Blade bolt operation and maintenance fastening device

Abstract

The utility model provides a blade bolt operation and maintenance fastening device, and belongs to the technical field of wind power blade operation and maintenance. The blade bolt operation and maintenance fastening device comprises a main body, a rotating head and a fixing shell are arranged on the main body, the rotating head is rotationally arranged in the fixing shell in a sleeved mode, a fastening mechanism is arranged in the fixing shell and comprises a rotating disc, a threaded hole and a fixing ring, the rotating disc is installed on the rear side of the rotating head, and the threaded hole is formed in the fixing ring. The rotating disc and the rotating head are fixedly connected through a fixing bolt. Through the arrangement of the fastening mechanism, when maintenance is needed, the threaded rod penetrates into the threaded hole and is rotated, so that the threaded rod and the threaded hole are fixed, the rotating head and the fan blades cannot rotate due to wind power, equipment and workers are prevented from being hurt, and compared with the prior art, the fixing device has the advantages that the fixing device is simple in structure and convenient to use. A locking device does not need to be additionally carried and installed, and the maintenance efficiency can be improved.

Description

Technical Field

[0001] This utility model relates to the field of wind turbine blade operation and maintenance technology, and more specifically, to a blade bolt operation and maintenance fastening device. Background Technology

[0002] Wind turbine blade maintenance is a series of maintenance and management tasks to ensure the normal operation of wind turbine blades. The maintenance cycle is generally divided into daily inspections, monthly inspections and annual inspections. The annual inspection is a comprehensive inspection that involves many items such as internal structure inspection and bolt tightness inspection.

[0003] When inspecting blades or entering the hub, it is necessary to lock the impeller and blades to ensure the safety of equipment and personnel. In the current technology, the internal gear ring on the blade bearing and the locking device carried by the staff are generally used for locking, which is very cumbersome and inconvenient to use. Utility Model Content

[0004] To overcome the above deficiencies, this utility model provides a blade bolt maintenance and fastening device that overcomes or at least partially solves the above technical problems.

[0005] This utility model is implemented as follows:

[0006] This utility model provides a blade bolt maintenance and fastening device, including a main body, on which a rotating head and a fixed shell are disposed. The rotating head is rotatably sleeved inside the fixed shell, and a fastening mechanism is disposed inside the fixed shell. The fastening mechanism includes...

[0007] A rotating disk is mounted on the rear side of a rotating head, and the rotating disk and the rotating head are fixedly connected by fixing bolts;

[0008] Threaded holes, two of which are provided, located on the left and right sides of the rotating disk;

[0009] A fixing ring is fixedly installed on the inner wall of the fixing shell. The fixing ring is sleeved on the outer side of the rotating disk. Two threaded rods are sleeved inside the fixing ring, and the threaded rods are threadedly connected to the threaded holes.

[0010] In a preferred embodiment, a fan blade is fixedly mounted on the surface of the rotating head, the rear side of the fixed shell is open, and fixed blocks are fixedly mounted on both the left and right sides of the fixed ring.

[0011] In a preferred embodiment, the fixing block has a through hole inside, the threaded rod is sleeved inside the through hole, and a movable bolt is fixedly installed on the side of the threaded rod away from the fixing ring.

[0012] In a preferred embodiment, a sleeve is slidably mounted inside the through hole, the threaded rod extends into the sleeve from the side away from the fixing ring, and the movable bolt is slidably sleeved inside the sleeve.

[0013] In a preferred embodiment, the surface of the movable bolt is provided with a first key tooth, and the interior of the sleeve is provided with a second key tooth, the first key tooth and the second key tooth being engaged and connected.

[0014] In a preferred embodiment, a movable rod is fixedly installed on the side of the sleeve away from the fixed ring, the movable rod extending to the outside of the through hole, and the central axes of the movable bolt, the sleeve, and the movable rod are on the same axis.

[0015] In a preferred embodiment, the surface of the movable rod is provided with a positioning mechanism, the positioning mechanism including a positioning bolt, a plurality of positioning bolts are provided, the positioning bolts are fixedly sleeved on the surface of the movable rod, and a plurality of first positioning holes are formed on the surface of the positioning bolts.

[0016] In a preferred embodiment, a positioning plate is fixedly installed on the side of the fixing block away from the fixing ring. The positioning plate has a second positioning hole that runs vertically through it, and a pin is slidably fitted between the first positioning hole and the second positioning hole.

[0017] The blade bolt maintenance and fastening device provided by this utility model has the following beneficial effects:

[0018] 1. By setting up a fastening mechanism, when maintenance is required, the threaded rod is inserted into the threaded hole and rotated to fix the threaded rod and the threaded hole together. This prevents the rotating head and fan blades from rotating due to wind force, avoiding injury to equipment and personnel. Compared with existing technologies, there is no need to carry and install additional locking devices, which helps to improve maintenance efficiency.

[0019] 2. By setting a positioning mechanism, when the threaded rod and the threaded hole are connected by threads, the sleeve has a certain amount of internal movement. The sleeve can slide freely a certain distance relative to the moving bolt. The moving sleeve drives the moving rod and the positioning bolt to move. Since each face of the positioning bolt has a first positioning hole, the worker finds the first positioning hole that coincides with the second positioning hole and inserts the pin, so that the moving bolt is positioned and cannot rotate. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the overall structure provided by an embodiment of the present utility model;

[0022] Figure 2 A structural schematic diagram of the rotating head and the fixed shell is provided for the embodiments of this utility model;

[0023] Figure 3 Exploded views of the fixing ring and fixing shell are provided for embodiments of this utility model;

[0024] Figure 4 A partial cross-sectional view of the fixing block is provided for an embodiment of this utility model.

[0025] In the diagram: 1. Main body; 2. Rotating head; 3. Fixed shell; 401. Rotating disk; 402. Fixing bolt; 403. Threaded hole; 404. Fixing ring; 405. Threaded rod; 406. Fan blade; 407. Fixing block; 408. Through hole; 409. Moving bolt; 410. Sleeve; 411. First key tooth; 412. Second key tooth; 413. Moving rod; 501. Positioning bolt; 502. First positioning hole; 503. Positioning plate; 504. Second positioning hole; 505. Pin. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0027] Example 1

[0028] Reference Figure 1-4This utility model provides a technical solution: a blade bolt maintenance and fastening device, including a main body 1, on which a rotating head 2 and a fixed shell 3 are provided. The rotating head 2 is rotatably sleeved inside the fixed shell 3. A fastening mechanism is provided inside the fixed shell 3. The fastening mechanism includes a rotating disk 401, threaded holes 403, and a fixing ring 404. The rotating disk 401 is installed on the rear side of the rotating head 2. The rotating disk 401 and the rotating head 2 are fixedly connected by fixing bolts 402. Two threaded holes 403 are provided, and the threaded holes 403 are formed in the rotating disk 401. On the left and right sides of the rotating head 2, a fixing ring 404 is fixedly installed on the inner wall of the fixing shell 3. The fixing ring 404 is sleeved on the outer side of the rotating disk 401. Two threaded rods 405 are sleeved inside the fixing ring 404. The threaded rods 405 and threaded holes 403 are threadedly connected. A fan blade 406 is fixedly installed on the surface of the rotating head 2. The rear side of the fixing shell 3 is open. Fixing blocks 407 are fixedly installed on both the left and right sides of the fixing ring 404. A through hole 408 is opened inside the fixing block 407. The threaded rod 405 is sleeved inside the through hole 408. A movable bolt 409 is fixedly installed on the side of rod 405 away from the fixed ring 404. Through a fastening mechanism, a rotating shaft is fixed to the rear of the rotating head 2 during actual use. The rotating shaft is connected to a power generation module, which is installed inside the fixed housing 3. When the main body 1 is installed outdoors, wind power will drive the wind blade 406 and the rotating head 2 to rotate through the tilt angle of the wind blade 406. When the wind blade 406 rotates, it will generate electricity using the power generation module inside the fixed housing 3. The generated electricity will be transmitted back to the power station via a cable. When maintenance is required, the threaded rod 409 can be moved... 5 penetrates into the interior of the threaded hole 403 and causes the threaded rod 405 to rotate. Through the threaded connection between the threaded rod 405 and the threaded hole 403, the threaded rod 405 and the threaded hole 403 are fixed together. Since the threaded hole 403 is opened on the rotating disk 401 and the rotating disk 401 is fixedly connected to the rotating head 2, the rotating head 2 and the fan blade 406 will not rotate due to wind force, thus avoiding injury to equipment and personnel. Compared with the existing technology, there is no need to carry and install additional locking devices, which helps to improve maintenance efficiency.

[0029] Reference Figure 1-4A sleeve 410 is slidably installed inside the through hole 408. The threaded rod 405 extends into the sleeve 410 from the side away from the fixed ring 404. A movable pin 409 is slidably sleeved inside the sleeve 410. A first key tooth 411 is provided on the surface of the movable pin 409, and a second key tooth 412 is provided inside the sleeve 410. The first key tooth 411 and the second key tooth 412 are meshed together. A movable rod 413 is fixedly installed on the side of the sleeve 410 away from the fixed ring 404. The movable rod 413 extends into the outside of the through hole 408. The central axes of the movable pin 409, the sleeve 410, and the movable rod 413 are on the same axis. By setting the first key tooth 411 and the second key tooth 412, when the operator rotates the threaded rod 405 into the threaded hole 403, he only needs to rotate the sleeve 410. Through the meshing of the first key tooth 411 and the second key tooth 412, the movable pin 409 drives the threaded hole 403 to rotate.

[0030] Example 2

[0031] In the above embodiment, the fastening mechanism prevents the rotating head 2 from rotating when the operator is performing maintenance. However, in order to position the sleeve 410, multiple positioning holes are often required on the sleeve 410. In order to position the positioning holes by the pin 505, the rotation angle of the sleeve 410 is usually limited. That is, the sleeve 410 needs to be rotated to a preset angle before it can be positioned by the pin 505, which is inconvenient for operators and needs to be improved.

[0032] Reference Figure 1-4 The difference between this embodiment and the first embodiment described above is that a positioning mechanism is provided on the surface of the moving rod 413. The positioning mechanism includes a plurality of positioning bolts 501, which are fixedly sleeved on the surface of the moving rod 413. A plurality of first positioning holes 502 are formed on the surface of the positioning bolts 501. A positioning plate 503 is fixedly installed on the side of the fixing block 407 away from the fixing ring 404. A second positioning hole 504 is formed on the positioning plate 503, which is vertically penetrating. A pin 5 is slidably sleeved between the first positioning hole 502 and the second positioning hole 504. 05. By setting a positioning mechanism, when the threaded rod 405 and the threaded hole 403 are threadedly connected, the sleeve 410 has a certain amount of internal travel, and the sleeve 410 can slide freely a certain distance relative to the movable bolt 409. The movable sleeve 410 drives the movable rod 413 and the positioning bolt 501 to move. Since each surface of the positioning bolt 501 has a first positioning hole 502, the operator finds the first positioning hole 502 that coincides with the second positioning hole 504 and inserts the pin 505, thereby positioning the movable bolt 409 and preventing it from rotating.

[0033] Specifically, the working process or principle of the blade bolt maintenance and fastening device is as follows: During use, when maintenance is required, the threaded rod 405 is inserted into the threaded hole 403. The sleeve 410 is rotated, and through the meshing of the first key tooth 411 and the second key tooth 412, the movable bolt 409 drives the threaded hole 403 to rotate. The threaded connection between the threaded rod 405 and the threaded hole 403 fixes them together. Since the threaded hole 403 is located on the rotating disk 401, and the rotating disk 401 and the rotating head 2 are fixed... The fixed connection prevents the rotating head 2 and the fan blade 406 from rotating due to wind force. At this time, since the sleeve 410 has a certain travel inside, the sleeve 410 can slide freely a certain distance relative to the moving bolt 409. The moving sleeve 410 drives the moving rod 413 and the positioning bolt 501 to move. Since each surface of the positioning bolt 501 has a first positioning hole 502, the operator finds the first positioning hole 502 that coincides with the second positioning hole 504 and inserts the pin 505, thereby positioning the moving bolt 409 and preventing it from rotating.

Claims

1. A blade bolt maintenance and fastening device, comprising a main body (1), wherein a rotating head (2) and a fixed shell (3) are provided on the main body (1), and the rotating head (2) is rotatably sleeved inside the fixed shell (3), characterized in that: The fixed shell (3) is provided with a fastening mechanism inside, the fastening mechanism including, A rotating disk (401) is mounted on the rear side of the rotating head (2), and the rotating disk (401) and the rotating head (2) are fixedly connected by fixing bolts (402); Threaded holes (403), two threaded holes (403) are provided, and the threaded holes (403) are opened on the left and right sides of the rotating disk (401); A fixing ring (404) is fixedly installed on the inner wall of the fixing shell (3). The fixing ring (404) is sleeved on the outer side of the rotating disk (401). Two threaded rods (405) are sleeved inside the fixing ring (404). The threaded rods (405) are threadedly connected to the threaded hole (403).

2. The blade bolt maintenance and fastening device according to claim 1, characterized in that, The rotating head (2) is fixedly mounted with a fan blade (406), the rear side of the fixed shell (3) is open, and the left and right sides of the fixed ring (404) are fixedly mounted with fixing blocks (407).

3. The blade bolt maintenance and fastening device according to claim 2, characterized in that, The fixed block (407) has a through hole (408) inside, and the threaded rod (405) is sleeved inside the through hole (408). A movable bolt (409) is fixedly installed on the side of the threaded rod (405) away from the fixed ring (404).

4. The blade bolt maintenance and fastening device according to claim 3, characterized in that, A sleeve (410) is slidably installed inside the through hole (408), and the threaded rod (405) extends into the sleeve (410) from the side away from the fixing ring (404). The movable bolt (409) is slidably sleeved inside the sleeve (410).

5. The blade bolt maintenance and fastening device according to claim 4, characterized in that, The surface of the movable bolt (409) is provided with a first key tooth (411), and the inside of the sleeve (410) is provided with a second key tooth (412). The first key tooth (411) and the second key tooth (412) are engaged and connected.

6. The blade bolt maintenance and fastening device according to claim 4, characterized in that, A movable rod (413) is fixedly installed on the side of the sleeve (410) away from the fixed ring (404). The movable rod (413) extends through to the outside of the through hole (408). The central axes of the movable bolt (409), the sleeve (410) and the movable rod (413) are on the same axis.

7. The blade bolt maintenance and fastening device according to claim 6, characterized in that, The surface of the movable rod (413) is provided with a positioning mechanism, which includes positioning bolts (501). Several positioning bolts (501) are provided. The positioning bolts (501) are fixedly sleeved on the surface of the movable rod (413). Several first positioning holes (502) are opened on the surface of the positioning bolts (501).

8. The blade bolt maintenance and fastening device according to claim 7, characterized in that, A positioning plate (503) is fixedly installed on the side of the fixing block (407) away from the fixing ring (404). A second positioning hole (504) is provided on the positioning plate (503) and the first positioning hole (502) and the second positioning hole (504) are slidably sleeved between them.

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