A special gas nitriding material rack for double-ended bolts of wind turbine units

Abstract

This invention discloses a special gas nitriding material rack for double-ended bolts in wind turbines, comprising a frame body and a support assembly. The support assembly is used to fix the double-ended bolts and is arranged circumferentially along the frame body. The support assembly includes a first support plate and a second support plate, which form an angle. The first support plate is fixed to the frame body, and the second support plate is rotatably mounted on the frame body. The angle between the first and second support plates can be adjusted by rotating the second support plate to clamp double-ended bolts of different sizes. This invention ensures sufficient contact between the double-ended bolts and ammonia gas, improving the nitriding effect.

Description

Technical Field

[0001] This invention relates to the field of gas nitriding technology, and in particular to a gas nitriding material rack for double-ended bolts of wind turbine units. Background Technology

[0002] Gas nitriding of bolts is an effective metal surface treatment technology that can significantly improve the hardness and corrosion resistance of bolts, thereby increasing their service life and reliability. This technology primarily involves exposing the bolts to a nitrogen-containing environment. Under specific temperature and pressure conditions, the nitrogen reacts chemically with the metal surface to form a nitride layer. During gas nitriding, the surface properties of the bolts are significantly improved. First, the nitride layer enhances the bolt's corrosion resistance, allowing it to maintain good performance in various corrosive environments. Furthermore, gas nitriding can improve the surface roughness of the bolts, resulting in better fit during assembly. However, some problems affect the effectiveness and widespread application of this technology. The limited number of bolts that can be fed onto the gas nitriding rack may impact large-scale production or processes involving large quantities of materials. Furthermore, stacking bolts together for nitriding can cause overlap, affecting the nitriding effect. Summary of the Invention

[0003] The main objective of this invention is to provide a special gas nitriding material rack for double-ended bolts in wind turbine generators, aiming to...

[0004] To achieve the above objectives, the present invention proposes a special gas nitriding material rack for double-ended bolts of wind turbine units, comprising:

[0005] Frame;

[0006] A support assembly for fixing double-ended bolts is provided, and the support assembly is arranged circumferentially along the frame. The support assembly includes a first support plate and a second support plate, which form an angle. The first support plate is fixed to the frame, and the second support plate is rotatably disposed on the frame so as to adjust the angle between the first support plate and the second support plate by rotating the second support plate to clamp double-ended bolts of different sizes.

[0007] Optionally, the support assembly further includes a sleeve column, which is disposed on the frame and located close to the first support plate. One end of the second support plate is sleeved on the outer periphery of the sleeve column and rotates along the sleeve column to adjust the included angle between the first support plate and the second support plate.

[0008] Optionally, the support assembly further includes a stop, the two ends of which are detachably connected to the first support plate and the second support plate, respectively, so that the first support plate, the second support plate and the stop form a closed loop, and the double-headed bolt is disposed within the closed loop.

[0009] Optionally, a plurality of first positioning holes are provided at intervals on the first support plate, and the first positioning holes extend along the end of the first support plate near the frame towards the end away from the frame.

[0010] A plurality of second positioning holes are provided at intervals on the second support plate, and the second positioning holes extend along the end of the second support plate near the frame towards the end away from the frame.

[0011] One end of the stop is inserted into the first support plate through the first positioning hole, and the other end of the stop is inserted into the second support plate through the second positioning hole. The position of the stop can be adjusted by inserting it into either the first positioning hole or either the second positioning hole.

[0012] Optionally, the support assembly further includes a bracket, which is respectively disposed in the first positioning hole and the second positioning hole;

[0013] The two ends of the stop are provided with locking elements, the two ends of the stop are provided on the bracket, and the locking elements are provided on the side of the bracket away from the inner side of the included angle.

[0014] Optionally, the support includes:

[0015] A support column, one end of which is inserted into the first positioning hole or the second positioning hole;

[0016] A connecting seat is fixed to the other end of the support column, and a mounting groove is provided on the side of the connecting seat away from the support column;

[0017] The two ends of the stop are located in the mounting groove, and the stop is engaged with the bracket by means of a clip located outside the mounting groove.

[0018] Optionally, the connection between the stop and the clip is adapted to the mounting groove.

[0019] Optionally, the cross-section of the frame is a regular hexagon;

[0020] And / or, at least two frames are provided, and at least two frames are arranged along the first direction;

[0021] And / or, multiple support components are provided, and the multiple support components are arranged along the circumference of the frame and are arranged in the inner and outer rings of the frame. Multiple sleeves are provided, and each sleeve is arranged close to one of the first support plates.

[0022] Optionally, the gas nitride rack further includes a hoisting assembly, which is driven to the rack body to drive the rack body to rotate.

[0023] Optionally, the hoisting assembly includes:

[0024] Rings;

[0025] A connecting shaft, one end of which is fixedly connected to the lifting ring, and a first bevel gear is sleeved on the outer circumference of the connecting shaft;

[0026] A connecting block is located at the other end of the connecting shaft and is fixedly connected to the connecting shaft.

[0027] A connector is provided on the top of the frame, and the connector is provided with a connecting groove that is adapted to the connecting block;

[0028] The second bevel gear is connected to the first bevel gear in a transmission manner;

[0029] A drive motor is connected to the second bevel gear, and drives the frame to rotate through the cooperation of the first and second bevel gears.

[0030] In this invention, the support assembly is arranged circumferentially along the frame. One support assembly secures one double-ended bolt, allowing for simultaneous nitriding of multiple double-ended bolts on the frame, thus improving nitriding efficiency. The support assembly includes a first support plate and a second support plate. One end of the first support plate is fixed to the frame, and the other end extends away from the frame. The second support plate is positioned close to the first support plate and rotatably connected to the frame. By rotating the second support plate, the angle between the first and second support plates is adjusted, fixing the double-ended bolt within the angle between them. Rotating the second support plate adjusts the angle to a suitable degree to accommodate double-ended bolts of different sizes. This allows for the clamping of double-ended bolts of varying sizes on the frame for nitriding, offering high versatility. Furthermore, by securing one double-ended bolt with one support assembly, the bolts are dispersed on the frame, preventing a large number of bolts from being placed on the frame, which could lead to insufficient nitriding. The dispersed bolts ensure sufficient contact with ammonia gas, improving the nitriding effect. Attached Figure Description

[0031] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0032] Figure 1 This is a schematic diagram of the structure of the special gas nitride holder for double-headed bolts of the wind turbine of the present invention;

[0033] Figure 2 for Figure 1 A magnified view of a section at point A in the middle;

[0034] Figure 3 for Figure 1 A magnified view of a section at point B in the middle;

[0035] Figure 4 This is a schematic diagram of the structure of the second support plate in this invention;

[0036] Figure 5 This is a schematic diagram of the support structure in this invention;

[0037] Figure 6 This is a schematic diagram of the structure of the stop in this invention;

[0038] Figure 7 This is a schematic diagram of the hoisting assembly in this invention.

[0039] Explanation of icon numbers:

[0040] label name label name 100 Frame 200 Support components 210 First board 211 First positioning hole 220 Second board 221 Second positioning hole 222 Connection hole 230 Column 240 baffle 241 Cards 250 support 251 Support column 252 Connector 300 Lifting components 310 Rings 320 Connecting shaft 321 First bevel gear 330 Connecting block 340 connector 350 Second bevel gear

[0041] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0042] 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 a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0043] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0044] In this invention, unless otherwise explicitly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0045] Furthermore, if the embodiments of this invention involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the meaning of "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution that simultaneously satisfies A and B. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0046] The limited number of bolts that can be fed into the gas nitriding rack may affect the process flow of large-scale production or large quantities of materials. If bolts are stacked together for nitriding, the bolts will overlap, which will affect the nitriding effect.

[0047] To solve the above-mentioned technical problems, the present invention provides a frame and a support assembly. The support assembly includes a first support plate and a rotatable second support plate. The second support plate can be rotated to adjust the angle with the first support plate to clamp the double-headed bolts, which can avoid the stacking of a large number of double-headed bolts. The double-headed bolts are dispersed and fixed on the frame, which increases the contact area with ammonia gas and improves the nitriding efficiency.

[0048] This invention proposes a special gas nitride holder for double-headed bolts of wind turbine units.

[0049] In embodiments of the present invention, such as Figure 1 and Figure 2 As shown, the special gas nitriding material rack for the double-ended bolts of this wind turbine includes:

[0050] Frame size 100;

[0051] A support assembly 200 is used to fix double-ended bolts and is arranged circumferentially along the frame 100. The support assembly 200 includes a first support plate 210 and a second support plate 220, which form an angle. The first support plate 210 is fixed to the frame 100, and the second support plate 220 is rotatably disposed on the frame 100 so as to adjust the angle between the first support plate 210 and the second support plate 220 to clamp double-ended bolts of different sizes.

[0052] In the technical solution of this invention, the support assembly 200 is arranged circumferentially along the frame 100. Double-ended bolts are fixed by the support assembly 200, with one support assembly 200 fixing one double-ended bolt. Multiple support assemblies can simultaneously nitrid multiple double-ended bolts on the frame 100, improving nitriding efficiency. Furthermore, the support assembly 200 includes a first support plate 210 and a second support plate 220. One end of the first support plate 210 is fixed to the frame 100, and the other end extends away from the frame 100. The second support plate 220 is arranged close to the first support plate 210 on the frame 100 and is rotatably connected to the frame 100. Rotation of the second support plate... 220. Adjust the angle between the first support plate 210 and the second support plate 220 to fix the double-ended bolt between the angle between the first support plate 210 and the second support plate 220. By rotating the second support plate 220, the angle is adjusted to a suitable degree to accommodate double-ended bolts of different sizes. It can clamp double-ended bolts of different sizes on the frame 100 for nitriding, which is highly versatile. Moreover, by fixing one double-ended bolt with a support component 200, the double-ended bolts are dispersed and fixed on the frame 100, which avoids a large number of double-ended bolts being placed on the frame 100, resulting in insufficient nitriding. The dispersed double-ended bolts are in full contact with ammonia gas, which can improve the nitriding effect.

[0053] The height of the frame 100 is greater than the height of the first support plate 210 and the second support plate 220. When the first support plate 210 and the second support plate 220 are installed on the frame 100, the structure is more stable.

[0054] It should be noted that the end of the double-ended bolt is provided with a nut. Since the diameter of the nut is larger than the diameter of the double-ended bolt, the double-ended bolt itself is clamped by the first support plate 210 and the second support plate 220. One end of the nut can be snapped onto the upper part of the first support plate 210 and the second support plate 220 to fix the double-ended bolt and perform nitriding. The double-ended bolt can have a nut at one end or at both ends, as long as one end of the nut can be snapped onto the upper part of the first support plate 210 and the second support plate 220. In addition, this nitriding material rack is not only suitable for double-ended bolts, but the double-ended bolt can also be replaced with any structure with different shaft end diameters.

[0055] Optionally, the support assembly 200 further includes a sleeve 230, which is disposed on the frame 100 and is located close to the first support plate 210. One end of the second support plate 220 is sleeved on the outer periphery of the sleeve 230 and rotates along the sleeve 230 to adjust the included angle between the first support plate 210 and the second support plate 220.

[0056] In this embodiment, as Figure 3 and Figure 4As shown, the sleeve post 230 is set on the frame 100 and close to the first support plate 210. One end of the second support plate 220 is provided with a connecting hole 222. The second support plate 220 is sleeved on the sleeve post 230 through the connecting hole 222, so that the second support plate 220 can rotate along the sleeve post 230 to adjust the angle between the first support plate 210 and the second support plate 220. The second support plate 220 can be rotated according to the double-headed bolts of different diameters, which has strong versatility.

[0057] Damping can be installed between the second support plate 220 and the sleeve 230 to increase the resistance to rotation and prevent the second support plate 220 from easily rotating and causing the double-headed bolts to fall off.

[0058] Optionally, the support assembly 200 also includes a stop 240, the two ends of which are detachably connected to the first support plate 210 and the second support plate 220 respectively, so that the first support plate 210, the second support plate 220 and the stop 240 form a closed loop, and the double-headed bolt is located in the closed loop.

[0059] In this embodiment, as Figure 2 As shown, the stop 240 is used to connect the first support plate 210 and the second support plate 220, so that the stop 240, the first support plate 210 and the second support plate 220 form a closed loop. The double-ended bolt passes through the closed loop, and the nut end is stuck on the first support plate 210 and the second support plate 220 to fix the double-ended bolt. The stop 240 can prevent the double-ended bolt from falling off. In addition, the stop 240, the first support plate 210 and the second support plate 220 are all detachably connected, which makes it easy to put the double-ended bolt into and remove it from the closed loop, and also makes it easy to adjust the size of the closed loop. The detachable connection structure makes it easy to replace parts and reduce maintenance costs.

[0060] Optionally, a plurality of first positioning holes 211 are provided at intervals on the first support plate 210, and the first positioning holes 211 extend along the end of the first support plate 210 near the frame 100 toward the end away from the frame 100.

[0061] A plurality of second positioning holes 221 are provided at intervals on the second support plate 220. The second positioning holes 221 extend along the end of the second support plate 220 near the frame 100 toward the end away from the frame 100.

[0062] One end of the stop 240 is inserted into the first support plate 210 through the first positioning hole 211, and the other end of the stop 240 is inserted into the second support plate 220 through the second positioning hole 221. The position of the stop 240 can be adjusted by inserting it into any one of the first positioning holes 211 and any one of the second positioning holes 221.

[0063] In this embodiment, as Figure 2 and Figure 4As shown, one end of the first support plate 210 is fixed to the frame 100, and the other end extends away from the frame 100. Multiple first positioning holes 211 are spaced apart on the top of the first support plate 210, extending along the length of the top of the first support plate 210. One end of the second support plate 220 is rotatably connected to the frame 100, and the other end extends away from the frame 100. Multiple second positioning holes 221 are spaced apart on the top of the second support plate 220, extending along the length of the top of the second support plate 220. Both ends of the stop member 240 are respectively inserted into the first positioning holes 211 and the second positioning holes 221, allowing passage... By inserting different first positioning holes 211 and second positioning holes 221, the size of the closed loop can be adjusted to accommodate double-ended bolts of different sizes. When the cross-sectional diameter of the double-ended bolt is small, the included angle between the first support plate 210 and the second support plate 220 is small, and the stop 240 connects to the first positioning hole 211 and the second positioning hole 221 close to the frame 100 to clamp the double-ended bolt. When the cross-sectional diameter of the double-ended bolt is large, the included angle between the first support plate 210 and the second support plate 220 is large. At this time, the two ends of the stop 240 connect to the first positioning hole 211 and the second positioning hole 221 far away from the frame 100 to clamp the double-ended bolt. It is suitable for double-ended bolts of different sizes and has strong versatility.

[0064] Optionally, the support assembly 200 further includes a bracket 250, which is respectively disposed in the first positioning hole 211 and the second positioning hole 221;

[0065] Both ends of the stop 240 are provided with locking pieces 241. Both ends of the stop 240 are located on the bracket 250, and the locking pieces 241 are located on the side of the bracket 250 away from the inner side of the included angle.

[0066] In this embodiment, as Figure 2 and Figure 5As shown, a bracket 250 is respectively installed on the first support plate 210 and the second support plate 220. The bracket 250 is placed in the first positioning hole 211 and the second positioning hole 221 at appropriate positions according to the size of the double-ended bolt. The two ends of the stop member 240 are mounted on top of the two brackets 250. The brackets 250 support the stop member 240. A locking piece 241 protrudes from each end of the stop member 240. When the stop member 240 is mounted on top of the bracket 250, the locking piece 241 is positioned on the side of the bracket 250 away from the inner side of the included angle. The locking piece 241... 41. The bracket 250, the first positioning hole 211, and the second positioning hole 221 enable the stop 240 to engage and further clamp the double-ended bolt. By setting two brackets 250, when taking out or putting in the double-ended bolt, the stop 240 can be picked up directly. At this time, the first support plate 210 and the second support plate 220 are at an open angle, which is convenient for taking out or putting in. When inserting the double-ended bolt, the bracket 250 can be placed directly in the first positioning hole 211 and the second positioning hole 221 in a suitable position, and the stop 240 can be engaged and fixed by the clamp 241, which is convenient for taking out or putting in.

[0067] Optionally, the support 250 includes:

[0068] The support column 251 has one end inserted into the first positioning hole 211 or the second positioning hole 221;

[0069] The connecting seat 252 is fixed to the other end of the support column 251, and the side of the connecting seat 252 away from the support column 251 is provided with an installation groove;

[0070] The two ends of the stop 240 are located in the mounting groove, and the stop 240 is snapped onto the bracket 250 by the clip 241 located outside the mounting groove.

[0071] In this embodiment, as Figure 5 As shown, the bracket 250 includes a support column 251 and a connecting seat 252. The support column 251 is located at the bottom of the connecting seat 252 and is adapted to the first positioning hole 211 and the second positioning hole 221. An installation groove is provided on the upper part of the connecting seat 252. The installation groove is used to place the stop 240. The clamp 241 is located on the side of the installation groove away from the inside of the included angle to prevent the stop 240 from falling off and further prevent the double-headed bolt from falling off.

[0072] Optionally, the connection between the stop 240 and the clip 241 is adapted to the mounting slot.

[0073] In this embodiment, as Figure 2 , Figure 5 and Figure 6The mounting slot can be set as an arc-shaped slot, in which case the connection between the stop 240 and the clip 241 is provided with rounded corners that are adapted to the arc shape, so that the mounting slot can be better connected with the clip 241 and the stop 240. If the mounting slot is set as a square slot, the connection between the stop 240 and the clip 241 is set as a right-angle connection, so that the snap-fit ​​is tighter. Here, the shape of the mounting slot is not limited, as long as the clip 241 can be snapped in place.

[0074] Optionally, the cross-section of the frame 100 is a regular hexagon;

[0075] And / or, at least two frames 100 are provided, and at least two frames 100 are arranged along the first direction;

[0076] And / or, multiple support components 200 are provided, and the multiple support components 200 are arranged along the circumference of the frame 100 and are arranged in the inner and outer rings of the frame 100. Multiple sleeves 230 are provided, and each sleeve 230 is arranged close to a first support plate 210.

[0077] In this embodiment, the cross-section of the frame 100 is a regular hexagon. Compared with other shapes of frame 100, the structure is more stable and aesthetically pleasing. The regular hexagon is close to a circle in space, and occupies less space than a circle. Moreover, placing double-ended bolts on the regular hexagon will not cause interference due to angle. Each side of the frame 100 is provided with a support component 200. When clamping the double-ended bolts, the double-ended bolts are clamped symmetrically along the central axis of the frame 100 to prevent the frame 100 from tilting and collapsing.

[0078] In another embodiment, such as Figure 1 As shown, at least two frames 100 are provided, arranged along a first direction, which is the vertical direction. Adjacent frames 100 are connected by connecting rods, which connect to the ends of the frames 100. When the cross-section of the frame 100 is a regular hexagon, six connecting rods are provided between any two adjacent frames 100. The six connecting rods connect the six vertices of the frame 100, so that at least two frames 100 are arranged in layers. In addition, additional reinforcing plates are welded to the connecting rods, which not only improves the support strength and load-bearing capacity of the frame, but also avoids stress concentration and improves service life. The regular hexagonal frame 100 structure is stable and can not only bear more double-ended bolts, but the layered arrangement of the frames 100 also allows the double-ended bolts to be arranged in layers, which facilitates more contact between the double-ended bolts and ammonia gas, making it easier for them to nitrid.

[0079] In another embodiment, such as Figure 3As shown, multiple support components 200 are provided, and support components 200 are provided on both the inner and outer rings of the frame 100. Multiple sleeve columns 230 are provided, and each sleeve column 230 is provided close to a first support plate 210. A second support plate 220 is sleeved on 230 to form an angle with the first support plate 210.

[0080] Optionally, the gas nitriding material rack also includes a lifting assembly 300, which is drivenly connected to the frame 100 to drive the frame 100 to rotate.

[0081] In this embodiment, as Figure 1 As shown, the hoisting assembly 300 is set on the top of the frame 100. The frame 100 is driven to rotate by the hoisting assembly 300, which in turn drives the double-headed bolts to rotate, so that the double-headed bolts can fully contact the ammonia gas, thereby improving the nitriding efficiency.

[0082] Optionally, the lifting assembly 300 includes:

[0083] Rings 310;

[0084] A connecting shaft 320 is fixedly connected to a lifting ring 310 at one end, and a first bevel gear 321 is sleeved on the outer periphery of the connecting shaft 320.

[0085] A connecting block 330 is located at the other end of the connecting shaft 320 and is fixedly connected to the connecting shaft 320.

[0086] The connector 340 is located on the top of the frame 100, and the connector 340 is provided with a connecting groove that is adapted to the connecting block 330.

[0087] The second bevel gear 350 is connected to the first bevel gear 321 in a transmission manner;

[0088] The drive motor is connected to the second bevel gear 350 and drives the frame 100 to rotate through the cooperation of the first bevel gear 321 and the second bevel gear 350.

[0089] In this embodiment, as Figure 7As shown, the hoisting assembly 300 includes a lifting ring 310, a connecting shaft 320, a connecting block 330, a connecting piece 340, and a second bevel gear 350. A drive motor is connected to the second bevel gear 350 and drives the second bevel gear 350 to rotate. The second bevel gear 350 is connected to the first bevel gear 321. The first bevel gear 321 is sleeved on the outer circumference of the connecting shaft 320. The lifting ring 310 is connected to the connecting piece 340 through the connecting shaft 320 and the connecting block 330. The connecting piece 340 is fixedly connected to the frame 100. When the first bevel gear 321 rotates, it drives the connecting shaft 320 and the connecting piece 340 to grip the frame, which in turn drives the frame 100 to rotate, causing the double-ended bolt to rotate. The double-ended bolt comes into full contact with the ammonia gas, improving the nitriding efficiency. The frame 100 rotates smoothly through the transmission of the first bevel gear 321 and the second bevel gear 350.

[0090] The above description is merely an optional embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural transformations made using the contents of the present invention specification and drawings under the inventive concept of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. A special gas nitriding material rack for double-ended bolts of wind turbine units, characterized in that, The gas nitride rack includes: The frame is provided at least two, and at least two of the frame are arranged along a first direction; A support assembly is provided for fixing double-ended bolts and is arranged circumferentially along the frame. The support assembly includes a first support plate, a second support plate, and a stop. The two ends of the stop are detachably connected to the first support plate and the second support plate, respectively, so that the first support plate, the second support plate, and the stop form a closed loop. The double-ended bolts are disposed within the closed loop. An angle is formed between the first support plate and the second support plate. The first support plate is fixed to the frame, and the second support plate is rotatably disposed on the frame so that the angle between the first support plate and the second support plate can be adjusted by rotating the second support plate to clamp double-ended bolts of different sizes.

2. The gas nitriding material rack for double-ended bolts of wind turbine units as described in claim 1, characterized in that, The support assembly also includes a sleeve column, which is disposed on the frame and is located close to the first support plate. One end of the second support plate is sleeved on the outer periphery of the sleeve column and rotates along the sleeve column to adjust the included angle between the first support plate and the second support plate.

3. The gas nitriding material rack for double-ended bolts of wind turbine units as described in claim 2, characterized in that, A plurality of first positioning holes are provided at intervals on the first support plate, and the first positioning holes extend along the end of the first support plate near the frame towards the end away from the frame. A plurality of second positioning holes are provided at intervals on the second support plate, and the second positioning holes extend along the end of the second support plate near the frame towards the end away from the frame. One end of the stop is inserted into the first support plate through the first positioning hole, and the other end of the stop is inserted into the second support plate through the second positioning hole. The position of the stop can be adjusted by inserting it into either the first positioning hole or either the second positioning hole.

4. The gas nitriding material rack for double-ended bolts of wind turbine units as described in claim 3, characterized in that, The support assembly further includes a bracket, which is respectively disposed in the first positioning hole and the second positioning hole; The two ends of the stop are provided with locking elements, the two ends of the stop are provided on the bracket, and the locking elements are provided on the side of the bracket away from the inner side of the included angle.

5. The gas nitriding material rack for double-ended bolts of wind turbine units as described in claim 4, characterized in that, The support includes: A support column, one end of which is inserted into the first positioning hole or the second positioning hole; A connecting seat is fixed to the other end of the support column, and a mounting groove is provided on the side of the connecting seat away from the support column; The two ends of the stop are located in the mounting groove, and the stop is engaged with the bracket by means of a clip located outside the mounting groove.

6. The gas nitriding material rack for double-ended bolts of wind turbine units as described in claim 5, characterized in that, The connection between the stop and the clip is adapted to the mounting groove.

7. The gas nitriding material rack for double-ended bolts of wind turbine units as described in any one of claims 2-6, characterized in that, The cross-section of the frame is a regular hexagon; And / or, at least two frames are provided, and at least two frames are arranged along the first direction; And / or, multiple support components are provided, and the multiple support components are arranged along the circumference of the frame and are arranged in the inner and outer rings of the frame. Multiple sleeves are provided, and each sleeve is arranged close to one of the first support plates.

8. The gas nitriding material rack for double-headed bolts of wind turbine units as described in claim 7, characterized in that, The gas nitride rack also includes a hoisting assembly, which is driven to rotate the rack.

9. The gas nitriding material rack for double-ended bolts of wind turbine units as described in claim 8, characterized in that, The hoisting assembly includes: Rings; A connecting shaft, one end of which is fixedly connected to the lifting ring, and a first bevel gear is sleeved on the outer circumference of the connecting shaft; A connecting block is located at the other end of the connecting shaft and is fixedly connected to the connecting shaft. A connector is provided on the top of the frame, and the connector is provided with a connecting groove that is adapted to the connecting block; The second bevel gear is connected to the first bevel gear in a transmission manner; A drive motor is connected to the second bevel gear, and drives the frame to rotate through the cooperation of the first and second bevel gears.

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