Maintenance platform for wind tower converter cabinet and use method

Abstract

The invention relates to the technical field of electronic power maintenance, in particular to a maintenance platform for a wind tower converter cabinet and a use method. A maintenance platform for a wind tower converter cabinet comprises a base; the supporting plate group comprises at least two supporting plates; a fixing plate; the fixing assembly comprises a fixing rod and a fastener; in the non-working state, the base, the supporting plate set and the fixing plate are sequentially stacked in the height direction, and the fixing rod sequentially penetrates through the base, the supporting plate set and the fixing plate and then is connected with the fastener. In the working state, the fixing rod is separated from the supporting plate set, and the supporting plate set is suitable for being unfolded at the top of the converter cabinet in the length direction of the converter cabinet. The invention provides a maintenance platform for a wind tower converter cabinet and a use method, and aims to solve the problems that the space in a fan tower drum is very narrow, the converter cabinet breaks down, workers carry out operation maintenance at the top of the converter cabinet, a maintenance device is integrally arranged, and the workers are inconvenient to go in and out and use when using the maintenance device.

Description

Technical Field

[0001] This invention relates to the field of electronic power maintenance technology, specifically to a maintenance platform for wind tower converter cabinets and its usage method. Background Technology

[0002] A converter is a core device that transforms one form of energy, signal, or matter into another. It is widely used in electronics, power, industrial production, and daily life, and its core principles revolve around "energy conservation," "signal modulation," or "matter state conversion." Converter cabinets are used to integrate, install, and protect converters.

[0003] Inside the wind turbine tower, the converter cabinet is subjected to the static load of heavy equipment such as converters and the vibration load generated by the operation of the wind turbine for a long time. It is prone to structural fatigue, weld cracking and bolt loosening. In addition, the wind turbine tower is often located in a harsh environment (such as high humidity and high salt spray at sea, and high temperature and high dust on land), which affects the converter cabinet and causes problems frequently.

[0004] As is well known, the space inside a wind turbine tower is very small. When a converter cabinet malfunctions and needs to be repaired, the operator has to perform the repair work on top of the converter cabinet. Existing maintenance devices for converter cabinets are often integrated, which makes it inconvenient for operators to enter, exit, and use the maintenance devices in a confined space. Summary of the Invention

[0005] This invention provides a maintenance platform and method for wind turbine converter cabinets, which solves the problem that the space inside the wind turbine tower is very small. When the converter cabinet malfunctions and needs to be repaired, the operators have to carry out the work and maintenance on the top of the converter cabinet. Existing maintenance devices for converter cabinets are often integrated, which makes it inconvenient for operators to enter and exit and use the maintenance device in a confined space.

[0006] In a first aspect, the present invention provides a maintenance platform for a wind tower converter cabinet, having a working state and a non-working state, including: Base; A support plate assembly, the support plate assembly comprising at least two support plates, wherein the length of the base is greater than or equal to the length of the support plate assembly; A fixed plate, wherein the length of the support plate assembly is greater than or equal to the length of the fixed plate; A fixing component, the fixing component including a fixing rod and fasteners; In the non-working state, the base, the support plate assembly, and the fixing plate are stacked sequentially along the height direction, the fixing rod is separated from the support plate assembly, and the fixing rod passes through the base, the support plate assembly, and the fixing plate in sequence before being connected to the fastener; in the working state, the support plate assembly is adapted to unfold along its length direction at the top of the converter cabinet.

[0007] Beneficial effects: Before maintenance, it is in a non-working state, making it easy for operators to enter the narrow space of the wind turbine tower. Compared with an integrated device, it is more convenient to enter and exit. During maintenance, it is in a working state, and the support plate assembly unfolds along the top of the converter cabinet. During use, it can be flexibly unfolded according to the length of the converter cabinet to meet the needs of converter cabinets of different lengths and improve the convenience of use.

[0008] In one optional embodiment, the support plate assembly includes a first support plate and a second support plate, wherein the lengths of the first support plate and the second support plate are not equal, and the widths of the first support plate and the second support plate are equal.

[0009] Beneficial effects: The length direction of the first support plate refers to... Figure 1 In the X direction, the width direction of the first support plate refers to... Figure 1 In the Y direction, the lengths of the first support plate and the second support plate are not equal so that they can be combined into maintenance platforms of different lengths in the working state. The widths of the first support plate and the second support plate are equal to ensure that the width of the maintenance platform composed of the support plate group is consistent.

[0010] In one optional embodiment, the support plate group further includes a third support plate, a fourth support plate, and a fifth support plate, wherein the lengths of the third support plate and the fourth support plate are not equal, the lengths of the fourth support plate and the fifth support plate are not equal, the length of the third support plate and the first support plate are not equal, and the widths of the third support plate, the fourth support plate, and the fifth support plate are equal, and the width of the third support plate and the first support plate are equal.

[0011] Beneficial effects: The lengths of the third and fourth support plates are unequal, the lengths of the fourth and fifth support plates are unequal, and the lengths of the third and first support plates are unequal. By setting different support plate lengths, when facing converter cabinets of different lengths, the support plate assembly can be positioned along its length in the working state. Figure 2 The support plates extend to different lengths in the X direction (as shown in the image), making them more compatible with the converter cabinet. The widths of the third, fourth, and fifth support plates are equal, and the width of the third support plate is equal to the width of the first support plate, ensuring that the support plate assembly extends along the width direction (as shown in the image) during operation. Figure 2The lengths of the first, second, third, fourth, and fifth support plates are all the same (in the Y direction). It should be noted that in this embodiment, the lengths of the first, second, third, fourth, and fifth support plates are not equal.

[0012] In one optional embodiment, there are at least two first support plates and two second support plates. The thicknesses of the first support plate, the second support plate, the third support plate, and the fourth support plate are the same, so that the first support plate, the second support plate, the third support plate, and the fourth support plate are set at the same height in the working state, and the height of the fifth support plate is higher than that of the first support plate.

[0013] Beneficial effects: Since the thicknesses of the first, second, third, and fourth support plates are the same, the thickness of the maintenance platform formed after the support plate assembly is deployed is ( Figure 2 The Z-direction is the same, which facilitates the movement of workers between different support plates and avoids collisions due to differences in thickness. The fifth support plate is higher than the first support plate to accommodate the protrusion at the top of the converter cabinet.

[0014] In one optional embodiment, a support rod is also included. The fixed plate has a U-shaped cross-section and a rib portion is provided in the accommodating space of the fixed plate. The rib portion is connected to one end of the support rod in the non-working state. The rib portion is divided into a first rib portion, a second rib portion, and a third rib portion. The first rib portion and the second rib portion are parallel and spaced apart. The third rib portion is located between the first rib portion and the second rib portion and is provided with a lifting hole.

[0015] Beneficial effects: The rib portion consists of a first rib portion, a second rib portion, and a third rib portion. The first and second rib portions are parallel and spaced apart. The third rib portion is located between the first and second rib portions. The first and second rib portions are along... Figure 1 The X-direction setting in the middle, the third rib portion along Figure 1 The Y-direction setting in the middle, the first rib and the second rib serve to enhance the strength of the "U"-shaped space of the fixing plate, and the third rib serves to connect the first rib and the second rib, so that the first rib, the second rib and the third rib form a whole, thereby strengthening the overall strength of the fixing plate.

[0016] In one optional embodiment, in the working state, one end of the support rod is connected to the fifth support plate, and the other end of the support rod is connected to the second support plate or the fourth support plate.

[0017] Beneficial effects: along Figure 2 In the X direction, one side of the fifth support plate is connected to the second support plate via a support rod, and the other side is connected to the fourth support plate via a support rod. Figure 2 The second support plate is located to the left of the fourth support plate to meet the size requirements of the converter cabinet.

[0018] In one optional embodiment, the first support plate is provided with a first insertion hole, the second support plate is provided with a second insertion hole, the third support plate is provided with a third insertion hole, the fourth support plate is provided with a fourth insertion hole, and the fifth support plate is provided with a fifth insertion hole. In the non-working state, the projections of the first insertion hole, the second insertion hole, the third insertion hole, the fourth insertion hole, and the fifth insertion hole on the horizontal plane coincide.

[0019] Beneficial effects: The base is provided with a sixth insertion hole, and the fixing plate is provided with a seventh insertion hole. The projections of the first, sixth, and seventh insertion holes on the horizontal plane coincide, so that the fixing rod passes through the seventh, fourth, first, second, fifth, third, and sixth insertion holes from top to bottom. The fixing rod is provided with external threads at both ends, and the base, support plate assembly, and fixing plate are fixed in the non-working state with the help of nuts.

[0020] In one optional embodiment, the first support plate includes a plate body, a first side plate, a second side plate, and a third side plate. The first side plate, the second side plate, and the third side plate extend from the same side of the plate body. The first side plate and the second side plate are arranged perpendicularly, and the first side plate and the third side plate are arranged parallel to each other. The first side plate and the third side plate are respectively provided with clearance grooves.

[0021] Beneficial effects: The base is provided with a sixth insertion hole, and the fixing plate is provided with a seventh insertion hole. The projections of the first, sixth, and seventh insertion holes on the horizontal plane coincide, so that the fixing rod passes through the seventh, fourth, first, second, fifth, third, and sixth insertion holes from top to bottom. The fixing rod is provided with external threads at both ends, and the base, support plate assembly, and fixing plate are fixed in the non-working state with the help of nuts.

[0022] In one optional embodiment, the plate body is provided with a protective hole, the inner peripheral wall of the protective hole is provided with a protective ring, and the end faces of the first side plate, the second side plate and the third side plate are respectively provided with buffer pads.

[0023] Beneficial effects: The panel has three protective holes, each with a protective ring on its inner wall. When workers reach into the protective hole with tools or their hands to grasp the support plate, the protective ring provides protection, preventing injury to hands or tools from the panel. The first, second, and third side panels have buffer pads on their ends facing the top of the converter cabinet. These buffer pads cushion the impact, preventing rigid collisions between the support plate and the converter cabinet and thus avoiding damage to the top of the converter cabinet.

[0024] Secondly, the present invention also provides a method for using a maintenance platform for a wind tower converter cabinet. In the non-working state, the base, support plate assembly, and fixing plate are stacked sequentially along the height direction. The fixing rod passes through the base, support plate assembly, and fixing plate sequentially. The two ends of the fixing rod are respectively rotatably connected to fasteners, which make the base, support plate assembly, and fixing plate stacked and fixed. In the working state, the support plate assembly is adapted to unfold along its length direction on the top of the converter cabinet for personnel use. Attached Figure Description

[0025] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0026] Figure 1 This is a schematic diagram of the maintenance platform for the wind tower converter cabinet in a non-working state according to an embodiment of the present invention; Figure 2 This is a schematic diagram of the maintenance platform for the wind tower converter cabinet in operation according to an embodiment of the present invention; Figure 3 This is a top view of the maintenance platform for the wind tower converter cabinet in the working state according to an embodiment of the present invention; Figure 4 This is a schematic diagram showing the connection between the fixing plate, fixing rod, and support rod according to an embodiment of the present invention; Figure 5 This is a schematic diagram of the first support plate according to an embodiment of the present invention; Figure 6 This is a schematic diagram of the first support plate from another angle according to an embodiment of the present invention; Figure 7 This is a schematic diagram of the base according to an embodiment of the present invention; Figure 8 This is a schematic diagram of the converter cabinet maintenance platform in operation when it is located inside the wind turbine tower, according to an embodiment of the present invention.

[0027] Explanation of reference numerals in the attached drawings: 1. Base; 101. Sixth insertion hole; 2. Support plate assembly; 201. First support plate; 2011. Plate body; 2012. First side plate; 2013. Second side plate; 2014. Third side plate; 2015. First insertion hole; 2016. Protective hole; 2017. Protective ring; 2018. Buffer pad; 2019. Clearance groove; 202. Second support plate; 203. Third support plate; 204. Fourth support plate; 205. Fifth support plate; 3. Fixing plate; 301. First rib plate; 302. Second rib plate; 303. Third rib plate; 304. Lifting hole; 4. Support rod; 5. Fixing rod; 6. Fastener; 7. Converter cabinet. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0029] The following is combined Figures 1 to 8 The following describes embodiments of the present invention.

[0030] According to an embodiment of the present invention, a maintenance device for a converter cabinet 7 for a wind turbine tower is provided, having a working state and a non-working state, comprising: a base 1; a support plate assembly 2, the support plate assembly 2 including at least two support plates, the length of the base 1 being greater than the length of the support plate assembly 2; a fixing plate 3, the length of the support plate assembly 2 being greater than the length of the fixing plate 3; and a fixing assembly including a fixing rod 5 and a fastener 6; in the non-working state, the base 1, the support plate assembly 2, and the fixing plate 3 are stacked sequentially along the height direction, the fixing rod 5 is separated from the support plate assembly 2, and the fixing rod 5 passes sequentially through the base 1, the support plate assembly 2, and the fixing plate 3 and is connected to the fastener 6; in the working state, the support plate assembly 2 is adapted to unfold along its length direction at the top of the converter cabinet 7.

[0031] Before maintenance, it is in a non-working state, achieving a complete connection, making it easy for operators to enter the confined space of the wind turbine tower. Compared to an integrated device, entry and exit are more convenient. During maintenance, it is in a working state, with the support plate assembly 2 unfolding along the top of the converter cabinet 7. It can flexibly unfold according to the length of the converter cabinet 7 during use, accommodating converter cabinets of different lengths and improving ease of use. It should be noted that the fixing rod 5 in this embodiment has external threads at both ends, and the fastener 6 is a nut with internal threads, which is compatible with the fixing rod 5. It should also be noted that the width of the base 1, the width of the support plate assembly 2, and the width of the fixing plate 3 are the same. Figure 1 center Y direction).

[0032] In one embodiment, such as Figure 1 , Figure 2 and Figure 3 As shown, the support plate assembly 2 includes a first support plate 201 and a second support plate 202. The lengths of the first support plate 201 and the second support plate 202 are unequal, while the widths of the first support plate 201 and the second support plate 202 are equal. In this embodiment, the length direction of the first support plate 201 refers to... Figure 1 In the X direction, the width direction of the first support plate 201 refers to... Figure 1 In the Y direction, the lengths of the first support plate 201 and the second support plate 202 are not equal so that they can be combined into maintenance platforms of different lengths in the working state. The widths of the first support plate 201 and the second support plate 202 are equal to ensure that the width of the maintenance platform composed of the support plate group 2 remains consistent.

[0033] In one embodiment, such as Figure 1 , Figure 2 and Figure 3 As shown, the support plate assembly 2 also includes a third support plate 203, a fourth support plate 204, and a fifth support plate 205. The lengths of the third support plate 203 and the fourth support plate 204 are unequal, the lengths of the fourth support plate 204 and the fifth support plate 205 are unequal, the length of the third support plate 203 is unequal to the length of the first support plate 201, the widths of the third support plate 203, the fourth support plate 204, and the fifth support plate 205 are equal, and the width of the third support plate 203 is equal to the width of the first support plate 201. Figure 1 , Figure 2 and Figure 3 As shown, the lengths of the third support plate 203 and the fourth support plate 204 are unequal, the length of the fourth support plate 204 is unequal to the length of the fifth support plate 205, and the length of the third support plate 203 is unequal to the length of the first support plate 201. By setting different support plate lengths, when facing converter cabinets 7 of different lengths, the support plate group 2 is positioned along its length in the working state. Figure 2 The support plate assembly 2 extends to different lengths in the X direction (as shown in the image), making it more compatible with the converter cabinet 7. The widths of the third support plate 203, the fourth support plate 204, and the fifth support plate 205 are equal, and the width of the third support plate 203 is equal to the width of the first support plate 201, so that the support plate assembly 2 can extend along the width direction (as shown in the image) in the working state. Figure 2 The lengths of the first support plate 201, the second support plate 202, the third support plate 203, the fourth support plate 204, and the fifth support plate 205 in this embodiment are all different.

[0034] In this embodiment, as Figure 1 As shown, along Figure 1 In the Z-direction, from bottom to top, are stacked base 1, third support plate 203, fifth support plate 205, second support plate 202, first support plate 201, fourth support plate 204, and fixing plate 3, and the length direction of the support plates ( Figure 1 The length of the structure in the X direction decreases sequentially while the width remains constant, achieving a positive pyramid shape and ensuring the stability of the connection when not in operation.

[0035] In one embodiment, such as Figure 1 , Figure 2 and Figure 3 As shown, there are at least two first support plates 201 and second support plates 202. The thicknesses of the first support plate 201, second support plate 202, third support plate 203, and fourth support plate 204 are the same, so that the first support plate 201, second support plate 202, third support plate 203, and fourth support plate 204 are set at the same height in the working state. The height of the fifth support plate 205 is higher than that of the first support plate 201. Figure 2 As shown, since the thicknesses of the first support plate 201, the second support plate 202, the third support plate 203, and the fourth support plate 204 are the same, the thickness of the maintenance platform formed by the support plate group 2 after unfolding is ( Figure 2 The Z-direction is the same, which facilitates the movement of workers between different support plates and avoids collisions due to differences in thickness. The fifth support plate 205 is higher than the first support plate 201 to accommodate the protrusion on the top of the converter cabinet 7.

[0036] In this embodiment, as Figure 1 , Figure 2 As shown, there are three first support plates 201 and two second support plates 202. In the non-working state, along... Figure 1In the Z-direction, from bottom to top, there are a third support plate 203, a fifth support plate 205, two second support plates 202, three first support plates 201, and a fourth support plate 204 stacked together; in the working state, along... Figure 2 In the X direction, from left to right, a first support block, a third support plate 203, a first support plate 201, a second support plate 202, a fifth support plate 205, and a fourth support plate 204 are laid out sequentially. The height of the fifth support plate 205 is higher than that of the second support plate 202.

[0037] In one embodiment, such as Figure 1 , Figure 4 As shown, it also includes a support rod 4. The fixing plate 3 has a U-shaped cross-section, and a rib portion is provided within the accommodating space of the fixing plate 3. The rib portion is connected to one end of the support rod 4 in the non-working state. In this embodiment, as... Figure 1 , Figure 4 As shown, there are four support rods 4. The rib portion consists of a first rib portion 301, a second rib portion 302, and a third rib portion 303. The first rib portion 301 and the second rib portion 302 are parallel and spaced apart. The third rib portion 303 is located between the spaces between the first rib portion 301 and the second rib portion 302. The first rib portion 301 and the second rib portion 302 are arranged along... Figure 1 The X-direction setting in the middle, the third rib portion 303 along Figure 1 The Y-direction arrangement of the fixing plate 3 includes a first rib portion 301 and a second rib portion 302, which enhance the strength of the "U"-shaped space. A third rib portion 303 connects the first rib portion 301 and the second rib portion 302, forming a unified structure and thus strengthening the overall strength of the fixing plate 3. In this embodiment, as... Figure 1 , Figure 4 As shown, the third rib plate 303 is provided with a lifting hole 304, which facilitates the overall lifting of the entire device by ropes when it is not in operation. It should be noted that the "U"-shaped opening of the fixing plate 3 is set upward, which facilitates relocation and lifting, and increases the contact area between the fixing plate 3 and the first support plate 201.

[0038] In this embodiment, as Figure 1 , Figure 4As shown, the first rib portion 301 and the second rib portion 302 are respectively fixed with two support rods 4. That is, the first rib portion 301 has two spaced-apart through holes, and one end of a support rod 4 passes through one through hole and is connected to a fastener 6; the second rib portion 302 has two spaced-apart through holes, and one end of a support rod 4 passes through one through hole and is connected to a fastener 6. It should be noted that the fastener 6 in this embodiment is a nut, and the fastener 6 is threadedly connected to the support rod 4. The outer diameter of the nut is larger than the inner diameter of the through hole.

[0039] In one embodiment, such as Figure 1 , Figure 2 As shown, in the working state, one end of the support rod 4 is connected to the fifth support plate 205, and the other end of the support rod 4 is connected to the second support plate 202 or the fourth support plate 204. In this embodiment, as... Figure 2 As shown, along Figure 2 In the X direction, one side of the fifth support plate 205 is connected to the second support plate 202 via support rod 4, and the other side is connected to the fourth support plate 204 via support rod 4, that is, Figure 2 The second support plate 202 is located to the left of the fourth support plate 204 to meet the size requirements of the converter cabinet 7. It should be noted that the two ends of the support rod 4 in this embodiment have the same structure. One end of the support rod 4 is connected to the fifth support plate 205 by fastener 6, and the other end is connected to the second support plate 202 or the fourth support plate 204 by fastener 6, so that the height of the fifth support plate 205 is higher than that of the second support plate 202 when in operation.

[0040] In one embodiment, such as Figure 1 , Figure 4 , Figure 5 , Figure 6 and Figure 7 As shown, the first support plate 201 has a first insertion hole 2015, the second support plate 202 has a second insertion hole, the third support plate 203 has a third insertion hole, the fourth support plate 204 has a fourth insertion hole, and the fifth support plate 205 has a fifth insertion hole. In the non-working state, the projections of the first insertion hole 2015, the second insertion hole, the third insertion hole, the fourth insertion hole, and the fifth insertion hole on the horizontal plane coincide. In this embodiment, as... Figure 4 , Figure 7As shown, the base 1 is provided with a sixth insertion hole 101, and the fixing plate 3 is provided with a seventh insertion hole. The projections of the first insertion hole 2015, the sixth insertion hole 101, and the seventh insertion hole on the horizontal plane coincide, so that the fixing rod 5 passes through the seventh insertion hole, the fourth insertion hole, the first insertion hole 2015, the second insertion hole, the fifth insertion hole, the third insertion hole, and the sixth insertion hole 101 in sequence from top to bottom. The fixing rod 5 is provided with external threads at both ends, and the base 1, the support plate group 2, and the fixing plate 3 are fixed in the non-working state with the help of nuts.

[0041] In this embodiment, as Figure 1 , Figure 3 , Figure 4 and Figure 5 As shown, there are four first insertion holes 2015, four second insertion holes, four third insertion holes, four fourth insertion holes, five fifth insertion holes, six sixth insertion holes 101 and four seventh insertion holes. That is, the entire maintenance device is fixed by four fixing rods 5 in the non-working state, and the four fixing rods 5 form a rectangular shape.

[0042] In one embodiment, such as Figure 3 , Figure 5 and Figure 6 As shown, the first support plate 201 includes a plate body 2011, a first side plate 2012, a second side plate 2013, and a third side plate 2014. The first side plate 2012, the second side plate 2013, and the third side plate 2014 extend from the same side of the plate body 2011. The first side plate 2012 and the second side plate 2013 are arranged perpendicularly, while the first side plate 2012 and the third side plate 2014 are arranged parallel to each other. The first side plate 2012 and the third side plate 2014 are respectively provided with clearance grooves 2019. The clearance grooves 2019 accommodate protrusions (such as bolts) on the top of the converter cabinet 7, which improves the stability of the connection between the converter cabinet 7 and the maintenance device and also ensures the safety of the operators.

[0043] In one embodiment, such as Figure 5 , Figure 6 As shown, the plate body 2011 has protective holes 2016, and protective rings 2017 are provided on the inner peripheral walls of the protective holes 2016. Buffer pads 2018 are respectively provided on the end faces of the first side plate 2012, the second side plate 2013, and the third side plate 2014. In this embodiment, the plate body 2011 has three protective holes 2016, and each protective hole 2016 has a protective ring 2017 on its inner side wall. When workers reach into the protective holes 2016 to grasp the support plate, the protective rings 2017 provide protection, preventing the plate body 2011 from causing injury to hands or tools. In this embodiment, as... Figure 6As shown, buffer pads 2018 are provided on the end faces of the first side plate 2012, the second side plate 2013 and the third side plate 2014 facing the top surface of the converter cabinet 7, respectively. That is, the buffer pads 2018 play a buffering role to avoid rigid collision between the support plate and the converter cabinet 7 and damage to the top of the converter cabinet 7.

[0044] In this embodiment, each support plate has an anti-slip layer on its surface. Furthermore, adjacent support plates can be connected via plugging, magnetic attraction, or other methods to improve stability during use.

[0045] A method for using a maintenance device for a converter cabinet 7 for a wind turbine tower includes the following steps: (1) In the non-working state, the base 1, the support plate group 2 and the fixing plate 3 are stacked in sequence along the height direction, and the fixing rod 5 passes through the base 1, the support plate group 2 and the fixing plate 3 in sequence. The two ends of the fixing rod 5 are respectively connected to the fasteners 6, and the fasteners 6 make the base 1, the support plate group 2 and the fixing plate 3 stacked and fixed. (2) In the working state, the fixing rod 5 is separated from the base 1, the support plate group 2, and the fixing plate 3 respectively. The support plate group 2 is adapted to be positioned on the top of the converter cabinet 7 along its length direction. Figure 1 or Figure 8 (The number of support plate groups 2 in the X direction is selected according to the top of the converter cabinet 7) unfolds for personnel use.

[0046] The maintenance platform for wind turbine converter cabinets provided by this invention has the following advantages: (1) Before maintenance, it is in a non-working state, which makes it easy for operators to bring it into the narrow space of the wind turbine tower. Compared with an integrated device, it is more convenient to enter, exit and transport. During maintenance, it is in a working state, and the support plate group 2 is unfolded along the top of the converter cabinet 7. During use, it can be flexibly unfolded according to the length of the converter cabinet 7 to meet the needs of converter cabinets 7 of different lengths and improve the convenience of use; (2) Laying the support plate group 2 on the top of the converter cabinet 7 can protect it. The cabinet of the converter cabinet 7 is designed to meet the requirement that the top of the converter cabinet 7 cannot be stepped on directly; (3) The support plate group 2 is set along the length of the converter cabinet 7, so that the operator will not be injured by the protrusion on the top of the converter cabinet 7 when performing maintenance, thus protecting the safety of the operator; (4) The first side plate 2012 and the third side plate 2014 are respectively provided with clearance grooves 2019. The clearance grooves 2019 contain the protrusions (such as bolts) on the top of the converter cabinet 7, which improves the stability of the connection between the converter cabinet 7 and the maintenance device, and also ensures the safety of the operator.

[0047] As an alternative implementation, fastener 6 may also be a bolt, with the outer diameter of the bolt head being larger than the inner diameter of the through hole.

[0048] As an alternative implementation, the number of support plates can also be other numbers to accommodate different lengths of the top of the converter cabinet 7.

[0049] Although embodiments of the invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the invention, and such modifications and variations all fall within the scope defined by the appended claims.

Claims

1. A maintenance platform for a wind tower converter cabinet, having working and non-working states, characterized in that, include: Base (1); The support plate assembly (2) includes at least two support plates, and the length of the base (1) is greater than or equal to the length of the support plate assembly (2). The length of the support plate group (2) is greater than or equal to the length of the fixed plate (3); The fixing component includes a fixing rod (5) and a fastener (6); In the non-working state, the base (1), the support plate group (2) and the fixing plate (3) are stacked sequentially along the height direction, and the fixing rod (5) passes through the base (1), the support plate group (2) and the fixing plate (3) in sequence and is connected to the fastener (6); in the working state, the fixing rod (5) is separated from the support plate group (2), and the support plate group (2) is adapted to unfold along its length direction on the top of the converter cabinet (7).

2. The maintenance platform for the wind tower converter cabinet according to claim 1, characterized in that, The support plate group (2) includes a first support plate (201) and a second support plate (202). The lengths of the first support plate (201) and the second support plate (202) are not equal, and the widths of the first support plate (201) and the second support plate (202) are equal.

3. The maintenance platform for the wind tower converter cabinet according to claim 2, characterized in that, The support plate group (2) further includes a third support plate (203), a fourth support plate (204), and a fifth support plate (205). The lengths of the third support plate (203) and the fourth support plate (204) are not equal, the lengths of the fourth support plate (204) and the fifth support plate (205) are not equal, the length of the third support plate (203) and the first support plate (201) are not equal, the widths of the third support plate (203), the fourth support plate (204), and the fifth support plate (205) are equal, and the width of the third support plate (203) and the first support plate (201) are equal.

4. The maintenance platform for the wind tower converter cabinet according to claim 3, characterized in that, The number of the first support plate (201) and the second support plate (202) is at least two. The thickness of the first support plate (201), the second support plate (202), the third support plate (203), and the fourth support plate (204) are the same, so that the first support plate (201), the second support plate (202), the third support plate (203), and the fourth support plate (204) are set at the same height in the working state. The height of the fifth support plate (205) is higher than that of the first support plate (201).

5. The maintenance platform for the wind tower converter cabinet according to claim 4, characterized in that, It also includes a support rod (4), the fixed plate (3) has a "U" shaped cross section, the fixed plate (3) has a rib portion in its accommodating space, and the rib portion is connected to one end of the support rod (4) in the non-working state; The rib portion is a first rib portion (301), a second rib portion (302), and a third rib portion (303). The first rib portion (301) and the second rib portion (302) are parallel and spaced apart. The third rib portion (303) is located between the first rib portion (301) and the second rib portion (302). The third rib portion (303) is provided with a lifting hole (304).

6. The maintenance platform for the wind tower converter cabinet according to claim 5, characterized in that, In the working state, one end of the support rod (4) is connected to the fifth support plate (205), and the other end of the support rod (4) is connected to the second support plate (202) or the fourth support plate (204).

7. The maintenance platform for the wind tower converter cabinet according to claim 3, characterized in that, The first support plate (201) is provided with a first insertion hole (2015), the second support plate (202) is provided with a second insertion hole, the third support plate (203) is provided with a third insertion hole, the fourth support plate (204) is provided with a fourth insertion hole, and the fifth support plate (205) is provided with a fifth insertion hole. In the non-working state, the projections of the first insertion hole (2015), the second insertion hole, the third insertion hole, the fourth insertion hole, and the fifth insertion hole on the horizontal plane coincide.

8. The maintenance platform for the wind tower converter cabinet according to claim 3, characterized in that, The first support plate (201) includes a plate body (2011), a first side plate (2012), a second side plate (2013), and a third side plate (2014). The first side plate (2012), the second side plate (2013), and the third side plate (2014) extend from the same side of the plate body (2011). The first side plate (2012) and the second side plate (2013) are arranged perpendicularly, and the first side plate (2012) and the third side plate (2014) are arranged parallel to each other. The first side plate (2012) and the third side plate (2014) are respectively provided with clearance grooves (2019).

9. The maintenance platform for the wind tower converter cabinet according to claim 8, characterized in that, The plate body (2011) is provided with a protective hole (2016), and a protective ring (2017) is provided on the inner peripheral wall of the protective hole (2016). The end faces of the first side plate (2012), the second side plate (2013) and the third side plate (2014) are respectively provided with buffer pads (2018).

10. A method of using a maintenance platform for a wind tower converter cabinet, for using the maintenance platform for a wind tower converter cabinet as described in claim 1, characterized in that, In the non-working state, the base (1), support plate group (2) and fixing plate (3) are stacked in sequence along the height direction, and the fixing rod (5) passes through the base (1), support plate group (2) and fixing plate (3) in sequence. The two ends of the fixing rod (5) are respectively rotatably connected to fasteners (6), and the fasteners (6) make the base (1), support plate group (2) and fixing plate (3) stacked and fixed. In the working state, the support plate group (2) is adapted to unfold along its length direction on the top of the converter cabinet (7) for personnel use.

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