Lubricating and oiling device for variable pitch of fan

Abstract

The fan variable-pitch lubrication oiling device comprises an oil tank, an oiling assembly is arranged on the oil tank, an adjusting assembly is arranged at the bottom of the oil tank, and a mounting plate is connected to the bottom of the adjusting assembly; the adjusting assembly comprises a supporting rod fixedly connected to the mounting plate, the other end of the supporting rod is hinged to the bottom of the oil tank, an adjusting rod is further hinged to the bottom of the oil tank, a sliding block is hinged to the bottom of the adjusting rod, and a guide sliding groove matched with the sliding block is formed in the top of the mounting plate. One section of the first adjusting screw rod is located in the guide sliding groove, and the other section of the first adjusting screw rod penetrates through the side wall of the mounting plate in a threaded mode.

Description

Technical Field

[0001] The present application relates to the technical field of wind power generation, and in particular to a wind turbine pitch-changing lubrication and oiling device. Background Art

[0002] As one of the core parts of the control system of large wind turbines, the variable pitch system plays a very important role in the safe, stable and efficient operation of the unit. Stable variable pitch control has become one of the hot spots and difficulties in the current research of large wind turbine control technology. In simple terms, the variable pitch control technology is to change the angle of attack of the airflow on the blades by adjusting the pitch angle of the blades, thereby controlling the aerodynamic torque and aerodynamic power captured by the wind rotor.

[0003] In order to ensure the effective operation of the variable pitch system, the gear bearing of the variable pitch system needs to be lubricated. The existing oil injection device can inject lubricating oil between the inner ring and the outer ring of the variable pitch bearing to ensure low-wear operation. The oil injection device is generally fixed to other components close to the variable pitch bearing through a mounting plate. An oil tank containing lubricating oil is provided on the mounting plate. The lubricating oil in the oil tank is sprayed to the lubrication part through an oil pipeline. In the actual installation process, since the oil pipeline is installed on the oil tank, the oil pipeline mouth needs to be aligned with the lubrication part of the variable pitch bearing, so the position of the oil tank needs to be adjusted. However, the oil tank and the mounting plate are fixedly connected, and the position relationship between other components and lubrication parts that match the mounting plate may not meet the condition that the oil tank and the mounting plate are just horizontally connected. Therefore, it is necessary to prefabricate the oil tank and the mounting plate of the corresponding connection structure in advance according to the connection relationship of the internal components of the variable pitch system, so that the oil tank and the mounting plate meet a certain angle relationship. Therefore, the existing oil injection device has low versatility, a small scope of application, and is difficult to mass produce. Utility Model Content

[0004] The main purpose of the present application is to provide a wind turbine pitch lubrication oil injection device, aiming to solve the technical problem of low versatility of existing oil injection devices.

[0005] To achieve the above-mentioned purpose, the present application provides a wind turbine pitch lubrication and oil injection device, including an oil tank, an oil injection assembly is arranged on the oil tank, an adjustment assembly is arranged at the bottom of the oil tank, and the bottom of the adjustment assembly is connected to a mounting plate; wherein the adjustment assembly includes a support rod fixedly connected to the mounting plate, the other end of the support rod is hinged to the bottom of the oil tank, an adjustment rod is also hinged to the bottom of the oil tank, a slider is hinged to the bottom of the adjustment rod, a guide groove cooperating with the slider is opened at the top of the mounting plate, a first adjusting screw is movably connected to one side of the slider, one section of the first adjusting screw is located in the guide groove, and the other section of the first adjusting screw thread passes through the side wall of the mounting plate.

[0006] Optionally, the top of the oil tank is open, and a partition is provided inside the oil tank, which divides the interior of the oil tank into an oil chamber and an oil return chamber located above the oil chamber. A plurality of oil leakage holes are opened on the partition, and support plates are provided on both opposite sides of the top of the oil tank, and the support plates are used to install the oil filling assembly.

[0007] Optionally, the vertical cross-section of the partition is a concave arc shape.

[0008] Optionally, the oil filling assembly includes an oil pump connected to the bottom of the oil chamber, the oil pump is connected to a main oil pipe, the main oil pipe is connected to an oil distribution box arranged on the outer wall of the oil tank, the oil distribution box is connected to multiple oil distribution pipes, at least one oil distribution pipe is arranged through each of the two support plates, and nozzles are arranged at the ends of the oil distribution pipes on the two support plates that are close to each other.

[0009] Optionally, an adjusting block is movably provided in both support plates, and at least one oil distribution pipe is connected through the adjusting block, and the oil distribution pipe is a soft pipe.

[0010] Optionally, the tops of the two support plates are both threadedly connected with clamping screws, and the clamping screws are used to clamp the top of the adjusting block.

[0011] Optionally, both support plates are provided with oil scraper assemblies, and the oil scraper assemblies are used to contact the lubrication part of the pitch bearing.

[0012] Optionally, the oil scraper assembly includes a second adjusting screw threaded through the support plate, a threaded sleeve on the second adjusting screw is provided with a limit nut located on the inner side of the support plate, the two second adjusting screws are connected to a connecting plate at one end close to each other, and a plurality of bristles are provided on one side of the two connecting plates close to each other, and the bristles are used to contact the lubrication part of the variable pitch bearing.

[0013] Optionally, the connection plate is connected to a vibration sensor via a wire, the vibration sensor is arranged on the outer side of the support plate, the vibration sensor is electrically connected to a controller, and the controller is electrically connected to the oil pump.

[0014] Optionally, a liquid level sensor is provided in the oil chamber.

[0015] The beneficial effects that this application can achieve are as follows:

[0016] The present application supports the oil tank on a mounting plate through an adjusting component, and first installs and fixes the mounting plate on the mounting position of other accessories reserved near the variable pitch bearing, and according to the relative position relationship between the position of the part of the variable pitch bearing that needs to be lubricated and the oil tank, the first adjusting screw is rotated to screw it into or out of the guide groove, thereby pushing or pulling the slider to slide linearly in the guide groove, so that the adjusting rod is rotated to drive the oil tank to rotate along the top of the support rod to adjust the inclination angle of the oil tank, so that the oil outlet of the oil filling assembly can be aligned with the part of the variable pitch bearing that needs to be lubricated. Therefore, the present application separates the mounting plate and the oil tank, and adjusts the oil tank to correspond to the part of the variable pitch bearing that needs to be lubricated through an adjusting component with adjustable oil tank inclination, so that it can be applied to the lubrication of variable pitch bearings with various mounting structures, thereby improving versatility and a wide range of applications to meet mass production needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the specific embodiments of the present application or the technical solutions in the prior art, the following is a brief introduction to the drawings required for the specific embodiments or the prior art description. In all drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn according to the actual scale.

[0018] Figure 1 This is a schematic structural diagram of a wind turbine pitch-changing lubrication and oiling device in an embodiment of the present application;

[0019] Figure 2 for Figure 1 A schematic diagram of the structure of a top view (omitting the mounting plate and adjustment components);

[0020] Figure 3 It is a structural schematic diagram of a wind turbine pitch lubrication and oiling device and a pitch bearing when used together in an embodiment of the present application.

[0021] Reference numerals:

[0022] 110-oil tank, 111-oil chamber, 112-oil return chamber, 120-oil filling assembly, 121-oil pump, 122-main oil pipe, 123-oil distribution box, 124-oil distribution pipe, 125-nozzle, 130-adjustment assembly, 131-support rod, 132-adjustment rod, 133-slider, 134-first adjusting screw, 140-mounting plate, 141-guide groove, 150-partition, 151-oil leakage hole, 160-support plate, 170-adjustment block, 180-clamping screw, 190-oil scraping assembly, 191-second adjusting screw, 192-limiting nut, 193-connecting plate, 194-brush, 210-vibration sensor, 220-controller, 230-liquid level sensor, 240-pitch bearing.

[0023] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0025] It should be noted that all directional indications in the embodiments of the present application (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0026] In this application, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0027] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present application, 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 the field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0028] Example

[0029] Reference Figure 1-Figure 3The present embodiment provides a wind turbine pitch lubrication and oiling device, including an oil tank 110, an oiling assembly 120 is arranged on the oil tank 110, an adjusting assembly 130 is arranged at the bottom of the oil tank 110, and a mounting plate 140 is connected to the bottom of the adjusting assembly 130; wherein the adjusting assembly 130 includes a support rod 131 fixedly connected to the mounting plate 140, the other end of the support rod 131 is hinged to the bottom of the oil tank 110, an adjusting rod 132 is also hinged to the bottom of the oil tank 110, a slider 133 is hinged to the bottom of the adjusting rod 132, a guide groove 141 cooperating with the slider 133 is opened at the top of the mounting plate 140, a first adjusting screw 134 is movably connected to one side of the slider 133, a section of the first adjusting screw 134 is located in the guide groove 141, and the other section of the first adjusting screw 134 is threaded through the side wall of the mounting plate 140.

[0030] In this embodiment, the oil tank 110 is supported on the mounting plate 140 by the adjustment assembly 130. The mounting plate 140 is first installed and fixed on the mounting position of other accessories reserved near the pitch bearing 240. According to the relative position relationship between the position of the lubricated part of the pitch bearing 240 and the oil tank 110, the first adjusting screw 134 is rotated to be screwed into or out of the guide groove 141, thereby pushing or pulling the slider 133 to slide linearly in the guide groove 141, so that the adjustment rod 132 is rotated to drive the oil tank 110 to rotate. 0 is rotated along the top of the support rod 131 to adjust the inclination angle of the oil tank 110, so that the oil outlet of the oil injection assembly 120 can be aligned with the part of the pitch bearing 240 that needs lubrication. Therefore, in this embodiment, the mounting plate 140 and the oil tank 110 are separately arranged, and the oil tank 110 is adjusted to correspond to the part of the pitch bearing 240 that needs lubrication through the adjustment assembly 130 that can adjust the inclination angle of the oil tank 110, so that it can be applied to the lubrication of pitch bearings 240 with various mounting structures, thereby improving versatility, having a wide range of applications, and meeting mass production requirements.

[0031] As an optional embodiment, the top of the oil tank 110 is open, and a partition 150 is arranged inside the oil tank 110. The partition 150 divides the interior of the oil tank 110 into an oil chamber 111 and an oil return chamber 112 located above the oil chamber 111. A plurality of oil leakage holes 151 are opened on the partition 150. Support plates 160 are arranged on two opposite sides of the top of the oil tank 110, and the support plates 160 are used to install the oil filling assembly 120.

[0032] In this embodiment, during oil lubrication, the oil injection assembly 120 between the support plates 160 is respectively aligned with the lubrication part of the pitch bearing 240. At this time, a part of the bottom of the pitch bearing 240 is located between the two support plates 160, and the lubrication part of the pitch bearing 240 is located above the oil return chamber 112. When the pitch bearing 240 is oiled through the oil injection assembly 12, part of the excess lubricating oil adhering to the surface of the pitch bearing 240 can drip onto the partition 150 of the oil return chamber 112 and then drip into the oil chamber 111 below from the oil leakage hole 151, thereby facilitating the recycling and reuse of the lubricating oil and reducing waste.

[0033] As an optional embodiment, the vertical cross-section of the partition 150 is a concave arc, and the oil leakage holes 151 are concentrated in the middle of the bottom of the partition 150, so that the recovered lubricating oil is concentrated from the middle of the bottom of the partition 150 to leak into the oil chamber 111 below.

[0034] As an optional embodiment, the oil filling assembly 120 includes an oil pump 121 connected to the bottom of the oil chamber 111, the oil pump 121 is connected to the main oil pipe 122, the main oil pipe 122 is connected to the oil distribution box 123 arranged on the outer wall of the oil tank 110, the oil distribution box 123 is connected to multiple oil distribution pipes 124, at least one oil distribution pipe 124 is arranged through the two support plates 160, and the ends of the oil distribution pipes 124 on the two support plates 160 that are close to each other are provided with nozzles 125.

[0035] In this embodiment, when filling oil, the lubricating oil in the oil chamber 111 is pumped to the main oil pipe 122 through the oil pump 121, and then the lubricating oil is circulated to each oil distribution pipe 124 through the oil distribution box 123, and finally sprayed out from the corresponding nozzle 125, thereby simultaneously filling oil and lubricating the lubrication parts on both sides of the variable pitch bearing 240 (i.e., the rotating gap between the inner ring and the outer ring).

[0036] As an optional embodiment, an adjustment block 170 is movably provided in both support plates 160, and at least one oil distribution pipe 124 is connected through the adjustment block 170, and the oil distribution pipe 124 is a soft pipe. The tops of both support plates 160 are threadedly connected with a clamping screw 180, and the clamping screw 180 is used to clamp the top of the adjustment block 170.

[0037] In this embodiment, the adjustment block 170 can slide back and forth to adjust the distance between the nozzle 125 and the end face of the pitch bearing 240, which can be applied to the assembly of pitch bearings 240 of different thicknesses, further improving the versatility. Then, the clamping screw 180 is screwed in to clamp the adjustment block 170 to prevent the adjustment block 170 from shaking.

[0038] As an optional embodiment, an oil scraper assembly 190 is provided on both support plates 160, and the oil scraper assembly 190 is used to contact the lubricated part of the pitch bearing 240. The oil scraper assembly 190 includes a second adjusting screw 191 threadedly penetrating the support plate 160, and a limiting nut 192 located on the inner side of the support plate 160 is threadedly sleeved on the second adjusting screw 191, and a connecting plate 193 is connected to one end of the two second adjusting screws 191 close to each other, and a plurality of bristles 194 are provided on one side of the two connecting plates 193 close to each other, and the bristles 194 are used to contact the lubricated part of the pitch bearing 240.

[0039] In the present embodiment, since the pitch bearing 240 is in a rotating state, the excess lubricating oil sprayed on the end face of the pitch bearing 240 may rotate therewith and is difficult to automatically drip into the oil return chamber 112. Therefore, by setting the bristles 194 to contact the lubrication part of the end face of the pitch bearing 240, the excess lubricating oil on the end face of the pitch bearing 240 can be actively scraped off after oil lubrication. When more lubricating oil is adsorbed on the bristles 194, it can automatically drip into the oil return chamber 112, thereby improving the recovery rate. At the same time, the bristles 194 can be adjusted to contact with the pitch bearing 240 through the second adjusting screw 191, so that it can be suitable for pitch bearings 240 of different thicknesses, further improving the versatility.

[0040] As an optional embodiment, the connecting plate 193 is connected to a vibration sensor 210 through a wire. The vibration sensor 210 is arranged on the outside of the support plate 160. The vibration sensor 210 is electrically connected to a controller 220. The controller 220 is electrically connected to the oil pump 121. When the pitch bearing 240 is running, it has a certain friction with the bristles 194, so that the connecting plate 193 has a certain vibration effect. Therefore, the vibration state of the connecting plate 193 can be sensed by the vibration sensor 210. When the vibration state is not sensed, it indicates that the pitch bearing 240 has stopped rotating. At this time, the controller 220 can control the oil pump 121 to stop running, thereby automatically stopping the oil injection, thereby realizing the synchronous operation of the rotation of the pitch bearing 240 and the oil injection.

[0041] It should be noted that the controller 220 may be a PLC controller of model S7-200, and the vibration sensor 210 is a prior art and will not be described in detail here.

[0042] As an optional embodiment, a liquid level sensor 230 is provided in the oil chamber 111, and the liquid level sensor 230 can detect whether the minimum liquid level is reached. If it is detected that the minimum liquid level is reached, an alarm message can be sent through an alarm to provide staff with instructions to replenish lubricating oil.

[0043] The above are only preferred embodiments of the present application, and are not intended to limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A wind turbine pitch lubrication and oiling device, characterized in that: It includes an oil tank, an oil filling assembly is arranged on the oil tank, an adjustment assembly is arranged at the bottom of the oil tank, and a mounting plate is connected to the bottom of the adjustment assembly; wherein, The adjusting assembly includes a support rod fixedly connected to the mounting plate, the other end of the support rod is hinged to the bottom of the oil tank, an adjusting rod is also hinged to the bottom of the oil tank, a slider is hinged to the bottom of the adjusting rod, a guide groove cooperating with the slider is provided on the top of the mounting plate, a first adjusting screw is movably connected to one side of the slider, a section of the first adjusting screw is located in the guide groove, and the other section of the first adjusting screw threads through the side wall of the mounting plate.

2. A wind turbine pitch lubrication and oiling device according to claim 1, characterized in that: The top of the oil tank is open, and a partition is arranged inside the oil tank. The partition divides the interior of the oil tank into an oil chamber and an oil return chamber located above the oil chamber. A plurality of oil leakage holes are opened on the partition. Support plates are arranged on two opposite sides of the top of the oil tank, and the support plates are used to install the oil filling assembly.

3. A wind turbine pitch lubrication and oiling device as claimed in claim 2, characterized in that: The vertical cross section of the partition is a concave arc shape.

4. A wind turbine pitch lubrication and oiling device as claimed in claim 2, characterized in that: The oil filling assembly includes an oil pump connected to the bottom of the oil chamber, the oil pump is connected to a main oil pipe, the main oil pipe is connected to an oil distribution box arranged on the outer wall of the oil tank, the oil distribution box is connected to a plurality of oil distribution pipes, at least one oil distribution pipe is arranged through each of the two support plates, and nozzles are arranged at the ends of the oil distribution pipes on the two support plates that are close to each other.

5. A wind turbine pitch lubrication and oiling device as claimed in claim 4, characterized in that: Adjustment blocks are movably provided in both support plates, and at least one oil distribution pipe is connected through the adjustment block, and the oil distribution pipe is a soft pipe.

6. A wind turbine pitch lubrication and oiling device as claimed in claim 5, characterized in that: The tops of the two support plates are both threadedly connected with clamping screws, and the clamping screws are used to clamp the tops of the adjustment blocks.

7. A wind turbine pitch lubrication and oiling device as claimed in claim 4, characterized in that: Oil scraping assemblies are arranged on the two support plates, and the oil scraping assemblies are used to contact the lubrication parts of the variable pitch bearing.

8. A wind turbine pitch lubrication and oiling device as claimed in claim 7, characterized in that: The oil scraper assembly includes a second adjusting screw threaded through the support plate, a threaded sleeve on the second adjusting screw is provided with a limit nut located on the inner side of the support plate, two ends of the second adjusting screws close to each other are connected to a connecting plate, and a plurality of bristles are provided on one side of the two connecting plates close to each other, and the bristles are used to contact the lubrication part of the variable pitch bearing.

9. A wind turbine pitch lubrication and oiling device as claimed in claim 8, characterized in that: The connecting plate is connected to a vibration sensor via a wire, the vibration sensor is arranged outside the supporting plate, the vibration sensor is electrically connected to a controller, and the controller is electrically connected to the oil pump.

10. A wind turbine pitch lubrication and oiling device as claimed in claim 2, characterized in that: A liquid level sensor is arranged in the oil chamber.

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