Grease cleaning device for flange surface of yaw large gear ring of wind turbine generator

Abstract

The utility model relates to the technical field of wind power generation, in particular to a wind turbine generator yaw large gear ring flange face grease cleaning device which comprises a support used for bearing a sensor, and cleaning mechanisms are arranged on the two sides of the support. The cleaning mechanism comprises a scraping plate and a connecting assembly, and the scraping plate is connected to the support through the connecting assembly. Due to the design that the two cleaning mechanisms are additionally arranged on the two sides of the support, redundant grease on the surface of a large gear ring flange can be automatically cleaned when a draught fan of a wind turbine generator set automatically yaws, the reliability and stability of operation of the draught fan are obviously enhanced, and the wind turbine generator set has the advantages of being simple in structure and convenient to use. According to the design, the operation burden of personnel is effectively relieved, the operation cost is reduced, the labor intensity is greatly reduced, and the waste oil cleaning work becomes more efficient and thorough. The cleaning device is low in manufacturing cost, simple in structure and convenient to use.

Description

TECHNICAL FIELD

[0001] The utility model relates to wind power generation technical field especially relates to a wind turbine yawing gear ring flange surface grease cleaning device. BACKGROUND

[0002] The existing fan yawing system can perceive the wind direction signal of the wind field, and through the accurate control of the turning of the fan body and the wind wheel, ensures that the fan blade always faces the direction of the wind.

[0003] In the mechanical structure of the yawing system, the cabin is connected with the yawing gear ring installed on the tower drum through the yawing driver. In order to reduce the mechanical wear, the yawing automatic lubricating system will give the yawing reducer gear and the yawing gear ring through the lubricating pulley every predetermined time. However, this lubricating mode has certain problems.

[0004] Specifically, a set of photoelectric induction sensor is installed on the upper side of the yawing gear ring, which is used to judge the yawing direction of the cabin and the cabin rotation speed monitoring. When the lubricating grease on the yawing gear ring is too much, the excessive grease will adhere to the surface of the photoelectric induction sensor. Since the distance between the photoelectric induction sensor and the gear ring is only 3mm, the grease will contaminate the sensor, resulting in the decrease of the sensitivity of the sensor or even complete failure, which further causes the false failure of the fan.

[0005] Based on this, in order to clean the flange surface of the gear ring and avoid the contamination of the sensor by the grease, we propose a wind turbine yawing gear ring flange surface grease cleaning device. UTILITY MODEL CONTENTS

[0006] The utility model discloses a wind turbine yawing gear ring flange surface grease cleaning device, which can clean the flange surface of the gear ring and avoid the contamination of the sensor by the excessive grease.

[0007] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0008] A wind turbine yawing gear ring flange surface grease cleaning device is designed, which includes a bracket for bearing the sensor, and a cleaning mechanism is arranged on both sides of the bracket.

[0009] The cleaning mechanism includes a scraper and a connecting assembly, and the scraper is connected to the bracket through the connecting assembly.

[0010] The upper end of the scraper is further provided with an arc-shaped guide piece.

[0011] Further, the connecting assembly includes a sleeve fixed on the bracket, and a plug rod is movably inserted into the sleeve.

[0012] Wherein the end face of the scraper has a hole matched with the inserting rod, and the bottom face of the scraper is in contact with the top of the sleeve.

[0013] Further, a blind hole is formed in the inner side of the inserting rod, and a driving rod is movably inserted into the blind hole through a spring;

[0014] A conical surface is formed in the bottom of the driving rod, and a limiting bead is movably inserted into the two sides of the inserting rod, and the end face of the limiting bead is in contact with the conical surface.

[0015] Further, a positioning hole is formed in the end face of the sleeve, and the limiting bead is clamped with the positioning hole.

[0016] Further, an elastic ring is sleeved on the outer side of the inserting rod, and a nut is threadedly connected, and the nut is in contact with the elastic ring.

[0017] Further, a plurality of deformation grooves are formed in the outer circumferential surface of the elastic ring, and two gaskets are sleeved on the outer side of the inserting rod and located at the two ends of the elastic ring.

[0018] Further, the arc-shaped guide piece extends upward along the bottom of the scraper, and a notch is formed in the tail end of the arc-shaped guide piece.

[0019] The wind turbine yawing gear flange surface grease cleaning device has the advantages that: the two cleaning mechanisms are added on the two sides of the bracket, so that the wind turbine can automatically clean the excess grease on the flange surface of the gear during automatic yawing, the reliability and stability of the wind turbine are significantly improved, the design not only reduces the labor burden and operation cost, but also greatly reduces the labor intensity, and the waste oil cleaning work is more efficient and complete. The cleaning device has low manufacturing cost, simple structure and convenient use. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is the front view of the utility model;

[0021] Figure 2 It is the perspective view of the utility model;

[0022] Figure 3 It is the connection assembly structure schematic view of the utility model;

[0023] Figure 4 It is the driving rod structure schematic view of the utility model.

[0024] In the figure: 1, support; 2, cleaning mechanism; 21, scraper; 22, connecting assembly; 221, sleeve; 222, inserting rod; 223, spring; 224, driving rod; 225, conical surface; 226, limiting bead; 227, positioning hole; 23, arc-shaped guide piece; 24, elastic ring; 241, deformation groove; 25, nut; 26, gasket; 27, notch; 3, big gear ring. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments.

[0026] Referring to Figures 1-4 For an embodiment of the utility model, it discloses a kind of wind turbine yawing big gear ring flange surface grease cleaning devices, specifically the cleaning device includes the support 1 for bearing sensor, the support 1 is installed in cabin inner side, above-mentioned sensor and big gear ring 3 are oppositely arranged, cleaning mechanism 2 is arranged on the both sides of the support 1;

[0027] The cleaning mechanism 2 includes scraper 21 and connecting assembly 22, the scraper 21 is connected on the support 1 by connecting assembly 22;

[0028] Wherein the upper end of the scraper 21 also has an arc-shaped guide piece 23, the arc-shaped guide piece 23 is designed to guide the excess grease scraped to discharge, to avoid grease into the inside of support 1.

[0029] As Figure 2 Indicated, the distance between the detection end of the sensor and big gear ring 3 in the utility model is H1, H1 in the embodiment is set to 3mm, the spacing between the bottom end of the scraper 21 and the big gear ring 3 is H2, H2 in the embodiment is set to 0.5mm, by adopting 0.5mm spacing design, it can be guaranteed to clear the excess grease on the flange surface of big gear ring 3, to avoid sensor from being contaminated, leading to the sensitivity of sensor to decline or even malfunction and other problems.

[0030] In some embodiments, the connecting assembly 22 in the utility model includes sleeve 221 fixed on the support 1, inserting rod 222 is movably inserted in the sleeve 221;

[0031] Wherein the end face of the scraper 21 has a hole matched with the inserting rod 222, and the bottom surface of the scraper 21 abuts against the top of the sleeve 221.

[0032] Of course, in order to realize the connecting and fixing of the inserting rod 222 and the sleeve 221, the inner side of the inserting rod 222 is provided with a blind hole, and a driving rod 224 is movably inserted into the blind hole through a spring 223;

[0033] The bottom of the driving rod 224 is provided with a conical surface 225, and the two sides of the inserting rod 222 are movably inserted with limiting beads 226. Of course, the outer side of the inserting rod 222 is provided with a through hole, and the diameter of the through hole is smaller than the diameter of the limiting beads 226, so as to avoid the falling of the limiting beads 226. The end surface of the limiting beads 226 is in contact with the conical surface 225.

[0034] On the basis of the above embodiment, the end surface of the sleeve 221 is further provided with a positioning hole 227, and the limiting beads 226 are clamped with the positioning hole 227.

[0035] That is to say, in the embodiment, by movably inserting a driving rod 224 into the inserting rod 222, when the inserting rod 222 is inserted and connected with the sleeve 221, the inserting rod 222 moves upward under the pushing of the spring 223. At this time, the conical surface 225 abuts against the limiting beads 226 to move outward in the radial direction. The limiting beads 226 move outward through the inserting rod 222 until they are clamped in the positioning hole 227 on the side of the sleeve 221, so as to complete the connection and locking of the sleeve 221 and the inserting rod 222. After that, the scraper 21 can be inserted on the inserting rod 222 and further locked.

[0036] Further, the outer side of the inserting rod 222 is sleeved with an elastic ring 24 and a nut 25 is threadedly connected, and the nut 25 abuts against the upper side of the elastic ring 24.

[0037] In addition, the outer circumferential surface of the elastic ring 24 is provided with a plurality of deformation grooves 241, and the outer side of the inserting rod 222 is sleeved with two gaskets 26 which are respectively located at the two ends of the elastic ring 24.

[0038] That is to say, in the embodiment, by providing the deformation grooves 241 on the outer side of the elastic ring 24, the elastic ring 24 has a certain deformation amount. When the scraper 21 is fixed, the elastic ring 24 can be extruded through the threadedly connected nut 25 to complete the fixation of the scraper 21, which is simple and convenient. At the same time, the elastic ring 24 can provide a certain counter thrust when the inserting rod 222 is disassembled, so as to achieve the effect of convenient disassembly of the inserting rod 222.

[0039] It should be noted that in order to conveniently discharge the scraped grease, the arc-shaped guide piece 23 in the embodiment extends upward along the bottom of the scraper 21, and the scraper 21 is provided with a notch 27 at the tail end of the arc-shaped guide piece 23, and the notch 27 is designed for conveniently discharging the grease. Of course, in further embodiments, a collecting groove can also be installed at the bottom of the large gear ring 3 inside the cabin, which is used to collect the scraped excess grease, so as to be recycled.

[0040] In summary, in the utility model, by increasing two cleaning mechanisms 2 on both sides of the support 1, the excess grease on the flange surface of the large gear ring 3 of the wind turbine generator set can be automatically cleaned when the wind turbine automatically deviates, and the reliability and stability of the wind turbine operation are significantly enhanced. The design not only effectively reduces the burden of personnel operation and operation cost, but also greatly reduces the labor intensity, so that the waste oil cleaning work becomes more efficient and complete. The cleaning device has low manufacturing cost, simple structure and convenient use.

[0041] The above is only a preferred specific embodiment of the utility model, but the protection scope of the utility model is not limited to this. Any person skilled in the art can make equivalent replacement or change according to the technical scheme and the utility model concept of the utility model within the technical range disclosed by the utility model, which should be covered in the protection scope of the utility model.

Claims

1. A grease cleaning device for the flange surface of the yaw gear ring of a wind turbine, comprising a bracket (1) for supporting a sensor, characterized in that: Cleaning mechanisms (2) are provided on both sides of the bracket (1); The cleaning mechanism (2) includes a scraper (21) and a connecting assembly (22), wherein the scraper (21) is connected to the bracket (1) via the connecting assembly (22); The scraper (21) also has an arc-shaped guide plate (23) at its upper end.

2. The grease cleaning device for the flange surface of the yaw gear ring of a wind turbine according to claim 1, characterized in that: The connecting assembly (22) includes a sleeve (221) fixed on the bracket (1), and a plug rod (222) is movably inserted into the sleeve (221); The scraper (21) has a hole on its end face that is adapted to the insertion rod (222), and the bottom surface of the scraper (21) abuts against the top of the sleeve (221).

3. The grease cleaning device for the flange surface of the yaw gear ring of a wind turbine according to claim 2, characterized in that: A blind hole is provided on the inner side of the insertion rod (222), and a drive rod (224) is movably inserted into the blind hole by a spring (223); The bottom of the drive rod (224) has a frustum surface (225), and both sides of the insertion rod (222) are movably inserted with limit beads (226), and the end face of the limit bead (226) contacts the frustum surface (225).

4. The grease cleaning device for the flange surface of the yaw gear ring of a wind turbine according to claim 3, characterized in that: A positioning hole (227) is also provided on the end face of the sleeve (221), and the limiting bead (226) is engaged with the positioning hole (227).

5. A grease cleaning device for the flange surface of the yaw gear ring of a wind turbine according to claim 2, characterized in that: The outer side of the insertion rod (222) is fitted with an elastic ring (24) and a nut (25) is threadedly connected thereto, with the nut (25) abutting against the upper part of the elastic ring (24).

6. A grease cleaning device for the flange surface of the yaw gear ring of a wind turbine according to claim 5, characterized in that: The outer circumferential surface of the elastic ring (24) is provided with a plurality of deformation grooves (241) spaced apart, and two gaskets (26) are respectively located at both ends of the elastic ring (24) on the outside of the insertion rod (222).

7. A grease cleaning device for the flange surface of the yaw gear ring of a wind turbine according to claim 5, characterized in that: The arc-shaped guide plate (23) extends upward along the bottom of the scraper (21), and the scraper (21) has a notch (27) at the tail end of the arc-shaped guide plate (23).

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