Protective device for object lifting hole of wind generating set

Abstract

The utility model relates to the technical field of wind turbine generators, in particular to a protection device for a hoisting hole of a wind turbine generator system. The protection device for the object hanging hole of the wind generating set comprises a guardrail structure and two cover plates, one side of each cover plate is used for being rotationally connected with the side wall of the object hanging hole, the cover plates rotate relative to the object hanging hole so as to open or close the object hanging hole, and the guardrail structure is used for being arranged on the peripheral side of the object hanging hole in a surrounding mode; the guardrail structure comprises a first guardrail, a second guardrail, a third guardrail and a guardrail door, and the second guardrail and the guardrail door are located between the first guardrail and the third guardrail and connected with the first guardrail and the third guardrail. Handles are arranged on the cover plates, the handles are rotationally connected with the cover plates, and the handles of the two cover plates are configured to rotate relative to the cover plates when the object hanging holes are opened by the cover plates so as to be connected with the second guardrail and the guardrail door in a hanging mode. According to the protection device for the object lifting hole of the wind generating set, the cover plate can be hung on a guardrail structure, the cover plate is prevented from being closed in the object lifting process, and manpower is saved.

Description

Technical Field

[0001] The present application relates to the technical field of wind turbines, and in particular to a protective device for hanging holes of wind turbines. Background Art

[0002] During daily operation and maintenance of wind turbines, it is necessary to use hoists to lift materials at the lifting holes.

[0003] In the prior art, a cover plate and a safety guardrail are generally provided on the lifting hole. When materials need to be lifted, the cover plate is opened to facilitate the passage of the materials.

[0004] However, the cover is thick and heavy, and the opened cover is difficult to move out from the safety fence. Therefore, during the process of lifting materials, workers are required to hold the cover to prevent it from closing, wasting manpower. Utility Model Content

[0005] The present application provides a protective device for a hanging hole of a wind turbine generator set, which can hang a cover plate on a guardrail structure to prevent the cover plate from closing during the hanging process, thereby saving manpower.

[0006] The protective device for the hanging hole of a wind turbine provided in the present application includes a guardrail structure and two cover plates. One side of the cover plate is used to be rotatably connected to the side wall of the hanging hole. The cover plate rotates relative to the hanging hole to open or close the hanging hole. The guardrail structure is used to surround the hanging hole.

[0007] The guardrail structure comprises a first guardrail, a second guardrail, a third guardrail and a guardrail door. The second guardrail and the guardrail door are located between the first guardrail and the third guardrail and are connected to the first guardrail and the third guardrail.

[0008] A handle is arranged on the cover plate, and the handle is rotatably connected to the cover plate. The handles of the two cover plates are constructed to rotate relative to the cover plate when the cover plate opens the hanging hole, so as to be respectively hung with the second guardrail and the guardrail door.

[0009] In one possible implementation, the protective device for the hanging hole of a wind turbine provided in the present application has a through hole on the cover plate, and the handle includes a first abutment portion, a first connecting portion, and a second abutment portion arranged in sequence, the first connecting portion passes through the through hole and is rotatably connected to the cover plate, the first abutment portion and the second abutment portion are respectively arranged on both sides of the cover plate, and the first abutment portion abuts against the cover plate.

[0010] In a possible implementation, the protective device for the hanging hole of a wind turbine provided in the present application, the guardrail door includes a first support rod, a second support rod and at least two first connecting rods arranged at intervals, the first support rod and the second support rod are arranged opposite to each other, and the first connecting rod connects the first support rod and the second support rod.

[0011] The second guardrail includes at least two second connecting rods arranged at intervals, one end of the second connecting rod is connected to the first guardrail, and the other end of the second connecting rod is connected to the third guardrail.

[0012] The first connection portion and the second abutment portion of one handle are both abutted against the first connection rod, and the first connection portion and the second abutment portion of the other handle are both abutted against the second connection rod.

[0013] In a possible implementation, the protective device for the hanging hole of a wind turbine provided in the present application has at least one second connecting portion on the side of the first support rod facing away from the first connecting rod, and at least one matching portion on the side of the second support rod facing away from the first connecting rod.

[0014] The first support rod is rotatably connected to the first guardrail through the second connection portion, and the second support rod is detachably connected to the third guardrail through the matching portion.

[0015] In one possible implementation, the protective device for the hanging hole of a wind turbine provided in the present application has a connecting hole on the second connecting part, and the first guardrail includes two symmetrically arranged first columns and second columns, the first column is connected to one end of the second connecting rod, and the second column passes through the connecting hole to be rotatably connected to the guardrail door.

[0016] In one possible implementation, the protective device for the hanging hole of a wind turbine provided in the present application has a mating groove on the mating part, and the third guardrail includes two symmetrically arranged third columns and a fourth column. The other end of the second connecting rod is connected to the third column, and the mating groove is engaged or disengaged with the fourth column so that the guardrail door can be detachably connected to the third guardrail.

[0017] In one possible implementation, the protective device for the hanging hole of a wind turbine provided by the present application has the second column and the fourth column in a cylindrical shape, the connecting hole is a circular hole matching the second column, and the matching groove is an arc groove matching the fourth column.

[0018] In a possible implementation, the protective device for the hanging hole of the wind turbine provided in the present application is further provided with at least one supporting column on the first guardrail and the third guardrail, and the extending direction of the supporting column is consistent with the extending direction of the first column.

[0019] In a possible implementation, the protective device for the hanging holes of a wind turbine provided in the present application also includes a plurality of bolts, and a fixing portion is provided at the bottom of the first column, the second column, the third column and the fourth column, and a fixing hole is provided on the fixing portion, and the bolts pass through the fixing holes and are connected to the threaded holes on the peripheral side of the hanging holes.

[0020] In a possible implementation, in the protective device for the hanging hole of a wind turbine provided in the present application, safety hanging points are provided on the tops of the first guardrail and the third guardrail, and the safety hanging points are used to hang safety ropes.

[0021] The protective device for the hanging hole of a wind turbine provided by the present application is provided with a guardrail structure and two cover plates, one side of the cover plate is used to be rotatably connected with the side wall of the hanging hole, and the cover plate rotates relative to the hanging hole to open or close the hanging hole, which is simple to operate and improves work efficiency. The guardrail structure is used to surround the surrounding side of the hanging hole to ensure the safety of the workers during the hanging process. The guardrail structure is formed by providing a first guardrail, a second guardrail, a third guardrail and a guardrail door, the second guardrail and the guardrail door are located between the first guardrail and the third guardrail, and are connected to the first guardrail and the third guardrail. A handle is provided on the cover plate, and the handle is rotatably connected to the cover plate. When the cover plate opens the hanging hole, the handles of the two cover plates rotate relative to the cover plate to respectively hang with the second guardrail and the guardrail door, thereby preventing the cover plate from closing during the hanging process, saving manpower. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0023] Figure 1 A schematic diagram of the structure of a protective device for hanging holes of a wind turbine generator set provided in an embodiment of the present application;

[0024] Figure 2 for Figure 1 Schematic diagram of the structure of the middle cover without the handle;

[0025] Figure 3 for Figure 1 Schematic diagram of the structure of the middle handle;

[0026] Figure 4 for Figure 1 Schematic diagram of the structure of the middle guardrail door;

[0027] Figure 5 for Figure 1 Schematic diagram of the structures of the first guardrail, the second guardrail and the third guardrail.

[0028] Description of reference numerals:

[0029] 100-Guardrail structure;

[0030] 110-first guardrail; 111-first column; 112-second column; 113-support column; 114-fixing part; 115-safety hanging point;

[0031] 120 - second guardrail; 121 - second connecting rod;

[0032] 130-third guardrail; 131-third column; 132-fourth column;

[0033] 140-guardrail door; 141-first support rod; 1411-second connecting portion; 1411a-connecting hole; 142-second support rod; 1421-matching portion; 1421a-matching groove; 143-first connecting rod;

[0034] 200 - cover plate; 210 - handle; 211 - first abutting portion; 212 - first connecting portion; 213 - second abutting portion; 220 - through hole.

[0035] The above drawings have shown clear embodiments of the present application, which will be described in more detail later. These drawings and text descriptions are not intended to limit the scope of the present application in any way, but to illustrate the concept of the present application to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0036] First, those skilled in the art should understand that these implementations are only used to explain the technical principles of the present application and are not intended to limit the scope of protection of the present application. Those skilled in the art can make adjustments to them as needed to adapt to specific application scenarios.

[0037] Secondly, it should be noted that in the description of this application, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, or it can be an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0038] Then, it should be noted that, in the description of the present application, the terms "upper", "lower", "front", "back", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0039] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise specified, "plurality" means two or more.

[0040] As shown in the background technology, in the prior art, a cover plate and a safety guardrail are generally provided on the lifting hole. When materials need to be lifted, the cover plate is opened to facilitate the passage of the materials. However, the cover plate is thick and heavy, and the opened cover plate is difficult to be moved out of the safety guardrail. Therefore, during the lifting of materials, workers need to hold the cover plate to prevent it from closing, which wastes manpower.

[0041] Based on this, the protective device for the hanging hole of a wind turbine provided by the present application is provided with a guardrail structure and two cover plates, one side of the cover plate is used to be rotatably connected with the side wall of the hanging hole, and the cover plate rotates relative to the hanging hole to open or close the hanging hole, which is simple to operate and improves work efficiency. The guardrail structure is used to surround the surrounding side of the hanging hole to ensure the safety of the workers during the hanging process. The guardrail structure is formed by providing a first guardrail, a second guardrail, a third guardrail and a guardrail door, the second guardrail and the guardrail door are located between the first guardrail and the third guardrail, and are connected to the first guardrail and the third guardrail. A handle is provided on the cover plate, and the handle is rotatably connected to the cover plate. When the cover plate opens the hanging hole, the handles of the two cover plates rotate relative to the cover plate to respectively hang with the second guardrail and the guardrail door, thereby preventing the cover plate from closing during the hanging process, saving manpower.

[0042] In order to make the purpose, technical solutions and advantages of the present application clearer, the technical solutions in the embodiments of the present application will be described in more detail below in conjunction with the drawings in the preferred embodiments of the present application. In the drawings, the same or similar reference numerals throughout represent the same or similar parts or parts with the same or similar functions. The described embodiments are part of the embodiments of the present application, not all of the embodiments. The embodiments described below with reference to the drawings are exemplary and are intended to be used to explain the present application, and should not be construed as limitations on the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present application.

[0043] Figure 1 A schematic structural diagram of a protective device for hanging holes of a wind turbine generator set provided in an embodiment of the present application.

[0044] Reference Figure 1As shown, the protective device for the hanging hole of a wind turbine provided in the present application includes a guardrail structure 100 and two cover plates 200. One side of the cover plate 200 is used to be rotatably connected to the side wall of the hanging hole. The cover plate 200 rotates relative to the hanging hole to open or close the hanging hole. The guardrail structure 100 is used to surround the hanging hole.

[0045] The guardrail structure 100 includes a first guardrail 110 , a second guardrail 120 , a third guardrail 130 and a guardrail door 140 . The second guardrail 120 and the guardrail door 140 are located between the first guardrail 110 and the third guardrail 130 , and are connected to the first guardrail 110 and the third guardrail 130 .

[0046] A handle 210 is provided on the cover plate 200, and the handle 210 is rotatably connected to the cover plate 200. The handles 210 of the two cover plates 200 are constructed to rotate relative to the cover plate 200 when the cover plate 200 opens the hanging hole, so as to be respectively hung with the second guardrail 120 and the guardrail door 140.

[0047] Exemplarily, the hanging hole is a rectangular hole, the two cover plates 200 are rectangular cover plates 200 , the two cover plates 200 have the same size, and the two opposite side walls of the hanging hole are rotatably connected to the two cover plates 200 respectively.

[0048] Exemplarily, the cover plate 200 and the side wall of the hanging hole can be connected by a rotating shaft or a hinge. As long as the cover plate 200 can rotate relative to the hanging hole, the present application does not impose too many restrictions on the specific connection method between the cover plate 200 and the hanging hole.

[0049] It can be understood that by providing the first guardrail 110, the second guardrail 120, the third guardrail 130 and the guardrail door 140, a guardrail structure 100 is formed around the side of the hanging hole, thereby ensuring the safety of the workers during the hanging process.

[0050] Specifically, the operator can stand at the first guardrail 110 or the third guardrail 130, and when materials need to be hoisted, apply the cover plate 200 along the Figure 1 The force in the direction indicated by the arrow in the middle is applied to make it rotate in the direction indicated by the arrow to open the hanging hole; when the hanging is completed, a force in the opposite direction indicated by the arrow is applied to the cover plate 200 to make it rotate in the opposite direction indicated by the arrow to close the hanging hole. The operation is convenient and the work efficiency is improved.

[0051] Further, after the hanging hole is opened, Figure 1 As shown by the middle arrow, the handle 210 on the cover plate 200 in the -X direction is rotated to be connected to the second guardrail 120, and then the handle 210 on the cover plate 200 in the +X direction is rotated to be connected to the guardrail door 140, thereby preventing the cover plate 200 from closing during the lifting process and saving manpower.

[0052] Figure 2 for Figure 1 Schematic diagram of the structure of the middle cover without the handle; Figure 3 for Figure 1 Schematic diagram of the structure of the middle handle.

[0053] In some embodiments, reference Figure 2 and Figure 3 As shown, the cover plate 200 has a through hole 220, and the handle 210 includes a first abutting portion 211, a first connecting portion 212 and a second abutting portion 213 which are arranged in sequence. The first connecting portion 212 passes through the through hole 220 and is rotatably connected to the cover plate 200. The first abutting portion 211 and the second abutting portion 213 are respectively arranged on both sides of the cover plate 200, and the first abutting portion 211 abuts against the cover plate 200.

[0054] It can be understood that by providing the through hole 220 on the cover plate 200, a mounting position is provided for the handle 210. The first abutting portion 211 abuts against the cover plate 200, which can prevent the handle 210 from being separated from the cover plate 200, thereby improving the reliability of the handle 210.

[0055] It should be noted that the through hole 220 is a circular hole, and the cross section of the first connecting portion 212 is circular and its diameter is smaller than the diameter of the through hole 220 , so that the first connecting portion 212 drives the first abutting portion 211 and the second abutting portion 213 to rotate relative to the through hole 220 .

[0056] Exemplarily, the cross-section of the first abutting portion 211 may be circular, rectangular or in other shapes, as long as it can abut against the cover plate 200 , and the present application does not impose too many restrictions on this.

[0057] Figure 4 for Figure 1 Schematic diagram of the structure of the middle guardrail door; Figure 5 for Figure 1 Schematic diagram of the structures of the first guardrail, the second guardrail and the third guardrail.

[0058] In some embodiments, reference Figures 3 to 5 As shown, the guardrail door 140 includes a first support rod 141, a second support rod 142 and at least two first connecting rods 143 arranged at intervals. The first support rod 141 and the second support rod 142 are arranged opposite to each other, and the first connecting rod 143 connects the first support rod 141 and the second support rod 142.

[0059] The second guardrail 120 includes at least two second connecting rods 121 disposed at intervals, one end of the second connecting rod 121 is connected to the first guardrail 110 , and the other end of the second connecting rod 121 is connected to the third guardrail 130 .

[0060] The first connection portion 212 and the second abutting portion 213 of one handle 210 both abut against the first connection rod 143 , and the first connection portion 212 and the second abutting portion 213 of the other handle 210 both abut against the second connection rod 121 .

[0061] Exemplarily, there may be two or more first connecting rods 143 , and the present application does not impose too many restrictions on the number of first connecting rods 143 .

[0062] Exemplarily, there may be two or more second connecting rods 121 , and the present application does not impose too many restrictions on the number of second connecting rods 121 .

[0063] Specifically, by providing the first connecting rod 143 and the second connecting rod 121, on the one hand, they play a role of connection and protection, and on the other hand, they provide a hanging position for the cover plate 200. One cover plate 200 is hung with the guardrail door 140 by abutting the first connecting portion 212 and the second abutting portion 213 of its handle 210 with the first connecting rod 143. Another cover plate 200 is hung with the second guardrail 120 by abutting the first connecting portion 212 and the second abutting portion 213 of its handle 210 with the second connecting portion 1411.

[0064] In some embodiments, reference Figure 4 and Figure 5 As shown, the first support rod 141 has at least one second connection portion 1411 on a side facing away from the first connection rod 143 , and the second support rod 142 has at least one matching portion 1421 on a side facing away from the first connection rod 143 .

[0065] The first support rod 141 is rotatably connected to the first guardrail 110 via the second connection portion 1411 , and the second support rod 142 is detachably connected to the third guardrail 130 via the matching portion 1421 .

[0066] Exemplarily, there may be one or more second connection parts 1411 , and the present application does not impose too many restrictions on the number of second connection parts 1411 .

[0067] Exemplarily, there may be one or more matching parts 1421 , and the present application does not impose excessive restrictions on the number of matching parts 1421 .

[0068] Specifically, the first support rod 141 is rotatably connected to the first guardrail 110 by providing the second connection portion 1411, so that the first support rod 141 can rotate relative to the first guardrail 110, that is, the guardrail door 140 can rotate relative to the first guardrail 110. Further, the second support rod 142 is detachably connected to the third guardrail 130 by providing the matching portion 1421, so that the guardrail door 140 can be opened or closed, and it is convenient to extract materials after opening the guardrail door 140.

[0069] In some embodiments, reference Figure 4 and Figure 5 As shown, the second connecting portion 1411 has a connecting hole 1411a, and the first guardrail 110 includes two symmetrically arranged first columns 111 and second columns 112. The first column 111 is connected to one end of the second connecting rod 121, and the second column 112 passes through the connecting hole 1411a to be rotatably connected to the guardrail door 140.

[0070] It can be understood that by providing the first column 111 and the second column 112 , support is provided for the first guardrail 110 .

[0071] Furthermore, by providing a connecting hole 1411 a on the second connecting portion 1411 , a connecting position is provided for the guardrail door 140 and the second column 112 .

[0072] In some embodiments, reference Figure 4 and Figure 5 As shown, a mating groove 1421a is provided on the mating portion 1421, and the third guardrail 130 includes two symmetrically arranged third columns 131 and a fourth column 132, and the other end of the second connecting rod 121 is connected to the third column 131, and the mating groove 1421a is engaged or disengaged with the fourth column 132, so that the guardrail door 140 can be detachably connected to the third guardrail 130.

[0073] It can be understood that by providing the third column 131 and the fourth column 132 , support is provided for the third guardrail 130 .

[0074] Furthermore, by providing a matching groove 1421a on the matching portion 1421, the matching groove 1421a is engaged with the fourth column 132, so that the guardrail door 140 is connected to the third guardrail 130, thereby closing the guardrail door 140. The matching groove 1421a is disengaged from the fourth column 132, so that the guardrail door 140 is away from the third guardrail 130, thereby opening the guardrail door 140. The operation is simple, and the work efficiency is further improved.

[0075] In some embodiments, reference Figure 4 and Figure 5 As shown, the second column 112 and the fourth column 132 are cylindrical, the connecting hole 1411 a is a circular hole matching the second column 112 , and the matching groove 1421 a is an arc groove matching the fourth column 132 .

[0076] It can be understood that the circular connecting hole 1411a can rotate relative to the side of the cylindrical second column 112, and the arc-shaped matching portion 1421 can be engaged with or disengaged from the side of the cylindrical fourth column 132.

[0077] In some embodiments, reference Figure 5 As shown, at least one support column 113 is further provided on the first guardrail 110 and the third guardrail 130 , and the extension direction of the support column 113 is consistent with the extension direction of the first column 111 .

[0078] It should be noted that by providing support columns 113 on the first guardrail 110 and the third guardrail 130 , the strength of the first guardrail 110 and the third guardrail 130 can be improved, and the reliability of the guardrail structure 100 can be improved.

[0079] Exemplarily, one or more support columns 113 may be respectively provided on the first guardrail 110 and the third guardrail 130 , and the present application does not impose excessive restrictions on the number of support columns 113 .

[0080] Exemplarily, the material of the support column 113 can be steel or other high-strength metal, as long as it can improve the supporting strength of the first guardrail 110 and the third guardrail 130, and the present application does not impose too many restrictions on this.

[0081] In some embodiments, reference Figure 5 As shown, it also includes multiple bolts. The bottoms of the first column 111, the second column 112, the third column 131 and the fourth column 132 are provided with fixing parts 114, and the fixing parts 114 have fixing holes. The bolts pass through the fixing holes and are connected with the threaded holes on the peripheral sides of the hanging holes.

[0082] It can be understood that by setting a fixing portion 114 at the bottom of the first column 111, the second column 112, the third column 131 and the fourth column 132, a fixed position is provided for the guardrail structure 100, and the guardrail structure 100 is connected to the threaded holes on the peripheral side of the hanging hole, thereby improving the stability of the guardrail structure 100.

[0083] In some embodiments, reference Figure 5 As shown, the tops of the first guardrail 110 and the third guardrail 130 are both provided with safety hanging points 115, and the safety hanging points 115 are used to hang safety ropes.

[0084] Specifically, by setting a safety hanging point 115 at the top of the first guardrail 110 and the third guardrail 130, a hanging position is provided for the operator's safety rope. When lifting materials, the operator can hang the safety rope on the safety hanging point 115, further improving the safety of the operation process.

[0085] It can be understood by those skilled in the art that the protective device for the hanging hole of the wind turbine generator set provided in the present application is simple to operate and improves work efficiency by providing a guardrail structure 100 and two cover plates 200, one side of the cover plate 200 is used to be rotatably connected to the side wall of the hanging hole, and the cover plate 200 rotates relative to the hanging hole to open or close the hanging hole. The guardrail structure 100 is used to surround the surrounding side of the hanging hole to ensure the safety of the workers during the hanging process. The guardrail structure 100 is formed by providing a first guardrail 110, a second guardrail 120, a third guardrail 130 and a guardrail door 140, and the second guardrail 120 and the guardrail door 140 are located between the first guardrail 110 and the third guardrail 130, and are connected to the first guardrail 110 and the third guardrail 130. A handle 210 is provided on the cover plate 200, and the handle 210 is rotatably connected to the cover plate 200. When the cover plate 200 opens the hanging hole, the handles 210 of the two cover plates 200 rotate relative to the cover plate 200 respectively to be hooked with the second guardrail 120 and the guardrail door 140 respectively, thereby preventing the cover plate 200 from closing during the hanging process and saving manpower.

[0086] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0087] It should be understood that the various numerical numbers involved in the embodiments of the present application are only used for the convenience of description and are not used to limit the scope of the embodiments of the present application.

[0088] So far, the technical solutions of the present application have been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present application is obviously not limited to these specific embodiments. Without departing from the principles of the present application, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present application.

Claims

1. A protective device for a hanging hole of a wind turbine generator set, characterized in that: It comprises a guardrail structure and two cover plates, one side of the cover plate is used to be rotatably connected to the side wall of the hanging hole, the cover plate rotates relative to the hanging hole to open or close the hanging hole, and the guardrail structure is used to surround the hanging hole; The guardrail structure includes a first guardrail, a second guardrail, a third guardrail and a guardrail door, wherein the second guardrail and the guardrail door are located between the first guardrail and the third guardrail, and are connected to the first guardrail and the third guardrail; The cover plate is provided with a handle, and the handle is rotatably connected to the cover plate. The handles of the two cover plates are constructed to rotate relative to the cover plate when the cover plate opens the hanging hole, so as to be respectively hung with the second guardrail and the guardrail door.

2. The protective device for hanging holes of a wind turbine generator set according to claim 1, characterized in that: The cover plate has a through hole, and the handle includes a first abutment portion, a first connection portion, and a second abutment portion which are sequentially arranged, the first connection portion passes through the through hole and is rotatably connected to the cover plate, the first abutment portion and the second abutment portion are respectively arranged on both sides of the cover plate, and the first abutment portion abuts against the cover plate.

3. The protective device for hanging holes of a wind turbine generator set according to claim 2, characterized in that: The guardrail door comprises a first support rod, a second support rod and at least two first connecting rods arranged at intervals, the first support rod and the second support rod are arranged opposite to each other, and the first connecting rod connects the first support rod and the second support rod; The second guardrail includes at least two second connecting rods arranged at intervals, one end of the second connecting rod is connected to the first guardrail, and the other end of the second connecting rod is connected to the third guardrail; The first connection portion and the second abutment portion of one handle both abut against the first connection rod, and the first connection portion and the second abutment portion of the other handle both abut against the second connection rod.

4. The protective device for hanging holes of a wind turbine generator set according to claim 3 is characterized in that: The first support rod has at least one second connection portion on a side facing away from the first connection rod, and the second support rod has at least one matching portion on a side facing away from the first connection rod; The first support rod is rotatably connected to the first guardrail through the second connection portion, and the second support rod is detachably connected to the third guardrail through the matching portion.

5. The protective device for hanging holes of a wind turbine generator set according to claim 4, characterized in that: The second connecting portion has a connecting hole, the first guardrail includes two symmetrically arranged first columns and second columns, the first column is connected to one end of the second connecting rod, and the second column passes through the connecting hole to be rotatably connected to the guardrail door.

6. The protective device for hanging holes of a wind turbine generator set according to claim 5, characterized in that: The mating portion is provided with a mating groove, the third guardrail comprises two symmetrically arranged third columns and a fourth column, the other end of the second connecting rod is connected to the third column, and the mating groove is engaged or disengaged with the fourth column so that the guardrail door can be detachably connected to the third guardrail.

7. The protective device for hanging holes of a wind turbine generator set according to claim 6, characterized in that: The second column and the fourth column are cylindrical, the connecting hole is a circular hole matching the second column, and the matching groove is an arc groove matching the fourth column.

8. The protective device for hanging holes of a wind turbine generator set according to claim 5, characterized in that: At least one supporting column is also provided on the first guardrail and the third guardrail, and the extending direction of the supporting column is consistent with the extending direction of the first column.

9. The protective device for hanging holes of a wind turbine generator set according to claim 6, characterized in that: It also includes multiple bolts. The bottoms of the first column, the second column, the third column and the fourth column are provided with fixing parts, and the fixing parts have fixing holes. The bolts pass through the fixing holes and are connected with the threaded holes on the peripheral sides of the hanging holes.

10. The protective device for hanging holes of a wind turbine generator set according to any one of claims 1 to 9, characterized in that: Safety hanging points are arranged on the tops of the first guardrail and the third guardrail, and the safety hanging points are used to hang safety ropes.

Images