Yaw brake and wind driven generator

Abstract

The invention provides a yaw brake and a wind driven generator, the yaw brake comprises a caliper body, a brake pad, a rotating shaft at least partially arranged in the caliper body, a transmission assembly and a push rod, the caliper body is provided with a mounting groove for containing the brake pad, and the brake pad is arranged in the mounting groove. The mounting groove is provided with an outlet in the first direction perpendicular to the clamping direction of the brake pad, and the rotating shaft can rotate to drive the push rod to move in the first direction through the transmission assembly, so that the push rod pushes the brake pad to be separated from the mounting groove towards the outlet in the first direction. According to the technical scheme, the mounting groove in the caliper body can allow the brake pad to enter and exit in the direction perpendicular to the clamping direction, the brake pad can be pushed to slide out through the push rod, the replacement operation of the brake pad is simplified, the workload is reduced, and the efficiency is improved.

Description

Technical Field

[0001] The present disclosure relates to the technical field of wind power generation, and in particular to a yaw brake and a wind power generator. Background Art

[0002] In the wind power industry, yaw brakes mainly use disc brakes, which are composed of a brake ring connected to the tower and a brake caliper with an edge clamp. The brake caliper is connected to the wind turbine frame, and the brake disc is connected to the tower. The brake caliper is always under pressure. When yaw, the pressure is 25bar to provide yaw damping. When braking, the pressure is 150bar. The high-pressure brake oil pushes the cylinder piston to move, and the friction material contacts the brake ring, clamping the brake ring, thereby producing a braking effect.

[0003] The brake caliper piston pushes the brake pad and clamps the brake disc to achieve braking. As the usage time increases, the brake pad gradually wears out and needs to be replaced. During the replacement process, the brake caliper needs to be removed and then the brake pad is taken out. The brake caliper is about 1.8 meters high from the platform and weighs 80kg. During the removal process, three people are required to work together. Two people hold the brake caliper, and one person uses a hydraulic wrench to loosen the brake caliper fixing bolts, slowly removes the brake caliper, and then uses tools to pry the brake pad out of the hydraulic caliper body. During the construction process, the space environment is limited, the actual operation is extremely inconvenient, and there are safety risks. Summary of the invention

[0004] A technical problem to be solved by the present disclosure is to simplify the replacement operation of the brake pads of the yaw brake.

[0005] In order to solve the above technical problems, the present scheme provides a yaw brake, which includes a caliper body, a brake pad, a rotating shaft at least partially arranged in the caliper body, a transmission assembly and a push rod, the caliper body is provided with a mounting groove for accommodating the brake pad, the mounting groove has an outlet along a first direction perpendicular to the clamping direction of the brake pad, the rotating shaft can rotate to drive the push rod to move along the first direction through the transmission assembly, so that the push rod pushes the brake pad to disengage from the mounting groove along the first direction toward the outlet.

[0006] In some embodiments, it further includes a baffle located outside the brake pad along the first direction, and the baffle is detachably disposed on the caliper body.

[0007] In some embodiments, the pliers body includes two blocks extending along the first direction, the two blocks are spaced apart along a second direction perpendicular to the clamping direction and the first direction to define the mounting groove, and the two blocks are respectively provided with through holes for accommodating the baffle to pass through.

[0008] In some embodiments, the push rod is at least partially located in the caliper body and located on the inner side of the brake pad along the first direction.

[0009] In some embodiments, the transmission assembly includes a screw mechanism, and the rotating shaft drives the push rod to move through the screw mechanism.

[0010] In some embodiments, the transmission assembly includes a first bevel gear coaxially arranged on the rotating shaft, the screw mechanism includes a screw extending along the first direction and a nut threaded on the screw, the screw is provided with a second bevel gear meshing with the first bevel gear, and the nut is connected to the push rod.

[0011] In some embodiments, the transmission assembly includes a pressure cap, the end face of the push rod facing the lead screw is provided with a blind hole, the nut is accommodated in the blind hole, and the pressure cap is provided on the end face of the push rod and presses the nut.

[0012] In some embodiments, the transmission assembly includes a support plate fixed on the caliper body and accommodating the lead screw to pass through, and a pressure plate pressed against the support plate, and a flange clamped between the support plate and the pressure plate is provided on the outer periphery of the lead screw.

[0013] In some embodiments, a hydraulic cylinder for driving the brake pad along the clamping direction is disposed in the caliper body.

[0014] On the other hand, the present solution provides a wind turbine, which includes the yaw brake described in the above solution.

[0015] Through the above technical solution, the mounting groove on the caliper body allows the brake pad to move in and out in a direction perpendicular to the clamping direction, and the brake pad can be pushed out by the push rod, which simplifies the replacement operation of the brake pad, reduces workload and improves efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present disclosure or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present disclosure. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0017] Figure 1 is an exploded view of a yaw brake disclosed in an embodiment of the present disclosure;

[0018] Figure 2 is a cross-sectional view of a yaw brake disclosed in an embodiment of the present disclosure, wherein the brake pad is installed in place;

[0019] Figure 3 yes Figure 2 A magnified view of part I;

[0020] Figure 4 is a cross-sectional view of a yaw brake disclosed in an embodiment of the present disclosure, wherein the brake pad is pushed outward;

[0021] Figure 5 yes Figure 4 Enlarged view of part II.

[0022] Description of reference numerals:

[0023] 1. Outer cover; 2. First bevel gear; 3. Second bevel gear; 4. Pressure plate; 5. Support plate; 6. Pressure cover; 7. Nut; 8. Lead screw; 9. Push rod; 10. Caliper body; 11. Rotating shaft; 12-Baffle; 13. Brake pad; 14. Block; 15. Mounting groove. DETAILED DESCRIPTION

[0024] The following is a further detailed description of the embodiments of the present disclosure in conjunction with the accompanying drawings and examples. The detailed description of the following embodiments and the accompanying drawings are used to exemplarily illustrate the principles of the present disclosure, but cannot be used to limit the scope of the present disclosure. The present disclosure can be implemented in many different forms and is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

[0025] The present disclosure provides these embodiments to make the present disclosure thorough and complete, and to fully express the scope of the present disclosure to those skilled in the art. It should be noted that unless otherwise specifically stated, the relative arrangement of the parts and steps, the composition of the materials, the numerical expressions and the numerical values ​​set forth in these embodiments should be interpreted as being merely exemplary, and not as limiting.

[0026] It should be noted that, in the description of the present disclosure, unless otherwise specified, the meaning of "multiple" is greater than or equal to two; the terms "upper", "lower", "left", "right", "inner", "outer", etc., indicating the orientation or positional relationship, are only for the convenience of describing the present disclosure and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present disclosure. When the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0027] In addition, the words "first", "second" and similar words used in the present disclosure do not indicate any order, quantity or importance, but are only used to distinguish different parts. "Vertical" does not mean vertical in the strict sense, but is within the tolerance range. "Parallel" does not mean parallel in the strict sense, but is within the tolerance range. "Include" or "comprising" and similar words mean that the elements before the word include the elements listed after the word, and do not exclude the possibility of including other elements.

[0028] It should also be noted that in the description of the present disclosure, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present disclosure can be understood according to the specific circumstances. When a specific device is described as being located between a first device and a second device, there may or may not be an intermediate device between the specific device and the first device or the second device.

[0029] All terms used in the present disclosure have the same meanings as those understood by those of ordinary skill in the art to which the present disclosure belongs, unless otherwise specifically defined. It should also be understood that terms defined in general dictionaries, for example, should be interpreted as having meanings consistent with their meanings in the context of the relevant technology, and should not be interpreted in an idealized or extremely formal sense, unless explicitly defined as such herein.

[0030] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered part of the specification.

[0031] refer to Figure 1-Figure 5 As shown, the present scheme provides a yaw brake, which includes a caliper body 10, a brake pad 13, a rotating shaft 11 at least partially arranged in the caliper body 10, a transmission assembly and a push rod 9, the caliper body 10 is provided with a mounting groove 15 for accommodating the brake pad 13, the mounting groove 15 has an outlet along a first direction perpendicular to the clamping direction of the brake pad 13, the rotating shaft 11 can rotate to drive the push rod 9 to move along the first direction through the transmission assembly, so that the push rod 9 pushes the brake pad 13 toward the outlet along the first direction to disengage from the mounting groove 15.

[0032] refer to Figure 1 As shown, the caliper body 10 is the main body of the yaw brake, and a brake pad 13 can be arranged on it.

[0033] The clamping direction refers to the direction in which the brake pad 13 moves toward the brake disc, and is also a direction perpendicular to the braking surface of the brake pad 13 .

[0034] The caliper body 10 is provided with a mounting groove 15 having an outlet along a first direction perpendicular to the clamping direction. The brake pad 13 can be inserted into the mounting groove 15 from the outlet of the mounting groove 15 along the first direction and can leave the mounting groove 15 from the outlet.

[0035] The outer side of the brake pad 13 is located at the exit of the mounting groove 15, the push rod 9 is located on the inner side of the brake pad 13, and the rotating shaft 11 is at least partially located on the caliper body 10. The rotating shaft 11 can drive the push rod 9 to move toward the brake pad 13 through the transmission assembly to push the brake pad 13 toward the exit direction, so that the brake pad 13 is disengaged from the mounting groove 15, thereby realizing the removal of the brake pad 13.

[0036] Regarding the rotating shaft 11, it can be driven by a driving device arranged in the pliers body 10, for example, a motor is arranged therein to drive the rotating shaft 11, or it can be driven by an external device. The rotating shaft 11 extends to the outside of the pliers body 10, and the rotating shaft 11 can be driven to rotate by an ordinary wrench or an electric wrench. The part of the rotating shaft 11 located outside the pliers body 10 can be formed into a quadrilateral or hexagonal cross-section to facilitate cooperation with the wrench.

[0037] It can be seen that, since the brake pad 13 can be directly taken out from the mounting groove 15 , it is no longer necessary to remove the caliper body 10 from the fan device, thereby simplifying the replacement operation of the brake pad 13 .

[0038] In this solution, the mounting groove on the caliper body allows the brake pad to move in and out in a direction perpendicular to the clamping direction, and the brake pad can be pushed out by the push rod, which simplifies the replacement operation of the brake pad, reduces the workload and improves efficiency.

[0039] In addition, in some embodiments, the yaw brake further includes a baffle 12 located outside the brake pad 13 along the first direction, and the baffle 12 is detachably arranged on the caliper body 10. The baffle 12 is arranged at the exit of the mounting groove 15, and can prevent the brake pad 13 from being separated from the exit of the mounting groove 15. When installing the brake pad 13, the baffle 12 is not arranged on the caliper body 10, and the brake pad 13 is inserted into the mounting groove 15 from the exit along the first direction, and then the baffle 12 is arranged on the caliper body 10 to prevent the brake pad 13 from being separated, refer to Figure 2 and Figure 3 When removing the brake pad 13, remove the baffle 12 from the caliper body 10, rotate the shaft 11 so that the push rod 9 pushes the brake pad 13 outward until the brake pad 13 extends out of the caliper body 10 long enough to facilitate the staff to remove the brake pad 13, refer to Figure 4 and Figure 5 shown.

[0040] In addition, in some embodiments, the caliper body 10 includes two blocks 14 extending along the first direction, the two blocks 14 are spaced apart along a second direction perpendicular to the clamping direction and the first direction to define the mounting groove 15, and the two blocks 14 are respectively provided with through holes for accommodating the baffle 12 to pass through. The block 14 is generally formed in a strip shape, extending along the first direction, and the two blocks 14 are spaced apart from each other in the second direction to form the mounting groove 15, and a through hole is formed at one end of the block 14 located at the outlet of the mounting groove 15, and the two ends of the baffle 12 can be located in the two through holes to limit the brake pad 13 from moving outward, and when the brake pad 13 needs to be removed, the baffle 12 can be moved along the second direction to be pulled out from the through hole, thereby releasing the restriction of the baffle 12 on the brake pad 13.

[0041] In some embodiments, the push rod 9 is at least partially located in the caliper body 10 and located on the inner side of the brake pad 13 along the first direction. In the first direction, the inner side of the brake pad 13 is a part of the caliper body 10, and the push rod 9 is arranged in the caliper body 10 and located on the inner side of the brake pad 13. Under the action of the rotating shaft 11 and the transmission assembly, the push rod moves toward the brake pad 13 to move the brake pad 13 outward.

[0042] In some embodiments, the transmission assembly includes a screw mechanism, and the rotating shaft 11 drives the push rod 9 to move through the screw mechanism. The screw mechanism can convert the rotation of the rotating shaft 11 into the linear movement of the push rod 9 to drive the brake pad 13 to move. It should be noted that the rotating shaft 11 can drive the push rod 9 to move in a bidirectional linear manner. Before reinstalling the brake pad 13, the push rod 9 can be driven to move in the reverse direction so that the push rod 9 returns from the installation groove 15 to avoid affecting the installation of the brake pad 13 in the installation groove 15.

[0043] In some embodiments, the transmission assembly includes a first bevel gear 2 coaxially arranged on the rotating shaft 11, the screw mechanism includes a screw 8 extending along the first direction and a nut 7 screwed to the screw 8, the screw 8 is provided with a second bevel gear 3 meshed with the first bevel gear 2, and the nut 7 is connected to the push rod 9. The extending directions of the rotating shaft 11 and the screw 8 are different, so it is necessary to make the rotating shaft 11 transmission-connected to the screw 8 through the cooperation of two bevel gears. When the screw 8 rotates, the nut 7 can be driven to move in a straight line, thereby driving the push rod to move in a straight line. The rotating shaft 11 extends in the second direction, which forms a right angle with the extending direction of the screw 8.

[0044] In addition, the transmission assembly includes a gland 6, and the end surface of the push rod 9 facing the lead screw 8 is provided with a blind hole, and the nut 7 is accommodated in the blind hole. The gland 6 is arranged on the end surface of the push rod 9 and presses the nut 7. One end of the push rod 9 faces the brake pad 13, and the other end faces the lead screw 8. A blind hole is arranged on the end surface of the lead screw 8, and the nut 7 is arranged therein. The push rod 9 cannot rotate, and the nut 7 is also restricted from rotating. The gland 6 is connected to the end surface of the push rod 9 to press the nut 7 onto the push rod 9. The gland 6 can be connected to the push rod 9 by bolts.

[0045] In some embodiments, the transmission assembly includes a support plate 5 fixed to the caliper body 10 and accommodating the lead screw 8 passing therethrough, and a pressing plate 4 pressed against the support plate 5, and a flange clamped between the support plate 5 and the pressing plate 4 is provided on the outer periphery of the lead screw 8. The caliper body 10 is provided with a mounting hole for accommodating the push rod 9 and the lead screw 8, the support plate 5 is provided in the mounting hole, and the pressing plate 4 is connected to the support plate 5 to clamp the flange on the outer periphery of the lead screw 8, so that the lead screw 8 can be kept relatively rotatable but not axially movable.

[0046] refer to Figure 2 and Figure 4 As shown, the mounting hole is roughly a three-section structure, the inner diameters of the first section, the second section, and the third section increase in sequence, the push rod 9 includes a first portion with a smaller outer diameter and a second portion with a larger outer diameter, the first portion is located in the first section, the second portion is located in the second section, the step surfaces of the first section and the second section can stop the step surfaces of the first section and the second section, the support plate 5 can be arranged on the step surface between the second section and the third section by bolts, and the pressure plate 4 is installed on the support plate 5 by bolts. The mounting hole can be sealed by the outer cover 1.

[0047] Two push rods 9 and corresponding transmission components may be provided in the caliper body 10 , and the two push rods 9 may be driven by a single rotating shaft 11 .

[0048] In some embodiments, a hydraulic cylinder for driving the brake pad 13 along the clamping direction is provided in the caliper body 10. The hydraulic cylinder can drive the brake pad 13 to move toward the brake disc to achieve braking of the brake disc.

[0049] In addition, the present invention further provides a wind turbine, which includes the yaw brake described in the above embodiment. The wind turbine may include a tower and a head, the yaw brake is arranged on the tower, the head is rotatably arranged on the tower, a brake disc is arranged on the head, and the brake disc and the yaw brake cooperate with each other.

[0050] So far, various embodiments of the present disclosure have been described in detail. In order to avoid obscuring the concept of the present disclosure, some details known in the art are not described. Based on the above description, those skilled in the art can fully understand how to implement the technical solution disclosed here.

[0051] Although some specific embodiments of the present disclosure have been described in detail by way of examples, it should be understood by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the present disclosure. It should be understood by those skilled in the art that the above embodiments may be modified or some technical features may be replaced by equivalents without departing from the scope and spirit of the present disclosure. In particular, the various technical features mentioned in the various embodiments may be combined in any manner as long as there is no structural conflict.

Claims

1. A yaw brake, characterized in that: The invention comprises a caliper body (10), a brake pad (13), a rotating shaft (11) at least partially arranged in the caliper body (10), a transmission assembly and a push rod (9); the caliper body (10) is provided with a mounting groove (15) for accommodating the brake pad (13); the mounting groove (15) has an outlet along a first direction perpendicular to the clamping direction of the brake pad (13); the rotating shaft (11) can rotate to drive the push rod (9) to move along the first direction through the transmission assembly, so that the push rod (9) pushes the brake pad (13) toward the outlet along the first direction to disengage from the mounting groove (15).

2. The yaw brake according to claim 1, characterized in that: It also includes a baffle (12) located outside the brake pad (13) along the first direction, and the baffle (12) is detachably arranged on the caliper body (10).

3. The yaw brake according to claim 2, characterized in that: The pliers body (10) comprises two blocks (14) extending along the first direction, the two blocks (14) are spaced apart along a second direction perpendicular to the clamping direction and the first direction to define the mounting groove (15), and the two blocks (14) are respectively provided with through holes for accommodating the baffle (12) to pass through.

4. The yaw brake according to claim 1, characterized in that: The push rod (9) is at least partially located in the caliper body (10) and is located on the inner side of the brake pad (13) along a first direction.

5. The yaw brake according to claim 1, characterized in that: The transmission assembly comprises a screw mechanism, and the rotating shaft (11) drives the push rod (9) to move via the screw mechanism.

6. The yaw brake according to claim 5, characterized in that: The transmission assembly comprises a first bevel gear (2) coaxially arranged on the rotating shaft (11); the screw mechanism comprises a screw (8) extending along the first direction and a nut (7) screwed to the screw (8); a second bevel gear (3) meshing with the first bevel gear (2) is arranged on the screw (8); and the nut (7) is connected to the push rod (9).

7. The yaw brake according to claim 6, characterized in that: The transmission assembly comprises a pressure cover (6), the end face of the push rod (9) facing the lead screw (8) is provided with a blind hole, the nut (7) is accommodated in the blind hole, and the pressure cover (6) is arranged on the end face of the push rod (9) and presses the nut (7).

8. The yaw brake according to claim 6, characterized in that: The transmission assembly comprises a support plate (5) fixed on the caliper body (10) and accommodating the lead screw (8) passing therethrough, and a pressure plate (4) pressed against the support plate (5), and a flange clamped between the support plate (5) and the pressure plate (4) is provided on the outer periphery of the lead screw (8).

9. The yaw brake according to claim 1, characterized in that: The caliper body (10) is provided with a hydraulic cylinder for driving the brake pad (13) along the clamping direction.

10. A wind turbine, characterized in that: Comprising a yaw brake according to any one of claims 1-9.

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