed between two adjacent third locking pins 23 in the circumferential direction X, and the value of the fourth included angle dd is 360 DEG/n. No matter the locking is carried out in the clockwise direction or the anticlockwise direction, the locking effect of the first locking pin 21, the second locking pin 22 and the third locking pins 23 can be guaranteed, the multi-pin locking requirement can be better met, and the locking safety and stability requirement can be guaranteed.

Illustratively, for example, when n is equal to 6 and the number of locking holes 11 is equal to n, the first included angle aa has an angle value of 60 ° +2a, the second included angle bb and the third included angle cc have an angle value of 60 ° + a, and the fourth included angle cc has an angle value of 60 °.

And taking a as a positive number, when the first component drives the base 10 to rotate clockwise, when locking operation is performed, firstly, the first locking pin 21 is aligned with the locking hole 11, and under the pushing of a power system, by combining the tapered sections of the first locking pin 21 and the locking hole 11, both sides of the first locking pin 21 in the annular direction X are in contact with the locking hole 11 to be stressed, and at the moment, the impeller 5 is completely limited in the circumferential direction, so that the form shown in fig. 3 is formed. The second locking pins 22 and the respective third locking pins 23 can be controlled to be inserted into the locking holes 11, and since the angle between the first locking pin 21 and the adjacent third locking pin 23 and the angle between the second locking pin 22 and the adjacent third locking pin 23 in the present invention are a degrees smaller than the angle between the corresponding adjacent locking holes 11 when locking, the adjacent third locking pin 23 will contact and receive force in the counterclockwise direction close to the first locking pin 21 side due to the deviation of a degrees. Similarly, the remaining third locking pins 23, also due to this deviation of a degrees, are all in contact on the force-receiving side. The second locking pin 22 is now in single-sided contact with the remaining third locking pins 23, as in the case of the third locking pin 23, which is shown in fig. 4. When all the locking pins are inserted, the base 10 is well restrained in the clockwise direction.

Referring to fig. 5 to 7, similarly, if the rotational load is in the counterclockwise direction, when the locking operation is performed, the second locking pin 22 is first aligned with the corresponding locking hole 11, and under the pushing of the power system, in combination with the tapered cross section of the second locking pin 22 and the corresponding locking hole 11, the second locking pin 22 contacts and is forced by both sides of the locking hole 11, and at this time, the impeller 5 is completely limited in the circumferential direction, so as to form the structural form shown in fig. 6. The first locking pin 21 and each third locking pin 23 can be controlled to be inserted into the locking hole 11, and since the angle between the second locking pin 22 and the adjacent third locking pin 23 and the angle between the first locking pin 21 and the adjacent third locking pin 23 in the present invention are a degrees smaller than the angle between the corresponding adjacent locking holes 11 when locking, the adjacent third locking pin 23 will be forced to contact close to the second locking pin 22 side in the clockwise direction due to the deviation of a degrees, forming the form shown in fig. 7. Similarly, the remaining third locking pins 23, also due to this deviation of a degrees, are all in contact on the force-receiving side. The first locking pin 21 is now in one-sided contact with the remaining third locking pins 23, which is also the same as the one-sided contact on the force-receiving side. When all the locking pins are inserted, the base 10 is well restrained in the counterclockwise direction.

Through the arrangement, each pin plays a role in the locking process, the phenomenon that each locking pin cannot be in splicing fit with the corresponding locking hole 11 due to processing and assembling errors can be avoided, and the locking requirement is met.

In some optional embodiments, the locking system 1 provided in each of the above embodiments may have an absolute value of a between 0.02 ° and 2 °, including both ends of 0.02 ° and 2 °. In some alternative embodiments, any value between 0.03 ° and 1 ° may be selected, and further about 0.05 ° may be selected. Through the arrangement, errors caused by machining and assembling can be reliably absorbed, and meanwhile, when one of the first locking pin 21 and the second locking pin 22 is subjected to bilateral stress on the ring direction X, the other of the rest first locking pin 21 and the second locking pin 22 and each third locking pin 23 can meet the requirement of unilateral stress in the stress direction, so that multi-pin locking is realized, and the safety is ensured.

As an alternative implementation, the locking system 1 provided by each of the above embodiments of the present invention may have a disk shape as a whole, and may have a circular disk-shaped structure, and the plurality of locking holes 11 may extend along the axial direction Y of the base 10 respectively.

With continued reference to fig. 2-7, in some alternative embodiments, the locking hole 11 may be a pyramid hole, and the cross section of the locking hole in the extending direction thereof may be a polygon. Accordingly, the first locking pin 21, the second locking pin 22, and the third locking pin 23 may be tapered pins having shapes matching the shapes of the locking holes 11, and each locking pin has a polygonal cross section in its own axial direction matching the shape of the locking hole 11. For example, when the cross section of the locking hole 11 in the self-extending direction is a quadrangle, the cross section of each locking pin in the self-extending direction may also be a quadrangle and can be inserted into the corresponding locking hole 11.

Of course, it is understood that the locking hole 11 is a pyramid hole, but not limited to the above, and in some embodiments, the locking hole 11 may be a conical hole, and the cross section of the conical hole in the extending direction of the conical hole may be circular. Accordingly, the cross section of each of the first locking pin 21, the second locking pin 22, and the third locking pin 23 in the axial direction thereof is circular, as long as the multi-pin locking requirement in different directions can be satisfied.

As an optional implementation manner, the locking system 1 provided in each of the above embodiments further includes a driving part 30, the first locking pin 21, the second locking pin 22, and the third locking pin 23 are respectively connected to the driving part 30, and the driving part 30 drives the first locking pin 21, the second locking pin 22, and the third locking pin 23 to be inserted into or separated from the oppositely disposed locking holes 11 according to a predetermined timing. The driving part 30 may include a hydraulic cylinder, and a hydraulic cylinder may be connected to each of the first locking pin 21, the second locking pin 22, and the third locking pin 23, and the corresponding locking pin is controlled by the hydraulic cylinder to move toward the locking hole 11 side corresponding to the base 10 to achieve locking, or controlled to move toward the locking hole 11 side corresponding to the base 10 to achieve unlocking.

In some optional embodiments, the first locking pin 21, the second locking pin 22 and the third locking pin 23 provided in the above embodiments may have different structures. Of course, in some embodiments, the three structures may be made the same, and the single-sided or double-sided locking requirement of each locking pin on the ring direction X is realized by using different plugging depths. By making the structures of the first locking pin 21, the second locking pin 22 and the third locking pin 23 the same, it is possible to mass-produce the respective locking pins of the locking system 1, to easily form, and to facilitate replacement.

It is understood that the above embodiments of the present invention are exemplified by the case that the locking hole 11 extends in the axial direction Y of the base 10, which is an alternative embodiment, but not limited to the above.

Referring to fig. 8, in some embodiments, the plurality of locking holes 11 of the base 10 may extend a predetermined distance along the radial direction Z of the base 10, so that, in operation, the first locking pin 21, the second locking pin 22 and the third locking pin 23 of the pin assembly may be spaced in the circumferential direction X and opposite to the corresponding locking holes 11 in the radial direction Z, which may also satisfy the locking requirement. The arrangement mode is suitable for locking a first component and a second component which are at least partially sleeved and rotatably connected with each other, such as locking and unlocking between a moving shaft and a fixed shaft of a shafting structure of a wind generating set, and further such as locking and unlocking between a rotor and a stator of the generator 4.

As an alternative embodiment, when the locking system 1 is used, for example, in a wind turbine generator system, the base 10 may be of an integral structure with the first component, and by the above arrangement, the locking hole 11 may be directly arranged on the first component, such as the hub 501 of the impeller 5, as required, without affecting the performance requirements of the first component, and the locking and locking requirements can also be satisfied.

It should be noted that the above and below mentioned double-side force of the present invention means that the corresponding locking pin contacts with the hole wall of the corresponding locking hole 11 on both sides of the ring direction X. The unilateral force means that the corresponding locking pin is in contact with the hole wall of the corresponding locking hole 11 at one side of the annular direction X.

The locking system 1 provided by the embodiment of the invention can be used for a wind generating set and bears huge loads during hoisting of the single blade 502, replacement of the single blade 502 and maintenance of the impeller 5 of the wind generating set, and the problems that the strength of one conventional locking pin cannot bear huge loads and the assembly interference of a plurality of locking pins is caused by insufficient precision are effectively solved. And no matter lock in clockwise or anticlockwise, all have a stop pin two side atress on hoop X, two at least stop pins unilateral atress in the direction of atress, the atress requirement after can be better satisfied to the multi-pin locking makes locking system 1 bear more evenly, can both play the effect of dispersion atress to wind generating set's motor structure or shafting structure, and the good reliability of locking effect.

Meanwhile, when the locking system 1 provided by the embodiment of the invention is used in a corresponding use environment, such as a wind generating set for locking the impeller 5, only the base 10 and the pin assembly need to be connected to two components to be locked at opposite positions, and the outer diameter of the impeller 5 or the rotor of the generator 4 is not increased, so that the unit cost is prevented from being greatly increased due to the adoption of a larger-size locking pin or a larger-size peripheral structure.

The wind generating set provided by the embodiment of the invention comprises the locking system 1 provided by each embodiment, so that the locking requirements of the relative positions of the first component and the second component which rotate relatively, such as the impeller 5 and the nacelle 3, can be met, multi-pin locking can be realized, and the wind generating set has higher safety performance.

While the invention has been described with reference to a preferred embodiment, various modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the invention. In particular, the technical features mentioned in the embodiments can be combined in any way as long as there is no structural conflict. It is intended that the invention not be limited to the particular embodiments disclosed, but that the invention will include all embodiments falling within the scope of the appended claims.

Claims (12)

1. A locking system (1) for locking the relative position of a first and a second component of a rotary connection, characterized in that the locking system (1) comprises:

a base (10) having a plurality of locking holes (11), wherein the plurality of locking holes (11) are respectively tapered holes and are uniformly distributed at intervals in a circumferential direction (X) of the base (10), and the base (10) can be arranged on the first component;

the pin assembly comprises a first locking pin (21), a second locking pin (22) and at least one third locking pin (23) which are respectively in plug fit with any one locking hole (11);

the pin assembly can be arranged on the second component and distributed at intervals in the annular direction (X), the first locking pin (21), the second locking pin (22) and the third locking pin (23), the first locking pin (21) and the second locking pin (22) are arranged adjacent to each other and form a first included angle (aa) with the second locking pin (22), the first locking pin (21) and the adjacent third locking pin (23) form a second included angle (bb), the second locking pin (22) and the adjacent third locking pin (23) form a third included angle (cc), wherein the second included angle (bb) is equal to the third included angle (cc) and the absolute value of the difference between the second included angle (bb) and the first included angle (aa) is greater than zero.

2. Locking system (1) according to claim 1, characterized in that the sum of the number of first locking pin (21), second locking pin (22) and third locking pin (23) is n, n ≧ 3, the angular value of the first angle (aa) is (360 °/n) +2a, the angular values of the second angle (bb) and third angle (cc) are (360 °/n) -a, respectively, where a is constant.

3. Locking system (1) according to claim 2, characterized in that the absolute value of a is greater than or equal to 0.02 and less than or equal to 2.

4. Locking system (1) according to claim 2, characterised in that said third locking pins (23) are more than two in number, said sum n being greater than or equal to 4, a fourth angle (dd) being formed between two adjacent third locking pins (23) in said annular direction (X), said fourth angle (dd) having a value of 360 °/n.

5. Locking system (1) according to any one of claims 1 to 4, characterized in that the sum of the number of first locking pins (21), second locking pins (22) and third locking pins (23) is n and the number of locking holes (11) is an integer multiple of n.

6. The locking system (1) according to any one of claims 1 to 4, wherein the locking system (1) further comprises a driving part (30), the first locking pin (21), the second locking pin (22) and the third locking pin (23) are respectively connected to the driving part (30), and the driving part (30) drives the first locking pin (21), the second locking pin (22) and the third locking pin (23) to be inserted into or separated from the oppositely disposed locking holes (11) according to a predetermined timing.

7. Locking system (1) according to any one of claims 1 to 4, characterized in that said base (10) is disk-shaped, a plurality of said locking holes (11) respectively extending in an axial direction (Y) of said base (10);

or, the base (10) is disc-shaped, and the plurality of locking holes (11) respectively extend along the radial direction (Z) of the base (10).

8. Locking system (1) according to any one of claims 1 to 4, characterized in that said locking hole (11) is a conical hole, said first locking pin (21), said second locking pin (22) and said third locking pin (23) each having a circular cross section in their own axial direction;

or, the locking hole (11) is a pyramid hole, and the cross section of each of the first locking pin (21), the second locking pin (22) and the third locking pin (23) in the axial direction is polygonal.

9. Locking system (1) according to any one of claims 1 to 4, characterized in that said first locking pin (21), second locking pin (22) and third locking pin (23) are all conical pins and are structurally identical.

10. A wind turbine generator set, comprising:

a first member;

a second member rotatably coupled to the first member;

locking system (1) according to any one of claims 1 to 9, wherein the base (10) is arranged at the first part, the pin assembly is arranged at the second part and facing the base (10), the first locking pin (21), the second locking pin (22) and the third locking pin (23) are spaced apart in a circumferential direction (X) of the base (10), the first locking pin (21) is arranged adjacent to the second locking pin (22) and forms the first angle (aa) with the second locking pin (22), the first locking pin (21) forms the second angle (bb) with the adjacent third locking pin (23), the second locking pin (22) forms the third angle (cc) with the adjacent third locking pin (23), the second angle (bb) is equal to the third angle (cc) and the difference between the second angle (bb) and the first angle (aa) is equal to the third angle (cc) Is greater than zero.

11. Wind park according to claim 10, wherein one of the first and second components is an impeller (5) and the other is a nacelle (3);

or one of the first and second components is a rotor of a generator (4) and the other is a stator of the generator (4);

or, one of the first component and the second component is a moving shaft of a shaft system structure, and the other is a fixed shaft of the shaft system structure.

12. Wind park according to claim 10, wherein the base (10) is of one-piece construction with the first component.

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