A wind turbine impeller lock anti-loosening device

Abstract

This utility model relates to the field of wind turbine technology, and in particular to a wind turbine impeller lock anti-loosening device, comprising: a bearing housing, a connecting assembly, a dovetail sleeve, a mounting rod, and an anti-rotation rod; a positioning pin is connected inside the bearing housing; the connecting assembly is connected to one end of the positioning pin and to the bearing housing; the connecting assembly includes a lead screw, a connecting seat, a retaining ring, a mounting bolt, and a magnetic rod; one end of the lead screw is connected to the connecting seat, the connecting seat is connected to the retaining ring, the retaining ring is connected to the mounting bolt and has through holes a on both sides, the through holes a and the magnetic rod are one-to-one, and one end of the lead screw is connected to a dovetail; the dovetail sleeve is connected to the lead screw through the dovetail; the outer wall of the dovetail sleeve is connected to the mounting rod, and the mounting rod is threadedly connected to the anti-rotation rod. The upper end of the anti-rotation rod is connected to the threaded rod, the threaded rod is threaded into the mounting hole, and the threaded rod can be rotated to adjust the length of the anti-rotation rod, conveniently increasing the stability and fit of the anti-loosening device with part of the frame, and improving the ease of use of the anti-loosening device.

Description

Technical Field

[0001] This utility model relates to the field of wind turbine technology, and in particular to a wind turbine impeller lock anti-loosening device. Background Technology

[0002] When wind turbine generators generate electricity, it is essential to ensure a constant output frequency. One approach is to maintain a constant generator speed, i.e., constant speed and constant frequency operation. Since the generator is driven by the wind turbine through a transmission device, this method undoubtedly requires a constant wind turbine speed, which can affect the wind energy conversion efficiency. Another approach is to allow the generator speed to vary with the wind speed, while using other methods to ensure a constant output frequency, i.e., variable speed constant frequency operation.

[0003] Chinese Patent CN210068394U discloses a wind turbine impeller lock anti-loosening device, including a bearing housing. The bearing housing has an oil inlet at its top, penetrating the top and communicating with the interior. The inner wall of the bearing housing has a mating groove. A pre-set hole is located to the right of the oil inlet and communicates with the interior of the bearing housing at its top. An oil cup is fixedly installed inside the oil inlet. A positioning pin is inserted inside the bearing housing, and a limit groove is formed at the top of the positioning pin. This wind turbine impeller lock anti-loosening device is not easily loosened and will not cause mechanical collisions or wear during rotation, thus preventing accidents. After the mechanical lock is engaged, a square tenon is fitted onto the square tenon of the screw rod. When the mechanical lock rotates slightly, the anti-rotation rod at the bottom of the square tenon contacts the wind turbine frame, receiving a reverse support force from the wind turbine frame to prevent the mechanical lock from continuing to rotate, thereby preventing the mechanical lock from automatically disengaging.

[0004] Existing anti-loosening devices for wind turbine impeller locks use anti-rotation rods that generate reverse support force through contact with the wind turbine frame to prevent loosening. However, the frame structure of different wind turbine models may vary, and the length of the anti-rotation rod is fixed, which may make it inconvenient to stably fit with some parts of the frame, resulting in a decrease in the anti-loosening effect and reducing the use of the anti-loosening device. Utility Model Content

[0005] To address the problems existing in the background technology, a wind turbine impeller lock anti-loosening device is proposed.

[0006] This utility model proposes a wind turbine impeller lock anti-loosening device, including: bearing seat, connecting component, round tenon sleeve, mounting rod and anti-rotation rod;

[0007] The bearing housing is internally connected with locating pins;

[0008] The connecting component is attached to one end of the locating pin and connected to the bearing housing;

[0009] The connecting components include a lead screw, a connecting seat, a retaining ring, mounting bolts, and a magnetic rod;

[0010] One end of the lead screw is connected to the connecting seat, the connecting seat is connected to the retaining ring, the retaining ring is connected to the mounting bolt and has through holes a on both sides, the through holes a correspond one-to-one with the magnet rod, and one end of the lead screw is connected to a round tenon.

[0011] The round tenon sleeve is connected to the threaded rod via a round tenon head;

[0012] The outer wall of the dovetail sleeve is connected to the mounting rod, and the mounting rod is threadedly connected to the anti-rotation rod.

[0013] Preferably, the bearing housing is provided with a pre-set hole, a limiting groove and an oil inlet, the oil inlet end of the oil inlet is connected to an oil cup, the upper end of the limiting groove is connected to a nut, and the inner wall of the bearing housing is provided with a mating groove.

[0014] Preferably, the oil inlet extends to the inner wall of the bearing housing for lubricating the positioning pin and the bearing housing; the other end of the limiting groove extends to the inner wall of the bearing housing and is connected to the positioning pin.

[0015] Preferably, one end of the positioning pin is provided with a slot, the inner wall of the slot is recessed and a reserved threaded hole is provided, and through holes b are provided on both sides of the slot, with ferromagnets connected to the inner wall of the through holes b.

[0016] Preferably, the connecting seat is connected to one end of the positioning pin, the retaining ring is connected in the retaining groove, and the mounting bolt and the reserved threaded hole are threadedly connected.

[0017] Through hole a and through hole b are one-to-one correspondences, and the magnetic rod is connected by ferromagnetic attraction.

[0018] Preferably, one end of the positioning pin is connected to the locking plate, the locking plate is connected to the bearing seat and can be detached, and a circular hole is provided at the center of the locking plate.

[0019] Preferably, the mounting rod is provided with a mounting hole, the inner wall of the mounting hole is provided with a threaded texture, the threaded texture is threaded to connect to the threaded rod, and the threaded rod is connected above the anti-rotation rod.

[0020] Compared with the prior art, the present invention has the following beneficial technical effects:

[0021] This utility model relates to a fixed-rotation rod connected to a threaded rod at its upper end. The threaded rod is threaded to fit a mounting hole, which is located inside the mounting rod. The length of the fixed-rotation rod can be adjusted by rotating the threaded rod, which facilitates the addition of an anti-loosening device and a stable connection with part of the frame, preventing a decrease in the anti-loosening effect and improving the usability of the anti-loosening device. The screw rod and positioning pin are connected by using threads and magnets for adsorption, which facilitates the operation and disassembly of the anti-loosening device components, improving the practicality of the wind turbine impeller lock anti-loosening device. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0023] Figure 2 This is a schematic diagram of folding scheme a in this utility model;

[0024] Figure 3 This is a schematic diagram of folding scheme b in this utility model.

[0025] Reference numerals in the attached drawings: 1. Bearing housing; 101. Oil cup; 102. Pre-set hole; 103. Locating pin; 104. Reserved threaded hole; 2. Locking plate; 3. Lead screw; 301. Connecting seat; 302. Snap ring; 303. Mounting bolt; 304. Magnet rod; 4. Dovetail sleeve; 5. Mounting rod; 6. Anti-rotation rod; 601. Threaded rod. Detailed Implementation

[0026] The specific embodiments of this disclosure will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit this disclosure.

[0027] Example 1

[0028] like Figure 1 - Figure 3 As shown, this utility model proposes a wind turbine impeller lock anti-loosening device, comprising: a bearing housing 1, a connecting assembly, a dovetail sleeve 4, a mounting rod 5, and an anti-rotation rod 6; a positioning pin 103 is connected inside the bearing housing 1; the connecting assembly is connected to one end of the positioning pin 103 and to the bearing housing 1; the connecting assembly includes a lead screw 3, a connecting seat 301, a retaining ring 302, a mounting bolt 303, and a magnetic rod 304; one end of the lead screw 3 is connected to the connecting seat 301, the connecting seat 301 is connected to the retaining ring 302, the retaining ring 302 is connected to the mounting bolt 303 and has through holes a on both sides, the through holes a and the magnetic rod 304 are one-to-one, and one end of the lead screw 3 is connected to a dovetail; the dovetail sleeve 4 is connected to the lead screw 3 through the dovetail; the outer wall of the dovetail sleeve 4 is connected to the mounting rod 5, and the mounting rod 5 is threadedly connected to the anti-rotation rod 6. The anti-rotation rod 6 has an adjustable length, which facilitates a stable and close connection between the anti-loosening device and part of the frame, avoiding a decrease in the anti-loosening effect and improving the practicality of the anti-loosening device.

[0029] To further explain, the locating pin 103 has a groove at one end, and a pre-drilled threaded hole 104 is recessed in the inner wall of the groove. Through holes b are provided on both sides of the groove, and ferromagnets are connected to the inner walls of the through holes b. By providing ferromagnets, the connection stability between the locating pin 103 and the lead screw 3 is increased.

[0030] To further explain, the mounting rod 5 is provided with a mounting hole, and the inner wall of the mounting hole is provided with a threaded texture. The threaded texture is connected to the threaded rod 601, which is connected above the anti-rotation rod 6. Through the threaded rotation of the threaded rod 601 and its connection with the mounting hole, the lead screw 3 and the locating pin 103 are connected at one end, which facilitates the anti-rotation rod 6 to prevent loosening.

[0031] Example 2

[0032] Such as 1 and Figure 3 As shown, the present invention proposes a wind turbine impeller lock anti-loosening device. Based on the above embodiments, this embodiment also details the specific components of the bearing housing 1 and the fitting method.

[0033] Further explanation: The bearing housing 1 is provided with a pre-set hole 102, a limiting groove, and an oil inlet. The oil inlet end of the oil inlet is connected to an oil cup 101, and the upper end of the limiting groove is connected to a nut. The inner wall of the bearing housing 1 is provided with a mating groove. The oil outlet end of the oil inlet extends to the inner wall of the bearing housing 1 for lubricating the positioning pin 103 and the bearing housing 1. The other end of the limiting groove extends to the inner wall of the bearing housing 1 and is connected to the positioning pin 103. The connecting components and usage of the bearing housing 1 adopt existing publicly available technology. Its specific structure and working principle have been standardized in the existing publicly available technology, so there is no need to elaborate on the details here. It should be emphasized that the connecting components of the bearing housing 1 are based on the existing publicly available technology. This allows for adjustments to the connection and usage of the lead screw 3 and positioning pin 103, and the dovetail sleeve 4 and anti-rotation rod 6 based on the existing technology. This facilitates the increase of directional support force on the wind turbine frame, allowing the mechanical lock to rotate and achieve the purpose of automatically disengaging the mechanical lock, thereby improving the efficiency of the wind turbine impeller lock anti-loosening device.

[0034] Further explanation: the connecting seat 301 is connected to one end of the positioning pin 103, the retaining ring 302 is connected to the retaining groove, and the mounting bolt 303 is threadedly connected to the reserved threaded hole 104; through holes a and b correspond one-to-one, and the magnetic rod 304 is connected by ferromagnetic attraction; one end of the positioning pin 103 is connected to the locking plate 2, and the locking plate 2 is connected to the bearing seat 1 and is detachably connected; a circular hole is provided at the center of the locking plate 2. The locking plate 2 and the bearing seat 1 are connected using flange bolts, and thus the locking plate 2 and the bearing seat 1 are respectively provided with threaded holes for flange bolts, facilitating the connection of the anti-loosening device components.

[0035] The working principle of this utility model is as follows: After the mechanical lock is locked in place, the anti-loosening device places the dowel 4 on the dowel on the screw rod 3. The dowel 4 is connected to the threaded rod 601 via the mounting rod 5. The threaded rod 601 drives the anti-rotation rod 6. When the mechanical lock rotates slightly, the anti-rotation rod 6 contacts the wind turbine frame and receives the reverse support force of the frame to prevent the mechanical lock from rotating, thus achieving the purpose of automatically disengaging the mechanical lock. This solves the problem of the wind turbine not being able to brake at high speeds. Furthermore, the screw rod 3, through the connecting seat 301, retaining ring 302, mounting bolt 303, and magnetic rod 304, and... One end of the positioning pin 103 is connected to the mounting bolt 303 through the thread and the reserved threaded hole 104. The mounting bolt 303 drives the retaining ring 302 to connect in the retaining groove. The retaining ring 302 drives the connecting seat 301 to connect to one end of the positioning pin 103. The connecting seat 301 drives the lead screw 3 to connect. Then, the through hole a and through hole b on the retaining ring 302 are aligned. The magnetic rod 304 is inserted into the through hole a and through hole b, so that one end of the magnetic rod 304 is connected to the through hole b by ferromagnetic attraction. This increases the connection between the lead screw 3 and the positioning pin 103 and improves the connection and cooperation of the components of the wind turbine impeller lock anti-loosening device.

[0036] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited thereto. Various changes can be made within the scope of knowledge possessed by those skilled in the art without departing from the spirit of the present invention.

Claims

1. A wind turbine impeller lock anti-loosening device, characterized in that, include: Bearing housing (1); Bearing housing (1) internal connection locating pin (103); A connecting component is attached to one end of the locating pin (103) and connected to the bearing housing (1); The connecting assembly includes a lead screw (3), a connecting seat (301), a retaining ring (302), a mounting bolt (303), and a magnetic rod (304). One end of the lead screw (3) is connected to the connecting seat (301), the connecting seat (301) is connected to the retaining ring (302), the retaining ring (302) is connected to the mounting bolt (303) and has through holes a on both sides, the through holes a and the magnet rod (304) correspond one to one, and one end of the lead screw (3) is connected to the round tenon; And a round tenon sleeve (4), which is connected by a round tenon and a threaded rod (3); The outer wall of the round tenon sleeve (4) is connected to the mounting rod (5), and the mounting rod (5) is threaded to the anti-rotation rod (6).

2. The wind turbine impeller lock anti-loosening device according to claim 1, characterized in that, The bearing housing (1) is provided with a pre-set hole (102), a limiting groove and an oil inlet. The oil inlet end of the oil inlet is connected to an oil cup (101), and the upper end of the limiting groove is connected to a nut. The inner wall of the bearing housing (1) is provided with a mating groove.

3. The wind turbine impeller lock anti-loosening device according to claim 2, characterized in that, The oil inlet extends to the inner wall of the bearing housing (1) for lubricating the positioning pin (103) and the bearing housing (1); the other end of the limiting groove extends to the inner wall of the bearing housing (1) and is connected to the positioning pin (103).

4. The wind turbine impeller lock anti-loosening device according to claim 3, characterized in that, The positioning pin (103) has a slot at one end, and a pre-reserved threaded hole (104) is provided in the recessed inner wall of the slot. Through holes b are provided on both sides of the slot, and ferromagnets are connected to the inner wall of the through holes b.

5. The wind turbine impeller lock anti-loosening device according to claim 4, characterized in that, The connecting seat (301) is connected to one end of the positioning pin (103), the retaining ring (302) is connected in the retaining groove, and the mounting bolt (303) and the reserved threaded hole (104) are threaded together. Through hole a and through hole b correspond one-to-one, and the magnetic rod (304) is connected by ferromagnetic adsorption.

6. The wind turbine impeller lock anti-loosening device according to claim 4, characterized in that, One end of the positioning pin (103) is connected to the locking plate (2), the locking plate (2) is connected to the bearing seat (1) and can be detachably connected, and a circular hole is provided in the center of the locking plate (2).

7. The wind turbine impeller lock anti-loosening device according to claim 1, characterized in that, The mounting rod (5) is provided with a mounting hole, and the inner wall of the mounting hole is provided with a thread texture. The thread texture is connected to the thread rod (601), and the thread rod (601) is connected above the anti-rotation rod (6).

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