Monitoring device for cabin of wind turbine generator

Abstract

The utility model relates to the technical field of wind power generation monitoring equipment, and discloses a monitoring device for a cabin of a wind turbine generator system, which comprises a mounting seat, a moving assembly, monitoring equipment and an automatic charging assembly, and is characterized in that the mounting seat is arranged at the top of the cabin; the moving assembly comprises a horizontal moving mechanism and a height lifting mechanism; the monitoring device is provided with a charging port. The automatic charging assembly comprises a charging base, an electric quantity detection module and a mobile control module, the charging base is arranged on the mounting base, the electric quantity detection module and the mobile control module are arranged in the monitoring equipment, the electric quantity detection module is used for detecting the residual electric quantity of the monitoring equipment, and the signal input end of the mobile control module is connected with the electric quantity detection module; according to the wind turbine generator system cabin remote monitoring device, the long-term remote monitoring requirement of a wind turbine generator system cabin can be met, the cruising ability of the monitoring device is high, and long-term sustainable monitoring can be carried out.

Description

TECHNICAL FIELD

[0001] The utility model relates to wind power generation monitoring equipment technical field, concretely relates to a kind of monitoring device of wind turbine generator set cabin. BACKGROUND

[0002] Wind turbine generator set is the core equipment of wind energy conversion into electric energy, is widely used in wind power plant. Wind turbine generator set is arranged with multiple key mechanical and electrical devices inside, such as generator, variable pitch system, cooling fan, braking system, hydraulic unit, electrical cabinet etc. Because cabin space is relatively narrow and equipment is dense, its operating state is directly related to the power generation efficiency and operation and maintenance cost of the whole wind turbine, in order to guarantee the long-term reliable operation of wind turbine generator set, the equipment in wind turbine generator set cabin needs to be monitored in real time with video, so as to find abnormal situation in time and carry out remote diagnosis and processing.

[0003] Common camera is mostly fixedly arranged in certain installation position, and power supply is realized by plug-in of plug and socket equipped thereon. However, the monitoring area of such fixed-position camera is limited, and cannot meet the demand of large-scale monitoring. The existing adjustable-position camera mostly needs to be equipped with moving frame, and the camera is installed on the moving frame, can be moved vertically and horizontally on the moving frame, and the monitoring range is expanded. However, such camera needs to be moved, and therefore mostly uses battery power supply. However, the storage capacity of battery is limited, and the endurance is limited, and cannot meet the long-term sustainable remote monitoring demand of wind turbine generator set cabin. UTILITARY MODEL CONTENT

[0004] Therefore, the utility model provides a kind of monitoring device of wind turbine generator set cabin to solve the problem that wind turbine generator set is insufficient in endurance of monitoring equipment, cannot long-term sustainable work.

[0005] Firstly, the utility model provides a kind of monitoring device of wind turbine generator set cabin, and it includes:

[0006] Mounting seat, the mounting seat is set in cabin top;

[0007] Moving assembly, the moving assembly includes: horizontal moving mechanism and height lifting mechanism, the horizontal moving mechanism is set on the mounting seat, the drive end of the horizontal moving mechanism is connected with the height lifting mechanism, the drive end of the height lifting mechanism is connected with the monitoring device;

[0008] Monitoring equipment, the monitoring equipment is provided with charging port;

[0009] The automatic charging assembly comprises a charging seat, a power detection module and a movement control module. The charging seat is arranged on the mounting seat and is electrically connected with a power cabinet in the cabin. The power detection module and the movement control module are arranged in the monitoring device. The power detection module is used for detecting the remaining power of the monitoring device. The signal input end of the movement control module is connected with the power detection module, and the signal output end is connected with the horizontal movement mechanism and the height lifting mechanism. When the power detection module detects that the remaining power of the monitoring device is lower than a preset value, a signal is transmitted to the movement control module, and the horizontal movement mechanism and the height lifting mechanism are controlled by the movement control module to move the monitoring device to connect the charging port with the charging seat.

[0010] Advantages

[0011] The horizontal movement mechanism and the height lifting mechanism can control the lifting and movement of the monitoring device. The monitoring device can be flexibly adjusted in position according to monitoring requirements, and the monitoring range is improved. The automatic charging assembly combines the power detection module and the movement control module, so that the monitoring device can autonomously move to the charging seat to complete the docking charging when the power is lower than the preset value. The problem of monitoring interruption caused by power depletion of the monitoring device is avoided, and the endurance of the monitoring device is improved.

[0012] In an alternative embodiment, the monitoring device of the wind turbine cabin further comprises a position storage module, which is arranged in the monitoring device and connected with the movement control module.

[0013] Advantages

[0014] The position storage module is used for recording the current position, the charging position and the target monitoring position of the monitoring device. By arranging the position storage module, the monitoring device can accurately return to the original monitoring position after completing the automatic charging, or move to the specified monitoring point according to the preset monitoring position to complete the monitoring task.

[0015] In an alternative embodiment, the monitoring device of the wind turbine cabin further comprises an alarm module, which is arranged in the monitoring device and connected with the power detection module.

[0016] Advantages

[0017] The alarm module is connected with the power detection module and is used for sending an alarm signal when the power of the monitoring device is lower than the preset value. In the case that the power of the monitoring device is about to be depleted but has not completed the automatic movement and charging, the alarm module can send warning information in advance to remind the maintenance personnel to pay attention to the state of the monitoring device.

[0018] In an alternative embodiment, the monitoring device of the wind turbine nacelle further comprises a communication module, which is arranged on the monitoring device and connected with the mobile control module.

[0019] Advantages

[0020] The monitoring device can establish real-time data communication with the remote control center through the communication module, and the operation and maintenance personnel can remotely control the movement of the monitoring device and view the monitoring content.

[0021] In an alternative embodiment, the horizontal movement mechanism comprises a first driving member, a lead screw, a moving seat and a guide rod. The first driving member is arranged on the other side of the mounting seat. The lead screw is arranged on the mounting seat and connected with the driving end of the first driving member at one end. The guide rod is arranged on the mounting seat and arranged in parallel with the lead screw. The moving seat has a threaded connection hole and a limiting through hole. The threaded connection hole is threadedly connected with the lead screw, and the guide rod passes through the limiting through hole.

[0022] Advantages

[0023] The horizontal movement mechanism can adjust the position of the monitoring device in the wind turbine nacelle, monitor different targets, and improve the monitoring range of the monitoring device.

[0024] In an alternative embodiment, the horizontal movement mechanism further comprises a limit switch arranged on the mounting seat.

[0025] In an alternative embodiment, the height lifting mechanism comprises a second driving member and a lifting device. The fixed end of the second driving member is connected with the moving seat, and the driving end thereof is connected with the lifting device. The lifting device is connected with the monitoring device.

[0026] Advantages

[0027] The height lifting mechanism can flexibly adjust the height of the monitoring device, adjust the up-down position according to different parts of the monitoring target, and realize multi-dimensional coverage of the monitoring range.

[0028] In an alternative embodiment, the lifting device comprises a rotating part and a connecting part. A rotating sliding groove is formed on the rotating part, and one end of the connecting part is arranged in the rotating sliding groove and rotationally connected with the rotating part.

[0029] In an alternative embodiment, the mounting seat comprises a bottom plate, side plates and an extension plate. The bottom end of the bottom plate is connected with the top of the nacelle. The two side plates are arranged on the two sides of the length direction of the bottom plate. The extension plate is connected with one of the side plates.

[0030] In an alternative embodiment, the monitoring device is a rotatable camera. BRIEF DESCRIPTION OF DRAWINGS

[0031] In order to more clearly illustrate the specific embodiments of the present application or the technical solutions in the prior art, the drawings needed in the specific embodiments or prior art description will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0032] Fig. 1 It is a structural schematic view of a monitoring device of a wind turbine generator cabin of an embodiment of the present application.

[0033] Fig. 2 It is a structural schematic view of a mounting seat and a horizontal moving mechanism of an embodiment of the present application.

[0034] Fig. 3 It is a structural schematic view of a lifting device of an embodiment of the present application.

[0035] Fig. 4 It is a connection schematic view of a moving control module of a monitoring device of a wind turbine generator cabin of an embodiment of the present application.

[0036] Explanation of reference signs:

[0037] 1, mounting seat, 11, bottom plate, 12, side plate, 13, extension plate;

[0038] 21, horizontal moving mechanism, 211, first driving member, 212, lead screw, 213, moving seat, 214, guide rod, 215, limit switch, 22, height lifting mechanism, 221, second driving member, 222, lifting device, 2221, rotating part, 2222, connecting part, 2223, rotating sliding slot;

[0039] 3, monitoring device;

[0040] 41, charging seat, 42, electric quantity detection module, 43, moving control module;

[0041] 5, position storage module;

[0042] 6, alarm module;

[0043] 7, communication module. DETAILED DESCRIPTION

[0044] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described in the following with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor belong to the protection scope of the utility model.

[0045] The embodiments of the utility model will be described in the following with reference to Figs. 1 to 4

[0046] According to the embodiments of the utility model, on the one hand, a monitoring device of a wind turbine generator set cabin is provided, which comprises: a mounting seat 1, a moving assembly, a monitoring device 3 and an automatic charging assembly, the mounting seat 1 is arranged at the top of the cabin; the moving assembly comprises: a horizontal moving mechanism 21 and a height lifting mechanism 22, the horizontal moving mechanism 21 is arranged on the mounting seat 1, the driving end of the horizontal moving mechanism 21 is connected with the height lifting mechanism 22, and the driving end of the height lifting mechanism 22 is connected with the monitoring device; the monitoring device 3 is provided with a charging port; the automatic charging assembly comprises: a charging seat 41, a power detection module 42 and a moving control module 43, the charging seat 41 is arranged on the mounting seat 1 and is electrically connected with a power cabinet in the cabin, the power detection module 42 and the moving control module 43 are arranged in the monitoring device 3, the power detection module 42 is used for detecting the residual power of the monitoring device 3, the signal input end of the moving control module 43 is connected with the power detection module 42, the signal output end is connected with the horizontal moving mechanism 21 and the height lifting mechanism 22, when the power detection module 42 monitors that the residual power of the monitoring device 3 is lower than a preset value, signals are transmitted to the moving control module 43, and the horizontal moving mechanism 21 and the height lifting mechanism 22 are controlled through the moving control module 43 to drive the monitoring device 3 to move so that the charging port is connected with the charging seat 41.

[0047] Specifically, the horizontal moving mechanism 21 for driving the horizontal movement of the monitoring device 3 is fixed on the mounting seat 1, the height lifting mechanism 22 is connected on the horizontal moving mechanism 21, the height lifting mechanism 22 is used for driving the monitoring device 3 to lift along the vertical direction, and the horizontal moving mechanism 21 and the height lifting mechanism 22 can move in linkage. The lower end of the height lifting mechanism 22 is connected with the monitoring device 3, the monitoring device 3 selects a camera capable of external charging, and can perform omnibearing video monitoring on the equipment and key components in the wind turbine generator set cabin. The charging port of the camera is located at the bottom outside, can be docked with the charging seat 41 on the mounting seat 1 and charged. The charging seat 41 is connected with the power cabinet in the cabin through wires, and the stability of power supply and charging is ensured.

[0048] ​Further, the monitoring device 3 is integrated with an electric quantity detection module 42 and a mobile control module 43. The electric quantity detection module 42 collects the battery electric quantity data of the monitoring device 3 in real time, and transmits a low electric quantity signal to the mobile control module 43 when detecting that the electric quantity is lower than a set threshold value (such as 10% or 20%).

[0049] The monitoring device 3 can recognize its electric quantity state through the electric quantity detection module 42, automatically determine when to enter the charging process, and coordinate the horizontal moving mechanism 21 and the height lifting mechanism 22 through the mobile control module 43, so that the monitoring device 3 automatically moves to the charging position and completes the docking charging, ensuring the continuity and stability of the monitoring work of the monitoring device 3. At the same time, the monitoring device 3 has adjustable ability in horizontal and vertical directions, and can flexibly cover the monitoring area in the nacelle, effectively improving the monitoring range and monitoring quality.

[0050] In one embodiment, the monitoring device of the wind turbine nacelle further comprises a position storage module 5, which is arranged in the monitoring device 3 and connected with the mobile control module 43.

[0051] The position storage module 5 can record the charging position of the monitoring device 3 and the original monitoring position before moving for charging, so that the monitoring device 3 can automatically return to the original monitoring position after charging is completed, realizing the continuity and accuracy of the monitoring task. Specifically, the position storage module 5 comprises displacement encoders arranged on the horizontal moving mechanism 21 and the height lifting mechanism 22, and an embedded control chip cooperating therewith. The rotary encoder is used to collect the displacement and distance information of the monitoring device 3 in the moving process in real time, and the control chip converts these information into recognizable position data, stores and sends to the mobile control module 43, so that the original position information can be retained under the condition of power-off of the monitoring device 3 or system restart, and the precise reset of the monitoring device 3 is completed. When the monitoring device 3 completes charging on the charging seat 41, the mobile control module 43 will call the position information stored in the position storage module 5 to control the horizontal moving mechanism 21 and the height lifting mechanism 22 to work cooperatively, so that the monitoring device 3 returns to the original monitoring point, preventing the monitoring device 3 from being deviated to produce a monitoring blind area.

[0052] In one embodiment, the monitoring device of the wind turbine nacelle further comprises an alarm module 6, which is arranged on the monitoring device 3 and connected with the power detection module 42.

[0053] The alarm module 6 is connected with the power detection module 42 to realize real-time response to the power state of the monitoring device 3. When the power of the monitoring device 3 is lower than the set threshold, the alarm module 6 can send an alarm signal. The alarm module 6 can be a buzzer, an electric light alarm or a wireless alarm, etc. Specifically, when the power detection module 42 detects that the remaining power of the monitoring device 3 is lower than the preset value, in addition to sending a charging instruction to the mobile control module 43, the alarm module 6 also transmits a signal of insufficient power to the alarm module 6, which warns by continuous ringing, LED light flashing, etc. When the monitoring device 3 moves to the charging position, the alarm module 6 will stop sending the alarm. If the horizontal moving mechanism 21 or the height lifting mechanism 22 fails to move the monitoring device 3 to the charging position, the alarm module 6 will always send an alarm, so that the maintenance personnel can pay attention to this abnormal situation in time and maintain the monitoring device in time to ensure the normal operation of the monitoring device 3.

[0054] In one embodiment, the monitoring device of the wind turbine nacelle further comprises a communication module 7, which is arranged on the monitoring device 3 and connected with the mobile control module 43.

[0055] The communication module 7 is integrated in the monitoring device 3 and electrically connected with the mobile control module 43 to realize wireless transmission of monitoring data and control instructions. Specifically, the communication module 7 is a wireless communication chip supporting Wi-Fi, 4G / 5G or LoRa communication protocol, which can be flexibly selected according to the network coverage of the wind farm to ensure the remote communication ability of the communication module 7 in different network environments.

[0056] The communication module 7 works with the mobile control module 43 and the alarm module 6 to send relevant state information to the remote control center in real time when the power of the monitoring device 3 is insufficient or the moving state is abnormal, realizing remote alarm. At the same time, the operation and maintenance personnel can also remotely control the movement of the monitoring device 3 through the communication module 7 to issue control instructions. The communication module 7 also supports uploading of high-definition video data, and the pictures taken by the camera can be remotely viewed and stored through the cloud platform or local server, which is convenient for the operation and maintenance personnel to perform real-time inspection or historical data analysis.

[0057] In one embodiment, the mounting seat 1 comprises a bottom plate 11, side plates 12 and an extension plate 13. The bottom end of the bottom plate 11 is connected with the top of the nacelle, the two side plates 12 are arranged on the two sides of the length direction of the bottom plate 11, and the extension plate 13 is connected with one of the side plates 12.

[0058] Specifically, the bottom plate 11 and the side plates 12 are made of aluminum alloy material, the bottom plate 11 is selected as a strip-shaped plate, and the bottom end of the bottom plate 11 is fixedly connected to the top centerline of the wind turbine nacelle by means of screws or welding. The two side plates 12 are symmetrically arranged on the two sides of the length direction of the bottom plate 11, and one of the side plates 12 is welded with an extended plate 13 extending downward, and the extended plate 13 is fixedly arranged on the side close to the monitoring device 3 and provided with a charging seat 41.

[0059] In one embodiment, the horizontal moving mechanism 21 comprises a first driving member 211, a lead screw 212, a moving seat 213 and a guide rod 214. The first driving member 211 is arranged on the other side of the mounting seat 1, the lead screw 212 is arranged on the mounting seat 1 and connected to the driving end of the first driving member 211 at one end, the guide rod 214 is arranged on the mounting seat 1 and arranged in parallel with the lead screw 212, and the moving seat 213 is provided with a threaded connection hole and a limiting through hole. The threaded connection hole is threadedly connected with the lead screw 212, and the guide rod 214 passes through the limiting through hole.

[0060] Specifically, the first driving member 211 is preferably a stepping motor or a servo motor, which is fixedly installed on the side of one of the side plates 12 away from the bottom plate 11, and the driving end thereof penetrates through the side plate 12 and is connected to one end of the lead screw 212 through a shaft coupling. The other end of the lead screw 212 is rotatably installed on the other side plate 12 through a bearing assembly, and the first driving member 211 can drive the lead screw 212 to rotate in the mounting seat 1.

[0061] The lead screw 212 is arranged along the length direction of the bottom plate 11 and cooperates with a nut seat arranged at the bottom of the moving seat 213 in a threaded structure. When the lead screw 212 rotates, the moving seat 213 moves linearly along the direction of the lead screw 212 under the action of screw transmission. In order to ensure the stability of the moving process of the moving seat 213, the guide rod 214 is fixedly installed on the mounting seat 1 and arranged in parallel with the length direction of the lead screw 212. The moving seat 213 is provided with a guide hole, and the guide hole is sleeved on the guide rod 214 to play an auxiliary guiding and anti-torsion supporting role, so as to avoid the deviation or shaking of the moving seat 213 during the moving process.

[0062] In one embodiment, the horizontal moving mechanism 21 further comprises a limiting switch 215 arranged on the mounting seat 1.

[0063] The limit switches 215 are arranged at both ends of the length of the base plate 11, corresponding to the start and end positions of the moving path of the lead screw 212. Specifically, the limit switches 215 are mechanical trigger type micro switches, which are mounted on both sides of the base plate 11 by screws. When the moving seat 213 moves to the preset limit position under the drive of the lead screw 212, the trigger lugs on the moving seat 213 will contact the limit switches 215, immediately sending a stop signal, and the first driving member 211 stops working, preventing the horizontal moving mechanism 21 from overrunning during operation, thereby avoiding the collision or damage of the monitoring device 3 caused by the overstroke of the moving seat 213.

[0064] In one embodiment, the height lifting mechanism 22 comprises a second driving member 221 and a lifting device 222, the fixed end of the second driving member 221 is connected with the moving seat 213, and the drive end is connected with the lifting device 222, and the lifting device 222 is connected with the monitoring device 3.

[0065] The second driving member 221 is selected from an electric push rod or a servo motor, and the drive end is connected with the input end of the lifting device 222 to provide driving force for the lifting device 222. The structure of the lifting device 222 can be selected from a lifting rod, a lifting guide rail or a rotary lifting member, which can convert the rotation or linear drive of the second driving member 221 into lifting movement of the monitoring device 3 in the vertical direction. The monitoring device 3 is connected with the end of the lifting device 222, and the lifting device 222 can lift or lower the monitoring device 3 to a specified height under the drive of the second driving member 221, to complete flexible shooting of the upper or lower area in the machine cabin of the wind turbine generator.

[0066] In one embodiment, the lifting device 222 comprises a rotating part 2221 and a connecting part 2222, the rotating part 2221 is provided with a rotating sliding groove 2223, and one end of the connecting part 2222 is arranged in the rotating sliding groove 2223 and rotationally connected with the rotating part 2221.

[0067] In this embodiment, the rotating part 2221 is selected from a cylindrical shaft body, the top end is connected with the second driving member 221, and the bottom end side wall is provided with a spiral sliding groove for guiding the movement of the connecting part 2222. The connecting part 2222 is selected from a hollow cylindrical shaft body, one end is sleeved on the rotating part 2221, and the other end is connected with the monitoring device 3. The connecting part is provided with a rotating shaft or a ball inside, which can be clamped in the spiral sliding groove and rotationally connected with the rotating part 2221. The second driving member 221 drives the rotating part 2221 to rotate, and the connecting part 2222 converts the rotary motion of the rotating part 2221 into vertical lifting motion, driving the monitoring device 3 to lift.

[0068] In one embodiment, the monitoring device 3 is a rotatable camera.

[0069] Specifically, the camera has horizontal rotation and vertical tilt (i.e., pitch angle adjustment) functions, and through built-in micro stepping motors or servo motors, the camera realizes 360-degree continuous rotation in the horizontal direction and wide-angle adjustment in the vertical direction, thereby meeting the shooting requirements of different monitoring angles.

[0070] Working principle: when the state of a specific device in the nacelle of a wind turbine needs to be monitored, the maintenance personnel sends a moving instruction to the monitoring device through the communication module 7, and the monitoring device moves in multiple directions inside the nacelle along a control trajectory under the cooperation of the horizontal moving mechanism 21 and the height lifting mechanism 22 according to the remote control instruction, thereby monitoring the specific device.

[0071] During the monitoring process, the power detection module 42 monitors the remaining power state of the monitoring device 3 in real time and transmits the monitoring result to the mobile control module 43. When it is detected that the power of the monitoring device 3 is lower than a preset threshold, the mobile control module 43 starts an automatic charging process according to a preset logic, the position storage module 5 stores the current position data, the horizontal moving mechanism 21 and the height lifting mechanism 22 drive the monitoring device 3 to move to the position where the charging seat 41 is located, the charging port on the monitoring device 3 is precisely connected to the charging seat 41, and the charging connection is completed. When the power of the monitoring device 3 is about to be exhausted but the automatic charging is not completed, the alarm module 6 can send a warning information in advance to trigger an audible and visual alarm and a remote alarm, thereby prompting the maintenance personnel that the device is about to be powered off. After the charging is completed, the mobile control module 43 drives the horizontal moving mechanism 21 and the height lifting mechanism 22 to reset the monitoring device 3 to the original monitoring position according to the original monitoring position data recorded in the position storage module 5, thereby continuing the monitoring task.

[0072] Although the embodiments of the present application are described in conjunction with the drawings, various modifications and variations can be made by those skilled in the art without departing from the spirit and scope of the present application, and such modifications and variations fall within the scope defined by the appended claims.

Claims

1. A monitoring device for a wind turbine nacelle, characterized in that The utility model relates to a kind of automatic charging device for monitoring equipment in cabin, including: Mounting seat (1), which is provided on the top of the cabin; A moving assembly, which includes a horizontal moving mechanism (21) and a height lifting mechanism (22). The horizontal moving mechanism (21) is provided on the mounting seat (1), and the driving end of the horizontal moving mechanism (21) is connected with the height lifting mechanism (22). The driving end of the height lifting mechanism (22) is connected with the monitoring device. A monitoring device (3) is provided with a charging port. An automatic charging assembly, which includes a charging seat (41), a power detection module (42) and a movement control module (43). The charging seat (41) is provided on the mounting seat (1) and is electrically connected with the power cabinet in the cabin. The power detection module (42) and the movement control module (43) are provided in the monitoring device (3). The power detection module (42) is used to detect the remaining power of the monitoring device (3). The signal input end of the movement control module (43) is connected with the power detection module (42), and the signal output end is connected with the horizontal moving mechanism (21) and the height lifting mechanism (22). When the power detection module (42) detects that the remaining power of the monitoring device (3) is lower than the preset value, it transmits a signal to the movement control module (43), and the movement control module (43) controls the horizontal moving mechanism (21) and the height lifting mechanism (22) to move the monitoring device (3) to connect the charging port with the charging seat (41).

2. The monitoring device of a wind turbine nacelle according to claim 1, characterized in that, Further comprising a position storage module (5), which is provided on the monitoring device (3) and is connected with the movement control module (43).

3. The monitoring device of a wind turbine nacelle according to claim 2, characterized in that, Further comprising an alarm module (6), which is provided on the monitoring device (3) and is connected with the power detection module (42).

4. The wind turbine monitoring device of claim 3, wherein, Further comprising a communication module (7), which is provided on the monitoring device (3) and is connected with the movement control module (43).

5. The wind turbine generator unit nacelle monitoring apparatus according to claim 1, wherein, The horizontal moving mechanism (21) includes a first driving member (211), a lead screw (212), a moving seat (213) and a guide rod (214). The first driving member (211) is provided on the other side of the mounting seat (1). The lead screw (212) is provided on the mounting seat (1) and is connected with the driving end of the first driving member (211) at one end. The guide rod (214) is provided on the mounting seat (1) and is arranged in parallel with the lead screw (212). The moving seat (213) has a threaded connection hole and a limiting through hole. The threaded connection hole is threadedly connected with the lead screw (212), and the guide rod (214) passes through the limiting through hole.

6. The monitoring device of a wind turbine nacelle according to claim 5, characterized in that, The horizontal moving mechanism (21) further comprises a limit switch (215), which is provided on the mounting seat (1).

7. The monitoring device of a wind turbine nacelle according to claim 6, characterized in that The height lifting mechanism (22) comprises a second driving member (221) and a lifting device (222), the fixed end of the second driving member (221) is connected with the moving seat (213), the driving end thereof is connected with the lifting device (222), and the lifting device (222) is connected with the monitoring device (3).

8. The monitoring device of a wind turbine nacelle according to claim 7, characterized in that, The lifting device (222) comprises a rotating part (2221) and a connecting part (2222), a rotating sliding groove (2223) is formed in the rotating part (2221), and one end of the connecting part (2222) is arranged in the rotating sliding groove (2223) and rotationally connected with the rotating part (2221).

9. The monitoring device of a wind turbine nacelle according to claim 1, characterized in that, The mounting seat (1) comprises a bottom plate (11), side plates (12) and an extension plate (13), the bottom end of the bottom plate (11) is connected with the top of the cabin, the two side plates (12) are arranged on the two sides of the length direction of the bottom plate (11), and the extension plate (13) is connected with one side plate (12).

10. The monitoring device of a wind turbine nacelle according to any of claims 1-9, characterized in that, The monitoring device (3) is a rotatable camera.

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