Fan impeller locking device

Abstract

The utility model relates to the technical field of wind power generation equipment, in particular to a fan impeller locking device which comprises a hydraulic pump, the hydraulic pump is connected with an oil cylinder through an oil pipe, external threads are arranged at the upper end of a telescopic rod of the oil cylinder, a flange plate at the upper end of the oil cylinder is connected with a connecting piece assembly, and a locking pin is inserted in the connecting assembly. According to the fan impeller locking device, the oil cylinder, the connecting assembly, the locking pin, the oil pump and the oil pipe are arranged, the oil cylinder and the locking pin which are connected together can be installed on a wind turbine generator through the connecting assembly, and then the oil cylinder can push the locking pin into a fan impeller locking hole for locking by operating the oil pump; the problems that time and labor are wasted and efficiency is low when the impeller of an old wind turbine generator which is built before and is on service needs to be locked by rotating a hand wheel are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of wind power generation equipment, in particular to a fan impeller locking device. Background Art

[0002] A wind turbine is an electrical device that converts wind energy into mechanical work, which in turn drives the rotor to rotate, ultimately outputting alternating current. A wind turbine generally consists of components such as a rotor, generator, yaw mechanism, tower, speed limiter, and energy storage device. The rotor locking system is a crucial component of a wind turbine, used to lock the rotor during operation and maintenance to ensure worker safety. However, the rotor locking systems of some previously constructed wind turbines currently in service still lock the rotor by manually rotating the rotor, which in turn drives a screw that inserts a pin into the lock hole of the rotor locking disc.

[0003] For example, through searching, the publication number is: CN109441737A, which is a manual locking device and method for a wind turbine rotor, including a pin shaft for cooperating with a wind rotor lock disk, one end of the pin shaft is provided with a threaded hole adapted to a threaded rod, and the threaded rod is connected to a manual operating part; the manual operating part drives the threaded rod to rotate, and the spiral transmission between the threaded rod and the threaded hole drives the pin shaft to move linearly, thereby realizing the braking of the wind rotor lock disk by the pin shaft; a detachable locking pin is provided on one side of the manual operating part, and when the pin shaft is in the state of braking the wind rotor lock disk, the locking pin prevents the pin shaft from reversing after being subjected to force.

[0004] Although the above-mentioned manual locking device for the fan impeller can lock the impeller, the operation process is time-consuming and labor-intensive, and the efficiency is low. Utility Model Content

[0005] The utility model is disclosed to solve the problem that the operation process of the manual locking device of the wind turbine rotor in the prior art mentioned in the background art is time-consuming, labor-intensive and inefficient.

[0006] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0007] A fan impeller locking device comprises a hydraulic pump, the hydraulic pump is connected to an oil cylinder via an oil pipe, the upper end of the telescopic rod of the oil cylinder is provided with an external thread, the upper end flange of the oil cylinder is connected to a connector assembly, and a locking pin is inserted into the connector assembly;

[0008] Specifically, the connecting assembly includes a lower flange connected to the flange, an upper flange is provided above the lower flange, the lower flange and the upper flange are fixedly connected by a connecting pipe, and a locking through hole is opened on the side wall of the connecting pipe;

[0009] Specifically, the locking pin includes a pin body, the lower end of the pin body is fixedly connected to a connecting column, the lower end of the connecting column is provided with a plug hole that can be connected to the external thread of the upper end of the telescopic rod of the oil cylinder, and the side wall of the connecting column is rotatably connected to a locking screw.

[0010] Furthermore, a through hole communicating with the interior of the plug hole is opened on the side wall of the connecting column, the locking screw is rotatably inserted in the through hole, and an internal thread adapted to the locking screw is provided in the through hole.

[0011] Furthermore, bolt holes a and bolt holes b are respectively provided on the flange and the lower flange, and the flange and the lower flange are connected by screws inserted into the bolt holes a and the bolt holes b.

[0012] Furthermore, the upper and lower edges of the pin body are respectively provided with an upper chamfer and a lower chamfer.

[0013] Furthermore, a spiral groove is provided on the outer surface of the pin body.

[0014] Furthermore, the plug hole is provided with an internal thread that matches the external thread.

[0015] Furthermore, the upper flange is provided with a connection hole for installation with a wind turbine generator set.

[0016] As can be seen from the above, the fan impeller locking device provided by the present invention has the following improvements and advantages compared with the prior art:

[0017] 1. This fan impeller locking device is equipped with an oil cylinder, a connecting assembly, a locking pin, an oil pump, and an oil pipe. The oil cylinder and the locking pin connected together can be installed on the wind turbine set through the connecting assembly, and then the oil pump can be operated to enable the oil cylinder to push the pin into the lock hole of the fan impeller to lock it, thereby solving the problem that the old wind turbine sets built in the past and in service need to lock the impeller by turning the hand wheel, which is time-consuming, labor-intensive and inefficient. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 The figure is a schematic diagram of the overall structure of a fan impeller locking device proposed by the utility model.

[0019] Figure 2 This is a schematic diagram of the overall structure of the pin of a fan impeller locking device proposed in this utility model Figure 1 .

[0020] Figure 3 This is a schematic diagram of the overall structure of the pin of a fan impeller locking device proposed in this utility model Figure 2 .

[0021] Figure 4A fan impeller locking device proposed by the utility model Figure 3 A is an enlarged structural diagram of FIG.

[0022] Figure 5 This is a structural schematic diagram of the oil cylinder and connecting components of a fan impeller locking device proposed by the utility model.

[0023] Figure 6 This is a schematic diagram of the disassembled structure of the oil cylinder and connecting components of a fan impeller locking device proposed by the utility model.

[0024] In the figure: 1. Hydraulic pump; 201. External thread; 202. Flange; 2021. Bolt hole a; 3. Connecting assembly; 301. Lower flange; 3011. Bolt hole b; 302. Upper flange; 303. Connecting pipe; 304. Locking through hole; 4. Locking pin; 401. Pin body; 4011. Upper chamfer; 4012. Lower chamfer; 4013. Spiral groove; 402. Connecting column; 4021. Through hole; 403. Connecting hole; 404. Locking screw; 5. Screw; 6. Oil pipe DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0026] Reference Figures 1 to 6 , a fan impeller locking device includes a hydraulic pump 1, which is connected to a cylinder 2 through an oil pipe 6, and the upper end of the telescopic rod of the cylinder 2 is provided with an external thread 201, and the upper end flange 202 of the cylinder 2 is connected with a connecting piece assembly 3, and a locking pin 4 is inserted in the connecting assembly 3; the connecting assembly 3 includes a lower flange 301 connected to the flange 202, and an upper flange 302 is provided above the lower flange 301. The lower flange 301 and the upper flange 302 are fixedly connected by a connecting pipe 303, and a locking through hole 304 is provided on the side wall of the connecting pipe 303; the locking pin 4 includes a pin body 401, and the lower end of the pin body 401 is fixedly connected to a connecting column 402, and the lower end of the connecting column 402 is provided with a plug hole 403 which can be connected to the external thread 201 on the upper end of the telescopic rod of the cylinder 2, and the side wall of the connecting column 402 is rotatably connected to a locking screw 404.

[0027] It should be noted that the hydraulic pump 1 can be a manual hydraulic pump, an electric hydraulic pump, or a hand-electric integrated hydraulic pump according to actual conditions.

[0028] The side wall of the connecting column 402 is provided with a through hole 4021 communicating with the interior of the plug hole 403 , and the locking screw 404 is rotatably inserted into the through hole 4021 . The through hole 4021 is provided with an internal thread adapted to the locking screw 404 .

[0029] The flange 202 and the lower flange 301 are respectively provided with bolt holes a2021 and bolt holes b3011 , and the flange 202 and the lower flange 301 are connected by screws 5 inserted into the bolt holes a2021 and the bolt holes b3011 .

[0030] The upper and lower edges of the pin body 401 are respectively provided with an upper chamfer 4011 and a lower chamfer 4012. The upper chamfer 4011 allows the locking pin 4 to be more smoothly inserted into the mounting hole of the wind turbine, while the lower chamfer 4012 allows the lower end of the locking pin 4 to be more smoothly inserted into the connecting tube 303 of the connecting assembly 3.

[0031] Wherein, the outer surface of the pin body 401 is provided with a spiral groove 4013. By providing the spiral groove 4013, mechanical butter can be smeared in the spiral groove 4013, thereby reducing the friction and wear of the locking pin 4 and extending the service life.

[0032] The plug hole 403 is provided with an internal thread that matches the external thread 201 .

[0033] The upper flange 302 is provided with a connection hole 3021 for installation with a wind turbine generator set.

[0034] Example: Reference Figures 1 to 6 Before use, first insert the screw 5 into the bolt hole a2021 of the flange 202 and the bolt hole b3011 of the lower flange 301 and tighten them in place. Then, insert the locking pin 4 into the upper end of the telescopic rod of the oil cylinder 2 through the insertion hole 403 opened at the lower end of the connecting column 402, and then twist the locking pin 4 so that the internal thread of the insertion hole 403 and the external thread 201 at the upper end of the telescopic rod of the oil cylinder 2 are screwed into place. At this time, the locking screw 404 connected to the side wall of the connecting column 402 is just aligned with the locking through hole 304, and then twist the fastening screw connected to the through hole 4021 404, and is tightened into place with the cooperation of the internal thread of the through hole 4021, so that the end of the fastening screw 404 will be tightly pressed against the side wall of the connecting column 402 to lock the locking pin 4, and then mechanical butter is applied to the spiral groove 4013 of the pin body 401, and the locking pin 4 is inserted into the wind turbine impeller lock hole of the wind turbine set, and the upper flange 302 is installed on the wind turbine set with a screw through the connecting hole 3021. At this time, the whole connected by the cylinder 2, the connecting assembly 3, and the locking pin 4 is installed on the wind turbine set, and finally the hydraulic pump 1 is connected to the cylinder 2 through the oil pipe 6.

[0035] When the fan impeller needs to be locked, it is only necessary to operate the hydraulic pump to supply hydraulic oil to the oil cylinder 2, so that the telescopic rod of the oil cylinder 2 can push the locking pin 4 to move and insert into the impeller lock hole to lock with the impeller.

[0036] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A fan impeller locking device, comprising a hydraulic pump (1), characterized in that: The hydraulic pump (1) is connected to the oil cylinder (2) via an oil pipe (6); the upper end of the telescopic rod of the oil cylinder (2) is provided with an external thread (201); the upper end flange (202) of the oil cylinder (2) is connected to a connecting assembly (3); and a locking pin (4) is inserted into the connecting assembly (3); The connecting assembly (3) includes a lower flange (301) connected to the flange (202), an upper flange (302) is provided above the lower flange (301), the lower flange (301) and the upper flange (302) are fixedly connected via a connecting pipe (303), and a locking through hole (304) is provided on a side wall of the connecting pipe (303); The locking pin (4) comprises a pin body (401), the lower end of the pin body (401) is fixedly connected to a connecting column (402), the lower end of the connecting column (402) is provided with a plug hole (403) that can be connected to the external thread (201) at the upper end of the telescopic rod of the oil cylinder (2), and the side wall of the connecting column (402) is rotatably connected to a locking screw (404).

2. A fan impeller locking device according to claim 1, characterized in that: The side wall of the connecting column (402) is provided with a through hole (4021) which is in communication with the interior of the plug hole (403); the locking screw (404) is rotatably inserted into the through hole (4021); and the through hole (4021) is provided with an internal thread which is compatible with the locking screw (404).

3. The fan impeller locking device according to claim 1, characterized in that: The flange (202) and the lower flange (301) are respectively provided with a bolt hole a (2021) and a bolt hole b (3011), and the flange (202) and the lower flange (301) are connected by a screw (5) inserted into the bolt hole a (2021) and the bolt hole b (3011).

4. The fan impeller locking device according to claim 1, characterized in that: The upper and lower edges of the pin body (401) are respectively provided with an upper chamfer (4011) and a lower chamfer (4012).

5. The fan impeller locking device according to claim 1, characterized in that: A spiral groove (4013) is provided on the outer surface of the pin body (401).

6. The fan impeller locking device according to claim 1, characterized in that: The inserting hole (403) is provided with an internal thread that matches the external thread (201).

7. The fan impeller locking device according to claim 1, characterized in that: The upper flange (302) is provided with a connection hole (3021) for installation with a wind turbine generator set.

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