A special tooling for heat treatment of wind turbine yaw gear shaft

Abstract

This invention relates to the field of gear shaft heat treatment technology, specifically a special tooling for heat treatment of wind turbine yaw gear shafts; it includes a worktable, multiple support rods mounted on the top of the worktable, and multiple tooling boxes mounted on the support rods, and also includes [further details needed]. The beneficial effects are as follows: Based on the downward sliding action of the support plate using the first telescopic rod, the outer wall of the gear shaft can be automatically clamped. When the rotating roller rotates, its half-insertion inside the storage tank allows the purified cooling water inside the storage tank to wet the outer wall of the rotating roller, thereby causing the rotating roller to rotate and wet and cool the outer wall of the gear shaft. This solves the problem that after heat treatment, the metal may release a metallic odor when heated, and a coolant odor may be released when cooled, which could spread into the surrounding environment and cause pollution. This invention can eliminate the odor generated during the cooling of the gear shaft, improving the air quality of the surrounding environment.

Description

Technical Field

[0001] This invention relates to the field of gear shaft heat treatment technology, specifically a special tooling for heat treatment of wind turbine yaw gear shafts. Background Technology

[0002] A gear shaft is a mechanical part that supports rotating parts and rotates with them to transmit motion, torque or bending moment. It is generally a metal rod, and each section can have a different diameter. The rotating parts in the machine are mounted on the shaft.

[0003] In the mechanical manufacturing process, heat treatment is an essential step. Heat treatment refers to a metal hot working process in which materials are heated, held at a certain temperature and cooled in a solid state to obtain the desired structure and properties. In the production of gear shafts, in order to improve the surface wear resistance, fatigue strength and core toughness of the gear shafts, carburizing and quenching are usually used for heat treatment.

[0004] In the existing technology, workers install the heat-treated gear shaft on a tooling and then cool it before use;

[0005] However, when installing and cooling the gear shaft, workers need to manually fix its outer wall separately, which increases the number of steps required to fix the gear shaft. Since the gear shaft is made of metal, it may release a metallic odor when heated and a coolant odor when cooled. These odors can spread into the surrounding environment, causing pollution and affecting the work efficiency of workers in the surrounding area.

[0006] Therefore, we need a special tooling for heat treatment of wind turbine yaw gear shafts to solve the problem of manually fixing the outer wall of the gear shaft to the outside, which increases the number of steps required for fixing the gear shaft. In addition, after heat treatment, the metal may release a metallic odor when heated and a coolant odor when cooled. These odors may spread into the surrounding environment and cause pollution. This tooling can automatically clamp and install the gear shaft and eliminate the odor generated during the cooling process, thereby improving the air quality of the surrounding environment. Summary of the Invention

[0007] The purpose of this invention is to solve the problem that manual installation of the outer wall of the gear shaft is required, which increases the number of steps involved in fixing the gear shaft. Furthermore, after heat treatment, the metal may release a metallic odor when heated and a coolant odor when cooled, which can pollute the surrounding environment. This application provides a special tooling for heat treatment of wind turbine yaw gear shafts, which can automatically clamp and install the gear shaft and eliminate the odor generated during cooling, thereby improving the air quality of the surrounding environment.

[0008] To achieve the above objectives, the present invention provides the following technical solution: a special tooling for heat treatment of wind turbine yaw gear shafts, comprising a worktable, multiple support rods mounted on the top of the worktable, and multiple tooling boxes mounted on the support rods, and further comprising:

[0009] The mounting clamping mechanism is used to automatically clamp and fix the heat-treated gear shaft. The mounting clamping mechanism is located inside the tooling box.

[0010] A rotating cooling mechanism is used to cool the outer wall of the heat-treated gear shaft. The rotating cooling mechanism is located inside the tooling box.

[0011] An extrusion mechanism is used to extrude the purifying agent into the interior of the rotating cooling mechanism, and the extrusion mechanism is located inside the tooling box.

[0012] A stirring mechanism is used to stir the purified cooling water inside the rotating cooling mechanism, and the stirring mechanism is located inside the rotating cooling mechanism.

[0013] Preferably, the rotating cooling mechanism includes a servo motor fixedly connected to the bottom of the outer wall of the tooling box. The output end of the servo motor is fixedly connected to a rotating shaft, and the top of the rotating shaft extends rotatably into the interior of the tooling box. The top of the rotating shaft is fixedly connected to an installation box inside the tooling box. Supporting vertical plates are fixedly connected to both sides of the interior of the tooling box. A storage tank is fixedly connected to one side of the supporting vertical plate. A rotating roller is rotatably connected to one side of the storage tank. A wiping cloth is provided on the outer wall of the rotating roller.

[0014] Preferably, the bottom of the tooling box is provided with a rotating groove, and the rotating shaft extends into the interior of the tooling box through the rotating groove. The two supporting vertical plates are located on both sides of the mounting box and are arranged symmetrically.

[0015] Preferably, half of the rotating roller rotates inside the storage tank, and the storage tank is provided with a water injection hole.

[0016] Preferably, the mounting clamping mechanism includes a first telescopic rod, a support plate is fixedly connected to the top of the first telescopic rod, a second telescopic rod is fixedly connected to both sides of the inner wall of the mounting box, and an arc-shaped clamping block is fixedly connected to the end of the second telescopic rod away from the mounting box.

[0017] Preferably, the arc-shaped clamping block initially rests against the outer wall of the support plate, the gear shaft to be heat-treated is placed above the support plate, the interior of the rotating shaft is hollow, and air inlets are provided at the bottom of the first telescopic rod and the mounting box and the top of the rotating shaft. The interior of the first telescopic rod and the rotating shaft are connected through the air inlets, and the end of the arc-shaped clamping block away from the second telescopic rod is clamped and fitted against the outer wall of the gear shaft to be treated.

[0018] Preferably, the extrusion mechanism includes a hollow rotating disk rotatably connected to the outer wall of a rotating shaft, and the rotating disk is in communication with the interior of the rotating shaft. An air inlet pipe is connected to one side of the rotating disk. A storage chamber is formed at the lower interior of the supporting vertical plate. A third telescopic rod is fixedly connected to the bottom of the inner wall of the storage chamber. A compression plate is fixedly connected to the top of the third telescopic rod. The outer wall of the compression plate is slidably fitted to the inner wall of the storage chamber. An air outlet is formed on one side of the inner wall of the storage chamber below the compression plate. An inlet is formed on one side of the top of the storage chamber, and a one-way valve that only allows outflow is provided inside the inlet. The storage chamber is connected to the interior of the storage tank through the inlet.

[0019] Preferably, the agitation mechanism includes a rotating rod rotatably connected to the storage tank, with the top of the rotating rod extending rotatably to the outside of the storage tank. A fixed plate is fixedly connected to the top of the rotating rod, and a torsion spring is fixedly connected to the bottom of the fixed plate. An agitating plate is fixedly connected to the outer side wall of the rotating rod inside the storage tank. A mounting magnetic block is fixedly connected to one side of the agitating plate, and a rotating magnetic block is embedded in the outer wall of the rotating roller.

[0020] Compared with the prior art, the beneficial effects of the present invention are:

[0021] This invention proposes a special tooling for heat treatment of wind turbine yaw gear shafts. Based on the downward sliding action of the support plate using the first telescopic rod, the arc-shaped clamps on both sides of the support plate, using the action of the second telescopic rod, automatically clamp the outer wall of the gear shaft. This eliminates the need for manual individual fixing of the outer wall, thus reducing the number of steps required for manual fixing. The invention provides an automatic clamping and installation solution for the gear shaft to be installed. When the rotating roller rotates, based on half of its position in the storage... The function of the agent tank is to allow the purified cooling water inside to wet the outer wall of the rotating roller, thereby causing the rotating roller to rotate and wet and cool the outer wall of the gear shaft. Based on the effect of the purifying agent and water mixing, the metallic odor generated after the heat treatment of the gear shaft can be purified and removed. Through this structure, the problem of metallic odor being released when the metal is heated and coolant odor being released when it is cooled after heat treatment is solved. These odors spread into the surrounding environment and cause pollution. The structure can eliminate the odor generated when the gear shaft is cooled, thus improving the air quality of the surrounding environment. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of the present invention;

[0023] Figure 2 This is a top view of the structure of the present invention;

[0024] Figure 3 This is a schematic diagram of the bottom side structure of the present invention;

[0025] Figure 4 This is a cross-sectional schematic diagram of the tooling box of the present invention;

[0026] Figure 5 For the present invention Figure 4 Enlarged structural diagram at point A;

[0027] Figure 6 This is a cross-sectional structural diagram of the supporting vertical plate and the storage tank of the present invention.

[0028] In the diagram: 1. Workbench; 2. Support rod; 3. Tooling box; 4. Servo motor; 401. Rotating shaft; 402. Mounting box; 403. Supporting vertical plate; 404. Storage tank; 405. Rotating roller; 5. First telescopic rod; 501. Support plate; 502. Second telescopic rod; 503. Arc-shaped clamping block; 6. Rotating disk; 601. Air inlet pipe; 602. Storage chamber; 603. Third telescopic rod; 604. Extrusion slide plate; 7. Rotating rod; 701. Fixed disk; 702. Torsion spring; 703. Stirring plate; 704. Mounting magnet; 705. Rotating magnet. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of the present invention clear and complete, the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only some, not all, embodiments of the present invention, and are merely illustrative of the embodiments of the present invention. They are not intended to limit 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.

[0030] In the description of this invention, it should be noted that the terms "center," "middle," "upper," "lower," "left," "right," "inner," "outer," "top," "bottom," "side," "vertical," and "horizontal," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "a," "first," "second," "third," "fourth," "fifth," and "sixth" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0031] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0032] For purposes of simplicity and illustration, the principles of the embodiments are described primarily by way of example. In the following description, numerous specific details are set forth to provide a thorough understanding of the embodiments. However, it will be apparent to those skilled in the art that these embodiments may not be limited to these specific details in practice. In some instances, well-known methods and structures have not been described in detail to avoid unnecessarily obscuring these embodiments. Furthermore, all embodiments can be used in combination with each other.

[0033] Example 1

[0034] Please see Figures 1 to 6This invention provides a special tooling for heat treatment of wind turbine yaw gear shafts, including a workbench 1, multiple support rods 2 mounted on the top of the workbench 1, and multiple tooling boxes 3 mounted on the support rods 2. It also includes a clamping mechanism for automatically clamping and fixing the heat-treated gear shaft. The clamping mechanism is located inside the tooling box 3. The clamping mechanism includes a first telescopic rod 5. A support plate 501 is fixedly connected to the top of the first telescopic rod 5. Second telescopic rods 502 are fixedly connected to both sides of the inner wall of the tooling box 402. An arc-shaped clamping block 503 is fixedly connected to the end of the second telescopic rod 502 away from the tooling box 402.

[0035] In a further detailed description of the present invention, the arc-shaped clamping block 503 initially rests against the outer wall of the support plate 501, the gear shaft to be heat-treated is placed above the support plate 501, the interior of the rotating shaft 401 is hollow, and air inlets are provided at the bottom of the first telescopic rod 5 and the mounting box 402 and the top of the rotating shaft 401. The interior of the first telescopic rod 5 and the rotating shaft 401 are connected through the air inlets, and the end of the arc-shaped clamping block 503 away from the second telescopic rod 502 is clamped and fitted against the outer wall of the gear shaft to be treated.

[0036] With the above technical solution, in specific use: when the worker is cooling the heat-treated gear shaft, they can directly place the gear shaft to be installed on the top of the support plate 501, and then press the gear shaft down. Accordingly, the support plate 501 slides down according to the action of the first telescopic rod 5, thereby causing the arc-shaped clamps 503 on both sides of the support plate 501 to disengage from it. Then, the arc-shaped clamps 503 automatically clamp the outer wall of the gear shaft placed above the support plate 501 according to the action of the second telescopic rod 502. With this structure, based on the downward sliding action of the support plate 501 using the first telescopic rod 5, the arc-shaped clamps 503 on both sides can automatically clamp the outer wall of the gear shaft using the action of the second telescopic rod 502. This eliminates the need for the worker to manually fix the outer wall separately, thus reducing the number of steps required for fixing the outer wall of the gear shaft. This solves the problem of the need for the worker to manually fix the outer wall separately, which increases the number of steps required for fixing the outer wall of the gear shaft. The gear shaft to be installed can be automatically clamped and installed.

[0037] like Figure 1-6As shown, based on the above embodiment one, a rotating cooling mechanism is provided to cool the outer wall of the heat-treated gear shaft. The rotating cooling mechanism is located inside the tooling box 3. The rotating cooling mechanism includes a servo motor 4 fixedly connected to the bottom of the outer wall of the tooling box 3. The output end of the servo motor 4 is fixedly connected to a rotating shaft 401, and the top of the rotating shaft 401 extends rotatably into the interior of the tooling box 3. The top of the rotating shaft 401 is fixedly connected to an installation box 402 inside the tooling box 3. Supporting vertical plates 403 are fixedly connected to both sides inside the tooling box 3. A storage tank 404 is fixedly connected to one side of the supporting vertical plate 403. A rotating roller 405 is rotatably connected to one side of the storage tank 404. A wiping cloth is provided on the outer wall of the rotating roller 405.

[0038] In a further detailed description of the present invention, the bottom of the tooling box 3 is provided with a rotating groove, the rotating shaft 401 extends into the interior of the tooling box 3 through the rotating groove, the two supporting vertical plates 403 are located on both sides of the mounting box 402 and are arranged symmetrically, half of the rotating roller 405 rotates inside the storage tank 404, and the storage tank 404 is provided with a water injection hole.

[0039] With the above technical solution, in specific use: after the gear shaft is clamped and installed, its outer wall is in contact with the wiping cloth on the outer wall of the rotating roller 405. At this time, the servo motor 4 is turned on to make the servo motor 4 work. When the servo motor 4 works, it drives the rotating shaft 401 to rotate, which in turn drives the mounting box 402 to rotate, thereby driving the gear shaft installed inside the mounting box 402 to rotate. When the gear shaft rotates due to the rotation of the mounting box 402, the rotating roller 405 rotates and wipes the outer wall of the gear shaft due to the sliding contact between its outer wall and the wiping cloth on the outer wall of the rotating roller 405. The outer wall of the rotating roller 405 is rotated by the friction of the gear shaft. When the 05 rotates, based on the function of half of it being inside the storage tank 404, the purified cooling water inside the storage tank 404 can wet the outer wall of the rotating roller 405, thereby causing the rotating roller 405 to rotate and wet and cool the outer wall of the gear shaft. Furthermore, based on the effect of the purifying agent and water mixing, the metallic odor generated after the heat treatment of the gear shaft can be purified and removed. Through this structure, the problem of the metal odor that may be released when the metal is heated after heat treatment and the coolant odor that may be released when it is cooled is solved. These odors spread into the surrounding environment and cause pollution. The odor generated when the gear shaft is cooled can be eliminated, thus improving the air quality of the surrounding environment.

[0040] Example 3

[0041] like Figure 1-6As shown, based on the above embodiment 2, an extrusion and dispensing mechanism is added to extrude the purifying agent into the interior of the rotating cooling mechanism. The extrusion and dispensing mechanism is located inside the tooling box 3. The extrusion and dispensing mechanism includes a rotating disk 6 that is rotatably connected to the inner wall of the rotating shaft 401 and is hollow. The rotating disk 6 is connected to the interior of the rotating shaft 401. An air inlet pipe 601 is connected to one side of the rotating disk 6. A storage chamber 602 is opened at the bottom of the interior of the supporting vertical plate 403. A third telescopic rod 603 is fixedly connected to the bottom of the inner wall of the storage chamber 602. An extrusion slide plate 604 is fixedly connected to the top of the third telescopic rod 603.

[0042] In a further detailed description of the present invention, the outer wall of the extrusion slide plate 604 and the inner wall of the storage cavity 602 are slidably fitted together. An air vent is provided on one side of the inner wall of the storage cavity 602 below the extrusion slide plate 604. An inlet is provided on one side of the top of the storage cavity 602, and a one-way valve that only allows outflow is provided inside the inlet. The storage cavity 602 and the interior of the storage tank 404 are connected through the inlet.

[0043] With the above technical solution, in specific use: the gear shaft is placed on the support plate 501. When pressed downwards, the gas squeezed downwards by the support plate 501 enters the rotating disk 6 through the rotating shaft 401, and then enters the storage chamber 602 through the air inlet pipe 601. Based on the action of the squeezed gas, the extrusion slide plate 604 slides upwards, allowing the purifying agent above the extrusion slide plate 604 to enter the storage tank 404 through the inlet. Through this structure, By separating the purifying agent from the cooling water, the sedimentation caused by prolonged mixing of the purifying agent and water is reduced. During the gear shaft installation process, the purifying agent automatically enters the water and mixes with it, improving its effectiveness. This also solves the problem of metal odor being released during heat treatment and coolant odor being released during cooling, which could pollute the surrounding environment. The purifying agent can eliminate the odor generated during gear shaft cooling, improving the air quality of the surrounding environment.

[0044] It should be noted that the squeezing force of the gear shaft installation is greater than the telescopic force of the third telescopic rod 603, which allows the squeezing plate 604 to squeeze the purifying agent out. The first telescopic rod 5, the second telescopic rod 502 and the third telescopic rod 603 are all existing technologies of telescopic reciprocating, and their working principles will not be described in detail.

[0045] Example 4

[0046] like Figure 1-6 As shown, based on the above embodiment three, an agitation mechanism is added to agitate the purified cooling water inside the rotating cooling mechanism. The agitation mechanism is located inside the rotating cooling mechanism and includes a rotating rod 7 rotatably connected to the storage tank 404. The top of the rotating rod 7 extends rotatably to the outside of the storage tank 404. A fixed plate 701 is fixedly connected to the top of the rotating rod 7, and a torsion spring 702 is fixedly connected to the bottom of the fixed plate 701. An agitation plate 703 is fixedly connected to the outer side of the rotating rod 7 inside the storage tank 404. A mounting magnetic block 704 is fixedly connected to one side of the agitation plate 703. A rotating magnetic block 705 is embedded in the outer wall of the rotating roller 405.

[0047] In a further detailed description of the present invention, the mounting magnetic block 704 and the rotating magnetic block 705 are arranged to attract each other with opposite poles, the stirring plate 703 is provided with a plurality of flow holes, and the end of the torsion spring 702 away from the fixed plate 701 is connected to the top of the outer wall of the storage tank 404, and the torsion spring 702 is sleeved on the outer wall of the rotating rod 7.

[0048] With the above technical solution, in practical use: when the rotating roller 405 rotates, it drives the rotating magnetic block 705 to rotate. When the rotating magnetic block 705 rotates to the position of the mounting magnetic block 704, based on the attraction between their opposite poles, the mounting magnetic block 704 can drive the stirring plate 703 to rotate. When the rotating magnetic block 705 disengages from the mounting magnetic block 704, the stirring plate 703 returns to its initial position under the action of the rotating rod 7 and the torsion spring 702. Through this structure, the stirring plate 703 can reciprocate when the rotating roller 405 wipes and cools the outer wall of the gear shaft. The oscillation mechanism agitates and flows the purified cooling water inside the storage tank 404. Combined with the multiple flow holes on its outer wall, this enhances the agitation effect of the stirring plate 703 on the purified cooling water inside the storage tank 404, improving the removal of metallic odors. This solves the problem that after heat treatment, the metal may release metallic odors when heated and coolant odors may be released when cooled, which could spread into the surrounding environment and cause pollution. It can eliminate the odors generated during gear shaft cooling, improving the air quality of the surrounding environment.

[0049] Although the illustrative specific embodiments of this application have been described above to enable those skilled in the art to understand this application, this application is not limited to the scope of the specific embodiments. For those skilled in the art, all applications utilizing the concept of this application are protected as long as various variations are within the spirit and scope of this application as defined and determined by the appended claims.

Claims

1. A special tooling for heat treatment of wind turbine yaw gear shaft, comprising a workbench (1), a plurality of support rods (2) mounted on the top of the workbench (1), and a plurality of tooling boxes (3) mounted on the support rods (2), characterized in that: It also includes: a clamping mechanism for automatically clamping and fixing the heat-treated gear shaft, the clamping mechanism being located inside the tooling box (3); a rotating cooling mechanism for cooling the outer wall of the heat-treated gear shaft, the rotating cooling mechanism being located inside the tooling box (3); an extrusion agent mechanism for extruding the purifying agent into the rotating cooling mechanism, the extrusion agent mechanism being located inside the tooling box (3); and a stirring mechanism for stirring the purified cooling water inside the rotating cooling mechanism, the stirring mechanism being located inside the rotating cooling mechanism. The extrusion mechanism includes a rotating disk (6) that is rotatably connected to the inner wall of the rotating shaft (401) and is hollow. The rotating disk (6) is connected to the interior of the rotating shaft (401). An air inlet pipe (601) is connected to one side of the rotating disk (6). A storage chamber (602) is opened at the bottom of the interior of the support vertical plate (403). A third telescopic rod (603) is fixedly connected to the bottom of the inner wall of the storage chamber (602). An extrusion slide plate (604) is fixedly connected to the top of the third telescopic rod (603). The outer wall of the extrusion slide plate (604) and the inner wall of the storage chamber (602) are slidably fitted together. An air vent is provided on one side of the inner wall of the storage chamber (602) below the extrusion slide plate (604). An inlet is provided on one side of the top of the storage chamber (602), and a one-way valve that only allows outflow is provided inside the inlet. The storage chamber (602) and the storage tank (404) are connected through the inlet.

2. The special tooling for heat treatment of wind turbine yaw gear shaft according to claim 1, characterized in that: The rotating cooling mechanism includes a servo motor (4) fixedly connected to the bottom of the outer wall of the tooling box (3). The output end of the servo motor (4) is fixedly connected to a rotating shaft (401), and the top of the rotating shaft (401) extends rotatably into the interior of the tooling box (3). The top of the rotating shaft (401) is fixedly connected to an installation box (402) inside the tooling box (3). Supporting vertical plates (403) are fixedly connected to both sides inside the tooling box (3). A storage tank (404) is fixedly connected to one side of the supporting vertical plate (403). A rotating roller (405) is rotatably connected to one side of the storage tank (404). A wiping cloth is provided on the outer wall of the rotating roller (405).

3. The special tooling for heat treatment of wind turbine yaw gear shaft according to claim 2, characterized in that: The bottom of the tooling box (3) is provided with a rotating groove, and the rotating shaft (401) extends into the interior of the tooling box (3) through the rotating groove. The two supporting vertical plates (403) are located on both sides of the mounting box (402) and are arranged symmetrically.

4. The special tooling for heat treatment of wind turbine yaw gear shaft according to claim 3, characterized in that: Half of the rotating roller (405) rotates inside the storage tank (404), which has a water injection hole.

5. A special tooling for heat treatment of wind turbine yaw gear shaft according to claim 4, characterized in that: The mounting clamping mechanism includes a first telescopic rod (5), a support plate (501) is fixedly connected to the top of the first telescopic rod (5), a second telescopic rod (502) is fixedly connected to both sides of the inner wall of the mounting box (402), and an arc-shaped clamping block (503) is fixedly connected to the end of the second telescopic rod (502) away from the mounting box (402).

6. A special tooling for heat treatment of wind turbine yaw gear shaft according to claim 5, characterized in that: The arc-shaped clamp (503) initially rests against the outer wall of the support plate (501), and the gear shaft that requires heat treatment is placed above the support plate (501).

7. A special tooling for heat treatment of wind turbine yaw gear shaft according to claim 6, characterized in that: The interior of the rotating shaft (401) is hollow, and air inlets are provided at the bottom of the first telescopic rod (5) and the mounting box (402) and at the top of the rotating shaft (401).

8. A special tooling for heat treatment of wind turbine yaw gear shaft according to claim 7, characterized in that: The first telescopic rod (5) is connected to the interior of the rotating shaft (401) through an air inlet, and the end of the arc-shaped clamp (503) away from the second telescopic rod (502) is clamped and fitted to the outer wall of the gear shaft to be processed.

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