CN204099374U - Locking device, generator and wind power generating set - Google Patents

Abstract

The utility model provides a locking device, a generator and a wind power generating set. The locking device provided by the utility model comprises a locking pin, a cam is rotatably connected to the locking pin, a handle is connected to the cam, a spring is sleeved on the locking pin, the cam and the The spring is located on both sides of the partition, one end of the spring is against the partition, the other end of the spring is against the abutment connected to the locking pin, and the cam, the locking pin and the partition There are sockets on the parts, and a limit pin; when the cam is at the first angle, the limit pin is inserted into the locking pin and the cam socket; when the cam is at the first angle When two corners are turned, the limiting pin is inserted into the locking pin and the insertion hole of the partition. The locking device has the advantages of simple structure, easy operation and fast response speed, and at the same time, the use of the limit pin to cooperate with the socket can avoid accidents such as misoperation.

Description

Locking devices, generators and wind turbines

technical field

The utility model relates to a locking component, in particular to a locking device, a generator and a wind power generating set.

Background technique

In some occasions, sometimes it is necessary to lock the rotating parts so that they are still and no longer rotate, so as to facilitate subsequent operations. Especially in the field of wind power generation, in order to ensure the safety of equipment and personnel during the hoisting, commissioning and maintenance of wind turbines, it is necessary to lock the rotating parts of the wind turbine (such as the rotor or impeller of the generator) so that Can't turn. In the prior art, in order to realize the reliable locking of the wind power generator, generally after the shutdown, the lock pin of the locking mechanism on the stationary part (such as the stator) of the generator is pushed into the hole or groove on the rotating part (such as the rotor) inside, so that the rotating part can no longer rotate. In order to move the lock pin of the locking mechanism, there are generally two ways at present, one of which is to use hydraulic pressure to push a certain part to drive the lock pin to move, and the other is to use a screw as the lock pin, and rotate the screw to move the screw axially.

In the process of realizing the above technical solution, the inventor found that at least the following problems existed in the prior art:

The system structure adopted by the hydraulic scheme is complex, the cost is high, and the requirements for operators are also high. And whether it is a hydraulic scheme or a screw scheme, it often needs multiple attempts to succeed in the actual locking process.

According to the inventor's analysis, this is because the on-site environment (such as wind speed and wind direction) is uncertain when the rotor is locked, which has a great impact on the locking, and the locking time is often fleeting. The hydraulic scheme and the screw scheme have a long locking time and cannot respond quickly, so the probability of a successful locking is low.

Utility model content

The purpose of the utility model is to provide a locking device, a generator and a wind power generating set which are easy to operate, fast in response and reliable in locking.

In order to achieve the above object, the utility model provides a locking device, which includes a locking pin, a cam is rotatably connected to the locking pin, a handle is connected to the cam, and a locking pin is sleeved on the locking pin. The spring, the cam and the spring are located on both sides of the partition, one end of the spring is against the partition, and the other end of the spring is against the abutment connected to the locking pin. There are sockets on the above cams, locking pins and spacers, and limit pins are also included;

When the cam is at a first rotation angle, the limit pin is inserted into the locking pin and the insertion hole of the cam;

When the cam is at the second rotation angle, the limiting pin is inserted into the locking pin and the insertion hole of the partition.

In the locking device provided by the present utility model, an anti-rotation hole may be provided on the partition, and an anti-rotation part may be provided on the locking pin, and the anti-rotation part passes through the anti-rotation hole.

In the locking device provided by the utility model, the anti-rotation hole may be flat.

In the locking device provided by the utility model, a guide sleeve can be sleeved on the locking pin, the partition is connected to the guide sleeve, and the spring is located in the guide sleeve.

In the locking device provided by the utility model, the spacer can include a cover body and a boss, the insertion hole of the spacer is arranged on the boss, and the boss is located in the guide sleeve , the spring is against the boss part, the cover part is connected with the guide sleeve, and an insertion hole is provided on the guide sleeve, and the insertion hole on the guide sleeve is connected to the boss part. corresponding to the corresponding jack.

In the locking device provided by the present invention, the abutting piece may be a shoulder provided on the locking pin.

In the locking device provided by the present invention, a pin shaft hole may be provided on the cam and the locking pin, and a pin shaft is pierced through the pin shaft holes of the cam and the locking pin.

In the locking device provided by the utility model, the cam may include two clamping parts arranged in parallel, the insertion hole and the pin shaft hole on the cam are all arranged on the clamping part, and the pin of the locking pin A shaft hole is provided at an end portion thereof, and the end portion is located between the two clamping portions.

In the locking device provided by the present invention, the cam may have a first plane, a transitional curved surface and a second plane, and the distance between the pin shaft and the first plane is greater than the distance between the pin shaft and the second plane the distance between;

When the cam is at a first rotation angle, the first plane is in contact with the partition;

When the cam is at the second rotation angle, the second plane is in contact with the partition.

The utility model also provides a generator, which includes any of the above-mentioned locking devices, the partition of the locking device is fixed relative to the stator of the generator, and the locking pin of the locking device is arranged on the rotor of the generator. Has slots or holes.

In the generator provided by the utility model, an end guide can be sleeved on the end of the locking pin, and the end guide is fixed on the stator of the generator.

The utility model also provides a wind power generating set comprising any one of the above-mentioned locking devices.

The main beneficial effect of the above-mentioned locking device provided by the utility model is that the expansion and contraction of the locking pin can be controlled conveniently and quickly only by using the handle to rotate the cam. The socket can keep the locking pin in the locked and unlocked state stably, avoiding accidents such as misoperation.

The above-mentioned generator and wind power generating set provided by the utility model can take over the advantages of the above-mentioned locking device, and is simple in structure, easy to operate, fast in response speed and good in reliability.

Description of drawings

Fig. 1 is the perspective view of the locking device of the utility model embodiment;

Fig. 2 is a diagram of a usage state of the locking device of the embodiment of the present invention;

Fig. 3 is another usage state diagram of the locking device of the embodiment of the present invention;

Fig. 4 is a perspective view of a partition in an embodiment of the present invention;

Fig. 5 is the perspective view of the locking pin of the utility model embodiment;

Fig. 6 is a cross-sectional view of a generator equipped with a locking device according to an embodiment of the present invention;

7 is a perspective view of a cam and a handle of an embodiment of the present invention;

Fig. 8 is a perspective view of a generator installed with a locking device according to an embodiment of the present invention.

Explanation of reference numbers:

1-lock pin; 11-anti-rotation part; 12-shaft shoulder; 21-cam; 22-handle; 211-clamping part; 2111-first plane; 2112-transition surface; 2113-second plane; ;32-divider; 321-rotation stop hole; 322-cover body; 3221-screw hole; 323-boss; 33-butting piece; 34-guide sleeve; ; 51-pin shaft hole; 52-pin shaft; 61-stator; 62-rotor; 621-slot; 7-locking device; 8-end guide.

Detailed ways

The locking device, the generator and the wind power generating set of the embodiment of the utility model will be described in detail below with reference to the accompanying drawings.

As shown in Figure 1, the locking device of the utility model embodiment comprises a locking pin 1, a cam 21 is rotatably connected to the locking pin 1, a handle 22 is connected to the cam 21, and a locking pin 1 is sleeved on the locking pin 1. The spring 31, the cam 21 and the spring 31 are located on both sides of the partition 32, one end of the spring 31 is against the partition 32, the other end of the spring 31 is against the abutment 33 connected to the locking pin 1, and the cam 21, the locking Both the pin 1 and the spacer 32 are provided with an insertion hole 41, and also include a limit pin 42. Referring to FIG. 2, when the cam 21 is at the first rotation angle, the limit pin 42 is inserted into the insertion hole of the locking pin 1 and the cam 21 , see FIG. 3 , when the cam 21 is at the second angle, the limit pin 42 is inserted into the insertion hole of the locking pin 1 and the partition 32 .

Referring to Fig. 1, when the cam 21 of the present embodiment is rotating, when the near point on the outer edge of the cam 21 (the point on the outer edge of the cam 21 that is closer to the center of rotation of the cam 21) approaches the partition 32, the spring 31 will The active force of abutment 33 can make locking pin 1 stretch out, and when the far point on the outer edge of cam 21 (the point on the outer edge of cam 21 that is farther away from the rotation center of cam 21) is close to partition 32, the partition will 32 The reaction force on the cam 21 makes the cam 21 drive the locking pin 1 back and compresses the spring 31, so it is only necessary to use the handle 22 to rotate the cam 21 to conveniently and quickly control the expansion and contraction of the locking pin 1, so that the locking device provided in this embodiment It has the advantages of simple structure, easy operation, and fast response speed. At the same time, when the locking pin 1 is in the extended state and the retracted state, it can respectively correspond to the locked state and the unlocked state. The locking device of this embodiment uses the limit pin 42 Cooperating with the socket 41 can conveniently keep the locking pin 1 stably in the locked state and the unlocked state respectively, avoiding accidents such as misoperation.

Specifically, when using the locking device of this embodiment, the spacer 32 can be fixedly connected to one of the two relatively rotating parts (or use a certain structural part on the part as a spacer), and on the other part A groove or a hole corresponding to the locking pin 1 is provided to facilitate locking and unlocking of the locking device of this embodiment. Referring to Fig. 2 and Fig. 3, when operating the locking device of this embodiment, if it is to be locked, the stop pin 42 can be pulled out and the cam 21 can be rotated so that it is at the second corner, and the stop pin 42 can be inserted into the lock pin 1 and In the socket of the partition 32, if you want to unlock, you can pull out the limit pin 42 and rotate the cam 21 to make it at the first corner, insert the limit pin 42 into the socket of the locking pin 1 and the cam 21, and so on. back and forth.

Preferably, as shown in FIG. 4 and FIG. 5 , an anti-rotation hole 321 may be provided on the partition 32 , and an anti-rotation portion 11 may be provided on the locking pin 1 , and the anti-rotation portion 11 passes through the anti-rotation hole 321 In this way, the locking pin 1 can be prevented from rotating, and the receptacle 41 on the partition 32 can be aligned with the receptacle 41 on the locking pin 1 during operation, so that the limit pin 42 can be inserted easily. Specifically, the cross section of the anti-rotation hole 321 may be non-circular. Further preferably, the anti-rotation hole 321 may be flat, for example, the anti-rotation hole 321 may be an oblate hole as shown in FIG. 4 .

As shown in Figure 6, it is a sectional view of a generator equipped with a locking device according to an embodiment of the present invention. Preferably, a guide sleeve 34 can be sleeved on the locking pin 1, and the spacer 32 is connected to the guide sleeve 34, and the spring 31 is located in the guide sleeve 34, so that the guide sleeve 34 can play a role in guiding the locking pin 1, and by installing the guide sleeve 34 on the stator 91 of the generator, the separator 32 can be positioned relative to the generator by means of the guide sleeve 34 The stator 61 is fixed, and the insertion hole 41 on the partition 32 can be conveniently located outside the stator 61 during installation, so as to facilitate the insertion of the limit pin 42 in the locked state.

As shown in FIGS. 4 and 6 , further preferably, the spacer 32 may include a cover portion 322 and a boss portion 323, the insertion hole 41 of the spacer 32 is arranged on the boss portion 323, and the boss portion 323 is located on the guide sleeve. 34, the spring 31 is offset against the boss portion 323, the cover body portion 322 is connected to the guide sleeve 34, and the guide sleeve 34 is provided with a jack 41, and the jack 41 on the guide sleeve 34 is connected to the jack on the boss portion 323. 41, so that the spring 31 can be blocked in the guide sleeve 34 by using the boss portion 323, which is more convenient for the assembly of the locking device of this embodiment. Specifically, screw holes 3221 may be provided on the end of the guide sleeve 34 and the cover body 322 , and the cover body 322 and the end of the guide sleeve 34 may be connected by screws.

Referring to FIG. 1, specifically, the abutment 33 can be various abutments that can stop the free extension of the spring 31, such as a nut or a block welded on the locking pin 1, etc., as shown in FIG. 5, preferably , the abutting piece can be the shoulder 12 arranged on the locking pin 1, and the shoulder 12 can be processed when the locking pin 1 is processed, the structure is simple, and there is no need to assemble a special abutting piece.

Specifically, the cam 21 can be connected to the locking pin 1 through pin shafts and bearings to achieve rotation. Preferably, as shown in FIGS. Hole 51, the cam 21 and the pin shaft hole 51 of the locking pin 1 are jointly pierced with a pin shaft 52, and this connection structure is simpler. Further preferably, the cam 21 may include two parallel clamping portions 211, the insertion hole 41 and the pin hole 51 on the cam 21 may be set on the clamping portion 211, and the pin hole 51 of the locking pin 1 is set on the Its end, the end is located between the two clamping parts 211, this connection structure is reliable in connection and stable in rotation.

The shape of the cam 21 can be designed according to the length that the locking pin 1 needs to expand and contract. As shown in FIGS. The distance between the first plane 2111 is greater than the distance between the pin shaft 52 and the second plane 2113. When the cam 21 is at the first rotation angle, the first plane 2111 is in contact with the partition 32. When the cam 21 is at the second rotation angle , the second plane 2113 is attached to the separator 32 . Here, when the cam 21 is in the two corner states, a plane is used to fit the separator 32 respectively, which can make the operation feel better, and it is convenient to sense the state of the cam 21 and stop rotating the cam 21 during operation. Specifically, the first plane 2111 , the transitional curved surface 2112 and the second plane 2113 may be provided on the aforementioned clamping portion 211 . Preferably, the first plane 2111 may be parallel to the second plane, so that the included angle between the first corner and the second corner is 180°.

Specifically, the locking device of the embodiment of the utility model can be used to lock the generator, as shown in Figure 6 and Figure 8, the generator of the embodiment of the utility model, which includes the locking device 7 of the above embodiment, the locking device 7 The separator 32 is fixed relative to the stator 61 of the generator, and the rotor 62 of the generator is provided with a groove 621 or a hole corresponding to the locking pin 1 of the locking device 7 .

As shown in Figure 6, further, an end guide 8 can be sleeved on the end of the locking pin 1, and the end guide 8 is fixed on the stator 61 of the generator, and the end guide 8 can support the locking pin 1. The locking end provides auxiliary guidance, and at the same time, the radial blocking of the locking pin 1 by the end guide 8 can prevent the locking pin 1 from bearing a large bending moment when locking.

In addition, in order to lock the rotor of the generator, the partition 32 can also be fixed relative to the nacelle, the base and other components, and the locking device in the embodiment of the utility model can be used to lock the rotor of the generator, and can also be used to To lock other rotating parts (such as impellers) on the wind power generating set, for example, the partition 32 can be fixed relative to the nacelle base on the wind generating set, and a slot or hole corresponding to the locking pin 1 is opened on the impeller, According to the principle described above, it can be seen that the locking device provided by the embodiment of the utility model is also suitable for direct-drive wind turbines, semi-direct-drive wind turbines and doubly-fed wind turbines and other types of wind turbines, so the utility model also requires Protecting a wind turbine comprising the locking device of the above-described embodiments.

The above is only a specific embodiment of the present utility model, but the scope of protection of the present utility model is not limited thereto. Anyone familiar with the technical field can easily think of changes or changes within the technical scope disclosed by the utility model Replacement should be covered within the protection scope of the present utility model. Therefore, the protection scope of the present utility model should be based on the protection scope of the claims.

Claims (12)

1. A locking device, characterized in that it comprises a locking pin, a cam is rotatably connected to the locking pin, a handle is connected to the cam, a spring is sleeved on the locking pin, and the cam And the spring is located on both sides of the partition, one end of the spring is against the partition, the other end of the spring is against the abutment connected to the locking pin, and the cam, the locking pin Jacks are provided on both the partition and the spacer, and limit pins are also included; When the cam is at the first rotation angle, the limit pin is inserted into the socket of the locking pin and the cam; When the cam is at the second rotation angle, the limiting pin is inserted into the locking pin and the insertion hole of the partition. the 2. The locking device according to claim 1, characterized in that, an anti-rotation hole is provided on the partition, an anti-rotation portion is provided on the locking pin, and the anti-rotation portion passes through the in the stop hole. the 3. The locking device according to claim 2, wherein the anti-rotation hole is flat. the 4. The locking device according to claim 1, wherein a guide sleeve is sleeved on the locking pin, the partition is connected to the guide sleeve, and the spring is located in the guide sleeve. the 5. The locking device according to claim 4, wherein the spacer comprises a cover portion and a boss portion, the insertion hole of the spacer is arranged on the boss portion, and the boss portion Located in the guide sleeve, the spring is against the boss portion, the cover body is connected to the guide sleeve, and an insertion hole is provided on the guide sleeve, and the insertion hole on the guide sleeve is connected to the guide sleeve. The socket on the boss part corresponds. the 6. The locking device according to claim 1 or 4, wherein the abutting member is a shoulder provided on the locking pin. the 7 . The locking device according to claim 1 , wherein pin holes are provided on the cam and the locking pin, and a pin shaft is passed through the pin holes of the cam and the locking pin. 8 . the 8. The locking device according to claim 7, characterized in that, the cam comprises two clamping parts arranged in parallel, the insertion hole and the pin shaft hole on the cam are both arranged on the clamping parts, The pin shaft hole of the locking pin is arranged at its end, and the end is located between the two clamping parts. the 9. The locking device according to claim 7, wherein the cam has a first plane, a transitional curved surface and a second plane, and the distance between the pin shaft and the first plane is greater than that of the pin shaft distance from said second plane; When the cam is at a first corner, the first plane is in contact with the partition; When the cam is at the second rotation angle, the second plane is in contact with the partition. the 10. A generator, characterized in that it comprises the locking device according to any one of claims 1 to 9, the partition of the locking device is fixed relative to the stator of the generator, corresponding to the rotor of the generator The locking pin of the locking device is provided with a groove or a hole. the 11 . The generator according to claim 10 , wherein an end guide is sleeved on the end of the locking pin, and the end guide is fixed on the stator of the generator. the 12. A wind power generator comprising the locking device according to any one of claims 1 to 9. the