A quenching and tempering integrated device for the production of wind power gear steel and its production process

Abstract

The present invention relates to the technical field of quenching and tempering, and in particular to a quenching and tempering integrated device for the production of wind power gear steel and its production process, including a base frame, a feeding module, a handling module, a heating furnace, a quenching tank, a tempering furnace, a gas transmission part and a storage and heat preservation module. The base frame includes a rail frame, and a frame is fixedly connected to the upper side of the rail frame. A guide rail is provided inside the frame. A feeding module is arranged at the left end of the rail frame. The feeding module includes a feeding part partially located inside the rail frame. The feeding part includes a bottom plate, and support rods are fixedly connected to the four corners of the upper side of the bottom plate. Support plates are fixedly connected to the upper sides of the left and right support rods. In the present invention, through structures such as the handling module and the feeding module, the quenching and tempering integrated device can automatically and efficiently hoist multiple wind power gear steel blanks at intervals, thereby improving the subsequent heat treatment efficiency and ensuring uniform heating of the steel blanks.

Description

Technical Field

[0001] The present invention relates to the technical field of quenching and tempering, and particularly to a quenching and tempering integrated device for the production of wind power gear steel and its production process. Background Art

[0002] Wind power gear steel is a key material used to manufacture gears for wind turbine generators. Its production process involves multiple steps, including raw material selection, smelting, forging, heat treatment, etc. Among them, the quenching and tempering processes of wind power gear steel are key steps in the heat treatment process, mainly used to improve the hardness, wear resistance and fatigue resistance of gear steel, while ensuring sufficient toughness and plasticity inside the material.

[0003] The existing quenching and tempering processes usually involve multiple independent devices, such as a heating furnace for quenching, a quenching tank, and a tempering furnace for tempering. These devices are scattered and have a low degree of integration. Such a layout requires workers to manually transfer workpieces from one device to another, with a cumbersome and inconvenient operation process. Especially for wind power gear steel with a large size and heavy weight, in order to improve the heat treatment efficiency and ensure uniform heating, theoretically, multiple gear steels should be hoisted at intervals and heat-treated simultaneously. However, due to their volume and weight limitations, it further increases the difficulty of hoisting and the complexity of operation. In addition, the wind power gear steel after tempering needs to be kept warm in the tempering furnace for several hours, which not only occupies the resources of the tempering furnace for a long time but also affects the overall production progress. Therefore, a quenching and tempering integrated device for the production of wind power gear steel and its production process are proposed according to the above problems. Summary of the Invention

[0004] The purpose of the present invention is to provide a quenching and tempering integrated device for the production of wind power gear steel and its production process, so as to solve the problem that it is difficult to achieve multiple and spaced hoisting when dealing with wind power gear steel with a large size and heavy weight by traditional manual hoisting operations, resulting in high operation difficulty and a cumbersome and inconvenient process.

[0005] To achieve the above purpose, the present invention provides the following technical solutions:

[0006] A quenching and tempering integrated device for the production of wind power gear steel and its production process, including a base frame, a feeding module, a handling module, a heating furnace, a quenching tank, a tempering furnace, a gas transmission part and a storage and heat preservation module. The base frame includes a rail frame, and a frame is fixedly connected to the upper side of the rail frame. A guide rail is arranged inside the frame. A feeding module is arranged at the left end of the rail frame. The feeding module includes a feeding part partially located inside the rail frame. The feeding part includes a bottom plate. Support rods are fixedly connected to the four corners of the upper side of the bottom plate. Side plates are fixedly connected to the upper sides of the left and right support rods. A pair of symmetrically arranged rotating rollers are rotatably connected between a group of side plates. A motor is fixedly connected to the left side of the left side plate. The end of the output shaft of the motor is fixedly connected to the rear rotating roller. Transmission belts are sleeved on the left and right outer sides of a group of rotating rollers. A material cylinder located behind the frame is fixedly connected to the upper side of a group of side plates. A discharge port is arranged at the lower front side of the material cylinder. A lifting part is installed on the upper side of the bottom plate. The lifting part includes a cylinder fixed on the upper side of the bottom plate. A baffle plate located between a group of transmission belts is fixedly connected to the upper side of the cylinder. Connecting plates are fixedly connected to each mounting port of the baffle plate. Support plates are fixedly connected to the rear sides of the connecting plates. Cuts are arranged inside the support plates. Contact buttons are installed at the counterbore positions of the support plates. A handling module located above the lifting part is installed on the upper side of the rail frame.

[0007] Preferably, the handling module includes a transfer frame, an electric push rod, a base column, a supporting part and a transmission part. The transfer frame is arranged on the steel rail at the top of the rail frame through electric rollers. An electric push rod is fixedly connected to the inner opening position of the upper side of the transfer frame. The lower driving rod of the electric push rod is fixedly connected to a base column. The base column includes a column shell. A middle channel is arranged inside the column shell. Through rails are arranged on the front and rear sides of the upper part of the middle channel. A plurality of groups of equally spaced block grooves are arranged on the outer curved surface of the lower part of the column shell. A group of block grooves has four in total and is arranged at equal angles. Through holes are communicated between the block grooves and the middle channel. The supporting part includes two rail rods slidably connected to the through rails. A base block located inside the middle channel is fixedly connected between a group of rail rods. A connecting rod is fixedly connected to the lower side of the base block. A supporting block is slidably connected in each block groove. Connecting ropes passing through the through holes are fixedly connected between the supporting blocks and the connecting rod. Springs located in the block grooves are sleeved on the outer sides of the connecting ropes. Linking blocks are fixedly connected to the ends of the rail rods far away from the base block. The transmission part includes a sleeve plate sleeved on the outer side of the column shell. Transverse tracks are arranged on both sides of the sleeve plate. Rail blocks are slidably connected to the inner sides of the tracks. Guide plates located above the sleeve plate are fixedly connected to the upper sides of the rail blocks. A pushing bar is fixedly connected to the facing surfaces of a group of guide plates. The heating furnace, the quenching tank and the tempering furnace are sequentially arranged horizontally on the right side of the lifting part.

[0008] Preferably, the upper inner side of the barrel is of a flared structure. The barrel is arranged above a set of conveyor belts. Limiting plates are fixedly connected to the upper sides of the side plates. Cushion plates are fixedly connected to the facing surfaces of the set of side plates. The upper end surfaces of the cushion plates are in contact with the upper inner walls of the conveyor belts.

[0009] Preferably, the distance between a set of the support plates is the same. The button bodies of the contact buttons are all higher than the upper end surfaces of the support plates. The notches all open towards the right. The notches are all arranged below the base columns. The inner diameter of the notches is larger than the diameter of the base columns.

[0010] Preferably, the spring is arranged between the outer end surface of the support block and the inner wall of the block groove. The sleeve plate is arranged below the linkage block. The inclined surface of the linkage block is in contact with the inclined surface of the guide plate. The push bar is of an arc-shaped bar structure. The push bar is arranged on the right side of the sleeve plate. The protruding part at the upper end of the transfer rack is slidably connected to the guide rail.

[0011] Preferably, a storage and heat preservation module is arranged below the rail of the rail rack on the right side of the tempering furnace. The storage and heat preservation module includes a shell part, a through pipe, a driving part, an inner partition part, a storage rack plate, a base cover and a cover lifting part. The shell part includes a storage shell. A rotating groove is opened on the lower side of the storage cavity of the storage shell. A pipeline is communicated with the lower side of the rotating groove. A belt channel is communicated with the right side of the rotating groove. A through pipe is fixedly connected to the inner side of the pipeline. The driving part includes a support plate fixed on the right side of the storage shell. A motor is fixedly connected to the upper side of the support plate. A synchronous pulley is fixedly connected to the end of the output shaft of the motor. A synchronous pulley is rotatably connected to the outer side of the vertical pipe of the through pipe in the rotating groove. A synchronous belt passing through the belt channel is sleeved on the outer sides of the set of synchronous pulleys. The inner partition part includes a seat plate fixedly connected to the left synchronous pulley. An air cavity communicated with the through pipe is opened on the inner side of the seat plate. A partition plate is fixedly connected to the upper side of the seat plate. A plurality of air inlet holes are opened on the upper side of the air cavity between the plates of the partition plate. Storage rack plates are fixedly connected between the plates of the partition plate. A base cover with a left opening is installed on the upper side of the partition plate. A cover lifting part is installed at the opening of the base cover. The cover lifting part includes a vertical frame fixedly connected to the inner wall at the opening corner of the base cover. A receiving groove with a left opening is opened on the inner side of the vertical frame. A flip cover rotatably connected to the vertical frame is arranged on the inner side of the receiving groove. The air delivery part includes a shunt pipe communicated with the heating furnace and the tempering furnace. The right end of the shunt pipe is communicated with an air extraction pump. The right side of the air extraction pump is communicated with an air delivery pipe. The rear side of the right end of the air delivery pipe is communicated with a flexible pipe.

[0012] Preferably, the inner partition part is arranged inside the storage cavity of the storage shell. The lower end surface of the seat plate is attached to the lower inner wall of the storage cavity of the storage shell. The outer curved surfaces of the seat plate and the partition plate are both attached to the inner curved surface of the storage shell. On both sides of the upper part of the storage shell, pin blocks are provided. On both sides of the upper part of the base cover, pin plates are provided. The pin blocks of the storage shell are inserted into the pin plates of the base cover. Inside the base cover, a plurality of exhaust holes are arranged at equal angles.

[0013] Preferably, the front end of the through pipe protrudes from the storage shell. The rear end of the flexible connecting pipe is sleeved outside the front end of the through pipe. The upper inner wall of the storage groove is fixedly connected with a damping pad. The lower end surface of the damping pad is attached to the upper curved surface of the flip cover. The size of the widest part of the flip cover is smaller than the size between a set of steel rails of the rail frame.

[0014] Preferably, the production process includes:

[0015] Step 1: Raw material preparation. First, select alloy structural steels with high strength, high toughness and high hardenability, such as carburizing steels and quenched and tempered steels. These materials need to have high purity, high tissue uniformity and good mechanical properties to meet the usage requirements of wind power gear steel under high load and complex working conditions.

[0016] Step 2: Smelting and casting. Use an electric arc furnace or a converter for preliminary smelting, then further purify through secondary refining outside the furnace, and finally remove gases and impurities through processes such as vacuum degassing or vacuum oxygen decarburization to ensure the purity of the molten steel and complete the smelting. Then pour the refined molten steel into an ingot or a continuous casting billet. During the process, it is necessary to strictly control the casting temperature and cooling rate to avoid internal defects and complete the casting.

[0017] Step 3: Forging and preliminary treatment. Forging is one of the key steps in the production of wind power gear steel. During the forging process, the ingot or continuous casting billet is heated to an appropriate temperature and then subjected to open die forging or die forging on forging equipment to improve the density and mechanical properties of the material and eliminate internal defects at the same time. The forged steel parts are subjected to preliminary machining on a machine tool to meet the dimensional and shape accuracy requirements of the wind power gear drawing, and a wind power gear steel blank is obtained to complete the preliminary treatment.

[0018] Step Four: Pre-operation before quenching and tempering. Through the external overhead conveyor equipment, the wind power gear billets are conveyed one by one to the barrel of the feeding module. The billets enter through the upper flared opening of the barrel and are stacked inside the barrel. The motor is started through the control box to drive the rear roller to run, so that the conveyor belt moves forward cyclically, pushing the billet at the bottom of the barrel through the discharge port. The two side limit plates provide guidance for the billet, making it move towards the baffle plate. When the billet contacts the baffle plate, it will squeeze the contact button on the upper support plate, indicating that the first billet is in place. At this time, the control box controls the baffle plate and the support plate to move up a set distance through the cylinder. The middle support plate moves up to replace the original position of the upper support plate. Repeat the above operation and wait for the next billet to be in place. When the billets on the upper, middle, and lower support plates are all in place, the control box stops the conveyor belt from running and no longer conveys new billets. At the same time, the cylinder further extends and pushes up, making each support plate move up, lifting each billet and moving it towards the handling module, so that the base column penetrates the lifted billets and support plates. During this period, each group of support blocks makes telescopic movements in each block groove and finally unfolds in the notch of each support plate to lift each billet. At this time, the control transfer frame moves to the right, driving the base column and the supporting part to move, so that each billet detaches from the support plate and moves to the right, completing the pre-hoisting operation before quenching and tempering. Through this operation, the quenching and tempering integrated equipment can automatically hoist multiple wind power gear billets at intervals, thereby improving the subsequent heat treatment efficiency and ensuring uniform heating of the billets;

[0019] Step Five: Quenching operation. Through the handling module, each wind power gear billet is transported above the heating furnace. Subsequently, the control box drives the electric push rod to extend, pushing the base column and the supporting part downward to move, so that the wind power gear billet enters the heating furnace along with the base column and the supporting part. In the heating furnace, the billet is heated to above the critical temperature Ac3 or Ac1. After the heating is completed, the billet is immediately transported into the quenching tank through the handling module, and the quenching liquid in the quenching tank is used to quickly cool the billet to complete the quenching process. The quenched billet will obtain high hardness and strength, but has large internal stress, so subsequent tempering treatment is required;

[0020] Step Six: Tempering and temperature recovery operation. Each quenched wind power gear billet is transported into the tempering furnace through the handling module for high-temperature tempering, so that the quenched billet is reheated to an appropriate temperature below the lower critical temperature Ac1. During the tempering process, the martensite decomposes and the retained austenite decreases, reducing the hardness and increasing the toughness, completing the tempering and temperature recovery operation;

[0021] Step Seven: Tempering and heat preservation operation. Through the handling module, the wind power gear billets to be heat-preserved are transported above the opening of the base cover. Subsequently, control the electric push rod to extend, pushing the base column and the supporting part downward, so that the billets pass through the base cover and enter the storage shell, and ensure that each billet is higher than each storage plate of the storage rack plate. At this time, control the transfer rack to move to the right, driving the electric push rod, the base column, the supporting part and the transmission part to move to the right as a whole. The rightward movement of the base column and the supporting part transports each billet above each storage plate of the storage rack plate, enabling the storage rack plate to support each billet; while the rightward movement of the transmission part causes the push bar to be squeezed by the cover-lifting part, driving the guide plate to move to the left, and further causing the linkage block, the rail rod, the base block and the linkage rod to move upward in sequence. The upward movement of the linkage rod drives each group of supporting blocks to contract back into the block grooves through the connecting rope, so that each group of supporting blocks no longer support the billets, and the handling module completes the hoisting task. At this time, control the electric push rod to contract, driving the base column to move upward and separate from the billets. Subsequently, the driving part drives the inner partition part to rotate 60 degrees, displacing other idle storage rack plates to the opening of the base cover to prepare to receive the next group of billets for heat preservation storage; when there are no idle storage rack plates, it indicates that the storage and heat preservation module has reached the maximum storage capacity. At this time, the storage and heat preservation module will no longer receive new billets. Then the staff can rotate the flip cover to close the opening of the base cover for heat preservation use; to ensure that the temperature in the storage shell is suitable for heat preservation, the control box will regularly start the air extraction pump, and through the shunt pipe, the gas transmission pipe, the flexible connection pipe and the through pipe, transport the high-temperature gas in the heating furnace and the tempering furnace to the air cavity, then send it into the storage shell through the air inlet hole, and finally discharge it from the exhaust hole of the base cover. This process can keep the wind power gear billets in the storage shell heat-preserved for a long time, completing the tempering and heat preservation operation;

[0022] Step Eight: Tempering and air cooling operation. For the wind power gear billets that have been heat-preserved for a long time, after the heat preservation is completed, the flexible connection pipe can be separated from the through pipe, and the whole storage and heat preservation module can be moved out of the track frame to the right. Subsequently, remove the base cover to completely open the storage shell, exposing the wind power gear billets stored inside. At this time, the billets are placed in the air for natural cooling. This process helps to stabilize the organizational structure of the steel and effectively eliminate internal stress, completing the air cooling operation and also completing the entire tempering operation;

[0023] Step Nine: Post-treatment operation. Grind and finish the wind power gear billets after quenching and tempering to improve the tooth profile accuracy and surface finish, and then conduct hardness testing, dimensional testing, surface quality testing and metallographic testing to ensure that they meet the design requirements, thus completing the production of the wind power gear steel.

[0024] Compared with the prior art, the beneficial effects of the present invention are:

[0025] 1. In the present invention, through structures such as the handling module and the feeding module, the feeding part of the feeding module can sequentially convey the stacked wind power gear billets in the cartridge to the lifting part. The lifting part can stack the conveyed wind power gear billets at intervals, and then push the stacked wind power gear billets upward to the handling module. The base column and the supporting part of the handling module can perform spaced hoisting on the stacked wind power gear billets, realizing that the quenching and tempering integrated equipment can automatically and efficiently perform spaced hoisting on multiple wind power gear billets, thereby improving the subsequent heat treatment efficiency and ensuring uniform heating of the billets. This solves the problem that in traditional manual hoisting operations, when dealing with wind power gears with large sizes and heavy weights, it is difficult to perform multiple and spaced hoisting, resulting in high operation difficulty and cumbersome and inconvenient processes.

[0026] 2. In the present invention, through structures such as the storage and insulation module, the air delivery part, the heating furnace, and the tempering furnace, the handling module can transport the wind power gear billets to be insulated into the storage and insulation module for storage. The air delivery part can regularly convey the high-temperature air flow in the heating furnace and the tempering furnace into the storage and insulation module, so that the temperature in the storage and insulation module always remains suitable for the insulation of the wind power gear billets. Through the large storage capacity and insulation ability of the storage and insulation module, it is possible to avoid the wind power gear billets occupying the resources of the tempering furnace for a long time, ensuring the overall production progress of the wind power gear billets. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 is the overall structural schematic diagram of the present invention;

[0028] Figure 2 of the present invention Figure 1 is the structural schematic diagram from another perspective;

[0029] Figure 3 is the structural schematic diagram of the base frame of the present invention;

[0030] Figure 4 is the structural schematic diagram of the feeding module of the present invention;

[0031] Figure 5 of the present invention Figure 4 is the sectional structural schematic diagram;

[0032] Figure 6 is the structural schematic diagram of the feeding part of the present invention;

[0033] Figure 7 is the structural schematic diagram of the lifting part of the present invention;

[0034] Figure 8 of the present invention Figure 7 is the disassembled structural schematic diagram;

[0035] Figure 9Schematic structural diagram of the handling module of the present invention;

[0036] Figure 10 Schematic cross-sectional structural diagram at the base column of the present invention;

[0037] Figure 11 For the present invention Figure 10 Schematic structural diagram of location A;

[0038] Figure 12 Schematic cross-sectional structural diagram of the base column of the present invention;

[0039] Figure 13 Schematic structural diagram of the transmission part of the present invention;

[0040] Figure 14 Schematic structural diagram of the gas transmission part of the present invention;

[0041] Figure 15 Schematic structural diagram of the storage and insulation module of the present invention;

[0042] Figure 16 For the present invention Figure 15 Schematic cross-sectional structural diagram;

[0043] Figure 17 For the present invention Figure 16 Schematic bottom view structural diagram;

[0044] Figure 18 Schematic cross-sectional structural diagram of the shell part of the present invention;

[0045] Figure 19 Schematic cross-sectional structural diagram at the inner partition part of the present invention;

[0046] Figure 20 Schematic structural diagram at the through pipe of the present invention;

[0047] Figure 21 Schematic structural diagram of the storage rack board of the present invention;

[0048] Figure 22 Schematic separation structural diagram of the base cover and the lifting cover part of the present invention;

[0049] Figure 23 Schematic separation structural diagram of the lifting cover part of the present invention.

[0050] In the figure: 1. Base frame; 11. Rail frame; 12. Frame; 13. Guide rail; 2. Loading module; 21. Feeding part; 211. Bottom plate; 212. Bracing rod; 213. Side plate; 214. Rotating roller; 215. Motor; 216. Transmission belt; 217. Cushion plate; 22. Barrel; 23. Discharge port; 24. Limit plate; 25. Lifting part; 251. Cylinder; 252. Block back plate; 253. Connecting plate; 254. Support plate; 255. Notch; 256. Contact button; 3. Handling module; 31. Transfer frame; 32. Electric push rod; 33. Base column; 331. Column shell; 332. Middle channel; 333. Through rail; 334. Block groove; 335. Through hole; 34. Supporting part; 341. Rail rod; 342. Base block; 343. Linking rod; 344. Connecting rope; 345. Supporting block; 346. Spring; 347. Linking block; 35. Transmission part; 351. Sleeve plate; 352. Track; 353. Rail block; 354. Guide plate; 355. Pushing bar; 4. Heating furnace; 5. Quenching tank; 6. Tempering furnace; 7. Gas transmission part; 71. Shunt pipe; 72. Air extraction pump; 73. Gas transmission pipe; 74. Flexible pipe; 8. Storage and heat preservation module; 81. Shell part; 811. Storage shell; 812. Rotating groove; 813. Pipeline; 814. Belt channel; 82. Through pipe; 83. Driving part; 831. Supporting plate; 832. Motor; 833. Synchronous pulley; 834. Synchronous belt; 84. Inner partition part; 841. Seat plate; 842. Air cavity; 843. Air inlet hole; 844. Partition plate; 85. Storage rack plate; 86. Base cover; 87. Lid lifting part; 871. Vertical frame; 872. Storage groove; 873. Flip cover; 874. Damping pad. Detailed implementation mode

[0051] Please refer to Figure 1-23 , the present invention provides a technical solution:

[0052] A quenching and tempering integrated device for the production of wind power gear steel and its production process, including a base frame 1, a feeding module 2, a handling module 3, a heating furnace 4, a quenching tank 5, a tempering furnace 6, a gas transmission part 7 and a storage and heat preservation module 8. The base frame 1 includes a rail frame 11. The upper side of the rail frame 11 is fixedly connected with a frame 12. A guide rail 13 is arranged inside the frame 12. The feeding module 2 is arranged at the left end of the rail frame 11. The feeding module 2 includes a feeding part 21 partially inside the rail frame 11. The feeding part 21 includes a bottom plate 211. Four corners of the upper side of the bottom plate 211 are fixedly connected with support rods 212. The upper sides of the left and right support rods 212 are fixedly connected with side plates 213. A pair of symmetrically arranged rotating rollers 214 are rotatably connected between a group of side plates 213. The left side of the left side plate 213 is fixedly connected with a motor 215. The end of the output shaft of the motor 215 is fixedly connected with the rear rotating roller 214. Transmission belts 216 are sleeved on the left and right sides of the outside of a group of rotating rollers 214. The upper sides of a group of side plates 213 are fixedly connected with a material cylinder 22 located at the rear of the frame 12. A discharge port 23 is arranged at the lower front side of the material cylinder 22. A lifting part 25 is installed on the upper side of the bottom plate 211. The lifting part 25 includes a cylinder 251 fixed on the upper side of the bottom plate 211. The upper side of the cylinder 251 is fixedly connected with a baffle plate 252 located between a group of transmission belts 216. Connecting plates 253 are fixedly connected in each mounting port of the baffle plate 252. Support plates 254 are fixedly connected to the rear sides of the connecting plates 253. Notches 255 are arranged inside the support plates 254. Contact buttons 256 are installed at the counterbores of the support plates 254. A handling module 3 is installed on the upper side of the rail frame 11 and above the lifting part 25;The handling module 3 includes a transfer rack 31, an electric push rod 32, a base column 33, a supporting part 34 and a transmission part 35. The transfer rack 31 is arranged on the steel rail at the top of the rail rack 11 through electric rollers. An electric push rod 32 is fixedly connected inside the upper side opening of the transfer rack 31. The lower driving rod of the electric push rod 32 is fixedly connected with a base column 33. The base column 33 includes a column shell 331. A middle channel 332 is opened inside the column shell 331. Through channels 333 are opened on the front and rear sides of the upper part of the middle channel 332. A plurality of groups of block grooves 334 arranged at equal intervals are opened on the outer curved surface of the lower part of the column shell 331. One group of block grooves 334 has four in total and is arranged at equal angles. Through holes 335 are communicated between the block grooves 334 and the middle channel 332. The supporting part 34 includes two rail rods 341 slidably connected with the through channels 333. A base block 342 located inside the middle channel 332 is fixedly connected between one group of rail rods 341. A linkage rod 343 is fixedly connected to the lower side of the base block 342. Support blocks 345 are slidably connected inside the block grooves 334. Connecting ropes 344 passing through the through holes 335 are fixedly connected between the support blocks 345 and the linkage rod 343. Springs 346 located inside the block grooves 334 are sleeved on the outer sides of the connecting ropes 344. Linkage blocks 347 are fixedly connected to the ends of the rail rods 341 far away from the base block 342. The transmission part 35 includes a sleeve plate 351 sleeved on the outer side of the column shell 331. Transverse tracks 352 are opened on both sides of the sleeve plate 351. Rail blocks 353 are slidably connected inside the tracks 352. Guide plates 354 located above the sleeve plate 351 are fixedly connected to the upper sides of the rail blocks 353. A push bar 355 is fixedly connected to the facing surfaces of one group of guide plates 354. On the right side of the lifting part 25, a heating furnace 4, a quenching tank 5 and a tempering furnace 6 are arranged in sequence horizontally; the inner upper side of the material cylinder 22 is of a flared structure. Through this setting, it is convenient for the wind power gear steel billets to enter the material cylinder 22 one by one for stacking. The material cylinder 22 is arranged above one group of conveyor belts 216. Through this setting, the lowermost wind power gear steel billet in the material cylinder 22 can be displaced by the conveyor belt 216. Limit plates 24 are fixedly connected to the upper sides of the side plates 213. Through this setting, the forward-moving wind power gear steel billets can be limited and guided, avoiding the deviation of the wind power gear steel billets during the forward movement. Support plates 217 are fixedly connected to the facing surfaces of one group of side plates 213. The upper end surfaces of the support plates 217 are in contact with the upper inner wall of the conveyor belt 216. Through this setting, the conveyor belt 216 can be supported, avoiding the deformation and downward movement of the conveyor belt 216 caused by the weight of the wind power gear steel billets;The spacing between a group of support plates 254 is the same, and the button bodies of the contact buttons 256 are all higher than the upper end surfaces of the support plates 254. Through this arrangement, the wind turbine gear billet that moves up to the upper side of the support plate 254 will squeeze the contact button 256, indicating that the wind turbine gear billet is in place. The notches 255 are all set to open to the right. The notches 255 are all set on the lower side of the base column 33. Through this arrangement, the base column 33 can pass through the support plate 254 and can be displaced to the right and moved out of the support plate 254. The inner diameter of the notch 255 is larger than the diameter of the base column 33. Through this arrangement, each group of support blocks 345 can be expanded in the notch 255, so that the support blocks 345 can extend from the block groove 334; the spring 346 is set Between the outer end surface of the support block 345 and the inner wall of the block groove 334, the spring 346 can reset the support block 345 completely retracted into the block groove 334 through this arrangement, the sleeve plate 351 is arranged on the lower side of the linkage block 347, and the inclined surface of the linkage block 347 fits the inclined surface of the guide plate 354. Through this arrangement, the displacement of the guide plate 354 can be transmitted to the linkage block 347. The push bar 355 is an arc-shaped bar structure, and the push bar 355 is arranged on the right side of the sleeve plate 351. Through this arrangement, the pressing of the push bar 355 by the cover part 87 is not affected by the interference of the sleeve plate 351. The upper end protrusion of the transfer frame 31 is slidably connected with the guide rail 13, and the stability of the transfer frame 31 during movement is improved through this arrangement. ;

[0053] like Figure 1 , Figures 14-23As shown in the figure, a storage and heat preservation module 8 is provided on the right side of the tempering furnace 6 under the steel rail of the rail rack 11. The storage and heat preservation module 8 includes a shell part 81, a through pipe 82, a driving part 83, an inner partition part 84, a storage rack plate 85, a base cover 86 and a cover lifting part 87. The shell part 81 includes a storage shell 811. A rotating groove 812 is opened on the lower side of the storage cavity of the storage shell 811. A pipeline 813 is communicated with the lower side of the rotating groove 812. A belt passage 814 is communicated with the right side of the rotating groove 812. The through pipe 82 is fixedly connected to the inner side of the pipeline 813. The driving part 83 includes a support plate 831 fixed on the right side of the storage shell 811. A motor 832 is fixedly connected to the upper side of the support plate 831. A synchronous pulley 833 is fixedly connected to the end of the output shaft of the motor 832. The synchronous pulley 833 is rotatably connected to the outer side of the vertical pipe of the through pipe 82 and is located in the rotating groove 812. A synchronous belt 834 is sleeved on the outer side of a group of synchronous pulleys 833 and passes through the belt passage 814. The inner partition part 84 includes a seat plate 841 fixedly connected to the left synchronous pulley 833. An air cavity 842 communicated with the through pipe 82 is opened on the inner side of the seat plate 841. A partition plate 844 is fixedly connected to the upper side of the seat plate 841. A plurality of air inlet holes 843 are opened on the upper side of the air cavity 842 and are located between the respective plates of the partition plate 844. The storage rack plates 85 are fixedly connected between the respective plates of the partition plate 844. A base cover 86 with a left opening is installed on the upper side of the partition plate 844. A cover lifting part 87 is installed at the opening of the base cover 86. The cover lifting part 87 includes a vertical frame 871 fixedly connected to the inner wall at the opening angle of the base cover 86. A receiving groove 872 with a left opening is opened on the inner side of the vertical frame 871. A flip cover 873 rotatably connected to the vertical frame 871 is arranged on the inner side of the receiving groove 872. The air delivery part 7 includes a flow dividing pipe 71 communicated with the heating furnace 4 and the tempering furnace 6. The right end of the flow dividing pipe 71 is communicated with an air extraction pump 72. The right side of the air extraction pump 72 is communicated with an air delivery pipe 73. The right rear side of the air delivery pipe 73 is communicated with a flexible pipe 74. Through this setting, the handling module 3 can carry the wind power gear steel billet to be heat-preserved into the storage and heat preservation module 8 for storage, and the air delivery part 7 can regularly deliver the high-temperature air flow in the heating furnace 4 and the tempering furnace 6 into the storage and heat preservation module 8, so that the temperature in the storage and heat preservation module 8 always remains suitable for the heat preservation of the wind power gear steel billet. Through the large storage capacity and heat preservation ability of the storage and heat preservation module 8, the wind power gear steel billet is prevented from occupying the resources of the tempering furnace 6 for a long time, ensuring the overall production progress of the wind power gear;The inner partition 84 is arranged inside the storage cavity of the storage shell 811. The lower end surface of the seat plate 841 is attached to the lower inner wall of the storage cavity of the storage shell 811. Through this arrangement, the stability of the inner partition 84 during rotation is improved. The outer curved surfaces of the seat plate 841 and the partition plate 844 are both attached to the inner curved surface of the storage shell 811. Through this arrangement, the storage cavity of the storage shell 811 can be partitioned to prevent the heat from quickly dissipating from the opening of the base cover 86. Pin blocks are arranged on both sides of the upper part of the storage shell 811, and pin plates are arranged on both sides of the upper part of the base cover 86. The pin blocks of the storage shell 811 are inserted into the pin plates of the base cover 86. Through this arrangement, the opening position of the base cover 86 can be positioned. A plurality of exhaust holes arranged at equal angles are provided inside the base cover 86. Through this arrangement, the base cover 86 can slowly discharge the gas in the storage cavity of the storage shell 811. The front end of the through pipe 82 protrudes from the storage shell 811, and the rear end of the flexible pipe 74 is sleeved outside the front end of the through pipe 82. Through this arrangement, it is convenient to connect and separate the flexible pipe 74 and the through pipe 82. The upper inner wall of the storage groove 872 is fixedly connected with a damping pad 874, and the lower end surface of the damping pad 874 is attached to the upper curved surface of the flip cover 873. Through this arrangement, the flip cover 873 can be positioned. The width of the widest part of the flip cover 873 is smaller than the dimension between a set of steel rails of the rail frame 11. Through this arrangement, the rotation of the flip cover 873 is not interfered by the steel rails of the rail frame 11.;

[0054] Workflow: The production process of wind turbine gear steel is as follows. Note 1: The electrical appliances in this scheme are all powered by external power, electrically connected to the external control box, and electrically controlled by the external control box; Note 2: The steel billets mentioned below refer to wind turbine gear steel billets; Raw material preparation: First, high-strength, high-toughness and high-hardenability alloy structural steels, such as carburizing steel and quenched and tempered steel, are selected. These materials need to have high purity, high organizational uniformity and good mechanical properties to meet the use requirements of wind turbine gear steel under high load and complex working conditions; Smelting and casting: Use electric arc furnace or converter for preliminary smelting, and then further purify through refining outside the furnace, and finally remove gases and impurities through vacuum degassing or vacuum oxygen decarburization to ensure the purity of the molten steel and complete the smelting; Then, The refined molten steel is cast into ingots or continuous casting billets. During the process, the casting temperature and cooling rate need to be strictly controlled to avoid internal defects and complete the casting; forging and preliminary treatment, forging is one of the key steps in the production of wind turbine gear steel. During the forging process, the ingots or continuous casting billets are heated to an appropriate temperature and then free forged or die forged on the forging equipment to improve the density and mechanical properties of the material and eliminate internal defects; the forged steel parts are preliminarily machined by machine tools to meet the size and shape accuracy required by the wind turbine gear drawings to obtain wind turbine gear billets and complete preliminary treatment; the pre-operation before quenching and tempering, through the external overhead conveyor belt equipment, the wind turbine gear billets are transported one by one to the barrel 22 of the feeding module 2, and the billets pass through the barrel The upper expansion opening of 22 enters and is stacked in the barrel 22, and the motor 215 is started by the control box to drive the rear roller 214 to rotate, and the conveyor belt 216 is driven to move forward in a cycle, pushing the billet at the bottom of the barrel 22 through the discharge port 23. The limit plates 24 on both sides provide guidance for the billet to move toward the back plate 252. When the billet contacts the back plate 252, the contact button 256 on the upper side support plate 254 is squeezed, indicating that the first billet is in place. At this time, the control box controls the back plate 252 and the support plate 254 to move up a set distance through the cylinder 251, and the middle side support plate 254 moves up to replace the original position of the upper side support plate 254. The above operation is repeated, waiting for the next billet to be in place. When the billets on the upper, middle and lower side support plates 254 are all in place, the control box is turned on. The box making stops the conveyor belt 216 from running, and no new steel billets are conveyed. At the same time, the cylinder 251 is further extended and pushed upward, so that each support plate 254 moves upward, and each steel billet is lifted and moved toward the handling module 3, so that the base column 33 passes through the upwardly moved steel billet and the support plate 254. During this period, each group of support blocks 345 performs telescopic movement in each block groove 334, and finally unfolds in the notch 255 of each support plate 254 to lift each steel billet. At this time, the transfer frame 31 is controlled to move right, driving the base column 33 and the supporting part 34 to move, so that each steel billet is separated from the support plate 254 and moves to the right, completing the pre-hoisting operation before quenching and tempering. Through this operation, the quenching and tempering integrated equipment can automatically hoist multiple wind power gear steel billets at intervals, thereby improving the subsequent heat treatment efficiency and ensuring that the steel billets are heated evenly.In the quenching operation, each wind turbine gear steel billet is transported to the top of the heating furnace 4 through the transport module 3. Then, the control box drives the electric push rod 32 to extend, and pushes the base column 33 and the supporting part 34 downward, so that the wind turbine gear steel billet enters the heating furnace 4 with the base column 33 and the supporting part 34. In the heating furnace 4, the steel billet is heated to a critical temperature Ac3 or above Ac1. After the heating is completed, the steel billet is immediately transported to the quenching box 5 through the transport module 3. The quenching liquid in the quenching box 5 is used to quickly cool the steel billet to complete the quenching process. The quenched steel billet will obtain high hardness and high strength, but the internal stress is large, so subsequent tempering treatment is required; tempering and temperature return Operation, through the transport module 3, each wind turbine gear steel billet that has been quenched is transported to the tempering furnace 6 for high-temperature tempering, so that the quenched steel billet is reheated to an appropriate temperature lower than the lower critical temperature Ac1. During the tempering process, martensite decomposes and residual austenite decreases, so that the hardness is reduced and the toughness is improved, and the tempering and temperature recovery operation is completed; tempering and heat preservation operation, through the transport module 3, the wind turbine gear steel billet to be insulated is transported to the top of the opening of the base cover 86, and then the electric push rod 32 is controlled to extend, pushing the base column 33 and the supporting part 34 to move downward, so that the steel billet passes through the base cover 86 and enters the storage shell 811, and ensures that each steel billet is higher than each storage plate of the storage shelf plate 85 (each The extension of the electric push rod 32 is a fixed amount to ensure the position of the steel billet). At this time, the transfer rack 31 is controlled to move rightward, driving the electric push rod 32, the base column 33, the supporting part 34 and the transmission part 35 to move rightward as a whole. The rightward movement of the base column 33 and the supporting part 34 transports each steel billet to the top of each storage plate of the storage shelf plate 85, so that the storage shelf plate 85 supports each steel billet; and the rightward movement of the transmission part 35 causes the push bar 355 to be squeezed by the cover part 87, driving the guide plate 354 to move leftward, and then the linkage block 347, the rail rod 341, the base block 342 and the linkage rod 343 move up in sequence, and the upward movement of the linkage rod 343 drives each group of support blocks 345 through the connecting rope 344 The support blocks 345 are retracted back into the block slots 334, so that each group of support blocks 345 no longer supports the steel billet, and the handling module 3 completes the lifting task. At this time, the electric push rod 32 is controlled to retract, driving the base column 33 to move upward and separate from the steel billet. Subsequently, the driving unit 83 drives the inner partition 84 to rotate 60 degrees, and moves the other idle shelf plates 85 to the opening of the base cover 86, ready to receive the next group of steel billets for heat preservation storage; when there are no idle shelf plates 85 (manual confirmation), it indicates that the storage and insulation module 8 has reached the maximum storage capacity. At this time, the storage and insulation module 8 will no longer receive new steel billets. At this time, the staff can rotate the flip cover 873 to close the opening of the base cover 86 for heat preservation;To ensure proper temperature insulation inside the storage shell 811, the control box regularly activates the air extraction pump 72. Through the shunt pipe 71, the gas transmission pipe 73, the flexible connection pipe 74, and the through pipe 82, the high-temperature gas inside the heating furnace 4 and the tempering furnace 6 is transported into the air cavity 842, then sent into the storage shell 811 through the air inlet hole 843, and finally discharged from the exhaust hole of the base cover 86. This process enables the wind power gear steel billet inside the storage shell 811 to be insulated for a long time, completing the tempering insulation operation; for the tempering air cooling operation, after the wind power gear steel billet has been insulated for a long time, the flexible connection pipe 74 can be separated from the through pipe 82 after the insulation is completed, and the entire storage insulation module 8 can be moved to the right out of the rail frame 11. Subsequently, the base cover 86 is removed to completely open the storage shell 811, exposing the wind power gear steel billet stored inside. At this time, the steel billet is placed in the air for natural cooling. This process helps to stabilize the organizational structure of the steel and effectively eliminates internal stress, completing the air cooling operation and also completing the entire tempering operation; for the post-treatment operation, the quenched and tempered wind power gear steel billet is subjected to precision gear grinding to improve the tooth profile accuracy and surface finish, and then hardness testing, dimensional testing, surface quality testing, and metallographic testing are carried out to ensure that it meets the design requirements, thus completing the production of the wind power gear.

[0055] In this article, specific examples are used to elaborate on the principles and implementation methods of the present invention. The descriptions of the above examples are only used to help understand the method of the present invention and its core idea. The above is only the preferred implementation method of the present invention. It should be noted that due to the limited nature of written expression and the objectively infinite specific structures, for those of ordinary skill in the art in this technical field, without departing from the principles of the present invention, several improvements, refinements, or changes can be made, or the above technical features can be combined in an appropriate manner; these improvements, refinements, changes, or combinations, or directly applying the concept and technical solution of the invention to other occasions without improvement, should all be regarded as the protection scope of the present invention.

Claims

1. An integrated quenching and tempering equipment for the production of wind power gear steel, comprising a base frame (1), a feeding module (2), a handling module (3), a heating furnace (4), a quenching tank (5), a tempering furnace (6), an air delivery part (7) and a storage and heat preservation module (8), characterized in that: The base frame (1) includes a rail frame (11). A frame (12) is fixedly connected to the upper side of the rail frame (11). A guide rail (13) is provided inside the frame (12). A feeding module (2) is arranged at the left end of the rail frame (11). The feeding module (2) includes a feeding part (21) partially located inside the rail frame (11). The feeding part (21) includes a bottom plate (211). Support rods (212) are fixedly connected to the four corners of the upper side of the bottom plate (211). Side plates (213) are fixedly connected to the upper sides of the left and right support rods (212). Symmetrically arranged rotating rollers (214) are rotatably connected between a group of side plates (213). A motor (215) is fixedly connected to the left side of the left side plate (213). The end of the output shaft of the motor (215) is fixedly connected to the rear rotating roller (214). Transmission belts (216) are sleeved on the left and right outer sides of a group of rotating rollers (214). A material cylinder (22) located behind the frame (12) is fixedly connected to the upper side of a group of side plates (213). A discharge port (23) is provided at the lower front side of the material cylinder (22). A lifting part (25) is installed on the upper side of the bottom plate (211). The lifting part (25) includes a cylinder (251) fixed to the upper side of the bottom plate (211). A baffle plate (252) located between a group of transmission belts (216) is fixedly connected to the upper side of the cylinder (251). Connecting plates (253) are fixedly connected to the respective mounting ports of the baffle plate (252). Support plates (254) are fixedly connected to the rear sides of the connecting plates (253). Notches (255) are provided inside the support plates (254). Contact buttons (256) are installed at the counterbored holes of the support plates (254). A handling module (3) located above the lifting part (25) is installed on the upper side of the rail frame (11). The handling module (3) includes a transfer frame (31), an electric push rod (32), a base column (33), a supporting part (34), and a transmission part (35). The transfer frame (31) is arranged on the rail on the top of the rail frame (11) through electric rollers. An electric push rod (32) is fixedly connected to the upper side opening of the transfer frame (31). The lower driving rod of the electric push rod (32) is fixedly connected to a base column (33). The base column (33) includes a column shell (331). A middle channel (332) is provided inside the column shell (331). Through rails (333) are provided on the upper front and rear sides of the middle channel (332). A plurality of groups of equally spaced block grooves (334) are provided on the outer curved surface of the lower part of the column shell (331). A group of block grooves (334) are arranged in four and are equally angled. Through holes (335) communicate between the block grooves (334) and the middle channel (332). The supporting part (34) includes two rail rods (341) slidably connected to the through rails (333). A base block (342) located inside the middle channel (332) is fixedly connected between a group of rail rods (341).A linkage rod (343) is fixedly connected to the lower side of the base block (342). A supporting block (345) is slidably connected in each of the block grooves (334). A connecting rope (344) passing through the through hole (335) is fixedly connected between the supporting block (345) and the linkage rod (343). Springs (346) located in the block grooves (334) are sleeved on the outer sides of the connecting ropes (344). Linkage blocks (347) are fixedly connected to one ends of the rail rods (341) far away from the base block (342). The transmission part (35) includes a sleeve plate (351) sleeved on the outer side of the column shell (331). Transverse tracks (352) are formed on both sides of the sleeve plate (351). Rail blocks (353) are slidably connected to the inner sides of the tracks (352). Guide plates (354) located above the sleeve plate (351) are fixedly connected to the upper sides of the rail blocks (353). A push bar (355) is fixedly connected to the facing surfaces of a group of the guide plates (354). On the right side of the lifting part (25), a heating furnace (4), a quenching tank (5) and a tempering furnace (6) are arranged horizontally in sequence. A storage and heat preservation module (8) is arranged under the steel rail of the rail frame (11) on the right side of the tempering furnace (6). The storage and heat preservation module (8) includes a shell part (81), a through pipe (82), a driving part (83), an inner partition part (84), a storage rack plate (85), a base cover (86) and a cover lifting part (87). The shell part (81) includes a storage shell (811). A rotating groove (812) is formed in the lower side of the storage cavity of the storage shell (811). A pipe (813) communicates with the lower side of the rotating groove (812). A belt passage (814) communicates with the right side of the rotating groove (812). A through pipe (82) is fixedly connected to the inner side of the pipe (813). The driving part (83) includes a support plate (831) fixed to the right side of the storage shell (811). A motor (832) is fixedly connected to the upper side of the support plate (831). A synchronous pulley (833) is fixedly connected to the end of the output shaft of the motor (832). A synchronous pulley (833) located in the rotating groove (812) is rotatably connected to the outer side of the vertical pipe of the through pipe (82). A synchronous belt (834) passing through the belt passage (814) is sleeved on the outer sides of a group of the synchronous pulleys (833). The inner partition part (84) includes a seat plate (841) fixedly connected to the left synchronous pulley (833). An air cavity (842) communicating with the through pipe (82) is formed in the inner side of the seat plate (841). A partition plate (844) is fixedly connected to the upper side of the seat plate (841). A plurality of air inlet holes (843) located between the plates of the partition plate (844) are formed in the upper side of the air cavity (842). Storage rack plates (85) are fixedly connected between the plates of the partition plate (844). A base cover (86) with a left opening is installed on the upper side of the partition plate (844). A cover lifting part (87) is installed at the opening of the base cover (86). The cover lifting part (87) includes a vertical frame (871) fixedly connected to the inner wall of the opening corner of the base cover (86).A storage groove (872) with a left opening is formed inside the vertical frame (871). A flip cover (873) rotatably connected to the vertical frame (871) is arranged inside the storage groove (872). The air delivery part (7) includes a shunt pipe (71) communicated with the heating furnace (4) and the tempering furnace (6). The right end of the shunt pipe (71) is communicated with an air extraction pump (72). The right side of the air extraction pump (72) is communicated with an air delivery pipe (73). The rear side of the right end of the air delivery pipe (73) is communicated with a flexible pipe (74).

2. The quenching and tempering integrated equipment for the production of wind power gear steel according to claim 1, characterized in that: The inner upper side of the barrel (22) is a flared structure. The barrel (22) is arranged above a set of conveyor belts (216). Limit plates (24) are fixedly connected to the upper sides of the side plates (213). Cushion plates (217) are fixedly connected to the facing surfaces of the set of side plates (213). The upper end surfaces of the cushion plates (217) are in contact with the upper inner walls of the conveyor belts (216).

3. The quenching and tempering integrated equipment for the production of wind power gear steel according to claim 1, characterized in that: The distances between a set of the support plates (254) are the same. The button bodies of the contact buttons (256) are all higher than the upper end surfaces of the support plates (254). The notches (255) are all arranged with openings facing right. The notches (255) are all arranged below the base columns (33). The inner diameter sizes of the notches (255) are larger than the diameter sizes of the base columns (33).

4. A quenching and tempering integrated device for the production of wind power gear steel according to claim 1, characterized in that: The spring (346) is arranged between the outer end surface of the support block (345) and the inner wall of the block groove (334). The sleeve plate (351) is arranged below the linkage block (347). The inclined surface of the linkage block (347) is in contact with the inclined surface of the guide plate (354). The push bar (355) is an arc-shaped bar structure. The push bar (355) is arranged on the right side of the sleeve plate (351). The upper protruding part of the transfer rack (31) is slidably connected to the guide rail (13).

5. The quenching and tempering integrated equipment for the production of wind power gear steel according to claim 1, wherein: The inner partition part (84) is arranged inside the storage cavity of the storage shell (811). The lower end surface of the seat plate (841) is in contact with the lower inner wall of the storage cavity of the storage shell (811). The outer curved surfaces of the seat plate (841) and the partition plate (844) are both in contact with the inner curved surface of the storage shell (811). Pin blocks are arranged on both sides of the upper part of the storage shell (811). Pin plates are arranged on both sides of the upper part of the base cover (86). The pin blocks of the storage shell (811) are inserted into the pin plates of the base cover (86). A plurality of exhaust holes arranged at equal angles are arranged inside the base cover (86).

6. The quenching and tempering integrated equipment for the production of wind power gear steel according to claim 1, characterized in that: The front end of the through pipe (82) protrudes from the storage shell (811). The rear end of the flexible connecting pipe (74) is sleeved outside the front end of the through pipe (82). A damping pad (874) is fixedly connected to the upper inner wall of the storage groove (872). The lower end surface of the damping pad (874) is in contact with the upper curved surface of the flip cover (873). The widest dimension of the flip cover (873) is smaller than the dimension between a set of steel rails of the rail frame (11).

7. A quenching and tempering integrated device produced by using a wind power gear steel as described in any one of claims 1-6, and its production process: Step 1: Raw material preparation. First, select alloy structural steels with high strength, high toughness, and high hardenability, including carburizing steels and quenched and tempered steels. These materials need to have high purity, high tissue uniformity, and good mechanical properties to meet the usage requirements of wind power gear steels under high loads and complex working conditions; Step 2: Smelting and casting: Use electric arc furnace or converter for preliminary smelting, then further purify through refining outside the furnace, and finally remove gas and impurities through vacuum degassing or vacuum oxygen decarburization process to ensure the purity of molten steel and complete smelting; then cast the refined molten steel into ingots or continuous casting billets. During the process, the casting temperature and cooling rate need to be strictly controlled to avoid internal defects and complete casting; Step 3: Forging and preliminary treatment. Forging is one of the key steps in the production of wind turbine gear steel. During the forging process, the steel ingot or continuous casting billet is heated to an appropriate temperature and then subjected to free forging or die forging on the forging equipment to improve the density and mechanical properties of the material and eliminate internal defects. The forged steel parts are preliminarily machined by machine tools to meet the size and shape accuracy required by the wind turbine gear drawings, and the wind turbine gear billet is obtained to complete the preliminary treatment. Step 4: Pre-operation before quenching and tempering: The wind turbine gear steel billets are transported one by one to the barrel (22) of the loading module (2) through an external overhead conveyor belt device. The steel billets enter through the upper expansion opening of the barrel (22) and are stacked in the barrel (22). The motor (215) is started through the control box to drive the rear roller (214) to operate, so that the conveyor belt (216) moves forward in a cycle, pushing the steel billet at the bottom of the barrel (22) through the discharge port (23), and the limit plates (216) on both sides are moved forward. 24) provides a guide for the steel billet to move toward the back plate (252). When the steel billet contacts the back plate (252), the contact button (256) on the upper side support plate (254) is pressed, indicating that the first steel billet has been in place. At this time, the control box controls the back plate (252) and the support plate (254) to move up a set distance through the cylinder (251), and the middle side support plate (254) moves up to replace the original position of the upper side support plate (254). Repeat the above operation and wait for When the next billet is in place, when all the billets on the upper, middle and lower side pallets (254) are in place, the control box stops the conveyor belt (216) from running and no new billets are conveyed. At the same time, the cylinder (251) further extends and pushes upward, so that each pallet (254) moves upward, lifts each billet and moves it toward the handling module (3), so that the base column (33) passes through the billet and the pallet (254) that are moving upward. During this period, each group of support blocks (345) performs telescopic movement in each block slot (334). Finally, the steel billets are unfolded in the notches (255) of the supporting plates (254) to lift the steel billets. At this time, the transfer rack (31) is controlled to move rightward, driving the base column (33) and the supporting portion (34) to move, so that the steel billets are separated from the supporting plates (254) and move rightward, completing the pre-lifting operation before quenching and tempering. Through this operation, the quenching and tempering integrated equipment can automatically lift multiple wind power gear steel billets at intervals, thereby improving the subsequent heat treatment efficiency and ensuring that the steel billets are heated evenly. Step Five: Quenching operation. Through the handling module (3), each wind power gear blank is transported above the heating furnace (4). Subsequently, the control box drives the electric push rod (32) to extend, pushing the base column (33) and the supporting part (34) downward, so that the wind power gear blank enters the heating furnace (4) along with the base column (33) and the supporting part (34). In the heating furnace (4), the blank is heated to above the critical temperature Ac3 or Ac1. After the heating is completed, the blank is immediately transported into the quenching tank (5) through the handling module (3), and the blank is rapidly cooled using the quenching liquid in the quenching tank (5) to complete the quenching process. The quenched blank will obtain high hardness and high strength, but has large internal stress, so subsequent tempering treatment is required; Step Six: Tempering and temperature recovery operation. Through the handling module (3), each quenched wind power gear blank is transported into the tempering furnace (6) for high-temperature tempering, so that the quenched blank is reheated to an appropriate temperature below the lower critical temperature Ac1. During the tempering process, martensite decomposes and the retained austenite decreases, resulting in a decrease in hardness and an increase in toughness, thus completing the tempering and temperature recovery operation; Step Seven: Tempering heat preservation operation. Through the handling module (3), the wind power gear steel billets to be heat-preserved are transported above the opening of the base cover (86). Subsequently, control the electric push rod (32) to extend, pushing the base column (33) and the supporting part (34) to move downward, so that the steel billets pass through the base cover (86) and enter the storage shell (811), and ensure that each steel billet is higher than each storage plate of the storage rack plate (85). At this time, control the transfer rack (31) to move to the right, driving the electric push rod (32), the base column (33), the supporting part (34) and the transmission part (35) to move to the right as a whole. The rightward movement of the base column (33) and the supporting part (34) transports each steel billet above each storage plate of the storage rack plate (85), enabling the storage rack plate (85) to support each steel billet; while the rightward movement of the transmission part (35) causes the push bar (355) to be squeezed by the cover-lifting part (87), driving the guide plate (354) to move to the left, and further causing the linkage block (347), the rail rod (341), the base block (342) and the linkage rod (343) to move upward in sequence. The upward movement of the linkage rod (343) drives each group of supporting blocks (345) to retract into the block groove (334) through the connecting rope (344), so that each group of supporting blocks (345) no longer supports the steel billets, enabling the handling module (3) to complete the hoisting task. At this time, control the electric push rod (32) to contract, driving the base column (33) to move upward and separate from the steel billets. Subsequently, the driving part (83) drives the inner partition part (84) to rotate 60 degrees, displacing other idle storage rack plates (85) to the opening of the base cover (86) to prepare to receive the next group of steel billets for heat preservation storage; when there are no idle storage rack plates (85), it indicates that the storage heat preservation module (8) has reached the maximum storage capacity. At this time, the storage heat preservation module (8) will no longer receive new steel billets. At this time, the staff can rotate the flip cover (873) to close the opening of the base cover (86) for heat preservation use; to ensure that the temperature in the storage shell (811) is suitable for heat preservation, the control box will regularly start the air extraction pump (72). Through the shunt pipe (71), the gas transmission pipe (73), the flexible connection pipe (74) and the through pipe (82), the high-temperature gas in the heating furnace (4) and the tempering furnace (6) is transported into the air cavity (842), then sent into the storage shell (811) through the air inlet hole (843), and finally discharged from the exhaust hole of the base cover (86). This process enables the wind power gear steel billets in the storage shell (811) to be heat-preserved for a long time, completing the tempering heat preservation operation; Step Eight: Tempering air cooling operation. For the wind power gear steel billets that have been heat-preserved for a long time, after the heat preservation is completed, the flexible connection pipe (74) can be separated from the through pipe (82), and the entire storage heat preservation module (8) can be moved to the right out of the track frame (11). Subsequently, remove the base cover (86) to completely open the storage shell (811), exposing the wind power gear steel billets stored inside. At this time, the steel billets are placed in the air for natural cooling. This process helps to stabilize the organizational structure of the steel and effectively eliminate internal stress, completing the air cooling operation and also completing the entire tempering operation; Step 9: Post-processing operation. Grind the quenched and tempered wind power gear steel billet to perform finish machining, improve the tooth profile accuracy and surface finish, and then conduct hardness testing, dimensional inspection, surface quality inspection and metallographic inspection to ensure that it meets the design requirements, thereby completing the production of wind power gear steel.

Images