Device for monitoring the screwing of a wind turbine blade bolt

Abstract

The application provides a wind power blade bolt screwing monitoring device and relates to the technical field of wind power generation. The device comprises a base, a guide sleeve, a slide rail and a laser alarm. The upper horizontal surface of the base is connected with a designated reference element. The guide sleeve is fixed on the lower horizontal surface of the base. An extension hole with a parallel extension direction to the lower horizontal surface of the base is arranged on one side of the guide sleeve. The slide rail has a movable end and a connecting end. The slide rail can move along the extension direction of the extension hole. The laser alarm is arranged on the connecting end of the slide rail. The laser alarm is used for emitting a laser beam to the bolt, receiving and analyzing the reflected laser beam from the bolt, judging whether the bolt is screwed into the set depth of the corresponding screw hole according to the reflection intensity and reflectivity of the reflected laser beam, and issuing an alarm prompt if the reflection intensity and reflectivity of the reflected laser beam do not meet the preset conditions. The problem that it is difficult to accurately control the set depth of the double-headed bolt screwed into the embedded bolt sleeve of the wind power blade in the prior art is solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of wind power generation technology, in particular to a wind turbine blade bolt screwing monitoring device. BACKGROUND

[0002] At present, the large wind turbine blade is connected with the hub by the blade root embedded bolt sleeve and the blade root stud. The blade root embedded bolt sleeve and the blade root stud are connected after the wind turbine blade is transported to the project site. The exposed length of the blade root stud needs to be controlled to ensure the internal engagement size of the embedded bolt sleeve and the blade root stud. The control tolerance range of the exposed length is only (0, 1) mm, and it is difficult to screw into the specified length at one time. If the assembly requirement is not met, the bolt fracture problem is prone to occur, which finally leads to the blade fracture or collapse, causing huge economic loss.

[0003] Therefore, there is an urgent need for a device to solve at least one of the above problems. SUMMARY

[0004] The purpose of the embodiment of the present application is to provide a wind turbine blade bolt screwing monitoring device to solve the problem that it is difficult to accurately control the set depth of the blade root stud screwed into the embedded bolt sleeve of the wind turbine blade in the prior art.

[0005] In order to achieve the above purpose, the present application provides a wind turbine blade bolt screwing monitoring device for monitoring whether the bolt connecting the wind turbine blade and the hub is screwed into the set depth of the corresponding screw hole on the wind turbine blade, and connecting with the specified reference part on the wind turbine blade, comprising:

[0006] A base having a lower horizontal surface and an upper horizontal surface parallel to each other, the upper horizontal surface of the base being adsorbed on the specified reference part on the wind turbine blade;

[0007] A guide sleeve fixed on the lower horizontal surface of the base, an extension hole with an extension direction parallel to the lower horizontal surface of the base being formed on one side of the guide sleeve;

[0008] A slide rail with a size matching the extension hole, having a movable end and a connecting end, the movable end being slidably sleeved in the extension hole of the guide sleeve, and the connecting end being exposed outside the extension hole, the slide rail being capable of moving along the extension direction of the extension hole;

[0009] The laser alarm is arranged at the connection end of the slide rail, and is used to emit a laser beam to the bolt screwed into the screw hole on the wind turbine blade, and receive and analyze the laser beam reflected from the bolt, and judge whether the bolt is screwed into the set depth of the corresponding screw hole on the wind turbine blade based on the reflection intensity and reflectivity of the reflected laser beam obtained after analysis and processing. Among them, if the reflection intensity and reflectivity of the reflected laser beam meet the preset conditions, the bolt is not screwed into the set depth, and the laser alarm does not issue an alarm prompt. If the reflection intensity and reflectivity of the reflected laser beam do not meet the preset conditions, the bolt is screwed into the set depth, and the laser alarm issues an alarm prompt.

[0010] Specifically, the laser alarm includes:

[0011] A laser transmitter, configured to transmit a laser beam toward a bolt screwed into a corresponding screw hole on a wind turbine blade;

[0012] a receiver, for receiving the laser signal reflected from the bolt;

[0013] A signal processor is connected to the photoelectric sensor signal, and is used to analyze and process the laser signal, and determine whether the bolt is screwed into the set depth of the corresponding screw hole according to the processing result, and issue an alarm command after determining that the bolt is screwed into the set depth of the corresponding screw hole;

[0014] The alarm display is electrically connected to the signal processor and is used to issue an alarm prompt according to the alarm instruction.

[0015] Specifically, a limiting hole is provided in the guide sleeve, which is connected to the extension hole and is perpendicular to the extension direction of the extension hole;

[0016] The screw-in monitoring device further comprises: a limiting pin, which is screwed into the limiting hole and is used to limit the position of the slide rail in the extension hole.

[0017] Specifically, the base is made of magnetic material.

[0018] Specifically, a groove is provided on the upper horizontal surface to enhance the connection strength between the base and the designated reference member.

[0019] Specifically, scale lines are provided on the slide rail.

[0020] Specifically, the laser alarm also includes: a laser mounting seat with a accommodating cavity, the laser mounting seat is connected to the connecting end of the slide rail, the laser transmitter, receiver and signal processor are arranged in the accommodating cavity of the laser mounting seat, and the alarm display is arranged outside the accommodating cavity.

[0021] Specifically, it also includes: an auxiliary fixing component, which is connected to the guide sleeve and is detachably connected to the designated reference part.

[0022] Specifically, the auxiliary fixing assembly comprises a crossbar, a pair of clamping arms and a pair of clamping heads.

[0023] The pair of clamping arms are symmetrically arranged on the guide sleeve, the upper connecting ends of the pair of clamping arms are connected by the crossbar, and the lower connecting ends of the pair of clamping arms are respectively hinged to the guide sleeve.

[0024] One side of one clamping arm facing the other clamping arm is provided with one clamping head.

[0025] Specifically, the auxiliary fixing assembly further comprises a pair of guide columns and a pair of compression springs.

[0026] One side of one clamping arm facing the other clamping arm is provided with one guide column, and the clamping head is provided with a guide hole matched with the guide column in shape, and the guide hole is sleeved on the guide column.

[0027] A compression spring is arranged between the guide column and the hole bottom of the guide hole of the corresponding clamping head, and the compression spring is connected with the corresponding guide column and clamping head.

[0028] The wind power blade bolt rotation monitoring device provided by the application can monitor the rotation depth of the bolt during the bolt installation process, and can more accurately control the bolt rotation depth and the exposed length of the bolt exposed outside the screw hole, thereby solving the problem that it is difficult to accurately control the set depth of the bolt in the pre-buried bolt sleeve of the wind power blade in the prior art.

[0029] Other features and advantages of the embodiments of the application will be described in detail in the specific implementation manner part. BRIEF DESCRIPTION OF DRAWINGS

[0030] The accompanying drawings are included to provide a further understanding of embodiments of the application, and are incorporated in and constitute a part of this specification, illustrate embodiments of the application, and together with the description serve to explain embodiments of the application, but do not limit the present application. In the drawings:

[0031] Figure 1 is a structural schematic view of the bolt insertion monitoring device for wind power blade provided by the present application;

[0032] Figure 2 is Figure 1 a sectional view of the bolt insertion monitoring device for wind power blade in A-A direction of

[0033] Figure 3 is a schematic view of the base of the bolt insertion monitoring device for wind power blade being adsorbed on the designated reference member.

[0034] Legend of reference signs

[0035] 1-base; 2-guide sleeve; 3-sliding rail; 4-laser alarm; 5-limiting nail; 6-assistant fixing assembly; 41-laser mounting seat; 61-cross bar; 62-clamping arm; 63-clamping head; 64-guide column; 65-compression spring. DETAILED DESCRIPTION

[0036] The specific embodiments of the embodiments of the present application are described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are merely intended to illustrate and explain the embodiments of the present application, and are not intended to limit the embodiments of the present application.

[0037] Figure 1 is a structural schematic view of the bolt insertion monitoring device for wind power blade provided by the present application; Figure 2 is Figure 1 a sectional view of the bolt insertion monitoring device for wind power blade in A-A direction of Figure 3 is a schematic view of the base of the bolt insertion monitoring device for wind power blade being adsorbed on the designated reference member.

[0038] As shown in Figures 1-3 , the present application provides a bolt insertion monitoring device for wind power blade, which is used for monitoring whether the bolt connecting the wind power blade and the hub is inserted into the corresponding screw hole in the wind power blade to the set depth, comprising:

[0039] a base 1 having a lower horizontal surface and an upper horizontal surface which are parallel to each other, the upper horizontal surface of the base 1 being adsorbed on the designated reference member on the wind power blade;

[0040] a guide sleeve 2 being fixed on the lower horizontal surface of the base 1, and an extension hole being formed on one side of the guide sleeve 2, the extension direction of the extension hole being parallel to the lower horizontal surface of the base 1;

[0041] The slide rail 3, which is matched with the extension hole size, has a movable end and a connecting end, the movable end is slidably sleeved in the extension hole of the guide sleeve 2, and the connecting end is exposed outside the extension hole, and the slide rail 3 can move along the extension direction of the extension hole;

[0042] The laser alarm 4 is arranged at the connecting end of the slide rail 3, is used for emitting a laser beam to a bolt screwed into a screw hole of the wind power blade, and receiving, analyzing and processing the laser beam reflected from the bolt, judging whether the bolt is screwed into the corresponding screw hole of the wind power blade to a set depth according to the reflection intensity and reflectivity of the reflected laser beam obtained after the analysis and processing, wherein if the reflection intensity and reflectivity of the reflected laser beam meet preset conditions, the bolt is not screwed into the set depth, and the laser alarm 4 does not issue an alarm prompt, and if the reflection intensity and reflectivity of the reflected laser beam do not meet the preset conditions, the bolt is screwed into the set depth, and the laser alarm 4 issues an alarm prompt.

[0043] The application provides a wind turbine blade bolt screwing monitoring device, the upper horizontal surface of the base 1 is connected with a specified reference element on the wind turbine blade, the specified reference element is determined according to the actual monitoring environment, the guide sleeve 2 is fixedly connected with the lower horizontal surface of the base 1, the movable end of the sliding rail 3 is slidingly installed in the extension hole of the guide sleeve 2, and the sliding rail 3 can move along the extension direction of the extension hole, the connecting end of the sliding rail 3 is provided with a laser alarm 4, the laser alarm 4 generates a laser beam to the bolt screwed into the screw hole on the wind turbine blade, part of the laser beam is returned to the laser alarm 4 according to the reflection law after the laser beam is irradiated on the bolt, the laser alarm 4 analyzes and processes the reflection intensity and reflectivity of the reflected laser beam after receiving the reflected laser beam, and whether the reflection intensity and reflectivity of the reflected laser beam obtained after the analysis and processing meet the preset condition is determined, wherein the preset condition is set to be the same as the reflection intensity and reflectivity of the reflected laser beam reflected from the bolt; the light point position of the laser beam on the bolt where the laser alarm 4 initially falls can be adjusted according to the set depth of the bolt screwed into the screw hole, so that the laser beam is shot to the rear of the bolt through the bolt end head after the bolt is screwed into the screw hole to the set depth. If the reflection intensity and reflectivity of the reflected laser beam meet the preset condition, it indicates that the bolt has not been screwed to the set depth in the screw hole, at this time, the laser alarm 4 does not issue an alarm prompt, if the reflection intensity and reflectivity of the reflected laser beam do not meet the preset condition, the laser alarm 4 issues an alarm prompt, reminding the staff that the bolt has been rotated in place and stopping the bolt from being screwed; the reflection intensity of the laser beam is related to the material, color, surface roughness of the object irradiated by the laser, the wavelength and frequency of the laser beam, the power and angle of the laser beam and environmental factors, and the reflectivity of the laser beam is related to the wavelength, temperature, incident angle and polarization plane, the laser beam is shot on the bolt, the light point of the laser beam on the bolt changes on the bolt in the process of the bolt being screwed into the screw hole, when the bolt is screwed to the set depth in the screw hole, at this time, the laser beam is shot to the object behind the bolt through the upper part of the bolt end head, the reflection intensity and reflectivity of the laser beam reflected from the rear object are different from the reflection intensity and reflectivity of the laser beam reflected from the bolt, so that it can be determined that the bolt has been screwed to the set depth in the screw hole, the screwing depth of the bolt is monitored through the wind turbine blade bolt screwing monitoring device, and the screwing depth and exposed length exposed outside the screw hole of the bolt can be more accurately controlled, and the problem that the set depth of the double-headed bolt screwed into the pre-buried bolt sleeve of the wind turbine blade is difficult to accurately control in the prior art is solved.

[0044] In order to monitor whether the bolt is screwed to the set depth in the screw hole in the process of the bolt being screwed into the screw hole, the laser alarm 4 is used for monitoring, and the laser alarm 4 comprises:

[0045] a laser emitter, configured to emit a laser beam to the bolt screwed into the corresponding screw hole on the wind turbine blade;

[0046] a receiver for receiving the laser beam reflected from the bolt;

[0047] a signal processor connected with the photoelectric sensor signal, for analyzing and processing the reflected laser beam, and judging whether the bolt is screwed to the set depth of the corresponding bolt hole according to the reflection intensity and reflectivity of the reflected laser beam obtained after analysis and processing, if the reflection intensity and reflectivity of the reflected laser beam meet the preset condition, the bolt is not screwed to the set depth, the signal processor does not issue an alarm instruction, if the reflection intensity and reflectivity of the reflected laser beam do not meet the preset condition, the bolt is screwed to the set depth, the signal processor issues an alarm instruction;

[0048] an alarm display electrically connected with the signal processor, for issuing an alarm prompt according to the alarm instruction.

[0049] The laser emitter of the laser alarm 4 emits a laser beam to the bolt, part of the laser beam is reflected back to the receiver after hitting the bolt, the signal processor analyzes and processes the reflection intensity and reflectivity of the reflected laser beam received by the receiver, and judges whether the reflection intensity and reflectivity of the reflected laser beam meet the preset condition, the preset condition is set to be the same as the reflection intensity and reflectivity of the reflected laser beam reflected from the bolt, if the reflection intensity and reflectivity of the reflected laser beam meet the preset condition, it indicates that the laser beam always hits the bolt, if the reflection intensity and reflectivity of the reflected laser beam do not meet the preset condition, it indicates that the laser beam no longer irradiates on the bolt, at this time, the signal processor issues an alarm instruction to the alarm display, the alarm display alarms according to the alarm instruction, indicating that the bolt has been screwed to the set depth in the bolt hole at this time, the alarm display can be an audible and visual alarm, emitting light and sound to remind the staff according to the alarm instruction.

[0050] In one embodiment, as shown in Figure 1 The guide sleeve 2 is further provided with a limiting hole which is in communication with the extension hole and perpendicular to the extension direction of the extension hole.

[0051] The screwing monitoring device further comprises a limiting pin 5 which is screwed in the limiting hole and used for limiting the position of the sliding rail 3 in the extension hole.

[0052] The base 1 is made of magnetic material. A groove is formed in the upper horizontal surface for enhancing the connection strength between the base 1 and the designated reference member.

[0053] A scale line is formed on the sliding rail 3.

[0054] The laser alarm 4 further comprises a laser mounting base 41 having a receiving cavity, the laser mounting base 41 is connected with the connecting end of the slide rail 3, the laser emitter, the receiver and the signal processor are all arranged in the receiving cavity of the laser mounting base 41, and the alarm display is arranged outside the receiving cavity.

[0055] The slide rail 3 can move along the extension direction of the extension hole, when the laser alarm 4 is used to monitor whether the bolt is screwed into the screw hole to the set depth, the slide rail 3 is moved to a specified position so that the laser beam emitted by the laser alarm 4 irradiates on the bolt, in order to avoid the slide rail 3 moving arbitrarily and affecting the monitoring result of the laser alarm 4, a limiting hole communicating with the extension hole is arranged on the guide sleeve 2, as shown in Figure 1 The extension direction of the limiting hole is perpendicular to the extension direction of the extension hole, the limiting pin 5 is screwed in the limiting hole, when the position of the slide rail 3 in the extension hole is determined, the limiting pin 5 is screwed in the limiting hole so that the limiting pin 5 abuts against the slide rail 3 to limit the movement of the slide rail 3 in the extension hole; in order to facilitate the connection of the base 1 with the specified reference element, the base 1 is made of magnetic material, so that the base 1 has magnetism and can be adsorbed on the metal surface, facilitating the fixation of the base 1 on the specified reference element, and the specified reference element needs to be an iron product that can be attracted by a magnet; in order to enrich the use function of the slide rail 3, a scale line is arranged on the slide rail 3, so that the slide rail 3 can be used as a ruler, facilitating the subsequent re-measurement of the exposed length of the bolt exposed outside the screw hole; after the base 1 is adsorbed on the specified reference element, in order to enhance the connection strength of the base 1 and the specified reference element, a groove is arranged on the upper horizontal surface of the base 1, and the depth of the groove is determined according to the actual thickness of the base 1, thereby enhancing the adsorption strength of the base 1.

[0056] In order to facilitate the arrangement of the laser alarm 4 on the connecting end of the slide rail 3, the laser mounting base 41 is arranged on the connecting end of the slide rail 3, the laser emitter, the receiver and the signal processor are all arranged in the receiving cavity of the laser mounting base, the alarm display is electrically connected with the signal processor and is arranged outside the receiving cavity, the transmitting via hole and the receiving via hole are arranged on the receiving cavity, the laser emitter emits the laser beam to the bolt through the transmitting via hole, the reflected laser beam returns to the receiver through the receiving via hole, and the laser alarm 4 further comprises a power supply which is electrically connected with the laser emitter, the receiver, the signal processor and the alarm display, as shown in Figure 1 The power supply is arranged on the guide sleeve 2, the power supply is a battery, the battery compartment is arranged on the guide sleeve 2, and the battery is installed in the battery compartment, thereby supplying power to the laser emitter, the receiver, the signal processor and the alarm display.

[0057] In order to avoid the disappearance of the magnetism of the base 1, resulting in that the base 1 cannot be stably adsorbed on the specified reference element, the screwing monitoring device further comprises an auxiliary fixing assembly 6 which is connected with the guide sleeve 2 and is detachably connected with the specified reference element.

[0058] The auxiliary fixing assembly 6 comprises a crossbar 61, a pair of clamping arms 62 and a pair of clamping heads 63.

[0059] The pair of clamping arms 62 are symmetrically arranged on the guide sleeve 2, the upper connecting ends of the pair of clamping arms 62 are connected by the crossbar 61, and the lower connecting ends of the pair of clamping arms 62 are respectively hinged to the guide sleeve 2.

[0060] One clamping head 63 is arranged on one side of each clamping arm 62 facing the other clamping arm 62.

[0061] The auxiliary fixing assembly 6 further comprises a pair of guide columns 64 and a pair of compression springs 65.

[0062] One guide column 64 is arranged on one side of each clamping arm 62 facing the other clamping arm 62, and a guide hole with a shape matching that of the guide column 64 is formed in the clamping head 63 and is sleeved on the guide column 64.

[0063] One compression spring 65 is arranged between the guide column 64 and the bottom of the guide hole in each clamping head 63, and the compression spring 65 is connected to the corresponding guide column 64 and the corresponding clamping head 63.

[0064] Protective pads are arranged on the clamping surfaces of the pair of clamping heads 63 facing each other.

[0065] As Figure 2As shown, if the base 1 loses or weakens its magnetism, causing the base 1 to fail to be adsorbed on the designated reference element, the auxiliary fixing assembly 6 can be used to connect the screw-in monitoring device with the designated reference element, facilitating the continuation of the monitoring work. A pair of clamping arms 62 are symmetrically arranged, and the lower connecting end of each clamping arm 62 is hinged to the guide sleeve 2. The upper connecting ends of the pair of clamping arms 62 are connected by a cross bar 61. A chuck 63 is arranged on one side of each clamping arm 62 facing the other clamping arm 62. The chuck 63 can be detachably installed on the corresponding clamping arm 62. The chuck 63 can be replaced according to the size and shape of the designated reference element to enable the chuck 63 to firmly clamp the designated reference element. When the auxiliary fixing assembly 6 is used to clamp the designated reference element, the pair of clamping arms 62 are rotated to gradually approach each other, clamping the designated reference element between the pair of chucks 63. Then the pair of clamping arms 62 are connected by the cross bar 61. To facilitate clamping of designated reference elements of different sizes, a guide column 64 is arranged on one side of each clamping arm 62 facing the other clamping arm 62, and a guide hole matching the guide column 64 is formed in each chuck 63. The guide column 64 is embedded in the guide hole, and the chuck 63 can move along the extension direction of the corresponding guide column 64. A compression spring 65 is arranged between the bottom of the guide hole and the guide column 64. The two ends of the compression spring 65 are respectively connected to the guide column 64 and the corresponding chuck 63. The guide column 64 can limit the movement direction of the chuck 63. Under the compression force of the compression spring 65, the pair of chucks 63 clamp the designated reference element when clamping the designated reference element.

[0066] In one embodiment, in order to monitor whether the blade root stud on the wind power blade is screwed into the embedded stud sleeve to the set depth, the base 1 is adsorbed on the adjacent stud that has been screwed into the embedded stud sleeve, here, the stud that has been screwed into the embedded stud sleeve is taken as the specified reference piece, the embedded stud sleeve has a threaded hole, the laser beam is emitted to the stud about to be screwed into the embedded stud sleeve through the laser emitter of the laser alarm 4, the position of the light spot on the stud to which the laser beam is emitted is controlled, the reflected laser beam is received through the receiver, the position of the light spot on the stud to which the laser beam falls is set on the set point on the stud, the distance between the set point and the end of the stud exposed to the embedded stud sleeve is the same as the set depth, as the screwing depth of the stud in the embedded stud sleeve gradually changes, the relative change between the set point on the stud and the position of the light spot on the stud to which the laser beam falls, when the stud is screwed to the set depth, at this time, the stud cannot block the laser, the laser beam continues to irradiate to the object behind the stud from above the end of the stud, part of the laser beam reflected from the object behind the stud is reflected back to the receiver or no laser beam is reflected back to the receiver due to the distance, the reflection intensity and reflectivity of the laser beam reflected from the object behind the stud are different from the reflection intensity and reflectivity of the laser beam reflected from the stud, that is, the reflection intensity and reflectivity of the reflected laser beam do not meet the preset adjustment, at this time, the stud has been screwed into the embedded stud sleeve to the set depth, the laser alarm 4 issues an alarm prompt, prompting the worker that the stud has been screwed in place, stopping continuing to screw the stud, the screwing precision of the stud is controlled, the screwing precision of the stud screwed into the embedded stud sleeve is controlled, correspondingly, the exposed length of the stud exposed outside the embedded stud sleeve is also better controlled.

[0067] The wind power blade bolt screwing monitoring device provided by the application is used for monitoring whether the bolt is screwed to the set depth of the corresponding screw hole when the bolt connecting the wind power blade and the hub is screwed into the corresponding screw hole on the wind power blade, a guide sleeve is connected on the lower horizontal surface of the base, the upper horizontal surface of the base is adsorbed and connected with the specified reference element on the wind power blade, the movable end of the sliding pipe is slidingly sleeved in the extension hole of the guide sleeve, the laser alarm is arranged on the connecting end of the sliding rail, the laser alarm emits a laser beam to the bolt screwed into the screw hole, part of the laser beam returns to the laser alarm according to the reflection law after the laser beam hits the bolt, the laser alarm receives and analyzes the reflected laser beam, if the reflection intensity and reflectivity of the reflected laser beam do not meet the preset condition, the bolt is screwed to the set depth of the corresponding screw hole, at this time, the laser alarm gives an alarm prompt, if the reflection intensity and reflectivity of the reflected laser beam meet the preset condition, the bolt is not screwed to the set depth of the corresponding screw hole, the laser alarm does not give an alarm prompt, the laser alarm gives an alarm prompt, which facilitates the staff to know that the bolt has been screwed in place in time, and the staff stops screwing the bolt, the screwing depth of the bolt is monitored in the bolt installation process through the screwing monitoring device, the screwing depth and the exposed length exposed outside the screw hole can be more accurately controlled, and the problem that it is difficult to accurately control the set depth of the double-headed bolt screwed into the embedded bolt sleeve of the wind power blade in the prior art is solved.

[0068] The above describes the optional embodiments of the embodiments of the application in detail in combination with the drawings, but the embodiments of the application are not limited to the specific details in the above-described embodiments, and various simple modifications can be made to the technical solutions of the embodiments of the application within the technical concept of the embodiments of the application, and these simple modifications all belong to the protection scope of the embodiments of the application.

[0069] In addition, it should be noted that each specific technical feature described in the above specific embodiments can be combined in any appropriate manner without contradiction. In order to avoid unnecessary repetition, the embodiments of the application will not further describe various possible combinations.

[0070] In addition, various different embodiments of the embodiments of the application can also be combined in any manner, as long as they do not contradict the idea of the embodiments of the application, and they should also be considered as disclosed by the embodiments of the application.

Claims

1. A wind turbine blade bolt screw-in monitoring device, used to monitor whether the bolts connecting the wind turbine blade and the hub are screwed into the set depth of the corresponding screw holes on the wind turbine blade, characterized in that: Connected to the designated reference parts on the wind turbine blade, including: A base (1) has an upper horizontal surface and a lower horizontal surface, and the upper horizontal surface of the base (1) is adsorbed on a designated reference part on the wind turbine blade; A guide sleeve (2) is fixed on the lower horizontal surface of the base (1), and an extension hole is provided on one side of the guide sleeve (2), the extension direction of the hole being parallel to the lower horizontal surface of the base (1); A slide rail (3) having a size matching that of the extension hole, having a movable end and a connecting end, wherein the movable end is slidably mounted in the extension hole and the connecting end is exposed outside the extension hole, and the slide rail (3) is capable of moving along the extension direction of the extension hole; A laser alarm (4) is provided at the connection end of the slide rail (3) and is used to emit a laser beam to a bolt screwed into a screw hole on a wind turbine blade, and to receive and analyze the laser beam reflected from the bolt, and to judge whether the bolt is screwed into the set depth of the corresponding screw hole on the wind turbine blade according to the reflection intensity and reflectivity of the reflected laser beam obtained after the analysis and processing, wherein if the reflection intensity and reflectivity of the reflected laser beam meet the preset conditions, the bolt is not screwed into the set depth, and the laser alarm (4) does not issue an alarm prompt; if the reflection intensity and reflectivity of the reflected laser beam do not meet the preset conditions, the bolt is screwed into the set depth, and the laser alarm (4) issues an alarm prompt; An auxiliary fixing assembly (6) is connected to the guide sleeve (2) and is detachably connected to a designated reference member; The auxiliary fixing assembly (6) comprises: a crossbar (61), a pair of clamping arms (62) and a pair of clamping heads (63); A pair of clamping arms (62) are symmetrically arranged on the guide sleeve (2), the upper connecting ends of the pair of clamping arms (62) are connected through a cross bar (61), and the lower connecting ends of the pair of clamping arms (62) are respectively hinged to the guide sleeve (2); A clamping head (63) is provided on one side of a clamping arm (62) facing the other clamping arm (62); The auxiliary fixing assembly (6) further includes: a pair of guide posts (64) and a pair of compression springs (65); A guide post (64) is provided on one side of a clamping arm (62) facing the other clamping arm (62), and a guide hole that matches the shape of the guide post (64) is provided on the clamping head (63), and the guide hole is sleeved on the guide post (64); A compression spring (65) is provided between the guide post (64) and the bottom of the guide hole on the corresponding chuck (63), and the compression spring (65) is connected to the corresponding guide post (64) and the chuck (63).

2. The wind turbine blade bolt screw-in monitoring device according to claim 1, characterized in that: The laser alarm (4) comprises: A laser transmitter, configured to transmit a laser beam toward a bolt screwed into a corresponding screw hole on a wind turbine blade; a receiver for receiving the laser beam reflected from the bolt; a signal processor connected to the photoelectric sensor signal, used to analyze and process the reflected laser beam, and judge whether the bolt is screwed into the set depth of the corresponding screw hole based on the reflection intensity and reflectivity of the reflected laser beam obtained after the analysis and processing; if the reflection intensity and reflectivity of the reflected laser beam meet the preset conditions, the bolt is not screwed into the set depth, and the signal processor does not issue an alarm instruction; if the reflection intensity and reflectivity of the reflected laser beam do not meet the preset conditions, the bolt is screwed into the set depth, and the signal processor issues an alarm instruction; The alarm display is electrically connected to the signal processor and is used to issue an alarm prompt according to the alarm instruction.

3. The wind turbine blade bolt screw-in monitoring device according to claim 1, characterized in that: The guide sleeve (2) is further provided with a limiting hole which is in communication with the extension hole and is perpendicular to the extension direction of the extension hole; The screw-in monitoring device further comprises a limiting pin (5) screwed into the limiting hole and used for limiting the position of the slide rail (3) in the extension hole.

4. The wind turbine blade bolt screw-in monitoring device according to claim 1, characterized in that: The base (1) is made of magnetic material.

5. The wind turbine blade bolt screw-in monitoring device according to claim 4, characterized in that: A groove is provided on the upper horizontal surface for enhancing the connection strength between the base (1) and the designated reference member.

6. The wind turbine blade bolt screw-in monitoring device according to claim 1, characterized in that: There are scale lines marked on the slide rail (3).

7. The wind turbine blade bolt screw-in monitoring device according to claim 2, characterized in that: The laser alarm (4) further comprises: a laser mounting seat (41) having an accommodating cavity, the laser mounting seat (41) being connected to the connecting end of the slide rail (3), the laser transmitter, the receiver and the signal processor being arranged in the accommodating cavity of the laser mounting seat (41), and the alarm display being arranged outside the accommodating cavity.

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