Online repairing device for fan brake disc

Abstract

The utility model provides an on-line repairing device for a fan brake disc, and belongs to the technical field of wind power generation equipment. The device comprises an on-line repairing device, an auxiliary braking device and a fan brake disc, the fan brake disc is horizontally arranged and is of an annular structure, the on-line repairing device is slidably arranged on the fan brake disc, and the on-line repairing device comprises a feeding mechanism, a cutterhead mechanism and a mixing and smearing mechanism. The feeding mechanism is configured to control the cutterhead mechanism and the mixed smearing mechanism to move, the cutterhead mechanism and the mixed smearing mechanism are configured to repair the fan brake disc, the auxiliary braking device comprises two jaws, and the fan brake disc is clamped between the two jaws. By the adoption of the on-line repairing device for the fan brake disc, the problems that in the prior art, the construction period is long, the cost is high, and the loss of the generating capacity of a fan is large can be solved.

Description

Technical Field

[0001] The utility model relates to the technical field of wind power generation equipment, in particular to an online repair device for a wind power generator brake disc. Background Art

[0002] With the development of the global wind power industry, the wind power operation and maintenance industry has also developed rapidly. As an important component of the wind turbine, the yaw system can ensure that the impeller of the wind turbine is always in a positive windward state, receiving the maximum wind force, making the wind power utilization efficiency the highest, thereby maximizing the use of wind energy and greatly improving the power generation efficiency. It is necessary to ensure its normal operation through operation and maintenance. In the prior art, there are few fault analysis and diagnosis monitoring systems for the yaw system of the wind turbine. When the yaw system fails, the brake disc of the wind turbine has often been severely worn.

[0003] In the existing related technologies, the fan brake disc is usually repaired by disassembling the fan brake disc after shutting down the fan, and then installing it back into the fan equipment after repairing the fan brake disc.

[0004] The wind turbine brake disc repair device in the existing related technology has a long construction period, high cost, and a large loss of wind turbine power generation. Utility Model Content

[0005] The embodiment of the utility model provides an online repair device for a wind turbine brake disc, which can solve the problems of long construction period, high cost and large power generation loss of the wind turbine in the prior art. The technical solution is as follows:

[0006] A fan brake disc online repair device, characterized in that it comprises: an online repair device (1) and a fan brake disc,

[0007] The fan brake disc is horizontally arranged, and the fan brake disc is a ring structure. The online repair device can be slidably arranged on the fan brake disc. The online repair device includes a knife disc mechanism and a mixing coating mechanism. The knife disc mechanism is used to grind the fan brake disc, and the mixing coating mechanism is used to apply a metal repair agent to the fan brake disc.

[0008] Optionally, the wire repair device includes a feeding mechanism, the knife disc mechanism and the mixing and applying mechanism are connected to the feeding mechanism, and the feeding mechanism is configured to drive the knife disc mechanism and the mixing and applying mechanism to perform planar two-axis motion.

[0009] Optionally, an auxiliary braking device is further included, wherein the auxiliary braking device includes two jaws, and the fan brake disc is clamped between the two jaws.

[0010] Optionally, a plurality of the auxiliary braking devices are provided, and the plurality of the auxiliary braking devices are evenly distributed along the circumference of the fan brake disc.

[0011] Optionally, it further comprises an annular guide rail, which is arranged parallel to the fan brake disc, and the online repair device is slidably arranged on the annular guide rail.

[0012] Optionally, the auxiliary braking device includes a screw rod, which is perpendicular to the fan brake disc, and the jaws are inserted into the screw rod and threadedly engaged with the screw rod. The threads at both ends of the screw rod have opposite rotation directions, and the two jaws are respectively arranged on opposite threads of the screw rod.

[0013] Optionally, a rotary motor is further included, wherein the rotary motor is configured to control the rotation of the auxiliary braking device, the guide rod is parallel to the screw rod, and the jaws are penetrated on the guide rod.

[0014] Optionally, the auxiliary braking device includes a rotating motor, and a sensor is provided on the annular guide rail. The sensor is configured to identify the position of the online repair device, and the sensor is connected to the rotating motor signal.

[0015] Optionally, the online repair device includes a protective cover, and the feeding mechanism, the knife disc mechanism and the mixing and applying mechanism are arranged in the protective cover.

[0016] Optionally, an openable window is provided on the protective cover.

[0017] The beneficial effects brought by the technical solution provided by the embodiment of the utility model include at least:

[0018] An online repair device for a fan brake disc provided in an embodiment of the utility model first grinds the worn parts on the fan brake disc through a knife disc mechanism, then repairs the worn parts through a mixed smearing mechanism, and finally refines and grinds the repaired surface through the knife disc mechanism, which can effectively solve the problems of long construction period, high cost and large loss of wind turbine power generation in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0020] Figure 1 It is a schematic diagram of the overall structure of the online repair device for the fan brake disc provided by the embodiment of the utility model;

[0021] Figure 2 It is a schematic diagram of the structure of an online repair device provided by an embodiment of the utility model;

[0022] Figure 3 The utility model embodiment provides Figure 2 A magnified schematic diagram of point A;

[0023] Figure 4 It is a schematic diagram of the structure of the auxiliary braking device provided by an embodiment of the utility model;

[0024] Figure 5 It is a cross-sectional schematic diagram of the cooperation between the annular guide rail and the online repair device provided in an embodiment of the utility model.

[0025] In the figure: 1-online repair device; 11-feeding mechanism; 111-X-axis motor; 112-Y-axis motor; 113-first pulley; 114-second pulley; 115-third pulley; 116-fourth pulley; 117-first connecting piece; 118-second connecting piece; 119-third connecting piece; 12-cutter mechanism; 121-grinding wheel head; 122-sandpaper head; 123-rotating mechanism; 13-mixing and applying mechanism; 131-first storage tank; 132-second storage tank; 133-rotating mixing mechanism; 134-flat mouth; 14-protective cover; 141-openable window; 2-auxiliary braking device; 21-jaw; 22-screw; 23-guide rod; 24-rotating motor; 3-fan brake disc; 4-annular guide rail; 41-slider; 42-gear; 43-guide wheel; 44-rack; 5-sensor. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solution and advantages of the present invention more clear, the implementation mode of the present invention will be further described in detail below with reference to the accompanying drawings.

[0027] Figure 1 It is a schematic diagram of the overall structure of the online repair device for the fan brake disc provided by the embodiment of the utility model; Figure 2 It is a schematic diagram of the structure of an online repair device provided by an embodiment of the utility model; Figure 3 The utility model embodiment provides Figure 2 A magnified schematic diagram of point A; Figure 4 It is a schematic diagram of the structure of the auxiliary braking device provided by an embodiment of the utility model; Figure 5 Schematic diagram of the cross section of the ring guide rail and the online repair device provided by the embodiment of the utility model. Figures 1 to 5An online repair device for a fan brake disc is shown, comprising: an online repair device 1 and a fan brake disc 3, the fan brake disc 3 is horizontally arranged, the fan brake disc 3 is a ring structure, the online repair device 1 can be slidably arranged on the fan brake disc 3, the online repair device 1 comprises a knife disc mechanism 12 and a mixing coating mechanism 13, the knife disc mechanism 12 is used to grind the fan brake disc 3, and the mixing coating mechanism 13 is used to coat the fan brake disc 3 with a metal repair agent.

[0028] For example, in the embodiment of the utility model, the online repair device 1 is fixed relative to the fan brake disc 3 when repairing the fan brake disc 3. The grinding wheel head 121 and the sandpaper head 122 are arranged on the third connecting member 119 through the rotating mechanism 123. The cutter head mechanism 12 can switch between two working modes through the rotating mechanism 123. When the rotating mechanism 123 rotates the grinding wheel head 121 to a position close to the fan brake disc 3, the roughening process of the worn part can be completed. The grinding wheel head 121 has sandpaper of 120 mesh or more, which is used to grind the worn part to make its surface as rough as possible, and the grinding depth is controlled to be greater than or equal to 0.8mm of the damaged surface. It is placed for a period of time to ensure that the surface of the fan brake disc 3 is dry. Afterwards, the roughened worn part is smeared by the mixed smearing mechanism 13. The metal repair agent used in the device is a two-component paste, which is stored in the first storage tank 131 and the second storage tank 132 respectively. It has a certain viscosity after being mixed in a ratio of 3:1. It is an epoxy repair agent with titanium alloy as a reinforcing material. The titanium alloy inside the repair agent can greatly improve the working strength and hardness of the repair agent. The mixed repair agent is pressed to the flat mouth 134 and applied to the damaged position of the brake disc. The chemical reaction between the two components will cause the mixture to dissipate a large amount of heat and accelerate the curing of the repair agent. The cured repair layer has high wear resistance, corrosion resistance, heat resistance and machining performance, and can meet the surface roughness design requirements. In order to avoid affecting the mechanical strength of the fan brake disc 3 surface after application, the sandpaper head 122 should be rotated to a position close to the fan brake disc 3 through the rotating mechanism 123 for grinding and shaping after the repair agent solidifies. Since the hardness of the metal repair agent will increase with time, considering that surface treatment after complete solidification will cause damage to the mold and affect the repair effect, processing should be performed when the hardness of the metal repair agent is within the processable range. Processing should be performed about 10 hours after the application of the repair agent, which is conducive to ensuring processing accuracy. Sandpaper heads 122 with different purposes can be switched inside the device, and 100-mesh sandpaper is used for fine grinding to ensure that the surface roughness reaches Ra6.3, the flatness reaches 0.2mm, the parallelism with the other side reaches 0.2mm, and the runout relative to the yaw brake mounting surface is less than 0.2mm. Through the cooperation between the feeding mechanism 11, the blade mechanism 12 and the mixing and coating mechanism 13, the worn parts of the fan brake disc 3 can be repaired. Compared with the prior art that requires shutdown for maintenance, the present device can save a lot of power generation losses caused by shutdown for maintenance, reduce the power generation losses caused by yaw errors and the energy required to re-produce the fan brake disc 3.Once the wind turbine brake disc 3 fails, the onshore wind turbine generator set needs 2 to 4 days of maintenance time. If it is severely worn, it needs to be hoisted and replaced, which takes about a month. However, the present device can realize non-stop maintenance, and every average yaw error of 15° will cause a single generator set to lose 5 to 13% of annual power generation. Taking a 2MW wind turbine generator set as an example, based on the prediction of the wind turbine life and the calculation of the amount of wear, the number of wind turbine electrical failures in a year is about 3 times. Calculated based on 3 days of shutdown for maintenance, 432,000 degrees of power generation loss due to shutdown for maintenance can be saved, and 540,000 degrees of power generation loss due to yaw error can be saved. It can be seen that the energy-saving benefits are considerable.

[0029] An online repair device for a fan brake disc provided in an embodiment of the utility model first grinds the worn parts on the fan brake disc 3 through a knife disc mechanism 12, then repairs the worn parts through a mixing and smearing mechanism 13, and finally refines and grinds the repaired surface through the knife disc mechanism 12, which can effectively solve the problems of long construction period, high cost and large loss of wind turbine power generation in the prior art.

[0030] Optionally, the wire repair device 1 includes a feeding mechanism 11, and a knife disc mechanism 12 and a mixing and applying mechanism 13 are connected to the feeding mechanism 11, and the feeding mechanism 11 is configured to drive the knife disc mechanism 12 and the mixing and applying mechanism 13 to perform planar two-axis motion.

[0031] For example, in the embodiment of the utility model, the feeding mechanism 11 includes an X-axis motor 111, a Y-axis motor 112, a first pulley 113, a second pulley 114, a third pulley 115, a fourth pulley 116, a first connecting member 117, a second connecting member 118 and a third connecting member 119. The knife disc mechanism 12 includes a grinding wheel head 121, a sandpaper head 122 and a rotating mechanism 123, and the mixing and applying mechanism 13 includes a first material storage tank 131, a second material storage tank 132, a rotating mixing mechanism 133 and a flat mouth 134. Figure 2 and Figure 3As shown, the first pulley 113, the second pulley 114 and the third pulley 115 are arranged in parallel, the fourth pulley 116 is arranged vertically to the first pulley 113, the Y-axis motor 112 is connected to one end of the first pulley 113, the other end of the first pulley 113 is coaxially connected to the second pulley 114 and the third pulley 115, the other end of the second pulley 114 is coaxially connected to the other end of the third pulley 115, the fourth pulley 116 is arranged on the guide plane formed by the second pulley 114 and the third pulley 115 through the first connecting member 117 and the second connecting member 118, one end of the fourth pulley 116 is connected to the X-axis motor, and the knife disc mechanism 12 and the mixing and smearing mechanism 13 are arranged on the fourth pulley 116 through the third connecting member 119. As the Y-axis motor 112 rotates, the first pulley 113, the second pulley 114 and the third pulley 115 can be driven to rotate at the same time, so that the fourth pulley 116 carries the X-axis motor 111, the third connecting member 119, the knife disc mechanism 12 and the mixing and smearing mechanism 13 thereon to move together along the Y-axis direction. As the X-axis motor 111 rotates, the fourth pulley 116 can be driven to rotate, so that the third connecting member 119 carries the knife disc mechanism 12 and the mixing and smearing mechanism 13 thereon to move together along the X-axis direction, thereby achieving the two-axis movement of the knife disc mechanism 12 and the mixing and smearing mechanism 13 along the plane in the X-axis and Y-axis directions. This structure is simple and easy to operate, which improves the convenience of operation of the online repair device.

[0032] Optionally, an auxiliary braking device 2 is further included, and the auxiliary braking device 2 includes two jaws 21 , and the fan brake disc is clamped between the two jaws 21 .

[0033] For example, in the embodiment of the utility model, since the fan brake disc 3 is clamped between the two jaws 21 of the auxiliary brake device 2, the auxiliary brake device 2 can clamp and brake the fan brake disc 3, so that the fan brake disc 3 can work normally, and the fan impeller is kept facing the wind, thereby ensuring the normal operation of the fan. By providing the auxiliary brake device 2, the device can still repair the wear of the fan brake disc 3 while ensuring that the fan brake disc 3 can work normally.

[0034] Optionally, a plurality of auxiliary braking devices 2 are provided, and the plurality of auxiliary braking devices 2 are evenly distributed along the circumference of the fan brake disc 3 .

[0035] Exemplarily, in the embodiment of the utility model, by providing a plurality of auxiliary braking devices 2, the braking effect of the auxiliary braking devices 2 on the fan brake disc 3 can be improved, thereby improving the operating stability of the fan brake disc online repair device.

[0036] Optionally, it further comprises an annular guide rail 4 which is arranged parallel to the fan brake disc 3 , and the online repair device 1 is slidably arranged on the annular guide rail 4 .

[0037] For example, in the embodiment of the utility model, a slider 41, a gear 42, a guide wheel 43 and a rack 44 are also included. The bottom of the slider 41 is fixedly connected to the top of the online repair device 1, the gear 42 and the guide wheel 43 are fixedly arranged on the top of the slider 41, and the annular guide rail 4 is segmented for easy installation. The top of the annular guide rail 4 is fixedly arranged inside the fan, such as Figure 5 As shown, the cross section of the annular guide rail 4 is an I-shaped, a rack 44 is provided on one side of the waist of the I-shaped, a gear 42 matching the rack 44 is provided on the slider 41, and the other side of the waist of the I-shaped cooperates with the annular guide rail 4 through the guide wheel 43 to provide support and guide force. Through the cooperation of the rack 44, the gear 42 and the guide wheel 43, the slider 41 can be slidably arranged on the annular guide rail 4, and the online repair device 1 is fixedly connected to the slider 41, so that the online repair device 1 can be slidably arranged on the annular guide rail 4. The cross section of the online repair device 1 is a C-shaped structure wrapped around the outside of the fan brake disk 3. In the process of the online repair device 1 repairing the fan brake disk 3, some debris generated by the online repair device 1 can be collected in the online repair device 1 to prevent the debris from splashing and negatively affecting the device. This structure is simple and easy to operate, which further improves the convenience of operation of the online repair device.

[0038] Optionally, the auxiliary braking device 2 includes a screw 22, which is perpendicular to the fan brake disc 3, and the jaws 21 are penetrated through the screw 22 and threadedly engaged. The threads at both ends of the screw 22 have opposite rotation directions, and the two jaws 21 are respectively arranged on opposite threads of the screw 22.

[0039] Illustratively, in an embodiment of the utility model, the jaw 21 is arranged on the screw 22. By rotating the screw 22, the jaw 21 can be moved to clamp the fan brake disk 3. The threads at both ends of the screw 22 rotate in opposite directions. The two jaws 21 are respectively arranged on the opposite threads of the screw 22. The screw 22 can be rotated to make the two jaws 21 move towards each other at the same time to clamp the fan brake disk 3. There is no need to separately control the movement of the two jaws 21. Through this structure, the operational convenience of the online repair device is further improved.

[0040] Optionally, the auxiliary braking device 2 includes a guide rod 23 , the guide rod 23 is parallel to the screw rod 22 , and the jaws 21 are penetrated on the guide rod 23 .

[0041] Exemplarily, in an embodiment of the utility model, by providing a guide rod 23, a guiding force can be provided when the jaw 21 moves along the screw 22, so that the jaw 21 can move stably along the direction of the screw 22, further improving the operating stability of the fan brake disc online repair device.

[0042] Optionally, a rotating motor 24 is further included, which is configured to control the rotation of the auxiliary braking device 2. A sensor 5 is provided on the annular guide rail 4, and the sensor 5 is configured to identify the position of the online repair device 1. The sensor 5 is connected to the rotating motor 24 by signal.

[0043] For example, in the embodiment of the utility model, since the fan brake disc 3 needs to rotate during operation and adjust the position so that the fan blades are facing the wind, the online repair device for the fan brake disc needs a certain amount of time to repair the worn parts of the fan brake disc 3. During this period, when the fan brake disc 3 needs to rotate, the online repair device 1 may cause motion interference with the auxiliary brake device 2. In addition, when the online repair device 1 repairs the fan brake disc 3, it will be relatively fixed with the fan brake disc 3. After the online repair device 1 completes the repair of a certain surface and needs to be transported to the next position to be repaired, it may also cause motion interference with the auxiliary brake device 2. At this time, by providing a rotating motor 24 and a sensor 5, when the sensor 5 recognizes that the auxiliary braking device 2 is about to produce motion interference with the online repair device 1, the sensor 5 transmits a signal to the rotating motor 24, and the two jaws 21 are separated by rotating the screw 22. The auxiliary braking device 2 is rotated by the rotating motor 24, so that the jaws 21 move to the other side of the fan brake disc 3, so that the auxiliary braking device 2 will not produce motion interference with the online repair device 1. Through this structure, the operational convenience of the online repair device is further improved.

[0044] Optionally, the online repair device 1 includes a protective cover 14 , and the feeding mechanism 11 , the blade disc mechanism 12 and the mixing and applying mechanism 13 are arranged in the protective cover 14 .

[0045] For example, in the embodiment of the utility model, the feeding mechanism 11 is fixed inside the protective cover 14 by a fixed connecting piece. In order to ensure the strength and corrosion resistance of the protective cover 14, the material thereof is selected to be engineering plastic polycarbonate. By providing the protective cover 14, the feeding mechanism 11, the blade mechanism 12 and the mixing and applying mechanism 13 can be protected, the service life of the components is increased, and the operation stability of the online repair device for the fan brake disc is further improved.

[0046] Optionally, an openable window 141 is provided on the protection cover 14 .

[0047] Illustratively, in an embodiment of the utility model, an openable window 141 is provided on the protective cover 14, so that the grinding wheel head 121 and the sandpaper head 122 in the cutter disc mechanism 12 can be maintained through the openable window 141, and the metal repair agent in the first storage tank 131 and the second storage tank 132 can be replaced through the openable window 141. The openable window 141 adopts an openable and closable structure, so that the protective cover 14 not only protects the internal structure, but also facilitates the maintenance of the internal structure, further improving the operational convenience of the online repair device.

[0048] Unless otherwise defined, the technical terms or scientific terms used herein shall have the usual meanings understood by persons with ordinary skills in the field to which the utility model belongs. The words "first", "second" and similar words used in the specification and claims of the utility model patent application do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, words such as "one" or "one" do not indicate a quantity limitation, but indicate the existence of at least one. Words such as "include" or "comprise" mean that the elements or objects appearing before "include" or "comprise" include the elements or objects listed after "include" or "comprise" and their equivalents, and do not exclude other elements or objects. Words such as "connect" or "connected" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0049] The above description is only an optional embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A fan brake disc online repair device, characterized in that: include: Online repair device (1) and fan brake disc (3), The fan brake disc (3) is arranged horizontally, and the fan brake disc (3) is an annular structure. The online repair device (1) can be slidably arranged on the fan brake disc (3). The online repair device (1) comprises a knife disc mechanism (12) and a mixing and applying mechanism (13). The knife disc mechanism (12) is used to grind the fan brake disc (3), and the mixing and applying mechanism (13) is used to apply a metal repair agent to the fan brake disc (3).

2. The online repair device for a fan brake disc according to claim 1, characterized in that: The wire repair device (1) comprises a feeding mechanism (11), the knife disc mechanism (12) and the mixing and smearing mechanism (13) are connected to the feeding mechanism (11), and the feeding mechanism (11) is configured to drive the knife disc mechanism (12) and the mixing and smearing mechanism (13) to perform two-axis motion in a plane.

3. The online repair device for a fan brake disc according to claim 1, characterized in that: It also comprises an auxiliary braking device (2), wherein the auxiliary braking device (2) comprises two jaws (21), and the fan brake disc is clamped between the two jaws (21).

4. The online repair device for a fan brake disc according to claim 3 is characterized in that: A plurality of the auxiliary braking devices (2) are provided, and the plurality of the auxiliary braking devices (2) are evenly distributed along the circumference of the fan brake disc (3).

5. The online repair device for a fan brake disc according to claim 4, characterized in that: It also comprises an annular guide rail (4), wherein the annular guide rail (4) is arranged in parallel on the fan brake disc (3), and the online repair device (1) is slidably arranged on the annular guide rail (4).

6. The online repair device for a fan brake disc according to claim 5, characterized in that: The auxiliary braking device (2) comprises a screw (22), the screw (22) is perpendicular to the fan brake disc (3), the jaws (21) are penetrated through the screw (22) and threadedly engaged, the threads at both ends of the screw (22) are in opposite directions, and the two jaws (21) are respectively arranged on opposite threads of the screw (22).

7. The online repair device for a fan brake disc according to claim 6, characterized in that: The auxiliary braking device (2) comprises a guide rod (23), the guide rod (23) is parallel to the screw rod (22), and the jaws (21) are penetrated on the guide rod (23).

8. The online repair device for a fan brake disc according to claim 6, characterized in that: The invention also comprises a rotating motor (24), wherein the rotating motor (24) is configured to control the rotation of the auxiliary braking device (2); a sensor (5) is arranged on the annular guide rail (4), wherein the sensor (5) is configured to identify the position of the online repair device (1); and the sensor (5) is connected to the rotating motor (24) by signal.

9. The online repair device for a fan brake disc according to claim 2, characterized in that: The online repair device (1) comprises a protective cover (14), and the feeding mechanism (11), the knife disc mechanism (12) and the mixing and applying mechanism (13) are arranged in the protective cover (14).

10. The online repair device for a fan brake disc according to claim 9, characterized in that: The protective cover (14) is provided with an openable window (141).

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