A gear shaft quenching device

Abstract

The present invention relates to the technical field of quenching, in particular to a quenching device for a gear shaft, which includes a base. An induction heating equipment main body and a water collecting tank are correspondingly installed on the base. A lifter is installed on the induction heating equipment main body, and an induction coil is fixedly installed on the lifter. A ring-shaped water sprayer is arranged directly below the induction coil, and the ring-shaped water sprayer is fixedly connected to the lifter. The ring-shaped water sprayer is connected to a quenching liquid supply device. A rotating shaft is rotatably installed on the base on one side of the water collecting tank. The rotating shaft is arranged vertically. A hydraulic rod is fixedly installed on one surface of the rotating shaft. A vertical rod is coaxially fixed to the output end of the hydraulic rod. A clamping device is fixedly installed at one end of the vertical rod away from the hydraulic rod. The clamping device is used for clamping the gear shaft, and the rotating shaft is drivingly connected to a rotating motor. The present invention realizes the horizontal transfer of the gear shaft by using the rotating shaft in cooperation with the clamping device, so that the gear shaft can be more conveniently aligned with the induction coil, and it also has the functions of waste gas treatment and gear shaft blowing.

Description

Technical Field

[0001] The present invention relates to the technical field of quenching, and particularly to a quenching device for a gear shaft. Background Art

[0002] During the production process of a gear shaft, it is necessary to perform quenching treatment on the gear shaft to improve its mechanical properties. In the prior art, an induction quenching device is mainly used to quench the gear shaft. The induction quenching device has excellent local heating ability and is particularly suitable for components such as shaft gears that only need to quench the surface to improve performance. It can highly concentrate the magnetic field in the surface area of the shaft gear to achieve precise local heating, with less impact on other parts of the shaft gear (such as the internal spokes, hubs, etc. that do not need to be quenched). In this way, it can not only ensure that the surface area obtains the required heating effect but also avoid unnecessary heating of the entire shaft gear, thereby reducing problems such as deformation and microstructure changes caused by overheating, and helping to maintain the overall dimensional accuracy and mechanical properties of the shaft gear.

[0003] The existing induction quenching device mainly includes induction heating equipment. An induction coil is arranged on the induction heating equipment, and an annular water sprayer is arranged below the induction coil. During quenching, after inserting the gear shaft from above between the induction coil and the annular water sprayer, the gear shaft is clamped and fixed on the lifter. During quenching, the induction heating equipment energizes the induction coil, the quenching liquid supply equipment supplies quenching liquid to the annular water sprayer, and the lifter drives the gear shaft to reciprocate axially. When the gear shaft passes through the induction coil, it will be heated, and the heated part will be rinsed and cooled by the annular quenching liquid water flow sprayed by the annular water sprayer. During the above quenching process, when the gear shaft is clamped on the lifter, it is necessary to manually align the gear shaft so that the gear shaft can be coaxially distributed with the induction coil. Some gear shafts are large in volume and weight, and a hoisting device needs to be used to move the gear shaft throughout the process, which takes a long time to operate and has low efficiency. In addition, a large amount of harmful smoke is generated during the quenching process of the gear shaft, and these harmful smokes disperse in the workshop, endangering human health. Moreover, in order to improve the cooling performance of the quenching liquid, substances such as nitrates and sodium silicate need to be added to the quenching liquid. After the quenching liquid containing these substances is sprayed onto the surface of the gear shaft, if the surface of the gear shaft is not cleaned in time after quenching, after the water in the residual quenching liquid on the surface of the gear shaft evaporates, these substances will adhere to the surface of the gear shaft, which is difficult to clean and has a corrosive effect on the surface of the gear shaft. Summary of the Invention

[0004] The object of the present invention is to solve the disadvantages in the prior art, such as low efficiency of manually aligning the gear shaft, untreated harmful smoke generated during the quenching process, difficult cleaning of the residues of the quenching liquid adhering to the surface of the gear shaft and its corrosive effect, and to propose a quenching device for a gear shaft.

[0005] To achieve the above object, the present invention adopts the following technical solutions:

[0006] Design a quenching device for a gear shaft, including a base, on which an induction heating device main body and a water collecting tank are correspondingly installed. An elevator is installed on the induction heating device main body, and an induction coil is fixedly installed on the elevator. The induction coil is electrically connected to the induction heating device main body. A ring-shaped water sprayer is arranged directly below the induction coil, and the ring-shaped water sprayer is fixedly connected to the elevator. The ring-shaped water sprayer is connected to a quenching liquid supply device. A rotating shaft is rotatably installed vertically on the base on one side of the water collecting tank. The rotating shaft is vertically arranged. A hydraulic rod is fixedly installed on one side surface of the rotating shaft, and the hydraulic rod is arranged parallel to the rotating shaft. A vertical rod is coaxially fixed to the output end of the hydraulic rod. A clamp is fixedly installed at one end of the vertical rod away from the hydraulic rod. The clamp is used for clamping the gear shaft, and the rotating shaft is drivingly connected to a rotating motor.

[0007] Preferably, a cover body is coaxially sleeved on the vertical rod above the clamp. A vertical cylinder is coaxially fixed to the cover body, and the vertical cylinder is fixedly connected to the rotating shaft. An inner cylinder is coaxially arranged in the vertical cylinder. The bottom end of the inner cylinder is fixedly connected to the vertical cylinder through a sealing ring. A gap is left between the top end of the inner cylinder and the cover body. A piston is coaxially fixed to the vertical rod in the inner cylinder;

[0008] A plurality of air suction holes are circumferentially penetrated through the sealing ring, and a first one-way valve is installed in each air suction hole. An air outlet pipe communicating with the inside of the vertical cylinder is arranged on the cover body, and the air outlet pipe is used for connecting an exhaust gas treatment device. A second one-way valve is installed in the air outlet pipe.

[0009] Preferably, a gas collecting hood is coaxially fixed to the lower part of the vertical cylinder.

[0010] Preferably, a jet ring is coaxially arranged directly below the vertical cylinder, and the jet ring is fixedly connected to the vertical cylinder. An annular cavity is coaxially opened in the jet ring, and a plurality of jet holes are circumferentially penetrated through the inner wall of the jet ring. The annular cavity is communicated with a gas supply module.

[0011] Preferably, the gas supply module includes a gear ring, which is coaxially rotatably connected to the jet ring. A plurality of charging pipes are circumferentially arranged on the outer surface of the jet ring. A pump is connected to each charging pipe. An air suction pipe is arranged on the side wall of each pump, and a third one-way valve is installed in the air suction pipe. A fourth one-way valve is installed in the charging pipe. A piston rod is coaxially telescopically installed in each pump, a micro piston is installed on the piston rod, a magnetic attracting block is fixed to the piston rod, and a plurality of magnets are circumferentially fixed to the inner wall of the gear ring. The magnets and the magnetic attracting blocks attract each other.

[0012] Preferably, a gear meshing with the tooth ring is arranged on one side of the tooth ring. A driving shaft is coaxially fixed on the gear. A turbine housing is coaxially arranged above the driving shaft. A turbine rotor is installed in the turbine housing. The turbine rotor is coaxially connected to the driving shaft. The turbine housing is fixed on the vertical cylinder. The air inlet of the turbine housing is connected to the outlet pipe. The air outlet of the turbine housing is connected to the waste gas treatment device.

[0013] Preferably, the air outlet direction of the air jet holes inclines downward towards the air jet ring.

[0014] A gear shaft quenching device proposed by the present invention has the beneficial effects that:

[0015] By using the rotating shaft and the gripper to realize the horizontal transfer of the gear shaft, the gear shaft can be more conveniently aligned with the induction coil without manual adjustment, and the efficiency is higher;

[0016] By using the hydraulic rod to push the vertical rod to move, and the piston on the vertical rod cooperates with the inner cylinder to realize the compression and stretching of the gas in the whole vertical cylinder. Before quenching, the vertical rod drives the piston to move downward, so that the air pressure in the vertical cylinder can be maintained in a negative pressure state, and thus the harmful gases generated during the quenching process can be inhaled through the air suction holes. After quenching, the vertical rod drives the piston to move upward, so that the gas in the vertical cylinder can be in a high-pressure state, which is convenient to discharge it into the waste gas treatment device for harmless treatment;

[0017] By using the air supply module to fill the annular cavity with gas and then spray it out from the air jet holes to blow the gear shaft passing through the air jet ring, so as to blow the quenching liquid remaining on the surface of the gear shaft downward, making the subsequent cleaning of the surface of the gear shaft more convenient, and at the same time reducing the corrosion effect of the quenching liquid on the gear shaft. Description of the Drawings

[0018] Figure 1 It is a schematic diagram of the overall structure of a gear shaft quenching device proposed by the present invention;

[0019] Figure 2 It is a schematic diagram of the vertical cylinder structure of a gear shaft quenching device proposed by the present invention Figure 1 ;

[0020] Figure 3 It is a schematic diagram of the vertical cylinder structure of a gear shaft quenching device proposed by the present invention Figure 2 ;

[0021] Figure 4 It is a schematic diagram of the position structure of the air jet ring of a gear shaft quenching device proposed by the present invention;

[0022] Figure 5 It is a schematic diagram of the cross-sectional structure of the vertical cylinder of a gear shaft quenching device proposed by the present invention;

[0023] Figure 6 For Figure 5 Partial structural schematic diagram of location A;

[0024] Figure 7 Internal structural schematic diagram of the vertical cylinder of a gear shaft quenching device proposed by the present invention;

[0025] Figure 8 Structural schematic diagram of the position of the gear ring and the gear of a gear shaft quenching device proposed by the present invention;

[0026] Figure 9 Schematic diagram of the working state of a gear shaft quenching device proposed by the present invention Figure 1 ;

[0027] Figure 10 Schematic diagram of the working state of a gear shaft quenching device proposed by the present invention Figure 2 .

[0028] In the figure: 1, base; 2, main body of induction heating equipment; 3, induction coil; 4, lifter; 5, water collecting tank; 6, annular sprinkler; 7, rotating shaft; 8, cross arm; 9, hydraulic rod; 10, gripper; 11, rotating motor; 12, vertical rod; 13, cover body; 14, vertical cylinder; 15, inner cylinder; 16, sealing ring; 17, piston; 18, air suction hole; 19, air outlet pipe; 20, jet ring; 21, annular cavity; 22, air jet hole; 23, air filling pipe; 24, air pump; 25, air suction pipe; 26, piston rod; 27, micro piston; 28, magnetic attracting block; 29, gear ring; 30, magnet; 31, gear; 32, drive shaft; 33, turbine housing; 34, air collecting hood; 35, gear shaft workpiece. Specific embodiments

[0029] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0030] Embodiment 1: Refer to Figures 1 - 5 , Figure 7 , Figures 9 - 10, A gear shaft quenching device, including a base 1, on which an induction heating equipment main body 2 and a water collecting tank 5 are correspondingly installed. An elevator 4 is installed on the induction heating equipment main body 2, and an induction coil 3 is installed on the elevator 4. The induction coil 3 is electrically connected to the induction heating equipment main body 2. The induction coil 3 is placed above the water collecting tank 5. A ring-shaped water sprayer 6 is arranged directly below the induction coil 3. The ring-shaped water sprayer 6 is fixedly connected to the elevator 4. The ring-shaped water sprayer 6 is connected to a quenching liquid supply device. A rotating shaft 7 is rotatably installed on the base 1 on one side of the water collecting tank 5. The rotating shaft 7 is arranged vertically. A cross arm 8 is fixedly installed on one side surface of the rotating shaft 7. A hydraulic rod 9 is fixedly installed at one end of the cross arm 8 away from the rotating shaft 7. The hydraulic rod 9 is arranged parallel to the rotating shaft 7. A vertical rod 12 is coaxially fixed to the output end of the hydraulic rod 9. A gripper 10 is fixedly installed at one end of the vertical rod 12 away from the hydraulic rod 9. The gripper 10 is used for gripping the gear shaft. The rotating shaft 7 is drivingly connected to a rotating motor 11. The rotating motor 11 is used for rotating the rotating shaft 7 so that the rotating shaft 7 can drive the vertical rod 12 and the gripper 10 to make a circular motion through the cross arm 8 and the hydraulic rod 9. The movement trajectory of the gripper 10 corresponds to the position of the induction coil 3. By using the rotating shaft 7 to cooperate with the gripper 10 to realize the automatic transfer of the gear shaft, the gear shaft can be more conveniently aligned with the induction coil 3 without manual adjustment, and the efficiency is higher.

[0031] A cover body 13 is coaxially sleeved on the vertical rod 12 above the gripper 10. A vertical cylinder 14 is coaxially fixed to the cover body 13. The vertical cylinder 14 is fixedly connected to the rotating shaft 7. An inner cylinder 15 is coaxially arranged in the vertical cylinder 14. The bottom end of the inner cylinder 15 is fixedly connected to the vertical cylinder 14 through a sealing ring 16. A gap is left between the top end of the inner cylinder 15 and the cover body 13. A piston 17 is coaxially fixed to the vertical rod 12 in the inner cylinder 15;

[0032] A plurality of air suction holes 18 are circumferentially penetrated through the sealing ring 16. A first one-way valve is installed in each of the air suction holes 18. The first one-way valve is used to prevent the gas in the vertical cylinder 14 from flowing out through the air suction holes 18; An air outlet pipe 19 communicating with the inside of the vertical cylinder 14 is arranged on the cover body 13. The air outlet pipe 19 is used to connect to an exhaust gas treatment device. A second one-way valve is installed in the air outlet pipe 19. The second one-way valve is used to prevent the outside gas from flowing into the vertical cylinder 14 through the air outlet pipe 19. The aperture of the air suction holes 18 is relatively small, controlled within 0.5 mm, so that the flow rate of the outside gas entering the vertical cylinder 14 is relatively small, so that it can inhale the outside gas into the vertical cylinder 14 through the air suction holes 18 for a long time.

[0033] The function of the above structure is that during the process of using the hydraulic rod 9 to push the vertical rod 12 to move, the piston 17 on the vertical rod 12 cooperates with the inner cylinder 15 to compress and stretch the gas in the entire vertical cylinder 14. Before quenching, the vertical rod 12 drives the piston 17 to move downward, so that the air pressure in the vertical cylinder 14 can be maintained in a negative pressure state, and thus waste gas can be inhaled through the air suction hole 18. After quenching, the vertical rod 12 drives the piston 17 to move upward, so that the gas in the vertical cylinder 14 can be in a relatively high pressure state, which is convenient for discharging it into the waste gas treatment device.

[0034] A gas collecting hood 34 is coaxially fixed at the lower part of the vertical cylinder 14. The gas collecting hood 34 can better guide the waste gas to the periphery of the air suction hole 18.

[0035] Embodiment 2: Refer to Figure 6 、 Figure 8 , as another preferred embodiment of the present invention, different from Embodiment 1, a jet ring 20 is coaxially arranged directly below the vertical cylinder 14. The jet ring 20 is fixedly connected to the vertical cylinder 14. An annular cavity 21 is coaxially opened in the jet ring 20. A plurality of jet holes 22 are axially penetrated through the inner wall of the jet ring 20 in the circumferential direction. The diameter of the jet holes 22 is relatively small, controlled within 1 mm, so that the gas filled into the annular cavity 21 will not be ejected quickly and can be ejected continuously for a period of time. The annular cavity 21 is communicated with a gas supply module, and the gas supply module is used to fill gas into the annular cavity 21.

[0036] The function of the above structure is that the gas supply module fills gas into the annular cavity 21 and then ejects it from the jet holes 22 to blow the gear shaft passing through the jet ring 20, so as to blow the quenching liquid remaining on the surface of the gear shaft downward, making it more convenient to clean the surface of the gear shaft subsequently, and at the same time reducing the corrosion effect of the quenching liquid on the gear shaft.

[0037] The air supply module includes a plurality of inflatable tubes 23, a plurality of air pumps 24, a plurality of air suction tubes 25, a plurality of piston rods 26, a plurality of micro pistons 27, a plurality of magnetic blocks 28, a gear ring 29, and a plurality of magnets 30. A gear ring 29 is coaxially sleeved on the jet ring 20, and the gear ring 29 is coaxially rotatably connected with the jet ring 20. A plurality of inflatable tubes 23 connected with the annular cavity 21 are circumferentially arranged on the outer surface of the jet ring 20, and each inflatable tube 23 is connected with an air pump 24, and an air suction tube 25 connected with the inside of the air pump 24 is arranged on the side wall of the air pump 24. A third one-way valve is installed in the suction pipe 25, and the third one-way valve is used to prevent the gas in the air pump 24 from flowing out through the suction pipe 25. A fourth one-way valve is installed in the inflation pipe 23, and the fourth one-way valve is used to prevent external gas from entering the air pump 24 through the inflation pipe 23. A piston rod 26 is coaxially telescopically installed in each air pump 24, and a micro piston 27 is installed on the piston rod 26. A magnetic block 28 is fixed on the piston rod 26, and a plurality of magnets 30 are fixed on the inner wall of the gear ring 29 along the circumferential direction, and the magnet 30 and the magnetic block 28 attract each other.

[0038] When the air supply module is in use, when the gear ring 29 is rotated, the gear ring 29 drives the multiple magnets 30 to make circular motions. Whenever a magnet 30 is aligned with a magnetic block 28 and then staggered, the magnetic force between the two will drive the piston rod 26 and the micro piston 27 to move back and forth in the air pump 24, so that the air pump can continuously inhale gas through the suction pipe 25, and then fill the gas into the annular cavity 21 through the inflation pipe 23. This is repeated continuously, so that the gas in the annular cavity 21 can maintain a high pressure state. The whole process does not require an air compressor, and the structure is simpler and more reliable.

[0039] A gear 31 meshing with the gear ring 29 is provided on one side, a drive shaft 32 is coaxially fixed on the gear 31, a turbine shell 33 is coaxially provided above the drive shaft 32, a turbine rotor is installed in the turbine shell 33, the turbine rotor is coaxially connected to the drive shaft 32, the turbine shell 33 is fixed on the vertical cylinder 14, the air inlet of the turbine shell 33 is connected to the outlet pipe 19, and the air outlet of the turbine shell 33 is connected to the exhaust gas treatment device.

[0040] The function of the above structure is to utilize the turbine rotor in the turbine shell 33 and the high-pressure exhaust gas distributed in the exhaust pipe 19 as a power source to drive the turbine rotor to rotate. The turbine rotor drives the drive shaft 32 to rotate, so that the drive shaft 32 drives the gear 31 to rotate, so that the gear 31 can drive the gear ring 29 to rotate, so that the gas energy discharged from the vertical cylinder 14 can be effectively utilized.

[0041] The air outlet direction of the air injection hole 22 is inclined downwardly of the air injection ring 20 .

[0042] The overall workflow of the present invention is as follows:

[0043] As shown in the Figures 9 - 10 accompanying drawings, the gear shaft workpiece 35 is vertically clamped by the gripper 10. At this time, the hydraulic rod 9 is controlled to drive the vertical rod 12 to move upward, so that the vertical rod 12 drives the gripper 10 to move upward. Finally, the gripper 10 drives the gear shaft workpiece 35 thereon into the inner cylinder 15. Then the rotation motor 11 is started, and the rotation motor 11 drives the rotating shaft 7 to rotate, so that the rotating shaft 7 drives the vertical cylinder 14 to rotate to directly above the induction coil 3. Then the hydraulic rod 9 is started again, and the hydraulic rod 9 pushes the vertical rod 12 and the gripper 10 to descend, and the gear shaft workpiece 35 on the gripper 10 descends coaxially until the gear shaft workpiece 35 extends into the induction coil 3 and the annular water sprayer 6. Then the elevator 4 is controlled to drive the induction coil 3 and the annular water sprayer 6 to move up and down, and the induction heating device main body 2 is started to energize the induction coil 3, and the quenching liquid supply device supplies quenching liquid to the annular water sprayer 6, so that the induction coil 3 can electrically heat the surface of the gear shaft workpiece 35, and the quenching liquid sprayed by the annular water sprayer 6 can quickly cool the gear shaft workpiece 35. After quenching, the hydraulic rod 9 is controlled to drive the vertical rod 12 and the gripper 10 to reset, so that the gear shaft workpiece 35 is retracted into the vertical cylinder 14, and then the rotation motor 11 is started again, and the rotation motor 11 drives the rotating shaft 7 to reset, thus completing the quenching of the gear shaft workpiece 35;

[0044] In the above process, when the gear shaft workpiece 35 is extended into the induction coil 3 and the annular sprinkler 6, the vertical rod 12 will drive the piston 17 thereon to move downward. During the downward movement of the piston 17, the gas in the cavity formed by the inner cylinder 15 and the vertical cylinder 14 will be in a negative pressure state. In this way, during the quenching of the gear shaft workpiece 35, the harmful gas generated will be gathered by the gas collecting hood 34 and then sucked into the cavity formed by the inner cylinder 15 and the vertical cylinder 14 through the suction hole 18 until the cavity finally presents a positive pressure state; when the quenching is completed, during the resetting of the gear shaft workpiece 35, the vertical rod 12 will drive the piston 17 to move upward, which will cause the space in the cavity to be compressed, and the harmful gas sucked inside will be in a high-pressure state and slowly ejected through the outlet pipe 19. The ejected harmful gas will enter the turbine shell 33, drive the turbine rotor in the turbine shell 33 to rotate, and finally enter the harmful gas through the outlet of the turbine shell 33. In the gas processing equipment, the rotating turbine rotor will drive the drive shaft 32 to rotate, the drive shaft 32 drives the gear 31 to rotate, the gear 31 drives the gear ring 29 to rotate, and the gear ring 29 drives multiple magnets 30 to do circular motion. Whenever a magnet 30 is aligned with a magnetic block 28 and then staggered, the magnetic force between the two will drive the piston rod 26 and the piston 17 to move back and forth in the air pump 24, so that the air pump can continuously inhale gas through the suction pipe 25, and then fill the gas into the annular cavity 21 through the inflation pipe 23. This is repeated continuously, so that the gas in the annular cavity 21 can maintain a high pressure state. The high-pressure gas in the annular cavity 21 will be ejected in a ring shape through the multiple injection holes 22 on the injection ring 20. In this way, when the gear shaft workpiece 35 is reset upward, when passing through the injection ring 20, the ejected high-pressure gas will blow down the quenching liquid remaining on the surface of the gear shaft workpiece 35.

[0045] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A gear shaft quenching device, comprising a base (1), on which an induction heating device body (2) and a water collecting tank (5) are correspondingly mounted, characterized in that: A lifter (4) is installed on the induction heating device body (2), an induction coil (3) is fixedly installed on the lifter (4), the induction coil (3) is electrically connected to the induction heating device body (2), an annular water sprayer (6) is arranged directly below the induction coil (3), the annular water sprayer (6) is fixedly connected to the lifter (4), the annular water sprayer (6) is connected to a quenching liquid supply device, a rotating shaft (7) is vertically rotatably installed on the base (1) on one side of the water collecting tank (5), a hydraulic rod (9) is fixedly installed on one side of the rotating shaft (7), the hydraulic rod (9) is arranged parallel to the rotating shaft (7), a vertical rod (12) is coaxially fixed on the output end of the hydraulic rod (9), a clamp (10) is fixedly installed on the end of the vertical rod (12) away from the hydraulic rod (9), the clamp (10) is used to clamp the gear shaft, and the rotating shaft (7) is drivingly connected to a rotating motor (11); A cover body (13) is coaxially sleeved on the vertical rod (12) above the clamp (10), a vertical cylinder (14) is coaxially fixed on the cover body (13), the vertical cylinder (14) is fixedly connected to the rotating shaft (7), an inner cylinder (15) is coaxially arranged inside the vertical cylinder (14), the bottom end of the inner cylinder (15) is fixedly connected to the vertical cylinder (14) via a sealing ring (16), and a gap is left between the top end of the inner cylinder (15) and the cover body (13). A piston (17) is coaxially fixed on the vertical rod (12) in the inner cylinder (15); a plurality of air intake holes (18) are circumferentially penetrated on the sealing ring (16), and a first one-way valve is installed in each of the air intake holes (18); an air outlet pipe (19) communicating with the interior of the vertical cylinder (14) is provided on the cover body (13), and the air outlet pipe (19) is used to connect to an exhaust gas treatment device, and a second one-way valve is installed in the air outlet pipe (19).

2. The gear shaft quenching device according to claim 1, characterized in that: An air collecting hood (34) is coaxially fixed to the lower part of the vertical cylinder (14).

3. The gear shaft quenching device according to claim 2, characterized in that: A jet ring (20) is coaxially fixed to the lower part of the vertical cylinder (14), the jet ring (20) being fixedly connected to the vertical cylinder (14), an annular cavity (21) being coaxially provided in the jet ring (20), a plurality of jet holes (22) being circumferentially penetrated through the inner wall of the jet ring (20), and the annular cavity (21) being connected to an air supply module.

4. The gear shaft quenching device according to claim 3, characterized in that: The air supply module comprises a gear ring (29) which is coaxially rotatably connected to an air jet ring (20). A plurality of air charging tubes (23) are circumferentially arranged on the outer surface of the air jet ring (20). Each of the air charging tubes (23) is connected to an air pump (24). An air suction tube (25) is arranged on the side wall of the air pump (24). A third one-way valve is installed in the air suction tube (25). A fourth one-way valve is installed in the air charging tube (23). A piston rod (26) is coaxially telescopically installed in each of the air pumps (24). A micro piston (27) is installed on the piston rod (26). A magnetic attraction block (28) is fixed on the piston rod (26). A plurality of magnets (30) are circumferentially fixed on the inner wall of the gear ring (29). The magnets (30) and the magnetic attraction block (28) attract each other.

5. The gear shaft quenching device according to claim 4, characterized in that: A gear (31) meshing with the gear ring (29) is disposed on one side thereof, a drive shaft (32) being coaxially fixed to the gear (31), a turbine shell (33) being coaxially disposed above the drive shaft (32), a turbine rotor being mounted in the turbine shell (33), the turbine rotor being coaxially connected to the drive shaft (32), the turbine shell (33) being fixed to the vertical cylinder (14), an air inlet of the turbine shell (33) being connected to an air outlet pipe (19), and an air outlet of the turbine shell (33) being connected to an exhaust gas treatment device.

6. The gear shaft quenching device according to claim 5, characterized in that: The air outlet direction of the air injection hole (22) is arranged to be inclined toward the bottom of the air injection ring (20).

Images