Sprocket shaft induction hardening device
By introducing protective covers, air extraction pipes, water inlet pipes, and water outlet pipes into the sprocket shaft induction hardening device, the problem of heat affecting other components of the equipment was solved, thus achieving equipment protection and improving hardening accuracy.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHANGZHOU WUJIN LIANGFA MASCH TRANSMISSION CO LTD
- Filing Date
- 2025-06-27
- Publication Date
- 2026-05-26
AI Technical Summary
The existing induction hardening equipment for sprocket shafts lacks protective devices during heat treatment, which causes heat to affect other components of the equipment and reduce their service life.
A sprocket shaft induction hardening device was designed, comprising a protective cover, an exhaust pipe, a water inlet pipe, and a water outlet pipe. The exhaust pipe discharges hot airflow, the water inlet pipe absorbs heat, the airflow channel inside the protective cover cools the air, and the heat dissipation fins further reduce heat, ensuring that the equipment components are not damaged. The coolant is recycled through the filter assembly of the cooling pool.
It effectively prevents heat from damaging the overall components of the equipment, reduces the risk of burns, ensures quenching accuracy and processing quality, and improves the surface hardness uniformity of the sprocket shaft.
Smart Images
Figure CN224280373U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of sprocket heat treatment devices, specifically a sprocket shaft induction hardening device. Background Technology
[0002] A sprocket shaft is a mechanical component used to mount sprockets and transmit torque. It is usually made of carbon steel or alloy steel and needs to have sufficient strength and wear resistance to withstand the load during transmission. Its structure generally includes a shaft body, a shoulder, and a keyway. It is fixed to the sprocket by key connection or interference fit to achieve meshing transmission with the chain. It is widely used in mechanical systems such as motorcycles, bicycles, and industrial conveying equipment, and is one of the core components of chain drive devices.
[0003] The sprocket shaft induction hardening device is a special equipment used for induction heating and hardening of the sprocket shaft surface. It uses the principle of electromagnetic induction to generate eddy current heating on the surface of the shaft, and achieves rapid hardening treatment in combination with the quenching medium. It is suitable for surface strengthening treatment of sprocket shafts in mass production, and can effectively enhance the fatigue resistance and service life of the shaft. It is widely used in the field of mechanical manufacturing.
[0004] When the sprocket shaft is heated, the lack of a protective device means that the induction heating equipment will generate a large amount of heat, which will affect other components of the equipment and reduce their service life.
[0005] Therefore, an induction hardening device for sprocket shafts is proposed to address the above problems. Utility Model Content
[0006] In order to overcome the shortcomings of the prior art, at least one technical problem raised in the background art is solved.
[0007] The technical solution adopted by this utility model to solve its technical problem is as follows: The sprocket shaft induction hardening device of this utility model includes a cooling pool, a first fixed column fixedly connected to the side wall of the cooling pool; a first cylinder fixedly connected to the end of the first fixed column; a square plate fixedly connected to the output end of the first cylinder; a placement column fixedly connected to the surface of the square plate; a fixing plate fixedly connected to the side wall of the first fixed column; a connecting column fixedly connected to the surface of the fixing plate; an induction heating coil fixedly connected to the end of the connecting column; a second fixed column fixedly connected to the side wall of the cooling pool; a second cylinder fixedly connected to the end of the second fixed column; and so on. A protective cover is fixed to the output end of the second cylinder; an air extraction pipe is connected through the end of the protective cover; a water inlet pipe is fixed to the surface of the air extraction pipe; a water outlet pipe is fixed to the surface of the air extraction pipe; a water flow channel is opened inside the air extraction pipe; the water inlet pipe, the water outlet pipe, and the water flow channel are connected in a continuous manner; thus, the protective cover protects the heat generated by the induction heating coil, and the hot air is discharged through the air extraction pipe, so as not to affect the components of the equipment as a whole and reduce its service life. The water inlet pipe and the water outlet pipe absorb the heat in the hot air flow with water, reducing the baking of the air extraction pipe by the hot air flow.
[0008] Preferably, an air inlet pipe is fixedly connected to the surface of the protective cover; an air outlet pipe is fixedly connected to the surface of the protective cover; an air flow channel is provided inside the protective cover; the air flow channel is connected to the air inlet pipe and the air outlet pipe; thereby, the temperature of the protective cover is reduced by the air inlet pipe, reducing the risk of burns, and the impact of thermal deformation of the sprocket shaft on the quenching accuracy is reduced by temperature control, ensuring the uniformity of surface hardness of the sprocket shaft and improving the processing quality.
[0009] Preferably, heat dissipation fins are fixedly attached to the surface of the exhaust pipe; multiple heat dissipation fins are provided; thereby, the heat dissipation fins further reduce the heat in the hot airflow.
[0010] Preferably, the side wall of the cooling pool is connected to a water outlet; a filter assembly is installed on the surface of the water outlet; thereby, the coolant in the cooling pool can be circulated and reused.
[0011] Preferably, the filter assembly includes a flange; a filter element is fixedly connected inside the flange; thereby, the flange can be disassembled to clean impurities in the outlet, thus simplifying the operation of cleaning impurities in the outlet.
[0012] Preferably, a sponge is fixed to the inner wall of the second fixed column; the sponge slides in conjunction with the output end of the second cylinder; thereby, the output end of the second cylinder can be cleaned, thus reducing the impact of mist on the output end of the second cylinder.
[0013] The advantages of this utility model are:
[0014] 1. The sprocket shaft induction hardening device of this utility model protects the heat generated by the induction heating coil from the protective cover and discharges the hot air through the exhaust pipe, so as not to affect the components of the whole equipment and reduce its service life. The water inlet pipe and water outlet pipe are set to absorb the heat in the hot air with water, reducing the baking of the exhaust pipe by the hot air.
[0015] 2. The sprocket shaft induction hardening device of this utility model reduces the temperature of the protective cover by the air inlet pipe, thereby reducing the risk of burns. It also reduces the impact of thermal deformation of the sprocket shaft on the hardening accuracy by temperature control, ensuring the uniformity of surface hardness of the sprocket shaft and improving the processing quality. Attached Figure Description
[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0017] Figure 1 This is a schematic diagram of the main body of this utility model;
[0018] Figure 2 This is a schematic diagram of the structure for placing the column in this utility model;
[0019] Figure 3 This is a schematic diagram of the structure of the induction heating coil in this utility model;
[0020] Figure 4 This is a schematic diagram of the heat dissipation fins in this utility model;
[0021] Figure 5 This is a schematic diagram of the structure of the filter element in this utility model.
[0022] In the diagram: 1. Cooling pool; 101. First fixed column; 102. First cylinder; 103. Square plate; 104. Placement column; 105. Fixing plate; 106. Induction heating coil; 107. Connecting column; 108. Second fixed column; 109. Second cylinder; 110. Protective cover; 111. Air extraction pipe; 112. Water inlet pipe; 113. Water outlet pipe; 114. Water flow channel; 2. Air inlet pipe; 201. Air flow channel; 202. Air outlet pipe; 3. Heat dissipation fins; 4. Water outlet; 401. Filter assembly; 5. Flange; 501. Filter sheet; 6. Sponge. Detailed Implementation
[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.
[0024] Specific implementation examples are given below.
[0025] like Figures 1 to 5As shown in the embodiment of this utility model, the sprocket shaft induction hardening device includes a cooling pool 1. A first fixing column 101 is fixedly connected to the side wall of the cooling pool 1. A first cylinder 102 is fixedly connected to the end of the first fixing column 101. A square plate 103 is fixedly connected to the output end of the first cylinder 102. A placement column 104 is fixedly connected to the surface of the square plate 103. A fixing plate 105 is fixedly connected to the side wall of the first fixing column 101. A connecting column 107 is fixedly connected to the surface of the fixing plate 105. An induction heating coil 106 is fixedly connected to the end of the connecting column 107. A second fixing column 108 is fixedly connected to the side wall of the cooling pool 1. A second cylinder 109 is fixedly connected to the end of cylinder 108; a protective cover 110 is fixedly connected to the output end of the second cylinder 109; an air extraction pipe 111 is connected through the end of the protective cover 110; a water inlet pipe 112 is fixedly connected to the surface of the air extraction pipe 111; a water outlet pipe 113 is fixedly connected to the surface of the air extraction pipe 111; a water flow channel 114 is opened inside the air extraction pipe 111; the water inlet pipe 112, the water outlet pipe 113, and the water flow channel 114 are connected in a continuous manner; during operation, the air extraction pipe 111 is connected to an air pump, the water inlet pipe 112 is connected to a water pipe, the water outlet pipe 113 is connected to a water tank, the sprocket shaft is placed on the placement column 104, and the operation is started. The first cylinder 102 drives the placement column 104 upward into the induction heating coil 106. The second cylinder 109 is activated, driving the protective cover 110 downward to the surface of the fixing plate 105, so that the protective cover 110 covers the induction heating coil 106. Before the induction heating coil 106 heats the sprocket shaft through electromagnetic induction, the vacuum pump is activated to weaken the heat generated by the induction heating coil 106 through the airflow of the vacuum pump. When the vacuum pump draws the hot airflow into the vacuum pipe 111, water flows into the water channel 114 through the water inlet pipe 112. The water flows in the water channel 114 in the vacuum pipe 111, which in turn draws water into the vacuum pipe 111. The heat is absorbed and discharged through the water outlet pipe 113 to prevent the hot airflow from damaging the exhaust pipe 111. After the sprocket shaft is heated, the first cylinder 102 is activated to move the placement column 104 downward so that the sprocket shaft is immersed in the coolant, thus completing the heating and quenching treatment of the sprocket shaft. The protective cover 110 protects the heat generated by the induction heating coil 106 and discharges the hot airflow through the exhaust pipe 111, so as not to affect the components of the equipment as a whole and reduce its service life. The water inlet pipe 112 and the water outlet pipe 113 absorb the heat in the hot airflow with water, reducing the baking of the exhaust pipe 111 by the hot airflow.
[0026] like Figures 1 to 4As shown, an air inlet pipe 2 is fixedly connected to the surface of the protective cover 110; an air outlet pipe 202 is fixedly connected to the surface of the protective cover 110; an air flow channel 201 is provided inside the protective cover 110; the air flow channel 201 is connected to the air inlet pipe 2 and the air outlet pipe 202; during operation, the air inlet pipe 2 is connected to an air pump, and the air pump is started. When the protective cover 110 is lowered to protect against the heat generated by the induction heating coil 106, the air pump blows airflow from the air inlet pipe 2 into the air flow channel 201 and blows it out from the air outlet pipe 202. The airflow in the air flow channel 201 reduces the temperature at which the heat generated by the induction heating coil 106 bakes the surface of the protective cover 110, thereby lowering the surface temperature of the protective cover 110; thus, the temperature of the protective cover 110 is reduced by the air inlet pipe 2, reducing the risk of burns, and the impact of thermal deformation of the sprocket shaft on the quenching accuracy is reduced by temperature control, ensuring the uniformity of surface hardness of the sprocket shaft and improving the processing quality.
[0027] like Figures 1 to 4 As shown, heat dissipation fins 3 are fixedly attached to the surface of the exhaust pipe 111; multiple heat dissipation fins 3 are provided; during operation, when the exhaust pump of the exhaust pipe 111 draws hot air into the exhaust pipe 111, the multiple heat dissipation fins 3 on the surface of the exhaust pipe 111 will dissipate the heat in the hot air, and cooperate with the water inlet pipe 112 to further reduce the heat in the hot air; thus, the heat dissipation fins 3 further reduce the heat in the hot air.
[0028] like Figures 1 to 5 As shown, the side wall of the cooling pool 1 is connected to a water outlet 4; a filter assembly 401 is installed on the surface of the water outlet 4; during operation, when there are too many impurities in the cooling pool 1 due to cooling by the sprocket shaft, the water outlet 4 can be opened by the valve, and the water outlet 4 can be connected to the collection device. At this time, the coolant in the cooling pool 1 is filtered out of impurities by the flange 5 and then transported to the collection device; thus, the coolant in the cooling pool 1 can be recycled.
[0029] like Figure 5 As shown, the filter assembly 401 includes a flange 5; a filter disc 501 is fixedly connected inside the flange 5; during operation, when there are too many impurities in the outlet 4, the flange 5 can be turned to separate the flange 5 from the outlet 4, so that the impurities can be cleaned; thereby disassembling the flange 5 to clean the impurities in the outlet 4 can simplify the operation of cleaning the impurities in the outlet 4.
[0030] like Figures 1 to 4As shown, a sponge 6 is fixed to the inner wall of the second fixed column 108; the sponge 6 is slidably engaged with the output end of the second cylinder 109; during operation, when the second cylinder 109 controls the protective cover 110 to move up and down, a large amount of mist is generated when the sprocket shaft is cooled by the coolant, which affects the output end of the second cylinder 109. At this time, the sponge 6 cleans the output end of the second cylinder 109; thus, the output end of the second cylinder 109 can be cleaned, thereby reducing the impact of mist on the output end of the second cylinder 109.
[0031] Working principle: By connecting the air extraction pipe 111 to the air pump, the water inlet pipe 112 to the water pipe, and the water outlet pipe 113 to the water tank, the sprocket shaft is placed on the placement column 104. The first cylinder 102 is activated, moving the placement column 104 upwards into the induction heating coil 106. The second cylinder 109 is activated, moving the protective cover 110 downwards to the surface of the fixing plate 105, so that the protective cover 110 covers the induction heating coil 106. Before the induction heating coil 106 heats the sprocket shaft through electromagnetic induction, the air extraction pump is activated. The heat generated by the induction heating coil 106 is weakened by the airflow of the air extraction pump. When the pump draws hot air into the suction pipe 111, water flows into the water channel 114 through the inlet pipe 112. The water flows through the water channel 114 in the suction pipe 111, absorbing the heat from the suction pipe 111 and discharging it through the outlet pipe 113, preventing damage to the suction pipe 111 from the hot air. After the sprocket shaft is heated, the first cylinder 102 is activated to move the placement column 104 downwards, immersing the sprocket shaft in the coolant, completing the heating and quenching process. The inlet pipe 2 is connected to the air pump, and the air pump is started. The heat generated by the induction heating coil 106 is absorbed by the lowering of the protective cover 110. During protection, the air pump blows airflow into the airflow channel 201 from the air inlet pipe 2 and out from the air outlet pipe 202. The airflow in the airflow channel 201 reduces the temperature of the protective cover 110 surface heated by the heat generated by the induction heating coil 106, thereby lowering the surface temperature of the protective cover 110. When the air pump in the extraction pipe 111 draws hot airflow into the extraction pipe 111, multiple heat dissipation fins 3 on the surface of the extraction pipe 111 dissipate the heat in the hot airflow, further reducing the heat in the hot airflow in conjunction with the water inlet pipe 112. Impurities in the cooling pool 1 are cooled by the sprocket shaft. If there is too much fluid, the outlet 4 can be opened by the valve, and the outlet 4 can be connected to the collection device. At this time, the coolant in the cooling pool 1 is filtered out by the flange 5 and then transported to the collection device. If there is too much fluid in the outlet 4, the flange 5 can be turned to separate the flange 5 from the outlet 4, so that the fluid can be cleaned. When the second cylinder 109 controls the protective cover 110 to move up and down, a large amount of mist will be generated when the sprocket shaft is cooled by the coolant, which will affect the output end of the second cylinder 109. At this time, the sponge 6 will clean the output end of the second cylinder 109.
[0032] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.
Claims
1. A sprocket shaft induction hardening device, comprising a cooling tank (1), characterized in that: A first fixing column (101) is fixedly connected to the side wall of the cooling pool (1); a first cylinder (102) is fixedly connected to the end of the first fixing column (101); a square plate (103) is fixedly connected to the output end of the first cylinder (102); a placement column (104) is fixedly connected to the surface of the square plate (103); a fixing plate (105) is fixedly connected to the side wall of the first fixing column (101); a connecting column (107) is fixedly connected to the surface of the fixing plate (105); an induction heating coil (106) is fixedly connected to the end of the connecting column (107); a second fixing column is fixedly connected to the side wall of the cooling pool (1). (108); A second cylinder (109) is fixedly connected to the end of the second fixed column (108); A protective cover (110) is fixedly connected to the output end of the second cylinder (109); An air extraction pipe (111) is connected through the end of the protective cover (110); A water inlet pipe (112) is fixedly connected to the surface of the air extraction pipe (111); A water outlet pipe (113) is fixedly connected to the surface of the air extraction pipe (111); A water flow channel (114) is opened inside the air extraction pipe (111); The water inlet pipe (112), the water outlet pipe (113), and the water flow channel (114) are connected through each other.
2. The sprocket shaft induction hardening device according to claim 1, characterized in that: An air inlet pipe (2) is fixedly connected to the surface of the protective cover (110); an air outlet pipe (202) is fixedly connected to the surface of the protective cover (110); an air flow channel (201) is provided inside the protective cover (110); the air flow channel (201) is connected to the air inlet pipe (2) and the air outlet pipe (202).
3. The sprocket shaft induction hardening device according to claim 2, characterized in that: The surface of the exhaust pipe (111) is fixed with heat dissipation fins (3); there are multiple heat dissipation fins (3).
4. The sprocket shaft induction hardening device according to claim 3, characterized in that: The cooling pool (1) has a through-hole (4) on its side wall; a filter assembly (401) is installed on the surface of the outlet (4).
5. The sprocket shaft induction hardening device according to claim 4, characterized in that: The filter assembly (401) includes a flange (5); a filter element (501) is fixedly connected inside the flange (5).
6. The sprocket shaft induction hardening device according to claim 5, characterized in that: The inner wall of the second fixed column (108) is fixed with a sponge (6); the sponge (6) is slidably engaged with the output end of the second cylinder (109).