A heat treatment auxiliary device for an automotive transmission internal gear

Abstract

The present application relates to gear quenching technical field, especially to a kind of automobile transmission with internal gear heat treatment auxiliary equipment, including installation frame, quenching pool and quenching inductor etc.;Quenching pool is fixedly connected on installation frame;Quenching inductor is fixedly connected on quenching pool;Induction coil is fixedly connected on quenching inductor.The present application is through auger feeder rotation suction quenching pool in quenching liquid, make the quenching liquid of gear periphery flow into second connecting barrel, and the quenching liquid in second connecting barrel flows in the mode from top to bottom, then the quenching liquid in second connecting barrel flows into first connecting barrel, and then the quenching liquid in first connecting barrel flows into first telescopic pipe, and is discharged to quenching pool inner bottom through filter screen on first telescopic pipe, so that quenching liquid and quenching pool inner bottom quenching liquid exchange heat in quenching process with gear heat exchange.

Description

Technical Field

[0001] This invention relates to the field of gear quenching technology, and in particular to an auxiliary device for heat treatment of internal gears for automotive transmissions. Background Technology

[0002] In gear manufacturing, to improve the mechanical properties and ensure the reliability of the gears, heat treatment is often performed after the gears are formed. During continuous heat treatment, due to the short intervals between quenching, the temperature of the quenching fluid around the gear rises and cannot quickly exchange heat with other quenching fluids in the quenching tank. This results in the quenching fluid being at a high temperature during subsequent quenching, affecting gear cooling, reducing gear hardenability, and causing uneven hardening. Furthermore, oxide scale will form on the gear surface during heating, and during subsequent quenching, this oxide scale will detach from the gear surface and enter the quenching fluid. The oxide scale will accumulate in the quenching fluid, affecting the quenching process. If the quenching fluid is not cleaned and replaced in time, it will affect the operation of subsequent quenching processes.

[0003] The temperature of the quenching fluid does indeed affect the quenching effect on gears. The cooling capacity of the quenching fluid is a key factor in the quenching process, and this capacity is affected by temperature. The following are some possible effects of quenching fluid temperature on gear quenching: 1. Changes in cooling rate: As the temperature of the quenching fluid increases, its cooling capacity decreases because the temperature difference between the fluid and the workpiece reduces, resulting in a slower cooling rate. The quenching effect largely depends on the cooling rate; therefore, a high quenching fluid temperature may prevent the gear surface from achieving the desired hardening depth or hardness.

[0004] 2. Changes in hardenability: Hardenability refers to the depth to which a material can achieve uniform hardness through quenching. If the quenching fluid temperature is too high, the cooling capacity of the quenching fluid decreases, which may result in insufficient hardenability inside the gear, leading to insufficient hardness in the central part and affecting the overall performance of the gear.

[0005] 3. Uneven hardened layer: Changes in the temperature of the quenching fluid may also lead to uneven thickness and hardness of the hardened layer, affecting the wear resistance and service life of the gears.

[0006] 4. Risk of workpiece deformation: When the quenching liquid temperature is high, if the cooling is not rapid enough, the stress distribution of the workpiece during the cooling process may be uneven, increasing the risk of workpiece deformation.

[0007] 5. Changes in metallographic structure: The temperature of the quenching liquid also affects the final metallographic structure of the workpiece. Excessive temperature may cause some areas to not be fully quenched, resulting in non-martensitic structures, such as ferrite, which reduces hardness and strength.

[0008] Therefore, controlling the temperature of the quenching fluid within an appropriate range is crucial to ensure that the gear quenching treatment meets design requirements. In production, the temperature of the quenching fluid is typically monitored and controlled regularly, and cooling measures are taken when necessary to ensure the stability and consistency of the quenching process. Summary of the Invention

[0009] To overcome the shortcomings of continuous heat treatment of gears, where the short interval between quenching operations prevents the quenching fluid around the gear from quickly exchanging heat with other quenching fluids in the quenching tank after the temperature rises, resulting in the quenching fluid being at a high temperature during subsequent gear quenching, thus affecting gear cooling, reducing gear hardenability, and causing uneven hardened layers, this invention provides an auxiliary device for heat treatment of internal gears for automotive transmissions.

[0010] The technical implementation of this invention is as follows: An auxiliary heat treatment device for internal gears in automotive transmissions includes a mounting frame, a quenching tank, and a quenching inductor; the quenching tank is fixedly connected to the mounting frame; the quenching inductor is fixedly connected to the quenching tank; an induction coil is fixedly connected to the quenching inductor; it also includes a first connecting cylinder, an electric slide rail, an electric slider, a connecting rod, a waterproof shell, a DD motor, a second connecting cylinder, a support block, an auger feeder, a first telescopic pipe, and a sludge collection tank; several electric slide rails are fixedly connected inside the mounting frame; an electric slider is slidably connected to each electric slide rail; a connecting rod is fixedly connected to each electric slider; all connecting rods are jointly fixed. A waterproof shell is connected to the structure; a second connecting cylinder is fixedly connected to the waterproof shell; a support block is fixedly connected to the second connecting cylinder; a DD motor is fixedly connected inside the waterproof shell, and the waterproof shell provides waterproof protection for the DD motor; a first connecting cylinder is fixedly connected to the output shaft of the DD motor, and the first connecting cylinder communicates with the second connecting cylinder; an auger feeder is fixedly connected to the first connecting cylinder; the auger feeder contacts the second connecting cylinder; a first telescopic pipe is fixedly connected to the waterproof shell, and the first telescopic pipe communicates with the first connecting cylinder; the first telescopic pipe is fixedly connected to the quenching tank; a sludge collection tank is fixedly connected to the quenching tank; the sludge collection tank communicates with the first telescopic pipe, and a solenoid valve is installed inside the first telescopic pipe.

[0011] Optionally, a rubber clamp is provided at the upper end of the second connecting cylinder to fix the gear through the telescoping property of the rubber clamp.

[0012] Optionally, the surface of the second connecting cylinder is equipped with a rubber sleeve.

[0013] Optionally, the first telescopic pipe is provided with a number of drain outlets, and each drain outlet is provided with a filter screen.

[0014] Optionally, it also includes a cleaning assembly, which includes a connecting plate, a limiting cylinder, and brush bristles; several connecting plates are fixedly connected inside the quenching tank; all the connecting plates are connected to the limiting cylinder, and the limiting cylinder is slidably connected to the second connecting cylinder; several annular arrays of brush bristles are fixedly connected inside the limiting cylinder.

[0015] Optionally, the bristles are made of heat-resistant silicone material.

[0016] Optionally, it also includes a filter assembly, which includes a second telescopic tube, a squeezing plate, a spring limiting rod, and a sealing plate; the second telescopic tube is fixedly connected to the limiting cylinder; the second telescopic tube communicates with the first telescopic tube; the second telescopic tube is fixedly connected to the connecting rod; all the connecting rods are fixedly connected to a plurality of squeezing plates; a plurality of spring limiting rods are threaded through the limiting cylinder; and the telescopic rods on all the spring limiting rods are fixedly connected to a sealing plate.

[0017] Optionally, several limit cylinders are provided.

[0018] Optionally, the sealing plate is provided with an arc-shaped structure.

[0019] Optionally, the lower part of the sealing plate is provided with a rubber structure that fits the through hole.

[0020] Compared with the prior art, the present invention has the following advantages: 1. The present invention uses a auger feeder to rotate and draw quenching liquid from the quenching tank, causing the quenching liquid around the gear to flow into the second connecting cylinder. The quenching liquid in the second connecting cylinder flows from top to bottom, and then flows into the first connecting cylinder. After that, the quenching liquid in the first connecting cylinder flows into the first telescopic pipe and is discharged to the bottom of the quenching tank through the filter screen on the first telescopic pipe. This allows the quenching liquid that exchanges heat with the gear during the quenching process to exchange heat with the quenching liquid at the bottom of the quenching tank. During the quenching process, the quenching liquid drawn by the auger feeder is the quenching liquid at room temperature in the upper part of the quenching tank, which allows sufficient time for the quenching liquid that exchanges heat with the gear during the quenching process to exchange heat with the quenching liquid at the bottom of the quenching tank. In this way, the temperature of the gear is quickly reduced by the quenching liquid circulating around the gear, and the temperature of the gear quenching area is prevented from rising rapidly by the circulating quenching liquid. 2. This invention utilizes a support block and gears that move up and down within a limiting cylinder. This movement causes the gears to contact the brush bristles and brush away the oxide scale, detaching stubborn oxide scale from the gears. Simultaneously, the moving gears continuously compress the quenching fluid within the limiting cylinder, pushing it upwards. This accelerates the flow of the quenching fluid within the limiting cylinder, speeding up the cooling of the gears. Furthermore, as the quenching fluid is pushed upwards, it washes away the oxide scale at the bottom of the gears, causing it to move upwards and then, with the cooperation of the second connecting cylinder and the auger feeder, enter the first telescopic pipe. From there, it enters the collection tank. Thus, during gear quenching, the oxide scale on the gears is cleaned, and the cooling of the gears is accelerated. 3. In this invention, residual oxide scale on the brush bristles is scraped off by the sealing plate. The oxide scale then enters the second telescopic tube through the through hole, then enters the first telescopic tube through the second telescopic tube, and finally enters the sludge collection tank to collect the cleaned oxide scale. After long-term operation, the solenoid valve built into the first telescopic tube is closed, and then the sludge collection tank is removed from the quenching tank to clean the oxide scale. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of the auxiliary equipment for heat treatment of internal gears in automotive transmissions according to the present invention; Figure 2 This is a schematic diagram of the internal structure of the auxiliary equipment for heat treatment of internal gears in automotive transmissions according to the present invention; Figure 3 This is a schematic diagram of the combined structure of the second connecting cylinder, support block, auger feeder and first telescopic tube of the auxiliary equipment for heat treatment of internal gears for automotive transmissions of the present invention. Figure 4 This is a schematic diagram of the cleaning assembly of the auxiliary equipment for heat treatment of internal gears in automotive transmissions according to the present invention; Figure 5 This is a schematic diagram of the filter assembly of the auxiliary equipment for heat treatment of internal gears in automotive transmissions according to the present invention; Figure 6 This is a schematic diagram of the combined structure of the extrusion plate, spring limiting rod, and sealing plate of the auxiliary equipment for heat treatment of internal gears in automotive transmissions according to the present invention.

[0022] The components in the attached diagram are labeled as follows: 001-Gear, 1-Mounting bracket, 2-Quenching tank, 3-Quenching inductor, 3001-Induction coil, 4-First connecting cylinder, 5-Electric slide rail, 6-Electric slider, 7-Connecting rod, 8-Waterproof shell, 9-DD motor, 10-Second connecting cylinder, 11-Support block, 12-Auger feeder, 13-First telescopic tube, 13001-Filter screen, 14-Sludge collection box, 101-Connecting plate, 102-Limiting cylinder, 102001-Through hole, 103-Brush bristles, 201-Second telescopic tube, 202-Extrusion plate, 203-Spring limiting rod, 204-Sealing plate. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings. It is hereby declared that the directional terms such as up, down, left, right, front, back, inside, and outside used in this text are based solely on the accompanying drawings and are not intended to specifically limit the invention.

[0024] Example 1 An auxiliary device for heat treatment of internal gears in automotive transmissions, such as Figures 1-3 As shown, it includes a mounting frame 1, a quenching pool 2, and a quenching sensor 3; the quenching pool 2 is bolted to the mounting frame 1; the quenching sensor 3 is bolted to the quenching pool 2; and an induction coil 3001 is fixedly connected to the quenching sensor 3. It also includes a first connecting cylinder 4, an electric slide rail 5, an electric slider 6, a connecting rod 7, a waterproof shell 8, a DD motor 9, a second connecting cylinder 10, a support block 11, an auger feeder 12, a first telescopic pipe 13, and a sludge collection box 14; the mounting frame 1 is internally bolted with two symmetrically arranged electric slide rails 5; each electric slide rail 5 is slidably connected to an electric slider 6; each electric slider 6 is fixedly connected to a connecting rod 7; all connecting rods 7 are jointly fixedly connected to a waterproof shell 8; a second connecting cylinder 10 is fixedly connected to the waterproof shell 8; a support block 11 is fixedly connected to the second connecting cylinder 10; the waterproof shell 8 is internally bolted with... A DD motor 9 is connected, and the DD motor 9 is waterproofed by a waterproof shell 8. A first connecting cylinder 4 is fixedly connected to the output shaft of the DD motor 9, and the first connecting cylinder 4 is connected to a second connecting cylinder 10. An auger feeder 12 is fixedly connected to the first connecting cylinder 4. The auger feeder 12 is in contact with the second connecting cylinder 10. A first telescopic pipe 13 is fixedly connected to the waterproof shell 8, and the first telescopic pipe 13 is connected to the first connecting cylinder 4. The first telescopic pipe 13 is fixedly connected to the quenching tank 2. A sludge collection box 14 is bolted to the quenching tank 2. The sludge collection box 14 is connected to the first telescopic pipe 13, and a solenoid valve is installed inside the first telescopic pipe 13.

[0025] The upper end of the second connecting cylinder 10 is provided with a rubber clamp, which fixes the gear 001 by means of the elasticity of the rubber clamp.

[0026] The surface of the second connecting cylinder 10 is equipped with a rubber sleeve for fitting the waterproof shell 8 to enhance the waterproof effect.

[0027] The first telescopic tube 13 has six annular array drainage ports, and each drainage port is equipped with a filter screen 13001 to limit oxide scale.

[0028] First, gear 001 is mounted on support block 11 using an external clamping and transfer device, and then fixed in place by rubber clips on the surface of the second connecting cylinder 10. Next, the quenching inductor 3 is controlled to transmit a high-frequency AC electromagnetic field to the induction coil 3001. Since gear 001 is located inside the induction coil 3001, electromagnetic eddy currents are generated on gear 001. Due to the resistance of gear 001, heat is generated, causing the surface temperature of gear 001 to rise rapidly, thus heating gear 001. After heating is complete, two electric sliders 6 are controlled to slide downwards on two electric slide rails 5. The two electric sliders 6 drive two connecting rods 7 to move downwards, and the connecting rods 7 drive the waterproof shell 8 to move downwards, thus waterproofing the shell. The housing 8 drives the connected components to move downwards. Specifically, the waterproof housing 8 drives the DD motor 9, the second connecting cylinder 10, and the support block 11 to move downwards, and compresses the first telescopic tube 13 through the waterproof housing 8. At the same time, it drives the gear 001 fixed on the support block 11 to move downwards into the quenching pool 2, so that the gear 001 comes into contact with the quenching liquid in the quenching pool 2 for quenching. During the continuous heat treatment of the gear 001, due to the short interval between quenching of the gear 001, the temperature of the quenching liquid around the gear 001 rises and cannot quickly exchange heat with the other quenching liquid in the quenching pool 2 for cooling. As a result, when the gear 001 is quenched later, the quenching liquid is in a high-temperature state, which affects the cooling of the gear 001, reduces the hardenability of the gear 001, and causes uneven hardening layer.

[0029] Therefore, during the quenching process of gear 001, firstly, after gear 001 moves downward into the quenching tank 2, the upper end of the second connecting cylinder 10 is located in the quenching liquid. During this process, the DD motor 9 drives the first connecting cylinder 4 to rotate, and the first connecting cylinder 4 drives the auger feeder 12 to rotate. That is, the auger feeder 12 rotates to draw in the quenching liquid in the quenching tank 2, causing the quenching liquid around gear 001 to flow into the second connecting cylinder 10. The quenching liquid in the second connecting cylinder 10 flows from top to bottom. Then, the quenching liquid in the second connecting cylinder 10 flows into the first connecting cylinder 4, and then the quenching liquid in the first connecting cylinder 4 flows into the first telescopic pipe 13, and is discharged to the bottom of the quenching tank 2 through the filter screen 13001 on the first telescopic pipe 13. This allows the quenching liquid that exchanges heat with gear 001 during the quenching process to exchange heat with the quenching liquid at the bottom of the quenching tank 2. During the quenching process, the quenching liquid drawn in by the auger feeder 12... The quenching liquid in the upper part of the quenching tank 2 is at room temperature, allowing sufficient time for heat exchange between the quenching liquid that exchanges heat with gear 001 and the quenching liquid at the bottom of the quenching tank 2. This allows the quenching liquid circulating around gear 001 to quickly lower its temperature and prevents a rapid temperature rise in the quenching area of ​​gear 001. This ensures that gear 001 remains in the room-temperature quenching liquid during quenching, facilitating normal operation and preventing a rapid temperature rise in the quenching liquid around gear 001, which would otherwise affect cooling, reduce hardenability, and cause uneven hardening. This differs from existing technologies that use pumps to circulate the quenching liquid within the quenching tank 2, which only circulates the liquid without timely cooling.

[0030] Meanwhile, as the quenching fluid circulates, it cleans the oxide scale generated on gear 001 due to heating and quenching. The oxide scale cleaned by the circulating quenching fluid is transferred to the first telescopic pipe 13, where it is blocked and settled into the sludge collection tank 14 by the filter screen 13001. This prevents the oxide scale from being discharged into the quenching pool 2, which would otherwise require frequent cleaning of the quenching fluid in the quenching pool 2. It should be noted that the solenoid valve built into the first telescopic pipe 13 is initially open, allowing the oxide scale to be discharged normally into the sludge collection tank 14. After quenching a batch of gears 001, the solenoid valve is closed, and then the sludge collection tank 14 is disassembled and cleaned by the staff.

[0031] Example 2 Based on the above embodiment 1, as follows Figure 4As shown, it also includes a cleaning assembly, which includes a connecting plate 101, a limiting cylinder 102, and bristles 103; two symmetrically arranged connecting plates 101 are fixedly connected inside the quenching pool 2; all the connecting plates 101 are connected to the limiting cylinder 102, and the limiting cylinder 102 is slidably connected to the second connecting cylinder 10; a number of annular arrays of bristles 103 are fixedly connected inside the limiting cylinder 102.

[0032] The bristles 103 are made of heat-resistant silicone material and are used to clean the oxide scale on gear 001.

[0033] During the quenching process, after the electric slider 6 and connecting rod 7 drive the gear 001 into the quenching liquid, the gear 001 enters the limiting cylinder 102. Then, the gear 001 contacts the brush bristles 103. At the same time, the DD motor 9 drives the second connecting cylinder 10 to rotate. Then, the second connecting cylinder 10 drives the support block 11 and the gear 001 to rotate. Simultaneously, it controls the two electric sliders 6 to move up and down on the electric slide rail 5. The two electric sliders 6 drive the two connecting rods 7 to move up and down accordingly. The connecting rods 7 drive the waterproof shell 8 to move up and down. Then, the waterproof shell 8 drives the components connected to it to move up and down. That is, the support block 11 and the gear 001 move up and down in the limiting cylinder 102, which drives the gear 001 to contact the brush bristles 103 and brush the oxide flakes on them, causing the stubborn oxide flakes to come off. As gear 001 disengages, its up-and-down movement continuously compresses the quenching fluid within the limiting cylinder 102, causing the fluid to be pushed upwards. This accelerates the flow of the quenching fluid within the limiting cylinder 102, thus speeding up the cooling of gear 001. Simultaneously, as the quenching fluid is pushed upwards, it washes away the oxide scale at the bottom of gear 001, causing it to move upwards. This oxide scale then enters the first telescopic pipe 13 through the cooperation of the second connecting cylinder 10 and the auger feeder 12, and subsequently flows into the sludge collection tank 14. In this way, during the quenching process of gear 001, the oxide scale on gear 001 is cleaned, and the cooling of gear 001 is accelerated.

[0034] Example 3 is based on Example 2 above, such as... Figure 5-6 As shown, it also includes a filter assembly, which includes a second telescopic tube 201, a squeezing plate 202, a spring limiting rod 203, and a sealing plate 204; the second telescopic tube 201 is fixedly connected to the limiting cylinder 102; the second telescopic tube 201 communicates with the first telescopic tube 13; the second telescopic tube 201 is fixedly connected to the connecting rod 7; all the connecting rods 7 are fixedly connected to two symmetrically arranged squeezing plates 202; twelve annular array spring limiting rods 203 are passed through the limiting cylinder 102; the sealing plate 204 is fixedly connected to the telescopic rods on all the spring limiting rods 203.

[0035] The limiting cylinder 102 is provided with six annular array through holes 102001, which are used to cooperate with the sealing plate 204 to clean the oxide scale.

[0036] The sealing plate 204 has an arc-shaped structure for guiding oxide scale.

[0037] The lower part of the sealing plate 204 is provided with a rubber structure that fits the through hole 102001 to enhance the sealing effect of the through hole 102001 and prevent residual oxide scale on the through hole 102001 from affecting the sealing effect.

[0038] During the quenching process, initially, the spring limiting rod 203 is in a compressed state, and initially the spring limiting rod 203 drives the sealing plate 204 to be located in the upper middle part of the limiting cylinder 102. After the electric slider 6 and the connecting rod 7 drive the gear 001 into the quenching liquid, the connecting rod 7 synchronously drives the extrusion plate 202 to move downward, so that the spring limiting rod 203 extends and drives the sealing plate 204 to move downward to block the through hole 102001, so that the limiting cylinder 102 forms a semi-closed cylinder to ensure the cleaning operation of the stubborn oxide scale on the gear 001 in Example 2. It should be noted that after the gear 001 enters the quenching liquid, the connecting rod 7 and the extrusion plate 202 are in a state away from the spring limiting rod 203. When the gear 001 moves up and down, the connecting rod 7 and the extrusion plate 202 still remain away from the spring limiting rod 203.

[0039] After the quenching process is completed, the electric slider 6 is controlled to move upward on the electric slide rail 5. Then, the electric slider 6 drives the connecting rod 7 to move upward. The connecting rod 7 drives the extrusion plate 202 to move upward and push the limit rod on the spring limit rod 203, and squeeze the spring on the spring limit rod 203. Then, the limit rod on the spring limit rod 203 pushes the sealing plate 204 to move upward, so that the through hole 102001 loses its limit. The residual oxide scale on the brush bristles 103 is scraped by the sealing plate 204. Then, the oxide scale enters the second telescopic tube 201 through the through hole 102001, and then enters the first telescopic tube 13 through the second telescopic tube 201. Finally, it enters the sludge collection box 14 to collect the cleaned oxide scale. After a long period of operation, the solenoid valve built into the first telescopic tube 13 is controlled to close, and then the sludge collection box 14 is removed from the quenching tank 2 to clean the oxide scale.

[0040] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural or procedural transformations made based on the content of the present invention specification, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present invention.

Claims

1. An auxiliary heat treatment device for internal gears in automotive transmissions, comprising a mounting frame (1), a quenching tank (2), and a quenching inductor (3); the quenching tank (2) is fixedly connected to the mounting frame (1); the quenching inductor (3) is fixedly connected to the quenching tank (2); and an induction coil (3001) is fixedly connected to the quenching inductor (3); characterized in that, It also includes a first connecting cylinder (4), an electric slide rail (5), an electric slider (6), a connecting rod (7), a waterproof shell (8), a DD motor (9), a second connecting cylinder (10), a support block (11), an auger feeder (12), a first telescopic pipe (13), and a sludge collection tank (14); several electric slide rails (5) are fixedly connected inside the mounting frame (1); an electric slider (6) is slidably connected to each electric slide rail (5); a connecting rod (7) is fixedly connected to each electric slider (6); all the connecting rods (7) are fixedly connected to the waterproof shell (8); a second connecting cylinder (10) is fixedly connected to the waterproof shell (8); a support block (11) is fixedly connected to the second connecting cylinder (10); a fixed connection is made inside the waterproof shell (8). A DD motor (9) is connected to the waterproof housing (8) for waterproof protection. A first connecting cylinder (4) is fixedly connected to the output shaft of the DD motor (9), and the first connecting cylinder (4) is connected to the second connecting cylinder (10). An auger feeder (12) is fixedly connected to the first connecting cylinder (4). The auger feeder (12) is in contact with the second connecting cylinder (10). A first telescopic pipe (13) is fixedly connected to the waterproof housing (8), and the first telescopic pipe (13) is connected to the first connecting cylinder (4). The first telescopic pipe (13) is fixedly connected to the quenching tank (2). A sludge collection box (14) is fixedly connected to the quenching tank (2). The sludge collection box (14) is connected to the first telescopic pipe (13), and a solenoid valve is installed inside the first telescopic pipe (13).

2. The auxiliary equipment for heat treatment of internal gears in an automotive transmission according to claim 1, characterized in that, The upper end of the second connecting cylinder (10) is provided with a rubber block, and the gear (001) is fixed by the telescopic property of the rubber block.

3. The auxiliary equipment for heat treatment of internal gears in an automotive transmission according to claim 1, characterized in that, The surface of the second connecting cylinder (10) is equipped with a rubber sleeve.

4. An auxiliary device for heat treatment of internal gears for automotive transmissions according to any one of claims 1-3, characterized in that, The first telescopic pipe (13) has several drain outlets, and each drain outlet is equipped with a filter screen (13001).

5. The auxiliary equipment for heat treatment of internal gears in an automotive transmission according to claim 4, characterized in that, It also includes a cleaning component, which includes a connecting plate (101), a limiting cylinder (102), and bristles (103); several connecting plates (101) are fixedly connected inside the quenching pool (2); all the connecting plates (101) are connected to the limiting cylinder (102), and the limiting cylinder (102) is slidably connected to the second connecting cylinder (10); several annular arrays of bristles (103) are fixedly connected inside the limiting cylinder (102).

6. The auxiliary equipment for heat treatment of internal gears in an automotive transmission according to claim 5, characterized in that, The bristles (103) are made of heat-resistant silicone material.

7. An auxiliary device for heat treatment of internal gears for automotive transmissions according to claim 6, characterized in that, It also includes a filter assembly, which includes a second telescopic tube (201), a squeezing plate (202), a spring limiting rod (203), and a sealing plate (204); the second telescopic tube (201) is fixedly connected to the limiting cylinder (102); the second telescopic tube (201) is connected to the first telescopic tube (13); the second telescopic tube (201) is fixedly connected to the connecting rod (7); all the connecting rods (7) are fixedly connected to several squeezing plates (202); several spring limiting rods (203) are threaded through the limiting cylinder (102); the sealing plate (204) is fixedly connected to the telescopic rods on all the spring limiting rods (203).

8. An auxiliary device for heat treatment of internal gears for automotive transmissions according to claim 7, characterized in that, Several limit cylinders (102) are provided.

9. An auxiliary device for heat treatment of internal gears for automotive transmissions according to claim 7, characterized in that, An arc-shaped structure is provided on the sealing plate (204).

10. An auxiliary device for heat treatment of internal gears for automotive transmissions according to claim 7, characterized in that, The lower part of the sealing plate (204) is provided with a rubber structure that fits the through hole (102001).

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