Lifting device, detection device and wind generating set

Abstract

The utility model discloses a lifting device, a detection device and a wind generating set. The lifting device is used for driving the detection device to move in the blade. The lifting device comprises a guide assembly, a rod assembly and a driving assembly. The guide assembly comprises a guide part extending in the first direction and can be connected with the blade. The rod assembly is at least partially arranged on the guide assembly, the rod assembly comprises a plurality of detection rods, any two detection rods are detachably connected with each other, each detection rod can be movably connected with the guide part and has a moving freedom degree relative to the guide assembly in the first direction, and the rod assembly is configured to be connected with and carry a detection device to extend into the blade. The driving assembly is in transmission fit with the detection rod and drives the detection rod movably connected with the guide part to move in the first direction. When the lifting device drives the detection device to detect cracks in the blade, the detection effect is good, and operation is convenient.

Description

Technical Field

[0001] This application belongs to the field of blade inspection technology, and in particular relates to a lifting device, an inspection device, and a wind turbine generator set. Background Technology

[0002] During wind turbine operation, the blades are subjected to high-speed centrifugal force, alternating airflow force, and other factors, which may cause cracks to form inside the blades after prolonged operation. Therefore, a lifting device is needed to drive a detection instrument to detect these internal cracks in a timely manner.

[0003] The lifting device in the related technology has a poor structural design, which results in poor detection effect and inconvenience in operation when it drives the detection device to detect cracks inside the blade. Utility Model Content

[0004] This application provides a lifting device, a detection device, and a wind turbine generator set. When the lifting device drives the detection device to detect cracks inside the blades, the detection effect is good and the operation is convenient.

[0005] This application provides a lifting device for moving a detection device within a blade, comprising a guide assembly, a rod assembly, and a drive assembly. The guide assembly includes a guide portion extending along a first direction and capable of connecting to the blade. The rod assembly is at least partially disposed within the guide assembly and includes a plurality of detection rods, any two of which are detachably connected to each other. Each detection rod is movably connected to the guide portion and has a degree of freedom of movement relative to the guide assembly in the first direction. The rod assembly is configured to connect to and carry the detection device into the blade. The drive assembly engages with the detection rods and drives the detection rods movably connected to the guide portion to move along the first direction.

[0006] In some embodiments, one of the two detachably connected detection rods is provided with a groove and a snap-fit ​​element, and the other is provided with a locking element. The two detachably connected detection rods have a connected state and a separated state. In the connected state, the two detection rods are aligned in a first direction, the snap-fit ​​element and the locking element are snapped together and both are located in the groove, and the detection rods have a degree of freedom of movement relative to the guide portion along the first direction. In the separated state, the snap-fit ​​element and the locking element are separated from each other, and the snap-fit ​​element protrudes from the groove and abuts against at least a portion of the guide assembly to restrict the movement of the detection rods relative to the guide portion along the first direction.

[0007] In some embodiments, the snap-fit ​​member includes an elastic body, a snap-fit ​​portion, and a stop portion. The elastic body is connected between the detection rod and the snap-fit ​​portion, and the stop portion is disposed on the snap-fit ​​portion. One of the snap-fit ​​portion and the locking member is provided with a slot, and the other is provided with a locking protrusion that matches the shape of the slot. In the connected state, the elastic body deforms and compresses from the initial state, and both the locking protrusion and the stop portion are located in the groove, with the locking protrusion snapping into the slot. In the separated state, the elastic body returns to the initial state, the locking protrusion disengages from the slot, and the stop portion protrudes from the groove and abuts against at least a portion of the guide component.

[0008] In some embodiments, the end of the locking protrusion away from the detection rod is provided with a first guide surface, and the snap-fit ​​portion is provided with a second guide surface that matches the first guide surface.

[0009] In some embodiments, the card slot is provided with an opening along a second direction, which intersects with the first direction. The locking protrusion is provided with a first connecting surface. In the connected state, the first connecting surface abuts against the wall of the card slot along the first direction.

[0010] In some embodiments, the latching member includes a latching portion, a stop portion, and a driving portion. One of the latching portion and the locking member is provided with a slot, and the other is provided with a locking protrusion that matches the shape of the slot. The stop portion is connected to the driving portion. In the connected state, the locking protrusion is located in the slot, and the stop portion is located in the groove. In the separated state, the locking protrusion disengages from the slot, and the driving portion drives the stop portion to protrude out of the groove and abut against at least a portion of the guide component.

[0011] In some embodiments, the guide component includes a fixed plate and a limiting baffle that is bent and connected to the fixed plate. The limiting baffle and the fixed plate surround a guide groove. The guide portion includes the guide groove, and the drive component is connected to the fixed plate.

[0012] In some embodiments, the drive assembly includes a drive member and an active member. The drive member drives the active member to rotate. The active member engages with a portion of the detection rod in a transmission manner. The active member includes either a nut or a gear.

[0013] In some embodiments, the drive assembly further includes a driven member and a traction member, the driven member and the driving member being spaced apart along a first direction, the traction member being connected to the driving member and the driven member, the driven member being driven in a transmission engagement with the detection rod, and the driven member including a nut and a gear.

[0014] In some embodiments, a spool is provided on the driven member, the spool is connected to the driven member, and rotates synchronously with the driven member.

[0015] In some embodiments, the drive element includes a crank or a motor.

[0016] This application also provides a detection device, including a lifting device and a detection element as described in any of the above embodiments. The detection element is connected to at least one detection rod.

[0017] This application also provides a wind turbine generator set, including blades and the aforementioned detection device. The detection device is disposed on the blade, and a portion of the detection device is disposed within the mold cavity.

[0018] This application has at least the following beneficial effects:

[0019] The lifting device provided in this application is used to move a detection device within a blade. The lifting device includes a guide assembly, a rod assembly, and a drive assembly. The guide assembly, used for connection with the blade, includes a guide portion extending along a first direction. The rod assembly includes multiple detection rods, any two of which are detachably connected to each other. Each detection rod is movably connected to the guide portion and has a degree of freedom of movement relative to the guide assembly in the first direction. In use, the operator engages one detection rod with the drive assembly. Driven by the drive assembly, the detection rod moves and connects to the guide portion. When the length of the detection rod is insufficient, the operator connects another detection rod to the detection rod engaged with the drive assembly, and the drive assembly drives it further into the blade. This extends the lifting device, allowing the detection device to be moved deeper into the blade for detection. The detection effect is not affected by insufficient length, nor is it limited by the internal installation space of the blade due to excessive length. The detection effect is good, and the operation is convenient. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments of this application will be briefly introduced below. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the structure of a lifting device provided in one embodiment of this application;

[0022] Figure 2 This is a schematic diagram of the structure of a detection rod provided in one embodiment of this application;

[0023] Figure 3 This is a schematic diagram of a combination of detection rods provided in one embodiment of this application.

[0024] The annotations in the attached figures are explained as follows:

[0025] 10. Rod assembly; 1. Detection rod; 11. Groove; 12. Snap-fit ​​component; 121. Elastomer; 122. Snap-fit ​​part; 1221. Snap-fit ​​groove; 1222. Second guide surface; 123. Stop part; 13. Locking component; 131. Locking protrusion; 1311. First guide surface; 1312. First connecting surface; 2. Guide assembly; 21. Fixing plate; 22. Guide part; 221. Guide groove; 3. Drive assembly; 31. Drive component; 32. Active component; 33. Driven component; 34. Traction component; 4. Spool;

[0026] X, the first direction; Y, the second direction. Detailed Implementation

[0027] The features and exemplary embodiments of various aspects of this application will be described in detail below. To make the objectives, technical solutions, and advantages of this application clearer, the application will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only intended to explain this application and not to limit it. For those skilled in the art, this application can be implemented without some of these specific details. The following description of the embodiments is merely to provide a better understanding of this application by illustrating examples.

[0028] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising..." does not exclude the presence of additional identical elements in the process, method, article, or apparatus that includes said element.

[0029] To effectively utilize wind energy and achieve maximum power efficiency, the blades and capacity of wind turbine generators are continuously increasing, becoming a development trend. However, with the continuous increase in blade length, the asymmetrical load effects caused by factors such as wind shearing effect, tower shadow effect, and turbulence on wind turbine generators are exacerbated.

[0030] During wind turbine operation, blades are affected by wind shearing effects, tower shadow effects, and turbulence. Combined with the extremely harsh working environment of wind turbine generators, internal cracks may develop on the blades after prolonged operation. Blade cracking can lead to instability in wind turbine generator operation, adversely affecting the safe and stable operation of the wind power generation system. Therefore, timely detection of internal blade cracks is of great significance and importance for the safe operation of wind turbine generators.

[0031] In related technologies, a common method is to suspend the detection device with a rope to insert it into the blade for inspection. Alternatively, a separate metal rod can be used to suspend the detection device. However, with rope-suspended devices, instability can cause the device to vibrate or rotate, affecting the inspection results. With a separate metal rod, a short rod cannot provide comprehensive inspection of the blade's interior; a long rod is difficult to insert due to space constraints.

[0032] Based on this, this application provides a lifting device, a detection device, and a wind turbine generator set. When the lifting device drives the detection device to detect cracks inside the blade, the detection effect is good and the operation is convenient.

[0033] Please see Figure 1 and Figure 2 This application provides a lifting device for moving a detection device within a blade. The lifting assembly includes a guide assembly 2, a rod assembly 10, and a drive assembly 3. The guide assembly 2 includes a guide portion 22 extending along a first direction X, which can be connected to the blade. The rod assembly 10 is at least partially disposed in the guide assembly 2 and includes a plurality of detection rods 1. Any two detection rods 1 are detachably connected to each other. Each detection rod 1 is movably connected to the guide portion 22 and has a degree of freedom of movement relative to the guide assembly 2 in the first direction X. The rod assembly 10 is configured to connect to and carry the detection device into the blade. The drive assembly 3 is in a transmission engagement with the detection rods 1 and drives the detection rods movably connected to the guide portion 22 to move along the first direction X.

[0034] The detection device may include an infrared thermal imager or a camera. Optionally, the detection device includes an infrared thermal imager.

[0035] The connection between the guide assembly 2 and the blade can be either detachable or fixed. Fixed connections can be achieved through welding or bonding. Detachable connections can be secured with bolts or other fasteners, or they can be achieved by one component partially inserting into the other for a snap-fit ​​engagement.

[0036] The rod assembly 10 may include two detection rods 1, three detection rods 1, or more detection rods 1.

[0037] The detection rod 1 may include a strip-shaped rod or a cylindrical rod. Optionally, the detection rod 1 may include a strip-shaped rod. The detachable connection of any two detection rods 1 to each other can be understood as any two detection rods 1 being detachably connected along their own length.

[0038] Any two detection rods 1 can be detachably connected by means of snap-fit, magnetic adsorption, or other methods.

[0039] The material of the detection rod 1 can be pure metal, alloy, or surface-treated metal, including but not limited to stainless steel, copper, aluminum, nickel, titanium, or silver.

[0040] The connection between the rod assembly 10 and the detection device can be detachable or fixed. For example, a mounting base can be provided on the rod assembly 10, and the detection device can be detachably connected to the mounting base of the rod assembly 10.

[0041] In summary, the lifting device provided according to one embodiment of this application includes a guide assembly 2, a rod assembly 10, and a drive assembly 3. The guide assembly 2, which is connected to the blade, includes a guide portion 22 extending along a first direction X. The rod assembly 10 includes a plurality of detection rods 1, any two detection rods 1 being detachably connected to each other. Each detection rod 1 is movably connected to the guide portion 22 and has a degree of freedom of movement relative to the guide assembly 2 in the first direction X. In use, the operator engages one of the detection rods 1 with the drive assembly 3. Under the drive of the drive assembly 3, the detection rod 1 is movably connected to the guide portion 22. When the length of the detection rod 1 is insufficient, the operator connects another detection rod 1 to the detection rod 1 engaged with the drive assembly 3 and drives it to continue deeper into the blade. This extends the lifting device, allowing the detection device to be driven deeper into the blade for detection. The detection effect is not affected by the length being too short, nor is it limited by the internal installation space of the blade due to the length being too long. The detection effect is good and the operation is convenient.

[0042] Please see Figure 2 and Figure 3 In some embodiments, one of the two detachably connected detection rods 1 is provided with a groove 11 and a snap-fit ​​member 12, while the other is provided with a locking member 13. The two detachably connected detection rods 1 have a connected state and a separated state. In the connected state, the two detection rods 1 are aligned in a first direction X, with the snap-fit ​​member 12 and the locking member 13 snapped together and both located within the groove 11. Along the first direction X, the detection rods 1 have a degree of freedom of movement relative to the guide portion 22. In the separated state, the snap-fit ​​member 12 and the locking member 13 are separated from each other. The snap-fit ​​member 12 protrudes from the groove 11 and abuts against at least a portion of the guide assembly 2 to restrict the movement of the detection rods 1 relative to the guide portion 22 along the first direction X.

[0043] The groove 11 may optionally include a square groove or a circular groove. Optionally, the groove 11 includes a square groove.

[0044] One embodiment of this application provides a lifting device that connects and separates two detection rods 1 by providing a groove 11 and a snap-fit ​​member 12 on one rod and a locking member 13 on the other rod. When the snap-fit ​​member 12 and the locking member 13 are snapped together and both are located within the groove 11, the two detection rods 1 are connected. When the snap-fit ​​member 12 and the locking member 13 are separated, the two detection rods 1 are separated. Furthermore, when the snap-fit ​​member 12 and the locking member 13 are separated, the snap-fit ​​member 12 can protrude from the groove 11 and abut against at least a portion of the guide assembly 2, restricting the movement of the detection rod 1 relative to the guide portion 22 along the first direction X, thus preventing the detection rod 1 from falling.

[0045] Please see Figure 2 and Figure 3 In some embodiments, the latching member 12 includes an elastic body 121, a latching portion 122, and a stop portion 123. The elastic body 121 is connected between the detection rod 1 and the latching portion 122. The stop portion 123 is disposed in the latching portion 122. One of the latching portion 122 and the locking member 13 is provided with a slot 1221, and the other is provided with a locking protrusion 131 that matches the shape of the slot 1221. In the connected state, the elastic body 121 is deformed and compressed from its initial state, and both the locking protrusion 131 and the stop portion 123 are located in the groove 11, with the locking protrusion 131 latching into the slot 1221. In the separated state, the elastic body 121 returns to its initial state, the locking protrusion 131 disengages from the slot 1221, and the stop portion 123 protrudes from the groove 11 and abuts against at least a portion of the guide assembly 2.

[0046] The elastomer 121 may include a spring or rubber. Optionally, the elastomer 121 may include a spring.

[0047] One embodiment of this application provides a lifting device that includes an elastic body 121 in a snap-fit ​​component 12. The elastic body 121 is connected between the detection rod 1 and the snap-fit ​​portion 122. A stop portion 123 is disposed in the snap-fit ​​portion 122. A slot 1221 is provided on one of the snap-fit ​​portion 122 and the locking component 13, and a locking protrusion 131 matching the shape of the slot 1221 is provided on the other. When the elastic body 121 deforms and compresses from its initial state, both the locking protrusion 131 and the stop portion 123 are located in the groove 11. The locking protrusion 131 snaps into the slot 1221, thereby achieving a snap-fit ​​connection between the snap-fit ​​component 12 and the locking component 13, both of which are located in the groove 11, thus connecting the two detection rods 1. When the elastic body 121 returns to its initial state, the locking protrusion 131 disengages from the slot 1221, thereby separating the snap-fit ​​component 12 and the locking component 13, thus separating the two detection rods 1.

[0048] In some embodiments, the locking protrusion 131 is provided with a first guide surface 1311 at the end away from the detection rod 1, and the snap-fit ​​portion 122 is provided with a second guide surface 1222 that matches the first guide surface 1311.

[0049] Both the first guide surface 1311 and the second guide surface 1222 include inclined surfaces.

[0050] One embodiment of the lifting device provided in this application provides a first guide surface 1311 at the end of the locking protrusion 131 away from the detection rod 1, and a second guide surface 1222 matching the first guide surface 1311 is provided at the snap-fit ​​part 122. When the locking protrusion 131 is connected to the snap-fit ​​part 12, the first guide surface 1311 and the second guide surface 1222 come into contact, which can play a guiding role and facilitate the snap-fit ​​of the two detection rods 1 after insertion along the first direction X.

[0051] In some embodiments, the card slot 1221 is provided with an opening along the second direction Y, which intersects with the first direction X. The locking protrusion 131 is provided with a first connecting surface 1312. In the connected state, the first connecting surface 1312 abuts against the groove wall of the card slot 1221 along the first direction X.

[0052] The card slot 1221 may include a square slot or a circular slot. Optionally, the card slot 1221 includes a square slot.

[0053] The angle between the first direction X and the second direction Y can be selected from 80° to 100°, or 90°. The first direction X and the second direction Y can be selected to be perpendicular to each other.

[0054] In one embodiment of this application, a lifting device is provided. By setting a slot 1221 with an opening along the second direction Y, when the locking protrusion 131 is connected to the locking member 12, the locking protrusion 131 is partially placed in the slot 1221, and the first connecting surface 1312 abuts against the groove wall of the slot 1221 along the first direction X, thereby realizing the locking member 13 and the locking member 12 in a snap-fit ​​connection.

[0055] It is understood that the snap-fit ​​member 12 adopts the above-described structure, the stop part 123 can be connected to the snap-fit ​​part 122, and the snap-fit ​​part 122 is connected to the elastic body 121. Thus, the driving part includes the elastic body 121. This structure is only an optional embodiment, but is not limited thereto.

[0056] In some embodiments, the latching member 12 may include a latching portion 122, a stop portion 123, and a driving portion. One of the latching portion 122 and the locking member 13 is provided with a latching groove 1221, and the other is provided with a locking protrusion 131 that matches the shape of the latching groove 1221. The stop portion 123 is connected to the driving portion. In the connected state, the locking protrusion 131 is located in the latching groove 1221, and the stop portion 123 is located within the groove 11. In the separated state, the locking protrusion 131 disengages from the latching groove 1221, and the driving portion drives the stop portion 123 to protrude from the groove 11 and abut against at least a portion of the guide assembly 2.

[0057] The drive unit may include a drive motor with a gear, rack and pinion or other transmission mechanism, or a telescopic cylinder drive. The telescopic cylinder drive may be selected from hydraulic cylinder, pneumatic cylinder or electric cylinder.

[0058] One embodiment of this application provides a lifting device in which a stop 123 is connected to a drive unit. The drive unit drives the stop 123 to move, locking the protrusion 131 in the slot 1221, and the drive unit drives the stop 123 to be located in the groove 11. Two detection rods 1 are connected. When the locking protrusion 131 disengages from the slot 1221, the stop 123 is driven to protrude from the groove 11 and abut against at least a portion of the guide assembly 2, thereby preventing the detection rods 1 from falling.

[0059] Please see Figure 1 In some embodiments, the guide component 2 includes a fixed plate 21 and a limiting baffle that is bent and connected to the fixed plate 21. The limiting baffle and the fixed plate 21 surround to form a guide groove 221. The guide part 22 includes the guide groove 221. The drive component 3 is connected to the fixed plate 21.

[0060] Optionally, the fixing plate 21 is a rectangular plate structure. One embodiment of the lifting device provided in this application includes a guide assembly 2 comprising a fixing plate 21 and a limiting baffle bent and connected to the fixing plate 21. The fixing plate 21 is used to connect the driving component 31, and the limiting baffle and the fixing plate 21 form a guide groove 221, which guides the detection rod 1.

[0061] The guide groove 221 can be optionally configured as a U-shaped groove or other structural form that runs through the first direction X and opens on one side of the second direction Y.

[0062] Of course, in other embodiments, the guiding component 2 may include a fixed plate 21 and a guide member disposed on the fixed plate 21. The fixed plate 21 is used to connect the driving component 31, and the guide member is slidably connected to the detection rod 1 along the first direction X, thereby guiding the guide rod. For example, the guide member may include a guide rail.

[0063] In some embodiments, the driving assembly 3 includes a driving member 31 and an active member 32. The driving member 31 drives the active member 32 to rotate. The active member 32 is in transmission cooperation with a portion of the detection rod 1. The active member 32 includes either a nut or a gear. One embodiment of the lifting device provided in this application, by setting a driving member 31 and an active member 32, allows the driving member 31 to drive the active member 32 to rotate. The rotation of the active member 32 causes the detection rod 1, which is in transmission cooperation with the active member 32, to move along a first direction X.

[0064] In some embodiments, the drive assembly 3 further includes a follower 33 and a traction member 34. The follower 33 and the drive member 32 are spaced apart along a first direction X. The traction member 34 is connected to the drive member 32 and the follower 33. The follower 33 is in transmission cooperation with the detection rod 1. The follower 33 includes a nut or a gear.

[0065] It is understandable that when the driving member 32 includes a gear, the driven member 33 also includes a gear. Correspondingly, when the driving member 32 includes a lead screw nut, the driven member 33 also includes a lead screw nut.

[0066] The lifting device provided in one embodiment of this application, by setting a driven member 33 and a traction member 34, with the traction member 34 connected to the driving wheel and the driven wheel, can enable the detection rod 1 to drive and cooperate with the driving wheel and the driven wheel, thereby increasing the stability of the detection rod 1 moving along the first direction X.

[0067] Please see Figure 1 In some embodiments, a spool 4 is provided on the follower 33, the spool 4 is connected to the follower 33, and rotates synchronously with the follower 33.

[0068] One embodiment of this application provides a lifting device in which the cable of the detection device can be wound around the spool 4 by setting a spool 4, so as to avoid the cable getting wrapped around the detection rod 1 during the process of the detection rod 1 driving the detection device to move in the first direction X, which would affect the movement of the detection rod 1 or damage the cable.

[0069] In some embodiments, the drive element 31 includes a crank handle or a motor.

[0070] Optionally, the drive element 31 includes a rocker arm.

[0071] One embodiment of this application provides a lifting device that reduces the overall size and weight of the lifting device by configuring the drive component 31 to include a crank.

[0072] This application provides a detection device, including a lifting device and a detection component as described above. The detection component is connected to at least one detection rod 1. The detection device provided in one embodiment of this application, due to including the aforementioned lifting device, also features good detection performance and convenient operation.

[0073] This application also provides a wind turbine generator set, including blades and the aforementioned detection device. The detection device is disposed on the blade, and a portion of the detection device is disposed within the mold cavity.

[0074] The wind turbine generator set provided in one embodiment of this application has good detection effect and is easy to operate because it includes the above-mentioned detection device.

[0075] The above description is merely a specific implementation of this application. Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working processes of the systems, modules, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here. It should be understood that the protection scope of this application is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this application, and these modifications or substitutions should all be covered within the protection scope of this application.

Claims

1. A lifting device for moving a detection device within a blade, characterized in that, The lifting device includes: The guide assembly (2) includes a guide portion (22) extending along a first direction (X) and capable of being connected to the blade; A rod assembly (10), at least partially disposed in the guide assembly (2), the rod assembly (10) includes a plurality of detection rods (1), any two of the detection rods (1) are detachably connected to each other, each of the detection rods (1) is movably connected to the guide portion (22) and has a degree of freedom of movement relative to the guide assembly (2) in the first direction (X), the rod assembly (10) is configured to connect to and carry the detection device into the blade; The drive assembly (3) is in transmission cooperation with the detection rod (1) and drives the detection rod (1) which is movably connected to the guide part (22) to move along the first direction (X).

2. The lifting device according to claim 1, characterized in that, The two detachably connected detection rods (1) are provided with a groove (11) and a snap-fit ​​(12) on one side and a locking member (13) on the other side. The two detachably connected detection rods (1) have a connected state and a separated state. In the connected state, the two detection rods (1) are connected to each other in the first direction (X), the snap-fit ​​member (12) and the locking member (13) are snap-fitted and both are located in the groove (11), and the detection rod (1) has a degree of freedom of movement relative to the guide part (22) along the first direction (X); In the separated state, the snap-fit ​​member (12) and the locking member (13) are separated from each other, and the snap-fit ​​member (12) protrudes from the groove (11) and abuts against at least a portion of the guide assembly (2) to restrict the movement of the detection rod (1) relative to the guide portion (22) in the first direction (X).

3. The lifting device according to claim 2, characterized in that, The snap-fit ​​member (12) includes an elastic body (121), a snap-fit ​​part (122), and a stop part (123). The elastic body (121) is connected between the detection rod (1) and the snap-fit ​​part (122). The stop part (123) is disposed on the snap-fit ​​part (122). One of the snap-fit ​​part (122) and the locking member (13) is provided with a slot (1221) and the other is provided with a locking protrusion (131) that matches the shape of the slot (1221). In the connected state, the elastic body (121) is deformed and compressed from the initial state, the locking protrusion (131) and the stop (123) are both located in the groove (11), and the locking protrusion (131) is engaged with the slot (1221); In the separated state, the elastomer (121) returns to its initial state, the locking protrusion (131) disengages from the slot (1221), and the stop (123) protrudes from the groove (11) and abuts against at least a portion of the guide assembly (2).

4. The lifting device according to claim 3, characterized in that, The locking protrusion (131) is provided with a first guide surface (1311) at the end away from the detection rod (1), and the snap-fit ​​part (122) is provided with a second guide surface (1222) that matches the first guide surface (1311).

5. The lifting device according to claim 3, characterized in that, The slot (1221) is opened along the second direction (Y), which intersects with the first direction (X). The locking protrusion (131) is provided with a first connecting surface (1312). In the connected state, the first connecting surface (1312) abuts against the groove wall of the slot (1221) along the first direction (X).

6. The lifting device according to claim 2, characterized in that, The latching member (12) includes a latching part (122), a stop part (123) and a driving part. One of the latching part (122) and the locking member (13) is provided with a slot (1221) and the other is provided with a locking protrusion (131) that matches the shape of the slot (1221). The stop part (123) is connected to the driving part. In the connected state, the locking protrusion (131) is located in the slot (1221), and the stop (123) is located in the groove (11); In the separated state, the locking protrusion (131) disengages from the slot (1221), and the driving part drives the stop part (123) to protrude from the groove (11) and abut against at least a portion of the guide assembly (2).

7. The lifting device according to claim 1, characterized in that, The guide component (2) includes a fixed plate (21) and a limiting baffle that is bent and connected to the fixed plate (21). The limiting baffle and the fixed plate (21) surround to form a guide groove (221). The guide part (22) includes the guide groove (221). The drive component (3) is connected to the fixed plate (21).

8. The lifting device according to claim 1, characterized in that, The drive assembly (3) includes a drive member (31) and an active member (32). The drive member (31) drives the active member (32) to rotate. The active member (32) is in transmission cooperation with part of the detection rod (1). The active member (32) includes either a nut or a gear.

9. The lifting device according to claim 8, characterized in that, The drive assembly (3) further includes a driven member (33) and a traction member (34). The driven member (33) and the driving member (32) are spaced apart along a first direction (X). The traction member (34) is connected to the driving member (32) and the driven member (33). The driven member (33) is in transmission cooperation with the detection rod (1). The driven member (33) includes either a nut or a gear.

10. The lifting device according to claim 9, characterized in that, A spool (4) is provided on the driven member (33), the spool (4) is connected to the driven member (33), and rotates synchronously with the driven member (33).

11. The lifting device according to claim 8, characterized in that, The drive unit (31) includes one of a crank and a motor.

12. A detection device, characterized in that, include: The lifting device as described in any one of claims 1 to 11; The detection device is connected to at least one of the detection rods (1).

13. A wind turbine generator set, characterized in that, include: The blade has a cavity; The detection device as claimed in claim 12 is disposed on the blade, and a portion of the detection device is disposed within the cavity.

Images