Screw-in monitoring device for wind power blade bolt

Abstract

The invention provides a screwing-in monitoring device for a wind power blade bolt, and relates to the technical field of wind power generation. Comprising a base, the upper horizontal plane of which is connected with a specified reference piece; the guide sleeve is fixed on the lower horizontal plane of the base, and an extension hole of which the extension direction is parallel to the lower horizontal plane of the base is formed in one side of the guide sleeve; the sliding rail is provided with a movable end and a connecting end, and the sliding rail can move in the extending direction of the extending hole; the laser alarm is arranged at the connecting end of the sliding rail and is used for emitting a laser beam to the bolt, receiving, analyzing and processing the laser beam reflected from the bolt and judging whether the bolt is screwed into the set depth of the corresponding screw hole or not according to the reflection intensity and the reflectivity of the reflected laser beam, and if the reflection intensity and the reflectivity of the reflected laser beam do not meet the preset conditions, the laser alarm gives an alarm prompt. The problem that in the prior art, when a double-end bolt is screwed into an embedded bolt sleeve of a wind power blade, the set depth of the double-end bolt screwed into the embedded bolt sleeve is difficult to accurately control is solved.

Description

Technical Field

[0001] The invention relates to the technical field of wind power generation, and in particular to a wind power blade bolt screw-in monitoring device. Background Art

[0002] At present, the blades of large wind turbines are connected to the hub of wind turbines by a connection pair consisting of a pre-embedded bolt sleeve at the blade root and a stud bolt at the blade root. When the wind turbine blades are transported to the project site, the connection between the pre-embedded bolt sleeve at the blade root and the stud bolt at the blade root is completed. The exposed length of the stud bolt needs to be controlled on site to ensure the internal engagement size of the embedded bolt sleeve and the stud bolt. The tolerance range of the exposed length control is only (0,1) mm, and it is difficult to accurately screw in the specified length at one time. If the assembly requirements are not met, bolt breakage is very likely to occur, which will eventually lead to blade breakage or collapse, causing huge economic losses.

[0003] Therefore, there is an urgent need for a device that can solve at least one of the above problems. Summary of the invention

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

[0005] In order to achieve the above-mentioned object, the present invention provides a wind turbine blade bolt screwing monitoring device, which is used to monitor whether the bolts connecting the wind turbine blade and the hub are screwed into the set depth of the corresponding screw hole on the wind turbine blade and connected with the specified reference part on the wind turbine blade, including: The base has a lower horizontal surface and an upper horizontal surface which are parallel to each other, and the upper horizontal surface of the base is adsorbed on a designated reference part on the wind turbine blade; The guide sleeve is fixed on the lower horizontal plane of the base, and an extension hole is opened on one side of the guide sleeve, and the extension direction is parallel to the lower horizontal plane of the base; The slide rail matches the size of the extension hole, and has a movable end and a connecting end. The movable end is slidably sleeved in the extension hole of the guide sleeve, and the connecting end is exposed outside the extension hole. The slide rail can move along the extension direction of the extension hole. 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 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 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.

[0006] Specifically, the laser alarm comprises: A laser transmitter, used for emitting a laser beam to a bolt screwed into a corresponding screw hole on a wind turbine blade; a receiver, for receiving the laser signal reflected from the bolt; A signal processor is connected to the photoelectric sensor signal, and is used to analyze and process the laser signal, and judge whether the bolt is screwed into the set depth of the corresponding screw hole according to the processing result, and issue an alarm instruction after judging that the bolt is screwed into the set depth of the corresponding screw hole; The alarm display is electrically connected to the signal processor and is used to issue an alarm prompt according to the alarm instruction.

[0007] Specifically, a limiting hole is provided in the guide sleeve, which is connected 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, which is screwed into the limiting hole and is used to limit the position of the slide rail in the extension hole.

[0008] Specifically, the base is made of magnetic material.

[0009] Specifically, a groove is provided on the upper horizontal surface to enhance the connection strength between the base and the designated reference member.

[0010] Specifically, scale lines are provided on the slide rail.

[0011] Specifically, the laser alarm also includes: a laser mounting seat having 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.

[0012] Specifically, it also includes: an auxiliary fixing component, which is connected to the guide sleeve and is detachably connected to the designated reference part.

[0013] Specifically, the auxiliary fixing assembly includes: a crossbar, a pair of clamping arms and a pair of clamping heads; A pair of clamping arms are symmetrically arranged on the guide sleeve, the upper connecting ends of the pair of clamping arms are connected by a cross bar, and the lower connecting ends of the pair of clamping arms are respectively hinged to the guide sleeve; A clamping head is arranged on one side of a clamping arm facing the other clamping arm.

[0014] Specifically, the auxiliary fixing assembly further includes: a pair of guide posts and a pair of compression springs; A guide post is arranged on one side of a clamping arm facing the other clamping arm, and a guide hole matching the shape of the guide post is opened on the clamping head, and the guide hole is sleeved on the guide post; A compression spring is arranged between the guide column and the bottom of the guide hole on the corresponding clamp, and the compression spring is connected with the corresponding guide column and the clamp.

[0015] The wind turbine blade bolt screw-in monitoring device provided by the present invention, when the bolts connecting the wind turbine blade and the hub are screwed into the corresponding screw holes on the power distribution blades, in order to monitor whether the bolts are screwed into the corresponding set depth of the screw holes, a guide sleeve is connected to the lower horizontal surface of the base, the upper horizontal surface of the base is adsorbed and connected with the designated reference part on the wind turbine blade, the movable end of the slide tube is slidably sleeved in the extension hole of the guide sleeve, and a laser alarm is arranged at the connecting end of the slide rail, the laser alarm emits a laser beam to the bolt screwed into the screw hole, after the laser beam hits the bolt, part of the laser beam returns to the laser alarm according to the law of reflection, the laser alarm receives the reflected laser beam and analyzes and processes it, if the reflection intensity and reflectivity of the reflected laser beam do not meet the preset Condition, the bolt is screwed into the set depth of the corresponding screw hole, at this time the laser alarm issues an alarm prompt, if the reflection intensity and reflectivity of the reflected laser beam meet the preset conditions, the bolt is not screwed into the set depth of the corresponding screw hole, the laser alarm does not issue an alarm prompt, the laser alarm issues an alarm prompt, it is convenient for the staff to know in time that the bolt has been screwed into place and stop tightening the bolt. The screw-in monitoring device can monitor the screw-in depth of the bolt during the bolt installation process, and can more accurately control the screw-in depth of the bolt and the exposed length outside the screw hole, which solves the problem in the prior art that it is difficult to accurately control the set depth of the stud bolt into the embedded bolt sleeve of the wind turbine blade when the stud bolt is screwed into the embedded bolt sleeve.

[0016] Other features and advantages of the embodiments of the present invention will be described in detail in the subsequent detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings are used to provide a further understanding of the embodiments of the present invention and constitute a part of the specification. Together with the following specific implementations, they are used to explain the embodiments of the present invention, but do not constitute a limitation on the embodiments of the present invention. In the accompanying drawings: Figure 1 It is a structural schematic diagram of a wind turbine blade bolt screw-in monitoring device provided by the present invention; Figure 2 yes Figure 1 A cross-sectional view taken along the AA direction in a wind turbine blade bolt screw-in monitoring device; Figure 3 It is a schematic diagram of the base of the wind turbine blade bolt screw-in monitoring device provided by the present invention being adsorbed on a designated reference piece.

[0018] Description of Reference Numerals 1-base; 2-guide sleeve; 3-slide rail; 4-laser alarm; 5-limiting pin; 6-auxiliary fixing assembly; 41-laser mounting seat; 61-cross bar; 62-clamping arm; 63-chuck; 64-guide column; 65-compression spring. DETAILED DESCRIPTION

[0019] The specific implementation of the embodiment of the present invention is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described here is only used to illustrate and explain the embodiment of the present invention, and is not used to limit the embodiment of the present invention.

[0020] Figure 1 It is a structural schematic diagram of a wind turbine blade bolt screw-in monitoring device; Figure 2 yes Figure 1 A cross-sectional view of the AA direction in the screw-in monitoring device for the wind turbine blade bolts. Figure 3 It is a schematic diagram showing that the base of a wind turbine blade bolt screw-in monitoring device is adsorbed on a designated reference part.

[0021] like Figure 1-Figure 3 As shown, the present invention provides a wind turbine blade bolt screwing monitoring device, which is used to monitor whether the bolts connecting the wind turbine blade and the hub are screwed into the set depth of the corresponding screw hole on the wind turbine blade, comprising: The base 1 has a lower horizontal surface and an upper horizontal surface which are parallel to each other, and the upper horizontal surface of the base 1 is adsorbed on a designated reference part on the wind turbine blade; The guide sleeve 2 is fixed on the lower horizontal surface of the base 1, and an extension hole is opened on one side of the guide sleeve 2, and the extension direction is parallel to the lower horizontal surface of the base 1; The slide rail 3 matches the size of the extension hole, 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; The laser alarm 4 is arranged at the connecting end of the slide rail 3, and is used for emitting a laser beam to the bolt screwed into the screw hole on the wind turbine blade, and receiving, analyzing and processing the laser beam reflected from the bolt, and judging 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. If the reflection intensity and reflectivity of the reflected laser beam meet the preset conditions and the bolt is not screwed into the set depth, the laser alarm 4 will not issue an alarm prompt; if the reflection intensity and reflectivity of the reflected laser beam do not meet the preset conditions and the bolt is screwed into the set depth, the laser alarm 4 will issue an alarm prompt.

[0022] The present invention provides a wind turbine blade bolt screwing monitoring device, wherein the upper horizontal surface of the base 1 is connected to a designated reference part on the wind turbine blade, the designated reference part is determined according to the actual monitoring environment, the guide sleeve 2 is fixedly connected to the lower horizontal surface of the base 1, the movable end of the slide rail 3 is slidably installed in the extension hole of the guide sleeve 2, and the slide rail 3 can move along the extension direction of the extension hole, and the connection end of the slide rail 3 is provided with a laser alarm 4, the laser alarm 4 emits a laser beam to the bolt screwed into the screw hole on the wind turbine blade, and after the laser beam is irradiated on the bolt, part of the laser beam will return to the laser alarm according to the reflection law Device 4, after receiving the reflected laser beam, the laser alarm 4 analyzes and processes the reflection intensity and reflectivity of the reflected laser beam to determine whether the reflection intensity and reflectivity of the reflected laser beam obtained after analysis and processing meet the preset conditions. Here, the preset conditions are set to be the same as the reflection intensity and reflectivity of the laser beam reflected from the bolt; the light spot position of the laser beam initially falling on the bolt by the laser alarm 4 can be adjusted according to the set depth of the bolt screwed into the screw hole, to ensure that the laser beam is emitted to the rear of the bolt through the bolt end after the bolt is screwed into the set depth in the screw hole. If the reflection intensity and reflectivity of the reflected laser beam meet the preset conditions, it means that the bolt has not been screwed into 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 conditions, the laser alarm 4 issues an alarm prompt to remind the staff that the bolt has been rotated into place and to stop tightening the bolt. The reflection intensity of the laser beam is related to the material, color, surface roughness, wavelength and frequency of the laser beam, power and angle of the laser beam, and environmental factors of the object irradiated by the laser. The reflectivity of the laser beam is related to the wavelength, temperature, incident angle and polarization plane. The laser beam hits the bolt. During the process of screwing the bolt into the screw hole, the light spot of the laser beam falling on the bolt is continuously moved by the bolt. Changes occur on the bolt when the bolt is screwed into the screw hole. When the bolt is screwed into the set depth of the screw hole, the laser beam is emitted from the top of the bolt end to the object behind the bolt. The reflection intensity and reflectivity of the laser beam reflected by the rear object are different from the reflection intensity and reflectivity of the laser beam reflected from the bolt. In this way, it can be determined that the bolt has been screwed into the set depth of the screw hole. The screw-in depth of the bolt is monitored by the screw-in monitoring device for wind turbine blade bolts provided in the present application, and the screw-in depth of the bolt and the exposed length outside the screw hole can be more accurately controlled, thereby solving the problem in the prior art that it is difficult to accurately control the set depth of the stud bolt when the stud bolt is screwed into the embedded bolt sleeve of the wind turbine blade.

[0023] In order to monitor whether the bolt is screwed into the screw hole to the set depth during the process of screwing the bolt into the screw hole, a laser alarm 4 is used for monitoring, and the laser alarm 4 includes: A laser transmitter, used for emitting a laser beam to 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 is connected to the photoelectric sensor signal, and is 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 according to 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.

[0024] The laser transmitter of the laser alarm 4 emits a laser beam to the bolt. After the laser beam hits the bolt, part of the laser beam will be reflected back to the receiver. The signal processor analyzes and processes the reflection intensity and reflectivity of the reflected laser beam received by the receiver, and determines whether the reflection intensity and reflectivity of the reflected laser beam meet the preset conditions. The preset conditions are set to be the same as the reflection intensity and reflectivity of the laser beam reflected from the bolt. If the reflection intensity and reflectivity of the reflected laser beam meet the preset conditions, 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 conditions, it indicates that the laser beam will no longer irradiate the bolt. At this time, the signal processor sends an alarm instruction to the alarm display, and the alarm display alarms according to the alarm instruction, indicating that at this time, the bolt has been screwed into the set depth in the screw hole. The alarm display can be an audible and visual alarm, which emits light and sound according to the alarm instruction to remind the staff.

[0025] In one embodiment, Figure 1 As shown, the guide sleeve 2 is further provided with a limiting hole which is connected 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 for limiting the position of the slide rail 3 in the extension hole.

[0026] The base 1 is made of magnetic material. A groove is provided on the upper horizontal surface to enhance the connection strength between the base 1 and the designated reference piece.

[0027] The slide rail 3 is provided with scale lines.

[0028] The laser alarm 4 also includes: a laser mounting seat 41 having a receiving cavity, the laser mounting seat 41 is connected to the connecting end of the slide rail 3, the laser transmitter, receiver and signal processor are all arranged in the receiving cavity of the laser mounting seat 41, and the alarm display is arranged outside the receiving cavity.

[0029] 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 set depth of the screw hole, the slide rail 3 is moved to a specified position so that the laser beam emitted by the laser alarm 4 can irradiate the bolt. In order to prevent the slide rail 3 from moving arbitrarily and affecting the monitoring result of the laser alarm 4, a limit hole connected to the extension hole is opened on the guide sleeve 2, such as Figure 1 As shown, the extension direction of the limit hole is perpendicular to the extension direction of the extension hole, and the limit pin 5 is screwed into the limit hole. When the position of the slide rail 3 in the extension hole has been determined, the limit pin 5 is screwed into the limit hole to make the limit pin 5 press against the slide rail 3 to limit the movement of the slide rail 3 in the extension hole; in order to facilitate the connection between the base 1 and the designated reference part, the base 1 is made of magnetic material, so that the base 1 has magnetism and can be adsorbed on the metal surface, which is convenient for the base 1 to be fixed on the designated reference part. The designated reference part must be an iron product that can be attracted by a magnet; in order to enrich the use function of the slide rail 3, scale lines are opened on the slide rail 3, so that the slide rail 3 can be used as a ruler, which is convenient for re-measuring the exposed length of the bolt exposed outside the screw hole; after the base 1 is adsorbed on the designated reference part, in order to enhance the connection strength between the base 1 and the designated reference part, a groove is opened on the upper horizontal surface of the base 1, and the depth of the opened groove is determined according to the actual thickness of the base 1, thereby enhancing the adsorption strength of the base 1.

[0030] In order to facilitate the arrangement of the laser alarm 4 at the connection end of the slide rail 3, a laser mounting seat 41 is arranged at the connection end of the slide rail 3, the laser transmitter, the receiver and the signal processor are all arranged in the accommodating cavity of the laser mounting seat, the alarm display is electrically connected to the signal processor and is arranged outside the accommodating cavity, and an emitting through hole and a receiving through hole are opened on the accommodating cavity. The laser transmitter emits a laser beam to the bolt through the emitting through hole, and the reflected laser beam returns to the receiver from the receiving through hole. The laser alarm 4 also includes a power supply, which is electrically connected to the laser transmitter, the receiver, the signal processor and the alarm display, such as Figure 1 As shown, the power source is arranged on the guide sleeve 2. The power source is a battery. A battery compartment is arranged on the guide sleeve 2. The battery is installed in the battery compartment. The laser transmitter, receiver, signal processor and alarm display are powered by the battery.

[0031] In order to prevent the magnetism of the base 1 from disappearing, which results in the base 1 being unable to be stably adsorbed on the designated reference part, the screw-in monitoring device further includes: an auxiliary fixing component 6, which is connected to the guide sleeve 2 and is detachably connected to the designated reference part.

[0032] The auxiliary fixing assembly 6 includes: a crossbar 61, a pair of clamping arms 62 and a pair of clamps 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 by 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 the clamping arm 62 facing the other clamping arm 62 .

[0033] 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 the clamping arm 62 facing the other clamping arm 62, and a guide hole matching 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 each chuck 63 , and the compression spring 65 is connected to the corresponding guide post 64 and the corresponding chuck 63 .

[0034] Protection pads are laid on the facing clamping surfaces of the pair of clamps 63 .

[0035] like Figure 2 As shown, if the magnetism of the base 1 disappears or weakens, resulting in the base 1 being unable to be adsorbed on the designated reference part, the screw-in monitoring device can be connected to the designated reference part through the auxiliary fixing component 6, so as to facilitate the monitoring work to continue. 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, and the upper connecting ends of the pair of clamping arms 62 are connected through a cross bar 61. A clamp 63 is arranged on the side of each clamping arm 62 facing the other clamping arm 62, and the clamp 63 is detachably installed on the corresponding clamping arm 62. The clamp 63 matching the size and shape of the designated reference part can be replaced so that the clamp 63 can be firmly clamped on the designated reference part. When using the auxiliary fixing component 6 to clamp the designated reference part, the pair of clamping arms 62 are rotated so that the pair of clamping arms 62 gradually come closer to each other. The designated reference part is clamped between a pair of chucks 63, and then a pair of clamping arms 62 are connected by a cross bar 61. In order to facilitate the clamping of designated reference parts of different sizes, a guide column 64 is set on the side of each clamping arm 62 facing the other clamping arm 62, and a guide hole matching the guide column 64 is opened on 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 set 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 moving direction of the chuck 63 can be limited by the guide column 64. When the pair of chucks 63 clamp the designated reference part, the pair of chucks 63 clamp the designated reference part under the action of the compression force of the compression spring 65.

[0036] In one embodiment, in order to monitor whether the stud bolt at the root of a wind turbine blade is screwed into the set depth in the embedded bolt sleeve, the base 1 is adsorbed on the adjacent stud bolt that has been screwed into the embedded bolt sleeve. Here, the stud bolt that has been screwed into the embedded bolt sleeve is used as the designated reference part. The embedded bolt sleeve has a screw hole. The laser transmitter of the laser alarm 4 emits a laser beam to the stud bolt that is about to be screwed into the embedded bolt sleeve, controls the position of the light spot emitted by the laser beam on the stud bolt, receives the reflected laser beam through the receiver, and sets the light spot where the laser beam falls on the stud bolt to be located at a set point on the stud bolt. The distance between the set point and one end of the stud bolt exposed in the embedded bolt sleeve is the same as the set depth. As the screwing depth of the stud bolt in the embedded bolt sleeve gradually changes, the set point on the stud bolt and the position of the light spot where the laser beam falls on the stud bolt change relatively. When the stud bolt is screwed into After the depth is set, the stud bolt cannot block the laser, and the laser beam continues to irradiate forward from the top of the stud bolt to the object behind the stud bolt. Part of the laser beam is reflected back to the receiver from the object behind the stud bolt or no laser beam is reflected back to the receiver due to distance reasons. 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 stud bolt, that is, the reflection intensity and reflectivity of the reflected laser beam do not meet the preset adjustment. At this time, the stud bolt has been screwed into the set depth in the embedded bolt sleeve, and the laser alarm 4 issues an alarm prompt to remind the staff that the stud bolt has been screwed into place and stop screwing the stud bolt, thereby controlling the screw-in accuracy of the stud bolt, and the screw-in accuracy of the stud bolt into the embedded bolt sleeve is controlled. Correspondingly, the exposed length of the stud bolt exposed outside the embedded bolt sleeve is also better controlled.

[0037] The wind turbine blade bolt screw-in monitoring device provided by the present invention, when the bolts connecting the wind turbine blade and the hub are screwed into the corresponding screw holes on the power distribution blades, in order to monitor whether the bolts are screwed into the corresponding set depth of the screw holes, a guide sleeve is connected to the lower horizontal surface of the base, the upper horizontal surface of the base is adsorbed and connected with the designated reference part on the wind turbine blade, the movable end of the slide tube is slidably sleeved in the extension hole of the guide sleeve, and a laser alarm is arranged at the connecting end of the slide rail, the laser alarm emits a laser beam to the bolt screwed into the screw hole, after the laser beam hits the bolt, part of the laser beam returns to the laser alarm according to the law of reflection, the laser alarm receives the reflected laser beam and analyzes and processes it, if the reflection intensity and reflectivity of the reflected laser beam do not meet the preset Condition, the bolt is screwed into the set depth of the corresponding screw hole, at this time the laser alarm issues an alarm prompt, if the reflection intensity and reflectivity of the reflected laser beam meet the preset conditions, the bolt is not screwed into the set depth of the corresponding screw hole, the laser alarm does not issue an alarm prompt, the laser alarm issues an alarm prompt, it is convenient for the staff to know in time that the bolt has been screwed into place and stop tightening the bolt. The screw-in monitoring device can monitor the screw-in depth of the bolt during the bolt installation process, and can more accurately control the screw-in depth of the bolt and the exposed length outside the screw hole, which solves the problem in the prior art that it is difficult to accurately control the set depth of the stud bolt into the embedded bolt sleeve of the wind turbine blade when the stud bolt is screwed into the embedded bolt sleeve.

[0038] The optional implementation modes of the embodiments of the present invention are described in detail above in conjunction with the accompanying drawings. However, the embodiments of the present invention are not limited to the specific details in the above implementation modes. Within the technical concept of the embodiments of the present invention, various simple modifications can be made to the technical scheme of the embodiments of the present invention, and these simple modifications all belong to the protection scope of the embodiments of the present invention.

[0039] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. To avoid unnecessary repetition, the embodiments of the present invention will not further describe various possible combinations.

[0040] In addition, various implementations of the embodiments of the present invention may be arbitrarily combined, and as long as they do not violate the concept of the embodiments of the present invention, they should also be regarded as the contents disclosed in the embodiments of the present invention.

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 hole on the wind turbine blade, characterized in that: Connected to the designated reference parts on the wind turbine blade, including: The 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; The 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 connection end, wherein the movable end is slidably mounted in the extension hole and the connection end is exposed outside the extension hole, and the slide rail (3) is capable of moving along the extension direction of the extension hole; The laser alarm (4) is arranged 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.

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, used for emitting a laser beam to 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 is connected to the photoelectric sensor signal, and is 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 according to 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 also 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 to enhance 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 marks on the 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 a receiving 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 receiving cavity of the laser mounting seat (41), and the alarm display being arranged outside the receiving cavity.

8. The wind turbine blade bolt screw-in monitoring device according to claim 1, characterized in that: Also includes: The auxiliary fixing assembly (6) is connected to the guide sleeve (2) and is detachably connected to a designated reference piece.

9. The wind turbine blade bolt screw-in monitoring device according to claim 8, characterized in that: 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 via 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).

10. The wind turbine blade bolt screw-in monitoring device according to claim 9, characterized in that: The auxiliary fixing assembly (6) further comprises: 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 matching 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 column (64) and the bottom of the guide hole on the corresponding clamp (63), and the compression spring (65) is connected to the corresponding guide column (64) and the clamp (63).

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