Upper friction plate replacement tool

Abstract

The utility model belongs to the field of wind power devices, and discloses a tool for replacing an upper friction plate. Comprising a mounting bracket and a jacking assembly, a fixing structure is formed on the mounting bracket and is used for being fixed on a tower drum; the jacking assembly is arranged on the mounting support and used for jacking a main machine frame connected with the tower drum. According to the upper friction plate replacing tool, when an upper friction plate needs to be replaced, bolt connection at the position, needing to be replaced, between a tower drum and a main machine frame is removed, an installation support is installed on the tower drum, the main machine frame connected with the tower drum is jacked through a jacking assembly, and then the upper friction plate is replaced. When the upper friction plates are replaced, the main machine frame is lifted, so that the main machine frame is separated from the yaw gear ring on the tower drum, the upper friction plates in the yaw gear ring are exposed, at the moment, all the exposed upper friction plates can be taken out and replaced, the upper friction plates do not need to be replaced one by one, and synchronous and rapid replacement of the multiple upper friction plates is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of wind power devices, in particular to an upper friction plate replacement tool. Background Art

[0002] Currently, there are two modes of active wind turbine yaw systems: active yaw and passive yaw. Passive yaw is widely used due to its lower cost, compact structure, high damping and low vibration. Passive yaw mainly uses mechanical calipers and upper friction plates to provide friction resistance and motor torque for braking. Therefore, it is very common for the upper friction plate to be damaged due to excessive wear or other reasons and need to be replaced.

[0003] There are two main methods in the existing replacement scheme. The first method is to use the tower top bolts to lift the main frame with long bolts to replace the upper friction plate. The second method is to open an annular notch at the original upper friction plate installation position, and drive the main frame to rotate to the notch position by a motor to replace the upper friction plate. However, the existing lifting scheme uses too many tower top bolt holes for each replacement, and the steps are cumbersome, while the groove scheme will occupy the original position of the upper friction plate, which reduces the yaw braking ability. In summary, it is impossible to quickly replace multiple friction plates in the existing technology. Utility Model Content

[0004] The main purpose of the utility model is to provide an upper friction plate replacement tool, aiming to solve the problem that multiple friction plates cannot be replaced quickly.

[0005] In order to achieve the above-mentioned purpose, the utility model provides an upper friction plate replacement tool, comprising:

[0006] A mounting bracket, wherein a fixing structure is formed on the mounting bracket for fixing to the tower; and

[0007] A lifting assembly is arranged on the mounting bracket and is used for lifting a main frame connected to the tower.

[0008] Optionally, the lifting assembly includes a driving part and a transmission part, the driving part is mounted on the mounting bracket, and the driving part drives the transmission part to move to lift the main frame.

[0009] Optionally, the lifting assembly includes a jack, the hydraulic end of the jack forms the driving part, and the output shaft of the jack forms the transmission part.

[0010] Optionally, the transmission part has a contact end surface for contacting the main frame;

[0011] The lifting assembly further comprises a buffer member, and the buffer member is arranged on the contact end surface.

[0012] Optionally, the buffer member includes a rubber gasket.

[0013] Optionally, the lifting assembly is movably mounted on the mounting bracket to correspond to different positions of the main frame.

[0014] Optionally, the upper friction plate replacement tool further includes a slide rail and a slider, the slide rail is mounted on the mounting bracket, a slide groove is formed on the slider, and the slide groove is slidably mounted on the slide rail;

[0015] The lifting assembly is mounted on the slide block.

[0016] Optionally, the mounting bracket has a mounting end surface, and the mounting end surface is used to face the main frame;

[0017] A mounting groove is formed on the mounting end surface, and the slide rail is arranged in the mounting groove.

[0018] Optionally, the slide rail and the slider form a slide group, and a plurality of the slide groups are provided, and the plurality of slide groups are arranged at intervals;

[0019] The lifting assembly is selectively installed on the sliding block of one of the sliding groups.

[0020] Optionally, a plurality of via holes are formed on the mounting bracket;

[0021] The fixing structure comprises a fixing bolt, and the fixing bolt is passed through the through hole and is used for being threadedly connected to the threaded hole of the tower.

[0022] The utility model provides an upper friction plate replacement tool, wherein a jacking assembly is arranged on the mounting bracket, and when the upper friction plate needs to be replaced, the bolt connection at the position where the replacement is required between the tower and the main frame is removed, the mounting bracket is installed on the tower, and the main frame connected to the tower is jacked by the jacking assembly, and the main frame is lifted, so that the main frame is separated from the yaw gear ring on the tower to expose the upper friction plate therein, at this time, the exposed upper friction plates can all be taken out and replaced, without the need to replace the upper friction plates one by one, so that the synchronous and rapid replacement of multiple upper friction plates can be realized, and by externally providing the upper friction plate replacement tool, the structure of the wind power yaw system itself will not be affected, and the applicability is higher. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the top view of the structure of the upper friction plate replacement tool provided by the embodiment of the utility model;

[0024] Figure 2 yes Figure 1Schematic diagram of the three-dimensional structure of the middle lifting assembly;

[0025] Figure 3 It is a schematic diagram of the installation structure of the upper friction plate replacement tooling provided by the embodiment of the utility model.

[0026] Description of Figure Numbers:

[0027] Label name Label name 100 Upper friction plate replacement tool 23 Buffer 1 Mounting bracket 31 Slide rails 2 Lifting components 32 slider 21 Drive unit 4 Fixing bolts 22 Transmission

[0028] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0030] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back...), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0031] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing in the full text includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme that satisfies both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the utility model.

[0032] Currently, there are two modes of active wind turbine yaw systems: active yaw and passive yaw. Passive yaw is widely used due to its lower cost, compact structure, high damping and low vibration. Passive yaw mainly uses mechanical calipers and upper friction plates to provide friction resistance and motor torque for braking. Therefore, it is very common for the upper friction plate to be damaged due to excessive wear or other reasons and need to be replaced.

[0033] There are two main methods in the existing replacement scheme. The first method is to use the tower top bolts to lift the main frame with long bolts to replace the upper friction plate. The second method is to open an annular notch at the original upper friction plate installation position, and drive the main frame to rotate to the notch position by a motor to replace the upper friction plate. However, the existing lifting scheme uses too many tower top bolt holes for each replacement, and the steps are cumbersome, while the groove scheme will occupy the original position of the upper friction plate, which reduces the yaw braking ability. In summary, it is impossible to quickly replace multiple friction plates in the existing technology.

[0034] See also Figure 1 The utility model provides an upper friction plate replacement tool 100, comprising a mounting bracket 1 and a lifting assembly 2; a fixing structure is formed on the mounting bracket 1 for fixing to a tower; the lifting assembly 2 is arranged on the mounting bracket 1 for lifting a main frame connected to the tower.

[0035] In the upper friction plate replacement tool 100 provided by the utility model, a jacking assembly 2 is arranged on the mounting bracket 1. When the upper friction plate needs to be replaced, the bolt connection at the position where the replacement is required between the tower and the main frame is removed, the mounting bracket 1 is installed on the tower, and the main frame connected to the tower is jacked up by the jacking assembly 2, and the main frame is lifted, so that the main frame is separated from the yaw gear ring on the tower to expose the upper friction plate therein. At this time, all the exposed upper friction plates can be taken out and replaced without replacing the upper friction plates one by one, so that multiple upper friction plates can be replaced synchronously and quickly. Moreover, by externally providing the upper friction plate replacement tool 100, the structure of the wind power yaw system itself will not be affected, and the applicability is higher. The upper friction plate is not replaced by opening a groove, so as to avoid the situation where the driving capacity is reduced. Moreover, there is no need to rotate the main frame to replace the upper friction plate, so as to improve the safety and reliability of operation.

[0036] For further information, see Figure 2The lifting assembly 2 includes a driving part 21 and a transmission part 22. The driving part 21 is mounted on the mounting bracket 1. The driving part 21 drives the transmission part 22 to move to lift the main frame. In this embodiment, the main frame is automatically lifted by the cooperation between the driving part 21 and the transmission part 22. It is sufficient to drive the driving part 21 to work.

[0037] It should be noted that there are many implementations of the driving part 21 and the transmission part 22, such as using a motor to drive a transmission rod to move so as to lift the main frame, or using a hydraulic cylinder to drive.

[0038] Specifically, in this embodiment, the lifting assembly 2 includes a jack, the hydraulic end of the jack forms the driving part, and the output shaft of the jack forms the transmission part. In this embodiment, the main frame is lifted by the jack, which has a large bearing capacity and can maintain the lifting position for a long time.

[0039] It should be noted that, in this embodiment, the jacking assembly 2 may also include a transmission rod connected to the output shaft of the jack. By abutting the transmission rod against the main frame, the working range of the jack can be increased, which facilitates more flexible setting of the height position relative to the main frame.

[0040] In addition, in this embodiment, the lifting force output by the driving part 21 is transmitted to the main frame through the transmission part 22. In order to avoid the main frame being damaged by a single point of force, the transmission part 22 has a contact end surface for contacting the main frame; the lifting assembly 2 also includes a buffer 23, and the buffer 23 is arranged on the contact end surface. In this embodiment, the force output by the driving part 21 is buffered and output through the buffer 23 to ensure the safety of the force point of the main frame.

[0041] It should be noted that the buffer member 23 may be implemented in a variety of ways, such as using a plurality of connecting springs, etc., as long as the contact area between the buffer member 23 and the main frame can be increased.

[0042] Specifically, in this embodiment, the buffer member 23 includes a rubber gasket. In this embodiment, the rubber gasket has a good buffering effect and can also increase the contact area with the main frame, thereby avoiding damage to the main frame.

[0043] It should be noted that, in the embodiment provided by the utility model, the jacking assembly 2 can be provided with multiple groups, and the multiple jacking assemblies 2 are arranged at intervals on the mounting bracket 1 to facilitate jacking at multiple points at the same time, thereby avoiding shaking of the main frame during the jacking process.

[0044] On the other hand, the lifting assembly 2 is movably mounted on the mounting bracket 1 to correspond to different positions of the main frame. In this embodiment, the lifting assembly 2 is movably mounted on the mounting bracket 1. When the upper friction plate at a different position needs to be replaced, the lifting assembly 2 can be directly moved on the mounting bracket 1 to a different position without disassembling the mounting bracket 1, and then lifted again to achieve the replacement of the upper friction plate at a different position.

[0045] It should be noted that, in the present embodiment, there are a variety of ways to movably install the lifting component 2 on the mounting bracket 1. For example, a movable rod and a movable block mounted on the movable rod are provided on the mounting bracket, and the lifting component 2 is installed on the movable block, so as to realize the movement of the lifting component 2 along the movable rod.

[0046] Specifically, the upper friction plate replacement tool 100 further includes a slide rail 31 and a slider 32. The slide rail 31 is mounted on the mounting bracket 1. The slider 32 is formed with a slide groove, and the slide groove is slidably mounted on the slide rail 31. The jacking assembly 2 is mounted on the slider 32. In this embodiment, the sliding of the jacking assembly 2 is achieved through the cooperation of the slide rail 31 and the slider 32. The track cooperation structure between the slide rail 31 and the slider 32 has a large load-bearing capacity, and at the same time, the range of motion can be controlled.

[0047] Furthermore, the mounting bracket 1 has a mounting end surface, the mounting end surface is used to face the main frame; a mounting groove is formed on the mounting end surface, and the slide rail 31 is arranged in the mounting groove. In this embodiment, the slide rail 31 is arranged in the mounting groove to prevent the slide rail 31 from being protruded on the mounting end surface and being damaged during storage, thereby preventing problems in the subsequent active cooperation between the slide rail 31 and the slider 32.

[0048] In order to facilitate the positioning of the slider 32 on the slide rail 31 , in the present embodiment, a positioning structure is further formed between the slider 32 and the slide rail 31 to position the slider at a fixed position after movement.

[0049] There is an interference fit between the slide groove of the slider 32 and the slide rail.

[0050] In addition, a driving device may be further included, and the driving device is used to drive the sliding block 32 to move on the sliding rail 31 .

[0051] The driving device may be implemented in a variety of ways, such as using a driving motor or a driving cylinder, etc., which are not specifically limited here.

[0052] It should be noted that there are a variety of fixing methods between the slide rail 31 and the mounting bracket 1. In this embodiment, the slide rail 31 is installed on the mounting bracket 1 by bolt connection to ensure the stability of the installation.

[0053] In addition, the slide rail 31 and the slider 32 form a sliding group, and the sliding group is provided in plurality, and the plurality of sliding groups are arranged at intervals; the lifting assembly 2 is selectively installed on the slider 32 of one of the sliding groups. In this embodiment, a plurality of sliding groups are provided, and when lifting is required, the lifting assembly 2 can be installed on one of the sliding groups according to actual conditions, so as to lift the main frame at different force-bearing positions.

[0054] It should be noted that, in this embodiment, there are multiple ways to install the jacking assembly 2 on the slider 32. In order to facilitate disassembly and ensure the stability of the jacking assembly 2, the jacking assembly 2 has a fixed end, and the fixed end is fixed to the slider 32 by bolts.

[0055] Specifically, in this embodiment, the lifting assembly includes a jack, and the hydraulic end of the jack forms the fixed end.

[0056] It should be noted that, in this embodiment, the fixing structure has multiple implementations, and the mounting bracket 1 can be fixed in the tower by welding it in the form of welding points.

[0057] On the other hand, in this embodiment, a plurality of through holes are formed on the mounting bracket 1; the fixing structure includes a fixing bolt 4, which is inserted into the through hole and threadedly connected to the threaded hole of the tower. In this embodiment, the mounting bracket 1 is fixed to the threaded hole of the tower by the fixing bolt 4, and the fixing method is simple and reliable, and is easy to disassemble and set.

[0058] It should be noted that the mounting bracket has a length direction extending along the first direction, and the fixing structures are provided at both ends of the length direction so as to be straddled on the tower for fixing.

[0059] In addition, in this embodiment, the mounting bracket 1 has multiple implementations, as long as it can carry the jacking component 2. In the specific embodiment provided by the utility model, the mounting bracket 1 is arranged as a mounting plate, which is convenient for the installation of the jacking component 2 and the setting of the fixed structure, and has a simple structure.

[0060] Furthermore, in this embodiment, the end surface cross-section of the mounting plate is arranged to be arc-shaped to increase the force bearing capacity of the mounting plate.

[0061] See also Figure 3 Based on the above-mentioned upper friction plate replacement tool 100, the utility model provides a specific embodiment.

[0062] When the upper friction plate needs to be replaced, some bolts and brakes between the tower and the main frame are removed accordingly; in this embodiment, there is no need to remove multiple bolts between the tower and the main frame, and there is no need to provide an opening on the friction plate.

[0063] The mounting bracket 1 is installed to the threaded hole on the tower for docking with the main frame by means of the fixing bolts 4; in the present embodiment, the mounting bracket 1 is installed to the tower by means of bolt installation, so that the jacking assembly 2 on the mounting bracket 1 corresponds to the main frame here.

[0064] In addition, in order to protect the fixing bolt 4, a protective sleeve is also sleeved on the fixing bolt 4. One end of the protective sleeve is abutted against the mounting bracket 1, and the other end is used to abut against the main frame to prevent the fixing bolt 4 from excessive movement.

[0065] According to the position and number of friction plates that need to be lifted, one of the multiple sliding groups is selected to install the lifting component 2; in the present embodiment, since the upper friction plates in not all areas need to be replaced, the sliding group closer to the upper friction plates that need to be replaced can be selected during lifting, and the lifting component 2 is arranged on the sliding group, so that the lifting component 2 can effectively open the gap at the required position for easy operation.

[0066] The lifting assembly 2 is driven on the slide rail to move corresponding to the upper friction plate that needs to be replaced. In the present embodiment, in order to facilitate the replacement of different upper friction plates in the area, after completing one replacement, the lifting assembly 2 can be moved to a position corresponding to another upper friction plate in the area, and lifted there. By performing the lifting again, the replacement of multiple upper friction plates can be completed at one time, and the operation is simple.

[0067] The jack is driven to work so that the rubber gasket abuts against the main frame to lift the main frame. In this embodiment, the rubber gasket can avoid wear on the main frame and prevent the output rod of the jack from directly abutting against the main frame to cause damage.

[0068] Replace the upper friction plate. In this embodiment, it is not necessary to replace the upper friction plates one by one, and multiple upper friction plates can be replaced synchronously and quickly. The upper friction plate replacement tool 100 is provided externally, which does not affect the structure of the wind power yaw system itself, and has higher applicability. The upper friction plate is replaced without opening a groove, which avoids the situation where the driving ability decreases. There is no need to rotate the main frame to replace the upper friction plate, which improves the safety and reliability of the operation.

[0069] The above are only preferred embodiments of the present invention, and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. An upper friction plate replacement tool, characterized in that: include: A mounting bracket, wherein a fixing structure is formed on the mounting bracket for fixing to the tower; as well as, A lifting assembly, arranged on the mounting bracket, for lifting a main frame connected to the tower; The lifting assembly includes a driving part and a transmission part, wherein the driving part is mounted on the mounting bracket, and the driving part drives the transmission part to move so as to lift the main frame; The transmission part has a contact end surface for contacting with the main frame; The lifting assembly further comprises a buffer member, and the buffer member is arranged on the contact end surface.

2. The upper friction plate replacement tool according to claim 1, characterized in that: The lifting assembly includes a jack, a hydraulic end of the jack forms the driving part, and an output shaft of the jack forms the transmission part.

3. The upper friction plate replacement tool according to claim 1, characterized in that: The buffer member includes a rubber gasket.

4. The upper friction plate replacement tool according to claim 1, characterized in that: The lifting assembly is movably mounted on the mounting bracket to correspond to different positions of the main frame.

5. The upper friction plate replacement tool according to claim 4, characterized in that: The upper friction plate replacement tool further includes a slide rail and a slider, wherein the slide rail is mounted on the mounting bracket, and a slide groove is formed on the slider, and the slide groove is slidably mounted on the slide rail; The lifting assembly is mounted on the slide block.

6. The upper friction plate replacement tool according to claim 5, characterized in that: The mounting bracket has a mounting end surface, and the mounting end surface is used to face the main frame; A mounting groove is formed on the mounting end surface, and the slide rail is arranged in the mounting groove.

7. The upper friction plate replacement tool according to claim 5, characterized in that: The slide rail and the slider form a slide group, and the slide group is provided in plurality, and the plurality of slide groups are arranged at intervals; The lifting assembly is selectively installed on the sliding block of one of the sliding groups.

8. The upper friction plate replacement tool according to claim 1, characterized in that: A plurality of via holes are formed on the mounting bracket; The fixing structure comprises a fixing bolt, and the fixing bolt is passed through the through hole and is used for being threadedly connected to the threaded hole of the tower.

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